A branch of the abdominal aorta which supplies the kidneys, adrenal glands and ureters.
Narrowing or occlusion of the RENAL ARTERY or arteries. It is due usually to ATHEROSCLEROSIS; FIBROMUSCULAR DYSPLASIA; THROMBOSIS; EMBOLISM, or external pressure. The reduced renal perfusion can lead to renovascular hypertension (HYPERTENSION, RENOVASCULAR).
The vessels carrying blood away from the heart.
Hypertension due to RENAL ARTERY OBSTRUCTION or compression.
The short wide vessel arising from the conus arteriosus of the right ventricle and conveying unaerated blood to the lungs.
Either of the two principal arteries on both sides of the neck that supply blood to the head and neck; each divides into two branches, the internal carotid artery and the external carotid artery.
The main artery of the thigh, a continuation of the external iliac artery.
Arteries which arise from the abdominal aorta and distribute to most of the intestines.
Radiography of blood vessels after injection of a contrast medium.
Either of two large arteries originating from the abdominal aorta; they supply blood to the pelvis, abdominal wall and legs.
The arterial blood vessels supplying the CEREBRUM.
Short thick veins which return blood from the kidneys to the vena cava.
The artery formed by the union of the right and left vertebral arteries; it runs from the lower to the upper border of the pons, where it bifurcates into the two posterior cerebral arteries.
Use of a balloon catheter for dilation of an occluded artery. It is used in treatment of arterial occlusive diseases, including renal artery stenosis and arterial occlusions in the leg. For the specific technique of BALLOON DILATION in coronary arteries, ANGIOPLASTY, BALLOON, CORONARY is available.
Body organ that filters blood for the secretion of URINE and that regulates ion concentrations.
Devices that provide support for tubular structures that are being anastomosed or for body cavities during skin grafting.
Pathological outpouching or sac-like dilatation in the wall of any blood vessel (ARTERIES or VEINS) or the heart (HEART ANEURYSM). It indicates a thin and weakened area in the wall which may later rupture. Aneurysms are classified by location, etiology, or other characteristics.
Persistent high BLOOD PRESSURE due to KIDNEY DISEASES, such as those involving the renal parenchyma, the renal vasculature, or tumors that secrete RENIN.
The aorta from the DIAPHRAGM to the bifurcation into the right and left common iliac arteries.
The arterial trunk that arises from the abdominal aorta and after a short course divides into the left gastric, common hepatic and splenic arteries.
The circulation of the BLOOD through the vessels of the KIDNEY.
The first branch of the SUBCLAVIAN ARTERY with distribution to muscles of the NECK; VERTEBRAE; SPINAL CORD; CEREBELLUM; and interior of the CEREBRUM.
Surgical therapy of ischemic coronary artery disease achieved by grafting a section of saphenous vein, internal mammary artery, or other substitute between the aorta and the obstructed coronary artery distal to the obstructive lesion.
A large vessel supplying the whole length of the small intestine except the superior part of the duodenum. It also supplies the cecum and the ascending part of the colon and about half the transverse part of the colon. It arises from the anterior surface of the aorta below the celiac artery at the level of the first lumbar vertebra.
The direct continuation of the brachial trunk, originating at the bifurcation of the brachial artery opposite the neck of the radius. Its branches may be divided into three groups corresponding to the three regions in which the vessel is situated, the forearm, wrist, and hand.
Arteries originating from the subclavian or axillary arteries and distributing to the anterior thoracic wall, mediastinal structures, diaphragm, pectoral muscles and mammary gland.
The largest branch of the celiac trunk with distribution to the spleen, pancreas, stomach and greater omentum.
Reconstruction or repair of a blood vessel, which includes the widening of a pathological narrowing of an artery or vein by the removal of atheromatous plaque material and/or the endothelial lining as well, or by dilatation (BALLOON ANGIOPLASTY) to compress an ATHEROMA. Except for ENDARTERECTOMY, usually these procedures are performed via catheterization as minimally invasive ENDOVASCULAR PROCEDURES.
Branch of the common carotid artery which supplies the anterior part of the brain, the eye and its appendages, the forehead and nose.
Artery arising from the brachiocephalic trunk on the right side and from the arch of the aorta on the left side. It distributes to the neck, thoracic wall, spinal cord, brain, meninges, and upper limb.
A branch of the celiac artery that distributes to the stomach, pancreas, duodenum, liver, gallbladder, and greater omentum.
PRESSURE of the BLOOD on the ARTERIES and other BLOOD VESSELS.
Evaluation undertaken to assess the results or consequences of management and procedures used in combating disease in order to determine the efficacy, effectiveness, safety, and practicability of these interventions in individual cases or series.
Pathological conditions involving the CAROTID ARTERIES, including the common, internal, and external carotid arteries. ATHEROSCLEROSIS and TRAUMA are relatively frequent causes of carotid artery pathology.
Non-invasive method of vascular imaging and determination of internal anatomy without injection of contrast media or radiation exposure. The technique is used especially in CEREBRAL ANGIOGRAPHY as well as for studies of other vascular structures.
The continuation of the axillary artery; it branches into the radial and ulnar arteries.
Tomography using x-ray transmission and a computer algorithm to reconstruct the image.
Excision of kidney.
Graphic tracing over a time period of radioactivity measured externally over the kidneys following intravenous injection of a radionuclide which is taken up and excreted by the kidneys.
Radiographic visualization of the aorta and its branches by injection of contrast media, using percutaneous puncture or catheterization procedures.
A method of delineating blood vessels by subtracting a tissue background image from an image of tissue plus intravascular contrast material that attenuates the X-ray photons. The background image is determined from a digitized image taken a few moments before injection of the contrast material. The resulting angiogram is a high-contrast image of the vessel. This subtraction technique allows extraction of a high-intensity signal from the superimposed background information. The image is thus the result of the differential absorption of X-rays by different tissues.
The veins and arteries of the HEART.
Surgical insertion of BLOOD VESSEL PROSTHESES to repair injured or diseased blood vessels.
The two principal arteries supplying the structures of the head and neck. They ascend in the neck, one on each side, and at the level of the upper border of the thyroid cartilage, each divides into two branches, the external (CAROTID ARTERY, EXTERNAL) and internal (CAROTID ARTERY, INTERNAL) carotid arteries.
An abnormal balloon- or sac-like dilatation in the wall of the ABDOMINAL AORTA which gives rise to the visceral, the parietal, and the terminal (iliac) branches below the aortic hiatus at the diaphragm.
The physiological narrowing of BLOOD VESSELS by contraction of the VASCULAR SMOOTH MUSCLE.
An iodine-containing compound used in pyelography as a radiopaque medium. If labeled with radioiodine, it can be used for studies of renal function.
Ultrasonography applying the Doppler effect combined with real-time imaging. The real-time image is created by rapid movement of the ultrasound beam. A powerful advantage of this technique is the ability to estimate the velocity of flow from the Doppler shift frequency.
Operative procedures for the treatment of vascular disorders.
The physiological widening of BLOOD VESSELS by relaxing the underlying VASCULAR SMOOTH MUSCLE.
Thickening and loss of elasticity of the walls of ARTERIES of all sizes. There are many forms classified by the types of lesions and arteries involved, such as ATHEROSCLEROSIS with fatty lesions in the ARTERIAL INTIMA of medium and large muscular arteries.
Pathological processes which result in the partial or complete obstruction of ARTERIES. They are characterized by greatly reduced or absence of blood flow through these vessels. They are also known as arterial insufficiency.
Artery originating from the internal carotid artery and distributing to the eye, orbit and adjacent facial structures.
Elements of limited time intervals, contributing to particular results or situations.
The domestic dog, Canis familiaris, comprising about 400 breeds, of the carnivore family CANIDAE. They are worldwide in distribution and live in association with people. (Walker's Mammals of the World, 5th ed, p1065)
The degree to which BLOOD VESSELS are not blocked or obstructed.
The nonstriated involuntary muscle tissue of blood vessels.
Device constructed of either synthetic or biological material that is used for the repair of injured or diseased blood vessels.
Studies used to test etiologic hypotheses in which inferences about an exposure to putative causal factors are derived from data relating to characteristics of persons under study or to events or experiences in their past. The essential feature is that some of the persons under study have the disease or outcome of interest and their characteristics are compared with those of unaffected persons.
Specialized arterial vessels in the umbilical cord. They carry waste and deoxygenated blood from the FETUS to the mother via the PLACENTA. In humans, there are usually two umbilical arteries but sometimes one.
The largest of the cerebral arteries. It trifurcates into temporal, frontal, and parietal branches supplying blood to most of the parenchyma of these lobes in the CEREBRAL CORTEX. These are the areas involved in motor, sensory, and speech activities.
A highly specific (Leu-Leu) endopeptidase that generates ANGIOTENSIN I from its precursor ANGIOTENSINOGEN, leading to a cascade of reactions which elevate BLOOD PRESSURE and increase sodium retention by the kidney in the RENIN-ANGIOTENSIN SYSTEM. The enzyme was formerly listed as EC 3.4.99.19.
A potent and specific inhibitor of PEPTIDYL-DIPEPTIDASE A. It blocks the conversion of ANGIOTENSIN I to ANGIOTENSIN II, a vasoconstrictor and important regulator of arterial blood pressure. Captopril acts to suppress the RENIN-ANGIOTENSIN SYSTEM and inhibits pressure responses to exogenous angiotensin.
Arteries originating from the subclavian or axillary arteries and distributing to the anterior thoracic wall, mediastinal structures, diaphragm, pectoral muscles, mammary gland and the axillary aspect of the chest wall.
A technetium imaging agent used in renal scintigraphy, computed tomography, lung ventilation imaging, gastrointestinal scintigraphy, and many other procedures which employ radionuclide imaging agents.
Single pavement layer of cells which line the luminal surface of the entire vascular system and regulate the transport of macromolecules and blood components.
Arteries arising from the external carotid or the maxillary artery and distributing to the temporal region.
Ultrasonography applying the Doppler effect, with frequency-shifted ultrasound reflections produced by moving targets (usually red blood cells) in the bloodstream along the ultrasound axis in direct proportion to the velocity of movement of the targets, to determine both direction and velocity of blood flow. (Stedman, 25th ed)
Left bronchial arteries arise from the thoracic aorta, the right from the first aortic intercostal or the upper left bronchial artery; they supply the bronchi and the lower trachea.
Studies in which individuals or populations are followed to assess the outcome of exposures, procedures, or effects of a characteristic, e.g., occurrence of disease.
Persistently high systemic arterial BLOOD PRESSURE. Based on multiple readings (BLOOD PRESSURE DETERMINATION), hypertension is currently defined as when SYSTOLIC PRESSURE is consistently greater than 140 mm Hg or when DIASTOLIC PRESSURE is consistently 90 mm Hg or more.
Drugs used to cause constriction of the blood vessels.
The continuation of the femoral artery coursing through the popliteal fossa; it divides into the anterior and posterior tibial arteries.
The larger of the two terminal branches of the brachial artery, beginning about one centimeter distal to the bend of the elbow. Like the RADIAL ARTERY, its branches may be divided into three groups corresponding to their locations in the forearm, wrist, and hand.
The volume of water filtered out of plasma through glomerular capillary walls into Bowman's capsules per unit of time. It is considered to be equivalent to INULIN clearance.
Radiography of the vascular system of the heart muscle after injection of a contrast medium.
The flow of BLOOD through or around an organ or region of the body.
A method of hemostasis utilizing various agents such as Gelfoam, silastic, metal, glass, or plastic pellets, autologous clot, fat, and muscle as emboli. It has been used in the treatment of spinal cord and INTRACRANIAL ARTERIOVENOUS MALFORMATIONS, renal arteriovenous fistulas, gastrointestinal bleeding, epistaxis, hypersplenism, certain highly vascular tumors, traumatic rupture of blood vessels, and control of operative hemorrhage.
Drugs used to cause dilation of the blood vessels.
Ultrasonography applying the Doppler effect, with the superposition of flow information as colors on a gray scale in a real-time image. This type of ultrasonography is well-suited to identifying the location of high-velocity flow (such as in a stenosis) or of mapping the extent of flow in a certain region.
A thickening and loss of elasticity of the walls of ARTERIES that occurs with formation of ATHEROSCLEROTIC PLAQUES within the ARTERIAL INTIMA.
A branch arising from the internal iliac artery in females, that supplies blood to the uterus.
The movement and the forces involved in the movement of the blood through the CARDIOVASCULAR SYSTEM.
Pathologic processes that affect patients after a surgical procedure. They may or may not be related to the disease for which the surgery was done, and they may or may not be direct results of the surgery.
A chronic inflammatory process that affects the AORTA and its primary branches, such as the brachiocephalic artery (BRACHIOCEPHALIC TRUNK) and CAROTID ARTERIES. It results in progressive arterial stenosis, occlusion, and aneurysm formation. The pulse in the arm is hard to detect. Patients with aortitis syndrome often exhibit retinopathy.
Branch of the common carotid artery which supplies the exterior of the head, the face, and the greater part of the neck.
Observation of a population for a sufficient number of persons over a sufficient number of years to generate incidence or mortality rates subsequent to the selection of the study group.
The act of constricting.
Damages to the CAROTID ARTERIES caused either by blunt force or penetrating trauma, such as CRANIOCEREBRAL TRAUMA; THORACIC INJURIES; and NECK INJURIES. Damaged carotid arteries can lead to CAROTID ARTERY THROMBOSIS; CAROTID-CAVERNOUS SINUS FISTULA; pseudoaneurysm formation; and INTERNAL CAROTID ARTERY DISSECTION. (From Am J Forensic Med Pathol 1997, 18:251; J Trauma 1994, 37:473)
A hypoperfusion of the BLOOD through an organ or tissue caused by a PATHOLOGIC CONSTRICTION or obstruction of its BLOOD VESSELS, or an absence of BLOOD CIRCULATION.
Any of various animals that constitute the family Suidae and comprise stout-bodied, short-legged omnivorous mammals with thick skin, usually covered with coarse bristles, a rather long mobile snout, and small tail. Included are the genera Babyrousa, Phacochoerus (wart hogs), and Sus, the latter containing the domestic pig (see SUS SCROFA).
An imbalance between myocardial functional requirements and the capacity of the CORONARY VESSELS to supply sufficient blood flow. It is a form of MYOCARDIAL ISCHEMIA (insufficient blood supply to the heart muscle) caused by a decreased capacity of the coronary vessels.
Surgical union or shunt between ducts, tubes or vessels. It may be end-to-end, end-to-side, side-to-end, or side-to-side.
Not an aneurysm but a well-defined collection of blood and CONNECTIVE TISSUE outside the wall of a blood vessel or the heart. It is the containment of a ruptured blood vessel or heart, such as sealing a rupture of the left ventricle. False aneurysm is formed by organized THROMBUS and HEMATOMA in surrounding tissue.
Laboratory tests used to evaluate how well the kidneys are working through examination of blood and urine.
Minimally invasive procedures, diagnostic or therapeutic, performed within the BLOOD VESSELS. They may be perfomed via ANGIOSCOPY; INTERVENTIONAL MAGNETIC RESONANCE IMAGING; INTERVENTIONAL RADIOGRAPHY; or INTERVENTIONAL ULTRASONOGRAPHY.
The plan and delineation of prostheses in general or a specific prosthesis.
A strain of albino rat used widely for experimental purposes because of its calmness and ease of handling. It was developed by the Sprague-Dawley Animal Company.
Drugs used in the treatment of acute or chronic vascular HYPERTENSION regardless of pharmacological mechanism. Among the antihypertensive agents are DIURETICS; (especially DIURETICS, THIAZIDE); ADRENERGIC BETA-ANTAGONISTS; ADRENERGIC ALPHA-ANTAGONISTS; ANGIOTENSIN-CONVERTING ENZYME INHIBITORS; CALCIUM CHANNEL BLOCKERS; GANGLIONIC BLOCKERS; and VASODILATOR AGENTS.
The artery supplying nearly all the left half of the transverse colon, the whole of the descending colon, the sigmoid colon, and the greater part of the rectum. It is smaller than the superior mesenteric artery (MESENTERIC ARTERY, SUPERIOR) and arises from the aorta above its bifurcation into the common iliac arteries.
Aneurysm caused by a tear in the TUNICA INTIMA of a blood vessel leading to interstitial HEMORRHAGE, and splitting (dissecting) of the vessel wall, often involving the AORTA. Dissection between the intima and media causes luminal occlusion. Dissection at the media, or between the media and the outer adventitia causes aneurismal dilation.
Formation of an infarct, which is NECROSIS in tissue due to local ISCHEMIA resulting from obstruction of BLOOD CIRCULATION, most commonly by a THROMBUS or EMBOLUS.
The condition of an anatomical structure's being constricted beyond normal dimensions.
Use or insertion of a tubular device into a duct, blood vessel, hollow organ, or body cavity for injecting or withdrawing fluids for diagnostic or therapeutic purposes. It differs from INTUBATION in that the tube here is used to restore or maintain patency in obstructions.
Precursor of epinephrine that is secreted by the adrenal medulla and is a widespread central and autonomic neurotransmitter. Norepinephrine is the principal transmitter of most postganglionic sympathetic fibers and of the diffuse projection system in the brain arising from the locus ceruleus. It is also found in plants and is used pharmacologically as a sympathomimetic.
A technetium diagnostic aid used in renal function determination.
NECROSIS occurring in the MIDDLE CEREBRAL ARTERY distribution system which brings blood to the entire lateral aspects of each CEREBRAL HEMISPHERE. Clinical signs include impaired cognition; APHASIA; AGRAPHIA; weak and numbness in the face and arms, contralaterally or bilaterally depending on the infarction.
The continuation of the subclavian artery; it distributes over the upper limb, axilla, chest and shoulder.
An aspect of personal behavior or lifestyle, environmental exposure, or inborn or inherited characteristic, which, on the basis of epidemiologic evidence, is known to be associated with a health-related condition considered important to prevent.
Pain emanating from below the RIBS and above the ILIUM.
A free radical gas produced endogenously by a variety of mammalian cells, synthesized from ARGININE by NITRIC OXIDE SYNTHASE. Nitric oxide is one of the ENDOTHELIUM-DEPENDENT RELAXING FACTORS released by the vascular endothelium and mediates VASODILATION. It also inhibits platelet aggregation, induces disaggregation of aggregated platelets, and inhibits platelet adhesion to the vascular endothelium. Nitric oxide activates cytosolic GUANYLATE CYCLASE and thus elevates intracellular levels of CYCLIC GMP.
Surgical excision, performed under general anesthesia, of the atheromatous tunica intima of an artery. When reconstruction of an artery is performed as an endovascular procedure through a catheter, it is called ATHERECTOMY.
Pathological processes involving any of the BLOOD VESSELS in the cardiac or peripheral circulation. They include diseases of ARTERIES; VEINS; and rest of the vasculature system in the body.
Sudden ISCHEMIA in the RETINA due to blocked blood flow through the CENTRAL RETINAL ARTERY or its branches leading to sudden complete or partial loss of vision, respectively, in the eye.
An abnormal balloon- or sac-like dilatation in the wall of AORTA.
The tearing or bursting of the weakened wall of the aneurysmal sac, usually heralded by sudden worsening pain. The great danger of a ruptured aneurysm is the large amount of blood spilling into the surrounding tissues and cavities, causing HEMORRHAGIC SHOCK.
An octapeptide that is a potent but labile vasoconstrictor. It is produced from angiotensin I after the removal of two amino acids at the C-terminal by ANGIOTENSIN CONVERTING ENZYME. The amino acid in position 5 varies in different species. To block VASOCONSTRICTION and HYPERTENSION effect of angiotensin II, patients are often treated with ACE INHIBITORS or with ANGIOTENSIN II TYPE 1 RECEPTOR BLOCKERS.
Pathological processes involving any part of the AORTA.
The species Oryctolagus cuniculus, in the family Leporidae, order LAGOMORPHA. Rabbits are born in burrows, furless, and with eyes and ears closed. In contrast with HARES, rabbits have 22 chromosome pairs.
A neurotransmitter found at neuromuscular junctions, autonomic ganglia, parasympathetic effector junctions, a subset of sympathetic effector junctions, and at many sites in the central nervous system.
Blood clot formation in any part of the CAROTID ARTERIES. This may produce CAROTID STENOSIS or occlusion of the vessel, leading to TRANSIENT ISCHEMIC ATTACK; CEREBRAL INFARCTION; or AMAUROSIS FUGAX.
Application of a ligature to tie a vessel or strangulate a part.
The portion of the descending aorta proceeding from the arch of the aorta and extending to the DIAPHRAGM, eventually connecting to the ABDOMINAL AORTA.
The main trunk of the systemic arteries.
Arteries which supply the dura mater.
The transference of a kidney from one human or animal to another.
Abrupt reduction in kidney function. Acute kidney injury encompasses the entire spectrum of the syndrome including acute kidney failure; ACUTE KIDNEY TUBULAR NECROSIS; and other less severe conditions.
A strain of albino rat developed at the Wistar Institute that has spread widely at other institutions. This has markedly diluted the original strain.
Delivery of drugs into an artery.
Radiography of the vascular system of the brain after injection of a contrast medium.
Unanticipated information discovered in the course of testing or medical care. Used in discussions of information that may have social or psychological consequences, such as when it is learned that a child's biological father is someone other than the putative father, or that a person tested for one disease or disorder has, or is at risk for, something else.
Naturally occurring or experimentally induced animal diseases with pathological processes sufficiently similar to those of human diseases. They are used as study models for human diseases.
Studies to determine the advantages or disadvantages, practicability, or capability of accomplishing a projected plan, study, or project.
Narrowing or stricture of any part of the CAROTID ARTERIES, most often due to atherosclerotic plaque formation. Ulcerations may form in atherosclerotic plaques and induce THROMBUS formation. Platelet or cholesterol emboli may arise from stenotic carotid lesions and induce a TRANSIENT ISCHEMIC ATTACK; CEREBROVASCULAR ACCIDENT; or temporary blindness (AMAUROSIS FUGAX). (From Adams et al., Principles of Neurology, 6th ed, pp 822-3)
The vein which drains the foot and leg.
Absence of urine formation. It is usually associated with complete bilateral ureteral (URETER) obstruction, complete lower urinary tract obstruction, or unilateral ureteral obstruction when a solitary kidney is present.
Rhythmic, intermittent propagation of a fluid through a BLOOD VESSEL or piping system, in contrast to constant, smooth propagation, which produces laminar flow.
Diagnostic and therapeutic procedures that are invasive or surgical in nature, and require the expertise of a specially trained radiologist. In general, they are more invasive than diagnostic imaging but less invasive than major surgery. They often involve catheterization, fluoroscopy, or computed tomography. Some examples include percutaneous transhepatic cholangiography, percutaneous transthoracic biopsy, balloon angioplasty, and arterial embolization.
In screening and diagnostic tests, the probability that a person with a positive test is a true positive (i.e., has the disease), is referred to as the predictive value of a positive test; whereas, the predictive value of a negative test is the probability that the person with a negative test does not have the disease. Predictive value is related to the sensitivity and specificity of the test.
An effective non-ionic, water-soluble contrast agent which is used in myelography, arthrography, nephroangiography, arteriography, and other radiographic procedures. Its low systemic toxicity is the combined result of low chemotoxicity and low osmolality.
Substances used to allow enhanced visualization of tissues.
The removal or interruption of some part of the sympathetic nervous system for therapeutic or research purposes.
Binary classification measures to assess test results. Sensitivity or recall rate is the proportion of true positives. Specificity is the probability of correctly determining the absence of a condition. (From Last, Dictionary of Epidemiology, 2d ed)
Conditions in which the KIDNEYS perform below the normal level in the ability to remove wastes, concentrate URINE, and maintain ELECTROLYTE BALANCE; BLOOD PRESSURE; and CALCIUM metabolism. Renal insufficiency can be classified by the degree of kidney damage (as measured by the level of PROTEINURIA) and reduction in GLOMERULAR FILTRATION RATE.
A spectrum of congenital, inherited, or acquired abnormalities in BLOOD VESSELS that can adversely affect the normal blood flow in ARTERIES or VEINS. Most are congenital defects such as abnormal communications between blood vessels (fistula), shunting of arterial blood directly into veins bypassing the CAPILLARIES (arteriovenous malformations), formation of large dilated blood blood-filled vessels (cavernous angioma), and swollen capillaries (capillary telangiectases). In rare cases, vascular malformations can result from trauma or diseases.
Levels within a diagnostic group which are established by various measurement criteria applied to the seriousness of a patient's disorder.
The relationship between the dose of an administered drug and the response of the organism to the drug.
The qualitative or quantitative estimation of the likelihood of adverse effects that may result from exposure to specified health hazards or from the absence of beneficial influences. (Last, Dictionary of Epidemiology, 1988)
The force that opposes the flow of BLOOD through a vascular bed. It is equal to the difference in BLOOD PRESSURE across the vascular bed divided by the CARDIAC OUTPUT.
An alkaloid found in opium but not closely related to the other opium alkaloids in its structure or pharmacological actions. It is a direct-acting smooth muscle relaxant used in the treatment of impotence and as a vasodilator, especially for cerebral vasodilation. The mechanism of its pharmacological actions is not clear, but it apparently can inhibit phosphodiesterases and it may have direct actions on calcium channels.
A non-steroidal anti-inflammatory agent (NSAID) that inhibits the enzyme cyclooxygenase necessary for the formation of prostaglandins and other autacoids. It also inhibits the motility of polymorphonuclear leukocytes.
A class of drugs whose main indications are the treatment of hypertension and heart failure. They exert their hemodynamic effect mainly by inhibiting the renin-angiotensin system. They also modulate sympathetic nervous system activity and increase prostaglandin synthesis. They cause mainly vasodilation and mild natriuresis without affecting heart rate and contractility.
A strain of Rattus norvegicus used as a normotensive control for the spontaneous hypertensive rats (SHR).
An alpha-1 adrenergic agonist used as a mydriatic, nasal decongestant, and cardiotonic agent.
A non-selective inhibitor of nitric oxide synthase. It has been used experimentally to induce hypertension.
Formation and development of a thrombus or blood clot in the blood vessel.
Endogenously-synthesized compounds that influence biological processes not otherwise classified under ENZYMES; HORMONES or HORMONE ANTAGONISTS.
The use of ultrasound to guide minimally invasive surgical procedures such as needle ASPIRATION BIOPSY; DRAINAGE; etc. Its widest application is intravascular ultrasound imaging but it is useful also in urology and intra-abdominal conditions.
A branch of the external carotid artery which distributes to the deep structures of the face (internal maxillary) and to the side of the face and nose (external maxillary).
Pathological processes of the KIDNEY or its component tissues.
An iron chelating agent with properties like EDETIC ACID. DTPA has also been used as a chelator for other metals, such as plutonium.
A birth defect characterized by the narrowing of the AORTA that can be of varying degree and at any point from the transverse arch to the iliac bifurcation. Aortic coarctation causes arterial HYPERTENSION before the point of narrowing and arterial HYPOTENSION beyond the narrowed portion.
A stable prostaglandin endoperoxide analog which serves as a thromboxane mimetic. Its actions include mimicking the hydro-osmotic effect of VASOPRESSIN and activation of TYPE C PHOSPHOLIPASES. (From J Pharmacol Exp Ther 1983;224(1): 108-117; Biochem J 1984;222(1):103-110)
The circulation of blood through the CORONARY VESSELS of the HEART.
The splitting of the vessel wall in one or both (left and right) internal carotid arteries (CAROTID ARTERY, INTERNAL). Interstitial hemorrhage into the media of the vessel wall can lead to occlusion of the internal carotid artery and aneurysm formation.
Regional infusion of drugs via an arterial catheter. Often a pump is used to impel the drug through the catheter. Used in therapy of cancer, upper gastrointestinal hemorrhage, infection, and peripheral vascular disease.
Pathologic deposition of calcium salts in tissues.
Adverse functional, metabolic, or structural changes in ischemic tissues resulting from the restoration of blood flow to the tissue (REPERFUSION), including swelling; HEMORRHAGE; NECROSIS; and damage from FREE RADICALS. The most common instance is MYOCARDIAL REPERFUSION INJURY.
Blocking of a blood vessel by CHOLESTEROL-rich atheromatous deposits, generally occurring in the flow from a large artery to small arterial branches. It is also called arterial-arterial embolization or atheroembolism which may be spontaneous or iatrogenic. Patients with spontaneous atheroembolism often have painful, cyanotic digits of acute onset.
Radiography of any part of the urinary tract.
Types of spiral computed tomography technology in which multiple slices of data are acquired simultaneously improving the resolution over single slice acquisition technology.
That phase of a muscle twitch during which a muscle returns to a resting position.
A value equal to the total volume flow divided by the cross-sectional area of the vascular bed.
A powerful vasodilator used in emergencies to lower blood pressure or to improve cardiac function. It is also an indicator for free sulfhydryl groups in proteins.
Coronary artery bypass surgery on a beating HEART without a CARDIOPULMONARY BYPASS (diverting the flow of blood from the heart and lungs through an oxygenator).
Direct myocardial revascularization in which the internal mammary artery is anastomosed to the right coronary artery, circumflex artery, or anterior descending coronary artery. The internal mammary artery is the most frequent choice, especially for a single graft, for coronary artery bypass surgery.
An NADPH-dependent enzyme that catalyzes the conversion of L-ARGININE and OXYGEN to produce CITRULLINE and NITRIC OXIDE.
A process leading to shortening and/or development of tension in muscle tissue. Muscle contraction occurs by a sliding filament mechanism whereby actin filaments slide inward among the myosin filaments.
Narrowing or constriction of a coronary artery.
The return of a sign, symptom, or disease after a remission.
NECROSIS of the MYOCARDIUM caused by an obstruction of the blood supply to the heart (CORONARY CIRCULATION).
Splitting of the vessel wall in the VERTEBRAL ARTERY. Interstitial hemorrhage into the media of the vessel wall can lead to occlusion of the vertebral artery, aneurysm formation, or THROMBOEMBOLISM. Vertebral artery dissection is often associated with TRAUMA and injuries to the head-neck region but can occur spontaneously.
Insertion of a catheter into a peripheral artery, vein, or airway for diagnostic or therapeutic purposes.
A volatile vasodilator which relieves ANGINA PECTORIS by stimulating GUANYLATE CYCLASE and lowering cytosolic calcium. It is also sometimes used for TOCOLYSIS and explosives.
Surgical insertion of BLOOD VESSEL PROSTHESES, or transplanted BLOOD VESSELS, or other biological material to repair injured or diseased blood vessels.
A repeat operation for the same condition in the same patient due to disease progression or recurrence, or as followup to failed previous surgery.
Devices to be inserted into veins or arteries for the purpose of carrying fluids into or from a peripheral or central vascular location. They may include component parts such as catheters, ports, reservoirs, and valves. They may be left in place temporarily for therapeutic or diagnostic purposes.
An involuntary or voluntary pause in breathing, sometimes accompanied by loss of consciousness.
Obstruction of flow in biological or prosthetic vascular grafts.
Blocking of a blood vessel by an embolus which can be a blood clot or other undissolved material in the blood stream.
A strain of Rattus norvegicus with elevated blood pressure used as a model for studying hypertension and stroke.
An abnormal balloon- or sac-like dilatation in the wall of the THORACIC AORTA. This proximal descending portion of aorta gives rise to the visceral and the parietal branches above the aortic hiatus at the diaphragm.
Procedures in which placement of CARDIAC CATHETERS is performed for therapeutic or diagnostic procedures.
The condition of an anatomical structure's being dilated beyond normal dimensions.

The evolution of early fibromuscular lesions hemodynamically induced in the dog renal artery. I. Light and transmission electron microscopy. (1/1299)

In view of the important roles of arterial intimal fibromuscular lesions as precursors of atherosclerotic plaque and occlusive lesions in arterial reconstructions, a model has been developed for the rapid hemodynamic induction of these lesions by anastomosis of the dog right renal artery to the inferior vena cava. Light and transmission electron microscopic observations were made on the arterial shunt after periods of rapid flow ranging form 10 minutes to 2 hours to identify initial factor(s) and evolutionary mechanisms in the etiology of the lesions. The sequence of events included aberrations in ruthenium red staining of the endothelial luminal membrane at 10 minutes, multilayered thickening of the subendothelial basement membrane (BM) at 15 minutes, and initial reorientation and migration of smooth muscle cells (SMC) into the intima along with the appearance of areas of degeneration of the internal elastic lamina (IEL) at 30 minutes. The endothelial cells were still intact in some areas overlying the SMC migration and IEL degeneration, but they were separating from the surface in other such areas. As subendothelium became exposed, some platelet adherence was noted. By 2 hours, the entire wall reaction was fully developed. Initial observations indicate that in the evolution of this hemodynamically induced lesion visible alteration in the endothelial cells is not prerequisite to degeneration of the underlying IEL and reorientation and migration of medial SMC.  (+info)

Prevalence of angiographic atherosclerotic renal artery disease and its relationship to the anatomical extent of peripheral vascular atherosclerosis. (2/1299)

BACKGROUND: Recognition of the possible presence of atherosclerotic renal artery disease (ARAD) is important because of its progressive nature, and because of the potential for precipitating an acute deterioration in renal function by administration of angiotensin-converting enzyme inhibitors. The aim of this study was to identify the prevalence of ARAD in patients undergoing peripheral angiography and its relationship to the extent of their peripheral vascular disease (PVD). METHODS: The reports of the 218 patients who underwent peripheral angiography to investigate PVD in one centre in a calendar year, and in whom it was possible to image the renal arteries, were analysed retrospectively. The presence of atherosclerotic disease in the renal, aortic, iliac, femoral and distal areas was recorded for each patient. RESULTS: The prevalence of ARAD was 79/218 (36.2%). The greater the number of atherosclerotic areas of the arterial tree, the higher the prevalence of ARAD. Patients with aortic disease and bilateral iliac, femoral and distal vessel disease had the highest incidence of ARAD 19/38 (50%). The incidence of ARAD in those with femoral artery atherosclerosis was significantly higher than in those without femoral artery atherosclerosis (42.1% compared with 9.7%, P=0.001 chi2). There was no significant difference in those groups with or without iliac and distal disease. None of the 11 patients with normal femoral and iliac arteries had ARAD. CONCLUSIONS: Renal artery atherosclerosis is a common occurrence in patients with PVD. If extensive PVD is recognized during aortography, a high flush should be considered to examine the renal arteries, if they are not included in the main study.  (+info)

NH2-terminal fragments of the 130 kDa subunit of myosin phosphatase increase the Ca2+ sensitivity of porcine renal artery. (3/1299)

1. The effects of the NH2-terminal fragments of M130, a 130 kDa regulatory subunit of smooth muscle myosin phosphatase, on contraction and myosin light chain phosphorylation were investigated in Triton X-100-permeabilized porcine renal artery. 2. Incubation of the permeabilized fibres with M1301-633 (a fragment containing amino acid residues 1-633) or M13044-633 enhanced the Ca2+-induced contraction and shifted the [Ca2+]i-force relationship to the left (EC50 of Ca2+: 330 nM, control, without fragment; 145 nM, M1301-633; 163 nM, M13044-633). Pre-incubation for 1-3 h was needed for these long constructs. 3. M1301-374, M130304-511 and M130297-374, i.e. relatively short constructs compared with M1301-633 and M13044-633, also induced leftward shifts of the [Ca2+]i-force relationship (EC50 of Ca2+: 65 nM, 72 nM and 180 nM, respectively). However, these required no pre-incubation. 4. Deletion of residues 304-374 from the most potent construct, M1301-374, abolished the Ca2+-sensitizing effect. 5. Wortmannin inhibited the enhancement of contraction induced by M130 fragments when added before contraction was initiated and partially inhibited the effects when added after steady-state contraction. 6. M1301-374 slowed the rate of relaxation in Ca2+-free medium. The time for 50 % relaxation with this fragment was 510 +/- 51 s, compared with 274 +/- 14 s for control. 7. The levels of myosin light chain phosphorylation (22.4 %) and force (34. 5 %) obtained with 300 nM Ca2+ were increased by 3 microM M1301-374 to 35.7 and 92.2 %, respectively. However, M1301-374 had no effect on the phosphorylation-force relationship. 8. In conclusion, the NH2-terminal M130 fragments containing residues 304-374 inhibited myosin phosphatase, increased myosin light chain phosphorylation and increased the Ca2+ sensitivity of the contractile apparatus in permeabilized porcine renal artery.  (+info)

Altered renal hemodynamics and impaired myogenic responses in the fawn-hooded rat. (4/1299)

The present study examined whether an abnormality in the myogenic response of renal arterioles that impairs autoregulation of renal blood flow (RBF) and glomerular capillary pressure (PGC) contributes to the development of renal damage in fawn-hooded hypertensive (FHH) rats. Autoregulation of whole kidney, cortical, and medullary blood flow and PGC were compared in young (12 wk old) FHH and fawn-hooded low blood pressure (FHL) rats in volume-replete and volume-expanded conditions. Baseline RBF, cortical and medullary blood flow, and PGC were significantly greater in FHH than in FHL rats. Autoregulation of renal and cortical blood flow was significantly impaired in FHH rats compared with results obtained in FHL rats. Myogenically mediated autoregulation of PGC was significantly greater in FHL than in FHH rats. PGC rose from 46 +/- 1 to 71 +/- 2 mmHg in response to an increase in renal perfusion pressure from 100 to 150 mmHg in FHH rats, whereas it only increased from 39 +/- 2 to 53 +/- 1 mmHg in FHL rats. Isolated perfused renal interlobular arteries from FHL rats constricted by 10% in response to elevations in transmural pressure from 70 to 120 mmHg. In contrast, the diameter of vessels from FHH rats increased by 15%. These results indicate that the myogenic response of small renal arteries is altered in FHH rats, and this contributes to an impaired autoregulation of renal blood flow and elevations in PGC in this strain.  (+info)

Cyclosporine-induced renal artery smooth muscle contraction is associated with increases in the phosphorylation of specific contractile regulatory proteins. (5/1299)

Cyclosporine A (CSA) is a type 2B phosphatase inhibitor which can induce contraction of renal artery smooth muscle. In this investigation, we examined the phosphorylation events associated with CSA-induced contraction of bovine renal artery smooth muscle. Contractile responses were determined in a muscle bath and the corresponding phosphorylation events were determined with whole cell phosphorylation and two-dimensional gel electrophoresis. CSA-induced contractions were associated with increases in the phosphorylation of the 20 kDa myosin light chains (MLC20) and different isoforms of the small heat shock protein, HSP27. Cyclic nucleotide-dependent relaxation of CSA-induced contractions was associated with increases in the phosphorylation of another small heat shock protein, HSP20, and decreases in the phosphorylation of the MLC20, and some isoforms of HSP27. These data suggest that CSA-induced contraction and relaxation of vascular smooth muscle is associated with increases in the phosphorylation of specific contractile regulatory proteins.  (+info)

Hypotensive response to captopril: a potential pitfall of scintigraphic assessment for renal artery stenosis. (6/1299)

A characteristic pattern seen on captopril renography is described that is due to systemic hypotensive response. Most patients with these findings on captopril renography do not receive renal artery angiograms in our clinic because it is usually recognized. However, this pattern has received little attention in the medical literature and may be misinterpreted as being due to physiologically significant renal artery hypertension. METHODS: Over the last 3 y, renal artery angiograms were performed on three patients with systemic hypotensive response pattern on captopril renography. This allowed a unique opportunity to correlate the results of the captopril renogram with the renal artery angiograms in this patient population. Captopril renography was performed with a glomerular filtration agent, diethylenetriamine pentaacetic acid (DTPA), and a tubular agent, o-iodohipurate (OIH). RESULTS: Renal artery angiograms showed no evidence of renal artery stenosis in three patients with systemic hypotensive response pattern on captopril renography. Systemic hypotension on captopril renograms results in preserved uptake of both DTPA and OIH and hyperconcentration in the cortex and collecting system. CONCLUSION: The systemic hypotensive response pattern seen on captopril renography is a distinctive pattern that does not represent physiologically significant renal artery stenosis.  (+info)

The effects of crossing porcine renal artery ostia with various endovascular stents. (7/1299)

OBJECTIVES: To compare the effects of crossing renal artery ostia with various stents. METHODS: The renal artery ostia of 24 large white pigs were covered with a Wallstent (nine ostia), a Palmaz stent (nine ostia) and a Memotherm stent (13 ostia). After an interval of 6-15 weeks, aortography, renal pressure and blood samples were performed and the pigs then sacrificed for histological examination. RESULTS: Histological examination revealed an organised collagen matrix with endothelial cells covering the struts in contact with the aorta. This occurred with all stents but was most organised with the Wallstent. This matrix did not involve the renal artery ostia crossed by Wallstents, but in one Palmaz stent and in 12/13 Memotherm stents, a disorganised acellular matrix caused partial ostial occlusion. There was no mean fall in renal artery pressure but traces were damped in 8/13 cases of partial occlusion. There was a rise in serum creatinine in two cases using the Palmaz stent. CONCLUSIONS: Covering renal arteries with the Wallstent appears to be safe in the short-term. Placement of stents with larger struts across renal arteries will require imaging methods, such as intravascular ultrasound (IVUS) to ensure that the ostia are not obstructed.  (+info)

Inhibition of prostaglandin and nitric oxide synthesis prevents cortisol-induced renal vasodilatation in sheep. (8/1299)

Glucocorticoids increase renal blood flow (RBF) and glomerular filtration rate in many species, but the mechanisms involved are unclear. We investigated whether cortisol-induced renal vasodilatation in conscious sheep depends on interactions with prostaglandins or angiotensin II. Intravenous infusion of cortisol (5 mg/h) for 5 h increased renal conductance (RC) by 1.06 +/- 0.24 ml. min-1. mmHg-1 more than vehicle. During intrarenal infusion of indomethacin (0.25 mg. kg-1. h-1), the cortisol-induced increase in RC (0.28 +/- 0.21 ml. min-1. mmHg-1) was significantly reduced. The cortisol-induced rise in RBF (103 +/- 17 ml/min) was not significantly reduced by indomethacin treatment (76 +/- 9 ml/min). Combined intrarenal infusion of indomethacin (0.25 mg. kg-1. h-1) with Nomega-nitro-L-arginine (2.0 mg. kg-1. h-1), a nitric oxide synthase inhibitor, abolished the cortisol-induced increases in both RC and RBF. Inhibition of angiotensin II synthesis with intravenous captopril (40 mg/h) blocked the renal vasoconstrictor action of angiotensin I but did not inhibit the cortisol-induced increases in RBF and RC. This study provides evidence that nitric oxide and prostaglandins play a role in cortisol-induced renal vasodilatation but indicates that this response is independent of an interaction with angiotensin.  (+info)

Superselective transcatheter renal artery embolization for the treatment of hemorrhage from non-iatrogenic blunt renal trauma: report of 16 clinical cases Dapang Rao,1 Haifeng Yu,2 Haibo Zhu,2 Kaiyuan Yu,2 Xiao Hu,3 Liping Xie11Department of Urology, First Affiliated Hospital, Medical College, Zhejiang University, Hangzhou, People's Republic of China; 2Department of Urology, Second Affiliated Hospital of Wenzhou Medical College, Wenzhou, People’s Republic of China; 3Zhejiang University Medical College, Hangzhou, People’s Republic of ChinaObjective: To explore the therapeutic efficacy and outcome of superselective transcatheter renal artery embolization for the treatment of hemorrhage from non-iatrogenic blunt renal trauma (BRT).Methods: Sixteen patients who received superselective transcatheter renal artery embolization for non-iatrogenic BRT hemorrhage between January 2003 and December 2012 were reviewed retrospectively. Spring steel coils with gelatin sponge particles were used to
Renal artery duplex imaging evaluates blood flow velocities and patterns in the aorta and renal arteries. According to the American College of Radiology, Ultrasound using grayscale imaging, Doppler spectral analysis, and color Doppler imaging is a proven and useful procedure for evaluating the renovascular system.. Many patients with hypertension are referred for a renal artery duplex because of their increased risk of renal artery stenosis. Some cases of renovascular hypertension actually develop as a result of an obstruction in the renal arteries. These cases of hypertension can usually be effectively treated by treating the obstruction.. Flow patterns within the kidneys can provide information about damage to the kidneys and extent of renal artery disease from chronic poor blood flow. Color Doppler can show renal artery perfusion and venous return. It may also be used to determine renal transplant rejection.. Indications:. ...
Our study confirms that high-frequency electric stimulation of nerves in renal arteries (RNS), both main and accessory, elicits a substantial BP increase. The amplitude of BP increase after RNS in accessory arteries was similar to that observed in main renal artery trunks, suggesting that sympathetic fibers innervating accessory arteries may play an important role in patients with resistant hypertension. In agreement with our previous work,15 successful RDN of main renal arteries led to a substantial blunting of RNS-related BP increase after electric stimulation of denervated arteries. However, RNS of (nondenervated) accessory arteries was associated with an unchanged BP increase. This residual source of sympathetic activity may explain the lesser benefits of incomplete RDN limited to the main renal artery trunks in patients with accessory arteries.11,12. Our findings may prove to be of major practical relevance. Indeed, the prevalence of renal accessory and multiple arteries varies between 15% ...
Recent studies have indicated that renal arteries can produce 20-hydroxyeicosatetraenoic acid (20-HETE) and suggest the potential involvement of a P450 metabolite of arachidonic acid in the myogenic activation of canine renal arteries. In the present study, the effects of 20-HETE on isolated canine renal arcuate arteries were studied. Administration of 20-HETE to the bath or the lumen at concentrations of 0.01-1 microM produced a graded reduction in the diameter of these vessels. In contrast, 19(R)-HETE was a vasodilator, whereas 19(S)-HETE was relatively inactive. The vasoconstrictor response to 20-HETE was not altered by the cyclooxygenase inhibitor indomethacin, endoperoxide/thromboxane receptor antagonist SQ29548, or combined blockade of the cyclooxygenase, lipoxygenase, and P450 pathways using indomethacin, baicalein, and 7-ethoxyresorufin. The response to 20-HETE was associated with depolarization and a sustained increase in the intracellular calcium concentration in renal vascular smooth ...
The right treatment for an individual depends on the severity of the disease and the persons medical history.. Lifestyle changes such as weight reduction, smoking cessation, exercise and a low-salt and low-fat diet can help slow or prevent renal artery disease. Medication to lower blood pressure is an important part of treatment, along with careful monitoring of the response to the blood pressure medications to be sure the blood pressure is lowered to the treatment goal.. For some patients with significant narrowing of the renal arteries, particularly patients with narrowed areas in the renal arteries on both sides of the body, or those with severe symptoms, a procedure may be recommended to open up the blocked arteries to restore circulation. In some cases, opening the blocked arteries may improve kidney function and may improve control of high blood pressure. Not surprisingly, the techniques used to open blocked renal arteries are very similar to those used to treat blocked coronary ...
We performed EVAR using Gore Excluder. At first, mainbody was implanted under the left renal artery. Next, on the proximal site, wedelivered aortic extender and Zilver stent in advance. After aortic extenderwas implanted just under the right renal artery, we implanted the Zilver stentfor left renal artery. And, final KBT (Kissing balloon technique) was done. Anyendoleak was not detected by final angiography and both side of renal arteryflow was enough. One day after procedure, serum creatinine level increased onblood test. Because we did not detect reduction of renal flow by duplexultra-sonography, we observed as contrast nephropathy. But, serum creatininelevel did not improve. Accordingly, we checked the CT imaging. We weresuspicious of right renal artery occlusion due to stent graft. And, we decided to perform re-intervention for right renalartery occlusion. We inserted 5 Frguiding sheath from right brachial artery. Initial angiogram revealed rightrenal occlusion. After wire crossing with ...
Knowledge of anatomical features of the renal artery is important in prediction, management and control of atherosclerotic renal artery stenosis. These features show population variations but data from black African populations are scarce. The aim of this study was therefore to describe the anatomical features of the renal artery in a black Kenyan population. Six hundred and ten (610) single renal arteries from 305 adult black Kenyans [206 males, 99 females; age range 22 - 79 years] were studied by dissection at Department of Human Anatomy, University of Nairobi, Kenya. Specimens with macroscopic features of stenosis and dilatation were excluded. The implantation angle, length and branching pattern were studied. These features were correlated with intima-media thickness and luminal diameter. The latter were determined by micrometry on Eosin/hematoxylin stained 5 micron sections obtained from the proximal segment of the renal artery. Data was analysed by SPSS version 16.0. Students t-test, was ...
The purpose of this study was to evaluate the effect of renal artery embolization with small and narrowly calibrated microparticles on the coagulation diameter, volume, and shape of radiofrequency...
Another name for Renal Artery Thrombosis is Renal Artery Occlusion. Renal artery occlusion may occur suddenly or gradually. A sudden renal artery occlusion ...
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TY - JOUR. T1 - Left ventricular mass reduction and hypertrophy regression following renal artery revascularization. T2 - a meta-analysis. AU - Cuspidi, Cesare. AU - Tadic, Marijana. AU - Sala, Carla. AU - Quarti-Trevano, Fosca. AU - Gherbesi, Elisa. AU - Mancia, Giuseppe. AU - Grassi, Guido. N1 - Copyright: This record is sourced from MEDLINE/PubMed, a database of the U.S. National Library of Medicine. PY - 2021/1/1. Y1 - 2021/1/1. N2 - AIM: Few echocardiographic studies have focused on regression of left ventricular hypertrophy (LVH) in patients with renal artery stenosis after revascularization, with inconsistent results. We performed a systematic meta-analysis of these studies in order to offer a comprehensive information on this topic. METHODS: The PubMed, OVID-MEDLINE, and Cochrane library databases were analyzed to search English-language articles published from 1 January 1990 up to 31 March 2020. Studies were identified by crossing the following terms: renal artery stenosis, ...
One-kidney, one clip (1K1C) and two-kidney, one clip (2K1C) Goldblatt hypertension was produced in rats by placing 0.30, 0.25, or 0.20 mm silver clips on the left renal artery. Mean arterial pressure (MAP) and plasma renin activity (PRA) were measured in conscious rats 24 to 28 days after clipping. The MAP in control rats (n = 38) was 116 +/- 1 mm Hg (mean +/- SEM). The 0.30, 0.25, and 0.20 mm clips produced MAPs of 133 +/- 2, 161 +/- 5, and 189 +/- 5 mm Hg, respectively, in 1K1C rats, and 123 +/- 2, 129 +/- 3, and 172 +/- 5 mm Hg in 2K1C rats (n = 17-20). When 1K1C and 2K1C groups were compared, MAP was significantly greater in 1K1C rats at all clip sizes. No treatment groups PRA was different than control (4.8 +/- 0.4 ng AI/ml/hr), except for the 0.20 mm 2K1C rats (16.2 +/- 3.1 ng AI/ml/hr). Renal artery pressure (RAP) was measured in another series of experiments and was not different from control in all but the 0.20 mm 1K1C rats. With identical clip sizes, 2K1C rats showed smaller pressure ...
Accessory renal arteries are a common variant and are present in ~25% (range 20-30%) and are bilateral in ~10% of the population 7. Their proper identification is of utmost importance for surgical planning prior to live donor transplantation 2,3 ...
We have investigated the effects of recombinant human erythropoietin (EPO) on the responses of rat renal arcuate arteries to dopamine, noradrenaline and acetylcholine and on the release of NO from human umbilical vein endothelial cells (HUVEC) in culture. Noradrenaline induced a concentration-dependent constriction and acetylcholine a concentration-dependent relaxation of the vessels. The effects of dopamine were concentration-dependent, leading to relaxation of the vessels at low concentrations and contraction of the vessels at high concentrations. NG-Nitro-L-arginine methyl ester (L-NAME; 0.1 mM) did not change the vasoconstrictor responses to noradrenaline and dopamine, but inhibited the acetylcholine- and dopamine-induced vasorelaxation. Neither 0.1 nor 20 units·ml-1 EPO affected noradrenaline-induced constriction, or dopamine- or acetylcholine-induced relaxation, of the vessels. EPO at 20 units·ml-1 attenuated dopamine-induced constriction of the vessels. This effect was blunted by ...
The kidney receive 20-25 percent of the total cardiac output. In normal healthy individuals, about 1200ml of blood flows through the kidneys each minute. The blood supply to each kidney is usually a single renal artery originates along the lateral surface of the adominal aorta near the level of the superior mesenteric artery. However, there may sometimes be additional small vessels from superior mesenteric, adrenal, spermatic or ovarian arteries.. Almost all of the blood which enters the kidneys at renal hilus, via the renal artery. The renal artery branches to form several interlobar arteries which radiate outward through the renal column between the renal pyramids. The interlobar arteries subdivide themselves to arcuate arteries, which pass along the boundary between cortex and medulla. Each arcuate artery branches and travel out at a right angle, through the cortex towards the capsule and gives rise to a number of interlobular arteries, which supply the cortical portions of the adjacent renal ...
My peak systolic velocity of right renal artery is 95 cm/sec whereas left renal artery is 215cm/sec. (Normal being around 100cm/sec) with turbulence in the mid arterial segment. My renal artery to aortic ratio is within normal limits at 1.24. There may be a stenosis and it may not be hemodynamically significant ...
Renal artery disease is a form of peripheral artery disease that reduces blood flow through the renal arteries, which supply blood to the kidneys
Renal artery disease is a form of peripheral artery disease that reduces blood flow through the renal arteries, which supply blood to the kidneys
Looking for intrarenal arteries? Find out information about intrarenal arteries. blood vessel that conveys blood away from the heart heart, muscular organ that pumps blood to all parts of the body. The rhythmic beating of the heart is a... Explanation of intrarenal arteries
The importance of beta and gamma epithelial Na(+) channel (ENaC) proteins in vascular smooth muscle cell (VSMC)-mediated pressure-induced constriction in renal interlobar arteries has been demonstrated recently. In renal epithelial tissue, ENaC expre
Archives of cardiovascular diseases - Vol. 104 - N° 5 - p. 363-364 - Iconography : Coexisting renal artery aneurysm and adrenal adenoma in resistant hypertension - EM|consulte
|p|Renal artery aneurysm (RAA) occursto focal dilatation of artery secondary to weakness of the arterial intima and media, RAA is a rare condition withan incidence of 0. |/p||p|01 -1%. |/p||p|1R
Often clinically silent and discovered incidentally, FMD accounts for less than 10% of cases of renal artery stenosis (RAS), and although it can affect the intima, in the majority of cases it involves the media, resulting in the typical string of beads appearance (Figure 32-1).1 The cause remains largely unknown; however it may have a genetic component and it is more frequent in hypertensive patients and smokers.2 FMD usually affects women between 15 and 50 years of age, but it can be also observed in males and older patients as well.1 It occurs most frequently in the renal artery, but can also involve the carotid and vertebral arteries, sometimes in association with intracranial aneurysms, as well as other visceral vessels.1,3,4 ...
The aim of this trial is a prospective, randomized comparison of three different techniques for catheter based renal sympathetic denervation. Patients with larger (,5.5 mm) renal arteries are randomized to a treatment with a radiofrequency based catheter of the main renal artery, the main renal artery, its side-branches and accessories or an ultrasound-based denervation of the main renal artery only. The primary endpoint is the change in daytime blood pressure acquired in ambulatory blood pressure measurement at 3 months ...
Another name for Renal Artery Occlusion is Renal Artery Occlusion. The following are some important questions to ask before and after the treatment of ...
A new study published in Journal of endovascular therapy (2014;21:181-190) has evaluated the efficacy of renal denervation therapy for hypertension refractory to renal artery stenting.. The study included ten patients (6 women; mean age 70.0±5.1 years) with an office systolic blood pressure ,160 mmHg despite taking ≥3 antihypertensive drugs and uni- or bilateral renal artery stenting. These patients were treated with RDN. Radiofrequency (RF) energy was delivered to the native segment of the artery keeping a 5-mm safe distance from the stented segments. Standardized office and ambulatory blood pressure measurements, medication, and renal assessment, including renal duplex ultrasound and renal function, were determined at baseline and on follow-up to 12 months.. ...
There have been varied definitions in the literature of renal functional benefit after renal artery stent placement, with most reports relying on an absolute value of the change in serum creatinine (binary or dichotomous outcome) as the parameter for success. In this model, the absolute value of GFR after treatment is used to construct thresholds, which define discrete reporting of outcomes, ie, failure or benefit. However, although such absolute binary determinations may be used in assessing renal function, it is important to recognize that the impact of intervention may be manifested not only by a change in the absolute value of GFR but also as stabilization or slowed decline in previously diminishing GFR.153-157⇓⇓⇓⇓ In other words, the trend in renal function over time may provide an equally valid and valuable assessment of treatment effect as the absolute measure of renal function at discrete time points after intervention. Hence, renal function benefit may be evaluated by both ...
TY - JOUR. T1 - Renal angiography. AU - Viamonte, Manuel. AU - Parks, Raymond E.. PY - 1963/12. Y1 - 1963/12. N2 - The authors present well selected examples to point up the diagnostic value of renal angiography in instonces of both hypertension and in local disease.. AB - The authors present well selected examples to point up the diagnostic value of renal angiography in instonces of both hypertension and in local disease.. UR - http://www.scopus.com/inward/record.url?scp=75549104415&partnerID=8YFLogxK. UR - http://www.scopus.com/inward/citedby.url?scp=75549104415&partnerID=8YFLogxK. U2 - 10.1097/00007611-196312000-00001. DO - 10.1097/00007611-196312000-00001. M3 - Article. C2 - 14103112. AN - SCOPUS:75549104415. VL - 56. SP - 1335. EP - 1343. JO - Southern Medical Journal. JF - Southern Medical Journal. SN - 0038-4348. IS - 12. ER - ...
TY - JOUR. T1 - Renal artery anatomy assessed by quantitative analysis of selective renal angiography in 1,000 patients with hypertension. AU - Lauder, Lucas. AU - Ewen, Sebastian. AU - Tzafriri, Abraham R.. AU - Edelman, Elazer R.. AU - Lüscher, Thomas F.. AU - Blankestijn, Peter J.. AU - Dörr, Oliver. AU - Schlaich, Markus. AU - Sharif, Faisal. AU - Voskuil, Michiel. AU - Zeller, Thomas. AU - Ukena, Christian. AU - Scheller, Bruno. AU - Böhm, Michael. AU - Mahfoud, Felix. PY - 2018/5/1. Y1 - 2018/5/1. N2 - Aims: With increasing attention to renovascular causes and targets for hypertension there arises a critical need for more detailed knowledge of renal arterial anatomy. However, a standardised nomenclature is lacking. The present study sought to develop a standardised nomenclature for renal anatomy considering the complexity and variation of the renal arterial tree and to assess the applicability of the nomenclature. Methods and results: One thousand hypertensive patients underwent ...
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Chest X-Ray to evaluate cardiac size; echocardiogram to assess valves and ejection fraction as well as LVH; bloodwork includes a basic chemistry to asses for electrolytes and creatinine; 24 hours fractionated urinary metanephrines and cathecolamines; renal ultrasound; nuclear imaging of kidneys with Lasix to assess renal function; MRA of renal arteries as a non invasive approach to renovascular hypertension ...
I have had uncontrolled hypertension for 18 months now, despite being on Antenolol w/ diuretic and Clonidine .2 mg/1per day, plus trying all the different types of bp meds that didnt work. I went to the dr for something unrelated and my bp was 155/115, so he suggested a renal artery scan. I showed some blockage in one of my arteries. I went to a surgeon for follow up and she suggested a renal bypass. She said since I am young, 27, that I would outlive a stint and therefore wanted to do something more permanent. Im getting a second opinion in a few weeks ...
In most cases it is possible to trace the artery back to its anastomosis with the iliac artery, using colour Doppler. If the site of the stenosis is identified, spectral Doppler will demonstrate an increase in peak systolic velocity at the lesion, followed by poststenotic turbulence (Fig. ultrasound images below). This can be difficult to pinpoint with MRA, especially if bowel is overlying the vessel. A delayed systolic rise (the parvus tardus waveform) can be identified in the intrarenal spectral Doppler waveforms, as for the native kidney (see above). The diagnosis however is primarily made on the peak systolic velocity within the renal artery. A value of , 2.5 m/s is normal while , 2.5 m/s constitutes RAS. If the stenosis is severe, it may be difficult to identify colour flow in the kidney and the waveform may be reduced in velocity with a tiny, damped trace in the main vessel. A stenosis affecting an interlobar artery may result in focal, segmental changes in the kidney. In general, contrast ...
In the present study we investigated the mechanism of nitric oxide induced relaxation of renal arteries, with or without endothelium, taken from normotensive and spontaneously hypertensive (SH) rats. With this purpose in mind, the effects of the nitric oxide donor, sodium nitroprusside (SNP), with and without L-arg in the medium, on isolated rat renal artery relaxation were studied. Relaxing effect of SNP was higher in normotensive (10-5 M of SNP caused 220% of relaxation in the cases with endothelium and 240% without endothelium), in comparison with SH rats (100% of relaxation with endothelium and 150% without). L-arg antagonized the relaxing effect of SNP in the examined renal arteries, more in normotensive (100-160% with endothelium and 110-195% without) than in hypertensive ones (0-10% with endothelium and 35-75% without) at SNP concentrations 10-7-10-5 M, respectively (*P,0.05; **P,0.001). L-arg did not significantly change relaxing effect of SNP in the isolated renal arteries with ...
In the present study we investigated the mechanism of nitric oxide induced relaxation of renal arteries, with or without endothelium, taken from normotensive and spontaneously hypertensive (SH) rats. With this purpose in mind, the effects of the nitric oxide donor, sodium nitroprusside (SNP), with and without L-arg in the medium, on isolated rat renal artery relaxation were studied. Relaxing effect of SNP was higher in normotensive (10-5 M of SNP caused 220% of relaxation in the cases with endothelium and 240% without endothelium), in comparison with SH rats (100% of relaxation with endothelium and 150% without). L-arg antagonized the relaxing effect of SNP in the examined renal arteries, more in normotensive (100-160% with endothelium and 110-195% without) than in hypertensive ones (0-10% with endothelium and 35-75% without) at SNP concentrations 10-7-10-5 M, respectively (*P,0.05; **P,0.001). L-arg did not significantly change relaxing effect of SNP in the isolated renal arteries with ...
Before reaching the hilus of the kidney, each artery divides into four or five branches; the greater number of these (anterior branches) lie between the renal vein and ureter, the vein being in front, the ureter behind, but one or more branches (posterior branches) are usually situated behind the ureter. Each vessel gives off some small inferior suprarenal branches to the suprarenal gland, the ureter, and the surrounding cellular tissue and muscles. One or two accessory renal arteries are frequently found, especially on the left side since they usually arise from the aorta, and may come off above (more common) or below the main artery. Instead of entering the kidney at the hilus, they usually pierce the upper or lower part of the organ. ...
The effect of aging on responses of vascular smooth muscles to atrial natriuretic peptide (ANP) and other vasodilator substances was investigated in isolated rat aortae, rat renal arteries and monkey renal arteries which were precontracted with norepinephrine. There was no significant difference in the ANP-induced maximum relaxation between young and old rat aortae. However, the concentration of agonists causing a 50% relaxation (ED50) value for the old rats was 7.3 times greater than that for the young ones. In rat and monkey renal arteries, the ED50 ratios were 6.2 and 3.8, respectively. The relaxant responses of the rat aortae to isoproterenol and acetylcholine also decreased with increasing age. The ED50 ratios for isoproterenol and acetylcholine were more than 40 and 17, respectively. The maximum relaxation induced by 10(-5) M isoproterenol also decreased significantly in the aortae from the older rats. On the other hand, the ED50 for nitroprusside, nifedipine- and potassium-induced ...
The purpose of this study was to gain more information on the structure of different layers of renal arteryand comparing these structures in post-natal male and female sheep. To do so, right and left renal arteries of6 adult and 6 newborn animals were dissected; the middle parts of arteries were only collected. After tissueprocessing using paraffin embedding method, 5-6-μm sections were cut and stained with haematoxylin andeosin, green Massons trichrome and Verhoeffs elastic fiber methods. Three layers were identified in thewall of artery in both sexes. In tunica media the number of rows of circular smooth muscle cells was 15-25rows in newborn and 30-40 in adult sheep. External elastic membrane was visible in adult and wasstructurally thinner than the internal membrane. Tunica adventitia was visible in all samples and collagenfibers and smooth muscles bundle were distinguished. The existence of these muscle bundles in externallayer of renal artery was not reported previously in domestic animals and
WHAT IS THE DIFFERENCE BETWEEN CAROTID AND RENAL ANGIOGRAPHY / ANGIOPLASTY?. There is no difference as far as the procedure is concerned except the location of the deployment of the catheter. The catheter is inserted from the same location in the groin/arm, as the case may be. In this case the catheter is moved to the kidneys region instead of the heart.. During renal Angiography usually only non ionic contrast material is used to prevent any lasting effect on the kidneys.. ...
Variations in the urogenital vascular anomalies in the abdomen are very common. However, they warrant attention due to their importance in operative, diagnostic, and endovascular procedures. During routine dissection of abdomen in a male cadaver, unique urogenital vascular anomalies were observed. On the right side, the right renal artery was found to be originated from the abdominal aorta at the level of L2 and divided into five branches; the right testicular artery and inferior suprarenal artery originated from the lower branch. We also observed, accessory renal artery arising from abdominal aorta at the level of L3 and double renal veins on right side. On the left side, we found left renal artery originating from the abdominal aorta at the level of L2 and divided into two branches. Double testicular (medial and lateral) arteries were also observed. In addition to these vascular variations, bilateral kinking of ureter at the pelviureteric junction was also observed. Although the variations in ...
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ABSTRACT The peculiarity of renal vascular variations challenges the surgeons and interventional radiologists with the task of defining the singular pattern of origin and entry of arteries into the kidney. Presence of multiple renal arteries is a perplexing predicament for the surgeon during interventional procedures as there are uncertainties about the future outcome. The present study reports a variant renal vasculature and aspires to emphasize its embryological basis and surgical implications. During routine cadaveric dissection, we observed three renal arteries arising separately from the abdominal aorta and entering the left kidney at the hilum. The inferior suprarenal artery emerged from the most superior renal artery while the inferior most renal artery crossed superficial to the ureter to enter the hilum. The persistence of mesonephric arteries is the culprit in most renal vascular variants as was seen in the present study. Morphometric analysis revealed the three arteries had similar ...
Renal Artery Calcium Is Independently Associated With Hypertension. Matthew A. Allison, Elizabeth O. Lillie, Dominic DiTomasso, C. Michael Wright, Michael H. Criqui. It has been proposed that renal microvascular disease is the central and unifying pathophysiologic mechanism of hypertension. The extent of calcified atheromatous plaque found on computed tomography is a valid and reproducible measure of the total atherosclerotic plaque burden in a vascular bed. In this study of 1,435 men and women, the presence of calcified atherosclerosis in the renal arteries was significantly associated with the diagnosis of hypertension, independent of traditional cardiovascular disease risk factors and the extent of calcified atherosclerosis in the nonrenal vasculature. ...
Patient History. An 83-year-old patient presents with chronic angina and difficult to control hypertension. In spite of 3 different antihypertensive medications, her blood pressure is consistently over 180/90. Noninvasive testing suggested right renal artery stenosis.. Methods. We went in the right groin and used a Jr4 diagnostic catheter for a renal angiogram. The right renal artery was 80% stenosed (Video 1). We passed a .014 Cougar wire (Medtronic) and predilated the stenosis with a 3.5 AngioScore balloon (Spectranetics,). We then passed a 5.0mm x 18mm Herculink stent (Abbott) (Video 2). We then passed the Flash Ostial balloon system (Cardinal Health) 5.0mm x 14mm. We passed the middle marker of the balloon 2mm inside of the stent ostium (Video 3). The proximal Flash balloon was dilated twice to large diameter (Video 4). The resultant residual was minimal and there was excellent proximal flaring of the stent (Videos 5 and 6). Discussion. Renal artery stenting is still controversial; however, ...
Feasibility of renal artery stenting before, during, and after endovascular aneurysm repair with suprarenal fixation endograft.: Suprarenal fixation by means of
Left renal artery aka Arteria renalis sinistra in the latin terminology and part of arteries of the small intestine with focus on the superior mesenteric artery. Learn more now!
If patients could recognise themselves, or anyone else could recognise a patient from your description, please obtain the patients written consent to publication and send them to the editorial office before submitting your response [Patient consent forms] ...
This graph shows the total number of publications written about Renal Artery by people in this website by year, and whether Renal Artery was a major or minor topic of these publications ...
The left renal artery passes laterally from the abdominal aorta into the left kidney. It then divides into several smaller branches within the kidney tissues.
Renal angiography, the standard diagnostic procedure used to confirm the presence of renal artery stenosis before surgery or angioplasty, is associated with renal complications that include renal failure. Consequently, alternative but accurate screening procedures with minimal adverse effects have been sought. Captopril renal scans have shown promise toward achieving this goal (1). A recent prospective study showed that patients with captopril-induced changes during preoperative scintigraphy had marked improvement in blood pressure control after revascularization (2). Preoperative scintigraphy, however, is operator-dependent, resulting in greater sensitivity and specificity in some academic centers than in community hospitals. The study by Olin and colleagues shows that duplex ultrasound scanning can have a sensitivity and a specificity of , 95% for detecting renal arterial lesions. Although this is impressive, it should be noted that these data were derived from a group of persons with severe ...
Renal artery stenosis - is the narrowing of renal arteries that carry blood to the kidneys from the aorta.[2] ... "Renal Artery Stenosis". www.niddk.nih.gov. Retrieved 2015-06-23.. *^ a b "Vascular Diseases: MedlinePlus". www.nlm.nih.gov. ... Treatment varies with the type of vascular disease; in the case of renal artery disease, information from a meta-analysis ... Peripheral artery disease - happens when atheromatous plaques build up in the arteries that supply blood to the arms and legs, ...
femoral, renal and saphenous artery tonic contraction 5 μM[24] Chicken gizzard contraction 20 μM[24] ...
Specifically, a laparoscopic YV-infundibulo-pyeloplasty with vasculopexy of a posterior segmental renal artery was performed. ... Suarez, Henry (2016-11-21). "Renal Artery Doppler". Sonographic Tendencies. Retrieved 2019-12-13. ePainAssist, Team (2014-07-24 ... usually the renal artery, crosses over the superior infundibulum of the kidney (one or both), fluid begins to build up, causing ... when the renal artery obstructs the proximal collecting system, filling defects can occur anywhere in the calyces, pelvis, or ...
... , short for ex vivo renal artery reconstruction and autotransplantation, is a technique mainly used for ... Belzer, FO; Salvatierra, O; Palubinskas, A; Stoney, RJ (1975). "Ex vivo renal artery reconstruction". Ann. Surg. 182 (4): 456- ...
The legs, including the popliteal arteries.[10]. *The kidney, including renal artery aneurysm and intraparechymal aneurysms.[11 ... RenalEdit. Renal aneurysms are very rare consisting of only 0.1-0.09%[48] while rupture is even more rare.[48][49] Conservative ... Lumsden AB, Salam TA, Walton KG (1996). "Renal artery an?eurysm: a report of 28 cases". Cardiovasc Surg. 4 (2): 185-189. doi: ... 1997). "Kidney salvage in a case of ruptured renal artery aneurysm: case report and literature review". Cardiovasc Surg. 5 (1 ...
"Renal artery embolization for managing uncontrolled hypertension in a kidney transplant candidate". Avicenna J Med. 3 (1): 23-5 ... Micrograph of embolic material in the artery of a kidney. The kidney was surgically removed because of cancer. H&E stain. ... Particulate embolic agents - These are only used for precapillary arterioles or small arteries. These are also very good for ... However it does cause hemolysis and renal failure in large doses.. *sotradecol - This agent is used for superficial lower ...
Sajja LR; Sitaram Reddy B; Sahariah S; Vijay Kumar D. (June 2002). "Giant aneurysm of renal artery: surgical management". Asian ... The first ten renal transplants in the state of Assam are also credited to him, which he did during the period from 1992 to ... He has performed renal transplantations in rural areas, another first credited to him, performed at the rural hospital, ... He is credited with the first cadaver donor renal transplant in Hyderabad, beginning of a career where he would perform eight ...
Tobian L, Binion J (October 1954). "Artery wall electrolytes in renal and DCA hypertension". The Journal of Clinical ... Schacht RG, Lowenstein J, Baldwin DS (October 1971). "Renal mechanism for DOCA escape in man". Bulletin of the New York Academy ... Majima M, Hayashi I, Fujita T, Ito H, Nakajima S, Katori M (October 1999). "Facilitation of renal kallikrein-kinin system ... Pearce JW, Sonnenberg H, Veress AT, Ackermann U (April 1969). "Evidence for a humoral factor modifying the renal response to ...
Powers, TA; Lorenz, CH; Holburn, GE; Price, RR (1991). "Renal artery stenosis: in vivo perfusion MR imaging". Radiology. 178 (2 ... A limitation of BOLD fMRI is its spatial resolution, as flow increase in somewhat large arteries or veins feed or drain large ...
Ma, Y. H.; Harder, D. R.; Clark, J. E.; Roman, R. J. (1991). "Effects of 12-HETE on isolated dog renal arcuate arteries". The ... HETE constrict the renal artery of dogs and 12-HETE (stereoisomer undetermined) is implicated in the angiotensin II-induced ... This antagonistic activity was responsible for the ability of 12(S)-HETE and 12(R)-HETE to relax mouse mesenteric arteries pre- ... 12(S)-HETE and 12(S)-HpETE stimulate the dilation of rat mesenteric arteries; 12(S)-HETE stimulates the dilation of coronary ...
... renal artery stenosis) or during shock. Hypoperfusion can also be caused by embolism of the renal arteries. Given their ... Acute tubular necrosis is classified as a "renal" (i.e. not pre-renal or post-renal) cause of acute kidney injury. Diagnosis is ... Renal Papillary Necrosis. References[edit]. *^ a b c d "Acute Tubular Necrosis (ATN)". Nephrology Channel. HealthCommunities. ... Acute tubular necrosis (ATN) is a medical condition involving the death of tubular epithelial cells that form the renal tubules ...
However, the decrease may be significant in conditions of decreased renal perfusion, such as renal artery stenosis, heart ... as scleroderma renal crisis). In those with stable coronary artery disease, but no heart failure, benefits are similar to other ... A decrease renal protein kinase C. With ACE inhibitor use, the production of ATII is decreased, which prevents aldosterone ... Therefore, renal function should be closely monitored over the first few days after initiation of treatment with ACE inhibitor ...
Reduction in renal glomerular filtration rate may occur; people with renal artery stenosis may be at higher risk. Hyperkalemia ...
Kidney disease / renal artery stenosis - the normal physiological response to low blood pressure in the renal arteries is to ... it is thought that decreased perfusion of renal tissue due to stenosis of a main or branch renal artery activates the renin- ... Voiculescu A, Rump LC (January 2009). "[Hypertension in patients with renal artery stenosis]". Der Internist (in German). 50 (1 ... Malformed aorta, slow pulse, ischemia: these cause reduced blood flow to the renal arteries, with physiological responses as ...
The legs, including the popliteal arteries.[citation needed] The kidney, including renal artery aneurysm and intraparechymal ... Lumsden AB, Salam TA, Walton KG (1996). "Renal artery an?eurysm: a report of 28 cases". Cardiovasc Surg. 4 (2): 185-189. doi: ... Tham G, Ekelund L, Herrlin K, Lindstedt EL, Olin T, Bergentz SE (March 1983). "Renal artery aneurysms. Natural history and ... 1997). "Kidney salvage in a case of ruptured renal artery aneurysm: case report and literature review". Cardiovasc Surg. 5 (1 ...
The symptoms are caused by calcification of large and medium-sized arteries, including the aorta, coronary arteries, and renal ... main pulmonary artery, and coronary arteries unusually. Abdominal ultrasound can reveal hepatosplenomegaly, ascites, renal ... and renal arteries, as well as peritoneal calcifications involving the visceral peritoneum overlying the liver and intestine ... renal, mesenteric and cardiac arteries Echo-dense aortic annulus, ascending aorta, transverse arch, descending aorta, ...
... where bilateral renal artery stenosis causes flash pulmonary edema. Pickering received his Bachelor of Medicine, Bachelor of ... "Recurrent pulmonary oedema in hypertension due to bilateral renal artery stenosis: treatment by angioplasty or surgical ... "Flash pulmonary oedema and bilateral renal artery stenosis: the Pickering syndrome". European Heart Journal. 32 (18): 2231-5. ... and was on the Food and Drug Administration's Cardio Renal Advisory Board. Pickering served on the editorial boards of a number ...
Its ascension may also be restricted by its own renal artery. Additionally, during normal development, the kidneys undergo a 90 ... Furthermore, approximately 70% of kidneys in normal individuals are supplied by a single renal artery with the remaining 30% ... However, due to the renal fusion, this rotation is impaired resulting in abnormal placement of the ureters. This in turn can ... In patients with this condition, the horseshoe kidney ascent is commonly arrested by the inferior mesenteric artery due to the ...
Each renal artery branches into segmental arteries, dividing further into interlobar arteries, which penetrate the renal ... A recessed area on the concave border is the renal hilum, where the renal artery enters the kidney and the renal vein and ... "kidney artery", other experts have advocated preserving the use of renal as appropriate including in "renal artery". The ... At the hilum, the ureter and renal vein exit the kidney and the renal artery enters. Hilar fat and lymphatic tissue with lymph ...
The external iliac artery is usually the artery used to attach the renal artery to the recipient of a kidney transplant. Ilium ... Iliac artery, external - The external iliac arteries are two major arteries which bifurcate off the common iliac arteries ... They receive blood from the paired renal arteries; blood exits into the paired renal veins. Each kidney is attached to a ureter ... The kidneys have an extensive blood supply via the renal arteries which leave the kidneys via the renal vein. Each kidney ...
Bilateral renal artery stenosis should always be considered as a differential diagnosis for the presentation of HN. Kidney ... This leads to a build-up of plaques and they can be deposited in the renal arteries causing stenosis and ischemic kidney ... The large renal arteries exhibit intimal thickening, medial hypertrophy, duplication of the elastic layer. The changes in small ... "Renal Pathology". library.med.utah.edu. Retrieved 2016-11-12.. *^ "Malignant nephrosclerosis". Farlex medical dictionary, ...
Bilateral renal artery stenosis should always be considered as a differential diagnosis for the presentation of HN. Kidney ... The large renal arteries exhibit intimal thickening, medial hypertrophy, duplication of the elastic layer. The changes in small ... This leads to a build-up of plaques and they can be deposited in the renal arteries causing stenosis and ischemic kidney ... the kidney supplied blood by the narrowed renal artery suffers from inadequate blood flow, which in turn causes the size of the ...
Compression of the left renal vein (marked by the arrow) between the superior mesenteric artery (above) and the aorta (below) ... of the renal vein (superior mesenteric artery syndrome) as the cause of gastrointestinal complaints]". Dtsch. Med. Wochenschr ... Renal vein re-implantation. Gonadal vein embolization. Kurklinsky A, Rooke T (June 2010). "Nutcracker Phenomenon and Nutcracker ... This condition is not to be confused with superior mesenteric artery syndrome, which is the compression of the third portion of ...
... and may signify renal artery stenosis.[19] Prevention of recurrence is based on managing hypertension, coronary artery disease ... Recurrent pulmonary oedema in hypertension due to bilateral renal artery stenosis: treatment by angioplasty or surgical ... Blood tests are performed for electrolytes (sodium, potassium) and markers of renal function (creatinine, urea). Liver enzymes ... high central venous pressures and high pulmonary artery pressures. ...
... which can interfere with renal autoregulation and produce acute kidney failure in patients with bilateral renal artery stenosis ... Additionally, hypertensive encephalopathy may occur in pheochromocytoma, Cushing's syndrome, renal artery thrombosis.[citation ... See "Renal effects of ACE inhibitors in hypertension".)[citation needed]ref Several parenteral antihypertensive agents are most ... A change in medication, however, is indicated if the decline in renal function is temporally related to therapy with an ...
"Renal artery embolization for managing uncontrolled hypertension in a kidney transplant candidate". Avicenna J Med. 3 (1): 23-5 ... The position of the correct artery or vein supplying the pathology in question is located by digital subtraction angiography ( ... Particulate embolic agents - These are only used for precapillary arterioles or small arteries. These are also very good for ...
It is used to assist in the diagnosis of renal artery stenosis. It is not generally considered a useful test for children, and ... Subtraction angiography is considered a more suitable test for renal artery stenosis in adults. captopril suppression test used ...
Affected arteries develop endothelial dysfunction and impairment of normal vasodilation, which alter renal autoregulation. When ... and renal artery embolization in cases of anesthesia risk. It is also important that the blood pressure is lowered smoothly, ... In the kidneys, chronic hypertension has a great impact on the renal vasculature, leading to pathologic changes in the small ... During a hypertensive crisis, this can lead to acute renal ischemia, with hypoperfusion, involvement of other organs, and ...
Thrombosis usually occurs in the renal veins although it can also occur in arteries. Treatment is with oral anticoagulants (not ... In addition, myeloma light chains are also directly toxic on proximal renal tubules, further adding to renal dysfunction. ... Fundamentals of Renal Pathology. Springer. ISBN 978-0-387-31126-5. *^ a b "Nephrotic syndrome". Archived from the original on ... "Indicaciones de la biospsia renal en niños". Retrieved 2008-09-14.. *^ "Diagnóstico diferencial en el síndrome nefrótico". ...
Before reaching the branchial heart, each branch of the vena cava expands to form renal appendages which are in direct contact ... The blood vessels consist of arteries, capillaries and veins and are lined with a cellular endothelium which is quite unlike ... The Dicyemidae are a family of tiny worms that are found in the renal appendages of many species;[105] it is unclear whether ... and selective absorption from the renal appendages, as it is passed along the associated duct and through the nephridiopore ...
Renal artery stenosis. *Renal ischemia. *Hypertensive nephropathy. *Renovascular hypertension. *Renal cortical necrosis ... and the Renal Association represents renal physicians and works closely with the National Service Framework for kidney disease ... and the care of those requiring renal replacement therapy, including dialysis and renal transplant patients. Many diseases ... Renal transplantation replaces kidney function by inserting into the body a healthier kidney from an organ donor and inducing ...
Renal artery stenosis. *Renal ischemia. *Hypertensive nephropathy. *Renovascular hypertension. *Renal cortical necrosis ...
Ejerblad E, Fored CM, Lindblad P, Fryzek J, McLaughlin JK, Nyrén O. Obesity and risk for chronic renal failure. J. Am. Soc. ... Association of bodyweight with total mortality and with cardiovascular events in coronary artery disease: A systematic review ...
"Edinburgh Artery Study: prevalence of asymptomatic and symptomatic peripheral arterial disease in the general population". Int ... It is classically associated with early-stage peripheral artery disease, and can progress to critical limb ischemia unless ... Renal vein thrombosis. *upper limb / torso *Mondor's disease. *Paget-Schroetter disease. *head *Cerebral venous sinus ... testing is often performed to confirm the diagnosis of peripheral artery disease. ...
Renal artery stenosis. *Renal ischemia. *Hypertensive nephropathy. *Renovascular hypertension. *Renal cortical necrosis ... "Renal Pathology". Retrieved 2008-11-25.. *^ Obana M, Nakanishi K, Sako M, Yata N, Nozu K, Tanaka R, Iijima K, Yoshikawa N (July ... "Renal Pathology". Retrieved 2008-11-25.. *^ Ziakas PD, Giannouli S, Psimenou E, Nakopoulou L, Voulgarelis M (July 2004). " ...
Acute renal failure. Acute respiratory distress syndrome. Acute liver failure. Respiratory failure. Multiple organ dysfunction ...
... of the carotid arteries. These arteries are the large blood vessels in your neck that feed your brain. Transcranial Doppler ( ... Glioblastomas are the most common primary malignancies to hemorrhage while thyroid, renal cell carcinoma, melanoma, and lung ...
... including renal, mesenteric, and coronary arteries.[8] to cause a reduction in systemic vascular resistance. Fenoldopam has a ... The renal effect of fenoldopam and dopamine may involve physiological antagonism of the renin-angiotensin system in the kidney. ... Hughes AD, Sever PS (1989). "Action of fenoldopam, a selective dopamine (DA1) receptor agonist, on isolated human arteries". ... Since fenoldopam is the only intravenous agent that improves renal perfusion, in theory it could be beneficial in hypertensive ...
This 'Grow Your Own Arteries' technique is helping patients survive coronary heart disease, renal failure and other life- ... thickening in arteries subjected to injury, rather than solely from cells of the artery wall. This showed that current ... Grow Your Own Arteries' Campbell, Julie. St. George Girls High School, An Academically Selective High School for girls. Notable ... She has other research that involves basic cellular interactions in the artery wall, and the definition of single transduction ...
Renal artery stenosis. *Renal ischemia. *Hypertensive nephropathy. *Renovascular hypertension. *Renal cortical necrosis ... Some, such as the American Academy of Pediatrics recommends renal ultrasound and voiding cystourethrogram (watching a person's ...
Inferior suprarenal artery. Vein. suprarenal veins. Nerve. celiac plexus, renal plexus. ... Artery. superior suprarenal artery, middle suprarenal artery, ...
... coronary artery disease, heart arrhythmia and peripheral artery disease. Radiation-induced fibrosis, vascular cell damage and ... Renal cell cancer and melanoma are generally considered to be radioresistant but radiation therapy is still a palliative option ... These treatments begin by guiding a catheter up through the femoral artery in the leg, navigating to the desired target site ... Another example is the injection of yttrium-90 radioactive glass or resin microspheres into the hepatic artery to radioembolize ...
Bilateral renal agenesis[edit]. Main article: Renal agenesis. Bilateral renal agenesis has been estimated to occur at a ... and a single umbilical artery. Presence of a diaphragmatic hernia is also common in these fetuses/infants. Additionally, the ... It can be caused by renal diseases such as bilateral renal agenesis (BRA), atresia of the ureter or urethra causing obstruction ... Buchta RM, Viseskul C, Gilbert EF, Sarto GE, Opitz JM (August 1973). "Familial bilateral renal agenesis and hereditary renal ...
2007). "Donepezil for cognitive decline following coronary artery bypass surgery: a pilot randomized controlled trial". ... and the 5-mg dose can be given safely to patients with mild-to-moderate hepatic and renal-disease.. ... coronary artery bypass surgery cognitive impairment,[32] cognitive impairment associated with multiple sclerosis, CADASIL ...
The morphology for heat exchange occurs via cerebral arteries and the ophthalmic rete, a network of arteries originating from ... Though there have been no official detailed renal studies conducted[77] on the flow rate (Poiseuille's Law) and composition of ... The interatrial artery of the ostrich is small in size and exclusively supplies blood to only part of the left auricle and ... The coronary arteries start in the right and left aortic sinus and provide blood to the heart muscle in a similar fashion to ...
Ejerblad E, Fored CM, Lindblad P, Fryzek J, McLaughlin JK, Nyrén O (2006). "Obesity and risk for chronic renal failure". J. Am ... 2006). "Association of bodyweight with total mortality and with cardiovascular events in coronary artery disease: A systematic ...
Renal artery stenosis. *Renal ischemia. *Hypertensive nephropathy. *Renovascular hypertension. *Renal cortical necrosis ... there was a lower chance of reaching end-stage renal disease (renal function so poor that dialysis was required) in the steroid ... Other renal causes of isolated hematuria include thin basement membrane disease and Alport syndrome, the latter being a ... From the fact that IgAN can recur after renal transplant, it can be postulated that the disease is caused by a problem in the ...
Acute renal failure. Acute respiratory distress syndrome. Acute liver failure. Respiratory failure. Multiple organ dysfunction ... Therefore, no dose adjustment is needed in elderly patients, or in patients with renal or hepatic dysfunction. ...
As a result, birds have more blood in their capillaries per unit of volume of lung than a mammal.[83] The arteries are composed ... The postcava receives blood from the limbs via the renal portal system. Unlike in mammals, the circulating red blood cells in ... Veins, unlike arteries, are thin and rigid as they do not need to withstand extreme pressure. As blood travels through the ... In birds, the main arteries taking blood away from the heart originate from the right aortic arch (or pharyngeal arch), unlike ...
The brain can regulate blood flow over a range of blood pressure values by vasoconstriction and vasodilation of the arteries.[ ... Renal compensation can help the bicarbonate buffer system. The sensor for the plasma bicarbonate concentration is not known for ... Here it causes the reabsorption of sodium ions from the renal tubular fluid, in exchange for potassium ions which are secreted ... It is very probable that the renal tubular cells of the distal convoluted tubules are themselves sensitive to the pH of the ...
... but calcium supplements are associated with a higher risk of coronary artery calcification.[8] ... "Calcium intake from diet and supplements and the risk of coronary artery calcification and its progression among older adults ...
Padmanaban, P.; Toora, B. (2011). "Hemoglobin: Emerging marker in stable coronary artery disease". Chronicles of Young ... and the circulating hemoglobin can cause renal failure. ... shows its importance in coronary artery disease.[83] ...
Acute pancreatitis can trigger a build-up of fluid, particularly in abdominal and thoracic (chest) areas, acute renal failure, ... and cause inflammation in arteries and veins. The inflammation triggers the body's clotting factors, possibly depleting them to ...
High blood pressure, valvular heart disease, coronary artery disease, cardiomyopathy, congenital heart disease, COPD, obesity, ... "Atrial fibrillation and risks of cardiovascular disease, renal disease, and death: systematic review and meta-analysis" (PDF) ... An embolus proceeds through smaller and smaller arteries until it plugs one of them and prevents blood from flowing through the ... Cardiovascular factors known to be associated with the development of AF include high blood pressure, coronary artery disease, ...
However, the left ovary drains from the plexus to the left ovarian vein, and from there drains to the left renal vein before ... It acts as a countercurrent heat exchanger, cooling blood in adjacent arteries. An abnormal enlargement of the pampiniform ... and on the left side into the left renal vein, at a right angle.The pampiniform plexus forms the chief mass of the cord. ...
Median sacral artery. Visceral branches:. Celiac trunk. Middle suprarenal arteries. Superior mesenteric artery. Renal arteries ... renal and middle suprarenal arteries, and visceral arteries (the celiac trunk, the superior mesenteric artery and the inferior ... Gonadal arteries testicular in males, ovarian in females. Inferior mesenteric artery. Terminal branches: Common iliac arteries ... Left subclavian artery. Descending aorta, thoracic part: Left bronchial arteries. esophageal arteries to the thoracic part of ...
Renal artery stenosis, or narrowing of one or both renal arteries will lead to hypertension as the affected kidneys release ... It is located above the renal vein. Supernumerary renal arteries (two or more arteries to a single kidney) are the most common ... the right renal artery is normally longer than the left renal artery.[5][6] ... "Correlation between the diameter of the main renal artery and the presence of an accessory renal artery: sonographic and ...
Renal Artery Superior Mesenteric Artery Renovascular Hypertension Left Renal Artery Vessel Loop These keywords were added by ... Bianchi C., Ballard J.L. (2006) Transaortic Renal Artery Endarterectomy. In: Hoballah J.J., Scott-Conner C.E.H. (eds) Operative ...
The left renal artery passes laterally from the abdominal aorta into the left kidney. It then divides into several smaller ... Home > Cardiovascular System > Cardiovascular System of the Lower Torso > Blood Supply to the Kidneys > Left Renal Artery ... The left renal artery passes laterally from the abdominal aorta into the left kidney. It then divides into several smaller ... Left Renal Artery * Left Renal Vein * Left Suprarenal Arteries * Left Suprarenal Vein ...
Renal artery stenosis symptoms include high blood pressure that does not respond to treatment, or severe high blood pressure. ... Renal artery stenosis causes include high cholesterol, high blood pressure, smoking, and diabetes. ... Renal artery stenosis is a narrowing of the diameter of the renal arteries. When the renal arteries narrow, the result is ... Picture of Renal Artery Stenosis. Narrowing of the major artery that supplies blood to the kidney. See a picture of the Renal ...
Renal artery stenosis symptoms include high blood pressure that does not respond to treatment, or severe high blood pressure. ... Learn about renal artery stenosis causes like high cholesterol, high blood pressure, smoking, and diabetes. ... home / high blood pressure health center / high blood pressure a-z list / renal artery stenosis center / renal artery stenosis ... Renal artery stenosis (narrowing) is a decrease in the diameter of the renal arteries. The resulting restriction of blood flow ...
Renal Artery Stenosis News and Research. RSS The term renal artery stenosis (RAS) applies to a cluster of disease conditions ... Renal Stent System for the treatment of renal artery stenosis (narrowing of the main arteries supplying blood to the kidneys) ... for its new balloon expandable stent for renal artery disease. Intended for patients suffering from renal artery stenosis, a ... FDA approves Abbotts RX Herculink Elite Renal Stent System for renal artery stenosis Abbott today announced it has received U. ...
Learn about treatment options for diseases of arteries supplying blood to the intestines and kidneys, including open surgical ( ... Renal Artery Disease Treatments Renal artery stenosis is the narrowing of one or both renal arteries. "Renal" means "kidney" ... Such as angioplasty (the opening of a renal artery using a balloon or other method) or placement of a stent (a tiny expandable ... The renal arteries are blood vessels that carry blood to the kidneys from the aorta-the main blood vessel that carries blood ...
... of the renal artery has become an increasingly widespread peripheral vascular intervention for the treatment of renovascular ... Bax et al found that in patients with atherosclerotic renal artery stenosis, renal artery stenting had no clear effect on renal ... encoded search term (Renal Artery Angioplasty) and Renal Artery Angioplasty What to Read Next on Medscape. Related Conditions ... The utility of duplex ultrasound scanning of the renal arteries for diagnosing significant renal artery stenosis. Ann Intern ...
Renal artery definition at Dictionary.com, a free online dictionary with pronunciation, synonyms and translation. Look it up ... renal artery, renal carcinosarcoma, renal cast, renal clearance, renal column, renal corpuscle ... renal artery. renaissance man, renaissance revival, renaissance woman, renaissant, renal, ... An artery with its origin in the aorta and with distribution to the kidney. ...
Transluminal dilatation of transplant renal artery stenosis. Br Med J 1980; 281 :196 ... Transluminal dilatation of transplant renal artery stenosis.. Br Med J 1980; 281 doi: https://doi.org/10.1136/bmj.281.6234.196 ...
Reversible renal failure with renal artery occlusion. Br Med J 1972; 2 :27 ... Reversible renal failure with renal artery occlusion.. Br Med J 1972; 2 doi: https://doi.org/10.1136/bmj.2.5804.27 (Published ...
Renal artery stenosis symptoms include high blood pressure that does not respond to treatment, or severe high blood pressure. ... Learn about renal artery stenosis causes like high cholesterol, high blood pressure, smoking, and diabetes. ... Renal artery stenosis (narrowing) is a decrease in the diameter of the renal arteries. The resulting restriction of blood flow ... If renal artery stenosis is also present, then a bypass renal artery surgery may be done at the same time. ...
The first published report of a renal artery aneurysm (RAA) was in 1770 by Rouppe, who described the demise of a sailor who ... A renal artery aneurysm (RAA) is defined as a dilated segment of renal artery that exceeds twice the diameter of a normal renal ... A great deal of variety can be found in the anatomy of the renal artery and its branches, but most often the main renal artery ... encoded search term (Renal Artery Aneurysm) and Renal Artery Aneurysm What to Read Next on Medscape ...
The renal artery is one of these two blood vessels. The renal artery enters through the hilum, which is located where the ... Receptors located in the smooth muscle wall of the renal artery allow the arteries to expand or contract to compensate for high ... The renal artery enters through the hilum, which is located where the kidney curves inward in a concave shape. Under normal ... Renal artery. Medically reviewed by Healthlines Medical Network on. December 12, 2014. ...
Renal artery stenosis is a narrowing of the arteries that supply blood to the kidneys. Learn what causes RAS, and how to treat ... Renal artery stenosis (RAS) is a condition in which the arteries that supply blood to the kidneys narrow. The renal arteries ... Complications of renal artery stenosis. Decreased blood flow through your renal arteries can increase your overall blood ... in the renal arteries. These substances harden as they accumulate in the arterial walls. This not only narrows the arteries, ...
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... and medical therapy alone for adults with atherosclerotic renal artery stenosis (ARAS), according to findings of an updated ... There is insufficient evidence to choose between percutaneous transluminal renal angioplasty with stent placement (PTRAS) ... Cite this: Insufficient Evidence to Choose Best Management of Renal Artery Stenosis - Medscape - Aug 17, 2016. ... and medical therapy alone for adults with atherosclerotic renal artery stenosis (ARAS), according to findings of an updated ...
... treatment of narrowing of the arteries leading to the kidneys. ... Renal artery stenosis. Sectionsfor Renal artery stenosis. * ... Renal artery stenosis - Comprehensive overview covers causes, diagnosis, ... Renal artery bypass surgery. During a bypass procedure, doctors graft a substitute blood vessel to the renal artery to make a ... Renal arteriography. This special type of X-ray exam helps your doctor find the blockage in the renal arteries and sometimes ...
Renal Artery Digital Subtraction Angiography Renal Artery Stenosis Renovascular Hypertension Left Renal Artery ... 1996) Value of Doppler parameters in the diagnosis of renal artery stenosis. J Vasc Surg 23:428-435PubMedGoogle Scholar ... 2003) Aortoiliac and renal arteries: prospective intraindividual comparison of contrast-enhanced 3D MR angiography and multi- ... 1995) Technical optimization of spiral CT for depiction of renal artery stenosis: in vitro analysis. Radiology 194:157-163 ...
Renal artery dissection can be acute or chronic. Acute renal artery dissection is divided into three types: iatrogenic (guide ... However, full length of main renal artery could not be seen due to obesity and bowel gas. Origin of right renal artery was seen ... Chronic renal artery dissection is classified as functional and silent [2]. Spontaneous renal artery dissection (SRAD) is a ... Spontaneous renal artery dissection is a rare but important cause of flank pain. We report a case of isolated spontaneous renal ...
Renal artery stenting conferred no added benefit to medical management for the treatment of patients with atherosclerotic ... Renal artery angioplasty has been suggested to reduce hypertension, a common complication of renal artery stenosis, in several ... Renal artery stenosis often occurs in combination with peripheral arterial or coronary artery disease, and its prevalence among ... "Renal artery stenting remains a common procedure in current clinical practice," Christopher J. Cooper, MD, of the University of ...
... stents had no clear effect on the progression of impaired renal function, European researchers said. ... TORONTO -- In patients with narrowing of the renal artery, ... with atherosclerotic renal artery stenosis and impaired renal ... In patients with narrowing of the renal artery, stents had no clear effect on the progression of impaired renal function, ... Explain to interested patients that narrowing of the renal artery is often treated with a stent, although there is little ...
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Renal artery disease Renal artery disease is usually caused by atherosclerosis, hardening of the arteries due to the build up ... Renal artery disease can also be caused by fibromuscular dysplasia (FMD), a condition usually found in young women between the ... FMD results in the overgrowth of tissue inside the artery in a characteristic "chain of beads" pattern. This condition can ... of fatty deposits or plaques along the artery wall. This build-up can reduce blood-flow to one or both kidneys, or block flow ...
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... blocked or hardened arteries caused by plaque buildup. ... Renal artery intervention at Loyola Medicine offers several ... Renal artery stenosis - Also called renovascular hypertension, occurs when an artery in the kidney narrows. Renal artery ... renal artery angioplasty with stenting is the preferred treatment for renal artery disease. But, in certain cases, renal ... If both renal arteries are blocked, kidney failure occurs.. If you have plaque buildup in the renal arteries, you will also ...
John A. Stathopoulos, "Modification of the No-Touch Technique during Renal Artery Stenting," Case Reports in Vascular Medicine ... Modification of the No-Touch Technique during Renal Artery Stenting. John A. Stathopoulos ...
Renal artery stenosis is a narrowing of the arteries that supply blood to the kidneys.. More about Renal Artery Disease ... In renal artery stenosis (RAS), blood flow is decreased because of a narrowing of the renal artery. The lower blood flow is ... The renal arteries carry blood to the kidneys. If blood flow is decreased or flowing at a lower pressure, the kidneys interpret ... The renal arteries typically narrow from one of two causes: *development of plaque, or atherosclerosis, in the vessel ...
A renal artery aneurysm is a weak area in the artery that goes to the kidney. Although a renal artery aneurysm usually doesnt ... A renal artery aneurysm is a weak area in the artery that goes to the kidney. The majority of renal artery aneurysms are small ... Treatment for a renal artery aneurysm involves surgery. Of the aneurysms that affect the renal arteries, there are four ... A dissecting renal artery aneurysm is often painful. It is caused by a tear in the inner layer of the artery, resulting in a ...
Seventy consecutive operations involving the renal arteries were reviewed to identify factors linked to perioperative mortality ... Stratification of mortality risk for renal artery surgery Am Surg. 1995 Jan;61(1):45-51. ... Higher mortality was also observed after bilateral renal artery operations (31% vs 5%; P , 0.005) or concomitant mesenteric ... Seventy consecutive operations involving the renal arteries were reviewed to identify factors linked to perioperative mortality ...
  • Non-contrast MR angiography provides clear, high-quality images and can be used as an effective tool for diagnosing renal artery stenosis. (news-medical.net)
  • Describe the advantages and disadvantages of this technique for diagnosing renal artery stenosis. (oncologynurseadvisor.com)
  • V. Describe the advantages and disadvantages of the alternative techniques for diagnosing renal artery stenosis. (oncologynurseadvisor.com)
  • Less common causes of renal artery stenosis are rare conditions such as fibromuscular dysplasia of the vessels (narrowing of the vessel due to internal thickening of the blood vessel wall), arteritis (inflammation of the blood vessel), or dissection (tearing and division of the blood vessel wall). (medicinenet.com)
  • In younger patients, the narrowing of the renal artery usually is due to the thickening of the artery (fibromuscular dysplasia) and it is more common in women than men. (medicinenet.com)
  • In fibromuscular dysplasia, the muscle in the artery wall grows abnormally, often from childhood. (mayoclinic.org)
  • Narrowed kidney arteries and fibromuscular dysplasia can affect other arteries in your body as well as your kidney arteries and cause complications. (mayoclinic.org)
  • Harrison EG Jr, Hunt JC, Bernatz PE (1967) Morphology of fibromuscular dysplasia of the renal arteryin renovascular hypertension. (springer.com)
  • Renal artery disease can also be caused by fibromuscular dysplasia (FMD), a condition usually found in young women between the ages of 20 and 40. (ucdavis.edu)
  • The balance is generally caused by fibromuscular dysplasia, a congenital disorder that causes thickening of the artery walls without plaque build-up.The kidneys play an important role in regulating blood pressure by secreting a hormone called renin. (clevelandclinic.org)
  • Fibromuscular dysplasia-An inherited disorder where muscle and fibrous tissue of the renal artery wall thicken and harden into rings that block blood flow to the kidneys. (medicalcityhospital.com)
  • Anyone have similar experiences with renal artery stenosis or renovascular hypertension, can be due to atherosclerosis or fibromuscular dysplasia(FMD). (healingwell.com)
  • Young patients with fibromuscular dysplasia in the proximal renal artery often respond to balloon dilatation. (edren.org)
  • The two most common etiologies are fibromuscular dysplasia and atherosclerotic renal artery disease with atherosclerotic disease accounting for the vast majority of cases. (dovepress.com)
  • In fibromuscular dysplasia an abnormality of the artery causes progressive narrowing of the renal artery during growth. (edren.org)
  • The second most common cause of renal artery disease is fibromuscular dysplasia(FMD), a genetic disease that makes cells in the artery walls grow abnormally, reducing blood flow. (simstat.com)
  • Renal artery disease can also develop as a result of fibromuscular dysplasia (FMD). (nyp.org)
  • Renal artery stenosis (RAS) is the narrowing of one or both of the renal arteries, most often caused by atherosclerosis or fibromuscular dysplasia. (wikipedia.org)
  • Angioplasty with or without stenting is the best option for the treatment of renal artery stenosis due to fibromuscular dysplasia. (wikipedia.org)
  • As opposed to ARAS, fibromuscular dysplasia usually affects the distal two-thirds of the main renal artery with a characteristic beaded angiographic appearance. (onlinejacc.org)
  • Cerebral angiography showed irregularities of the V3 segment of the left vertebral artery compatible with fibromuscular dysplasia. (ahajournals.org)
  • Angiography showed extensive signs of fibromuscular dysplasia involving carotid, vertebral, renal, iliac, and mesenteric arteries as well as a dissection of the left renal artery. (ahajournals.org)
  • 1. Percutaneous transluminal dilatation was performed in 37 patients with renovascular hypertension: 24 had atherosclerotic renal artery stenosis and 13 had fibromuscular dysplasia. (portlandpress.com)
  • NEW YORK (Reuters Health) - There is insufficient evidence to choose between percutaneous transluminal renal angioplasty with stent placement (PTRAS) and medical therapy alone for adults with atherosclerotic renal artery stenosis (ARAS), according to findings of an updated systematic review. (medscape.com)
  • Renal artery stenting conferred no added benefit to medical management for the treatment of patients with atherosclerotic renovascular disease in a large, randomized clinical trial. (medpagetoday.com)
  • Findings from the Cardiovascular Outcomes in Renal Atherosclerotic Lesions ( CORAL ) trial confirmed that stenting with aggressive hypertension and lipid lowering drug treatment was no better than drug treatment alone for preventing death from cardiovascular or renal causes or preventing complications such as heart attack, stroke, or progression of renal failure. (medpagetoday.com)
  • From this result, it is clear that medical therapy without stenting is the preferred management strategy for the majority of people with atherosclerotic renal artery stenosis. (medpagetoday.com)
  • The trial included 947 patients with atherosclerotic renal artery stenosis and either systolic hypertension while taking two or more antihypertensive drugs or chronic kidney disease. (medpagetoday.com)
  • The findings favor conservative medical management of patients with atherosclerotic renal artery stenosis, focusing on cardiovascular risk factors and avoiding stenting, Dr. Bax and colleagues said in the June 16 issue of Annals of Internal Medicine . (medpagetoday.com)
  • To help fill the gap, they enrolled 140 patients with atherosclerotic renal artery stenosis at 10 centers in Europe and randomized them to get medical treatment with antihypertensives, statins, and aspirin, or a stent as well as medical therapy. (medpagetoday.com)
  • The combination of inconclusive efficacy results and a suite of serious complications suggests that stenting for atherosclerotic renal artery stenosis may cause more harm than benefit in a community setting, Dr. Bax and colleagues said. (medpagetoday.com)
  • Atherosclerotic renovascular disease (ARVD) - Plaque develops on the inside of the main arteries to the kidneys. (loyolamedicine.org)
  • Atherosclerotic renal artery disease is the most common form of this condition, accounting for more than 80 percent of all renal artery disease. (clevelandclinic.org)
  • In atherosclerotic RAS there is a poor correlation between the severity of the renal artery lesion and the renal function on that side. (edren.org)
  • The treatment of bilateral atherosclerotic renal artery stenosis (or stenosis of a solitary functioning kidney) will be reviewed here. (uptodate.com)
  • Clinical clues suggesting the presence of renovascular hypertension and establishing the diagnosis of renal artery stenosis, treatment of unilateral atherosclerotic renal artery stenosis, issues related to chronic kidney disease associated with atherosclerotic renovascular disease, and diagnosis and treatment of fibromuscular disease are presented in detail elsewhere. (uptodate.com)
  • See 'Evaluation of secondary hypertension' and 'Establishing the diagnosis of renovascular hypertension' and 'Treatment of unilateral atherosclerotic renal artery stenosis' and 'Clinical manifestations and diagnosis of chronic kidney disease resulting from atherosclerotic renal artery stenosis' and 'Clinical manifestations and diagnosis of fibromuscular dysplasia' and 'Treatment of fibromuscular dysplasia of the renal arteries' . (uptodate.com)
  • The presence and severity of these vascular changes positively correlated with both atherosclerotic risk factors, such as hypertension, dyslipidaemia and renal insufficiency, and cardiovascular morbidity, including abdominal aortic aneurysm and myocardial infarction. (nih.gov)
  • Although the treatment of atherosclerotic renal artery stenosis with percutaneous angioplasty, stenting, and surgical revascularization has gained widespread use, few prospective randomized controlled trials (RCTs) exist that compare these techniques with each other or against the standard of medical management alone. (ahajournals.org)
  • Atherosclerotic renal artery stenosis (ARAS) is associated with progressive loss of renal function and is one of the most important causes of renal failure in the elderly. (clinicaltrials.gov)
  • Ostial ARAS is defined as a luminal reduction of ≥50% of the renal artery within 1 cm of the aortic wall, in the presence of atherosclerotic changes of the aorta. (clinicaltrials.gov)
  • Ischemic nephropathy due to atherosclerotic renal artery stenosis (ARAS) is associated with poor event free survival. (ahajournals.org)
  • The Cardiovascular Outcomes in Renal Atherosclerotic Lesions (CORAL) clinical trial is a prospective trial of individuals with atherosclerotic renal-artery stenosis. (ahajournals.org)
  • Stenosis severity is strongly related to kidney function at the time of presentation in patients with atherosclerotic renal artery stenosis. (ahajournals.org)
  • The CORAL (Cardiovascular Outcomes in Renal Atherosclerotic Lesions) study, which was the first randomized, controlled study to look at this issue, involved 947 participants at more than 100 sites in the U.S., Canada, South American, Europe, Australia and New Zealand. (medindia.net)
  • The participants all had atherosclerotic renal-artery stenosis and either systolic hypertension on two or more drugs or chronic kidney disease. (medindia.net)
  • Renal artery stenosis is a common finding in patients with atherosclerotic vascular disease ( 1 ). (onlinejacc.org)
  • Among patients with renal artery stenosis, more than 90% are atherosclerotic in nature, which typically involves the ostium and the proximal portion of the main renal artery with plaque extending into the peri-renal aorta ( 1 ). (onlinejacc.org)
  • The prevalence of atherosclerotic renal artery stenosis (ARAS) increases with age, presence of diabetes, peripheral arterial disease, coronary artery disease, hypertension, and dyslipidemia. (onlinejacc.org)
  • 5. Follow-up angiography performed at month 6 showed recurrence of slight renal artery stenosis in five out of 19 patients (all atherosclerotic). (portlandpress.com)
  • The Cardiovascular Outcomes in Renal Atherosclerotic Lesions study, known as CORAL, studied 947 patients whose plaque build-up in the renal artery narrowed the blood vessel by 60 percent or more. (healthcanal.com)
  • Treatment options for atherosclerotic renal artery stenosis (ARAS) include medical therapy alone or renal artery revascularization with continued medical therapy, most commonly by percutaneous transluminal renal angioplasty with stent placement (PTRAS). (ahrq.gov)
  • Does the use of renal artery stenting combined with aggressive medical therapy improve outcomes in patients with severe atherosclerotic renal artery stenosis? (aafp.org)
  • In patients with severe atherosclerotic renal artery stenosis and hypertension or chronic kidney disease, renal artery stenting does not provide an additional benefit when added to comprehensive medical therapy that includes blood pressure and diabetes mellitus management, and antiplatelet and lipid therapies. (aafp.org)
  • These investigators enrolled 947 patients with severe atherosclerotic renal artery stenosis (60% stenosis or more). (aafp.org)
  • Stenting and medical therapy for atherosclerotic renal-artery stenosis. (aafp.org)
  • Although expert consensuses recommend the use of statins in the treatment of atherosclerotic renal artery stenosis, in patients with severe atherosclerotic renal artery stenosis undergoing stent placement, the related investigation focused on renal protection by intensive lipid-lowering therapy is scant , and the optimal target level for lipid reduction remain uncertain. (clinicaltrials.gov)
  • Renal artery stenosis , or narrowing of one or both renal arteries will lead to hypertension as the affected kidneys release renin to increase blood pressure to preserve perfusion to the kidneys. (wikipedia.org)
  • When the renal arteries narrow, the result is restricted blood flow to the kidneys, which may lead to impaired kidney function and high blood pressure (referred to as renovascular hypertension (RVHT). (medicinenet.com)
  • The resulting restriction of blood flow to the kidneys may lead to impaired kidney function (renal failure) and high blood pressure ( hypertension ), referred to as renovascular hypertension , or RVHT ("reno" for kidney and "vascular" for blood vessel). (medicinenet.com)
  • Renovascular hypertension is as likely to occur with bilateral stenosis (when arteries to both kidneys are narrowed) as with unilateral stenosis (when the artery to one kidney is narrowed). (medicinenet.com)
  • Most cases of renal failure are related to diabetes , hypertension, glomerular sclerosis, contrast nephropathy , drug toxicity and other causes. (medicinenet.com)
  • Patients with uncontrolled renovascular hypertension saw a significant improvement in their blood pressure with renal artery stent deployment. (news-medical.net)
  • Abbott today announced it has received U.S. Food and Drug Administration (FDA) approval for the RX Herculink Elite® Renal Stent System for the treatment of renal artery stenosis (narrowing of the main arteries supplying blood to the kidneys) in patients with uncontrolled hypertension (high blood pressure). (news-medical.net)
  • Percutaneous transluminal angioplasty (PTA) of the renal artery has become an increasingly widespread peripheral vascular intervention for the treatment of renovascular hypertension (HTN). (medscape.com)
  • Renal artery stenosis in patient with medically refractory renovascular hypertension. (medscape.com)
  • Decreased blood flow through your renal arteries can increase your overall blood pressure, leading to hypertension. (healthline.com)
  • National High Blood Pressure Educational Programme Working Group (1996) Update of working group reports on chronic renal failure and renovascular hypertension. (springer.com)
  • 2001) Diagnostic tests for renal artery stenosis in patients suspected of having renovascular hypertension: a meta analysis. (springer.com)
  • Spontaneous renal artery dissection (SRAD) is a rare and serious event that can result in renal parenchymal injury and severe hypertension. (hindawi.com)
  • Renal artery angioplasty has been suggested to reduce hypertension, a common complication of renal artery stenosis, in several uncontrolled trials, but this benefit was not seen in several randomized studies, the researchers reported. (medpagetoday.com)
  • Renal artery stenosis - Also called renovascular hypertension, occurs when an artery in the kidney narrows. (loyolamedicine.org)
  • Renal artery stenosis can worsen over time and often leads to hypertension and kidney damage. (loyolamedicine.org)
  • About 90 percent of individuals with renal artery aneurysms are hypertensive, however hypertension is common in the general population as well. (wisegeek.com)
  • Individuals most at risk for developing renal problems, including aneurysm, are women, individuals with existing hypertension, diabetes , and those who smoke. (wisegeek.com)
  • Renal stenosis after sympathetic denervation of the renal arteries in hypertensive patients is a very unusual complication, but it sometimes appears together with hypertension recurrence. (ahajournals.org)
  • Doppler examination of the renal arteries was arranged because of poorly controlled hypertension. (bmj.com)
  • The high rate of coincident hypertension has led to the hypothesis that renal ischemia caused by turbulence, segmental compression, or dis?tal microemboli may be the underlying etiology for raised blood pressure. (hcplive.com)
  • ACE inhibitors should not be used if hypertension is caused by renal artery stenosis of both kidneys. (medicalcityhospital.com)
  • Renal artery stenosis is an unusual cause of hypertension, but an important one because it is curable. (medicalcityhospital.com)
  • We present a 63 year old healthy man with hypertension, who was evaluated for hematuria, at which time a 2.8 cm renal artery aneurysm (RAA) was identified by CT angiography. (sages.org)
  • Renal artery stenosis (RAS) may cause an ischaemic nephropathy, potentially leading to acute or chronic renal failure, or secondary hypertension. (edren.org)
  • A classic but rare presentation is with recurrent episodes of sudden (‘flash’) pulmonary oedema associated with hypertension and with reasonably good cardiac function and good or only moderately impaired renal function. (edren.org)
  • Renal artery stenosis is a relatively common finding in older patients with hypertension. (uptodate.com)
  • However, renal artery stenosis is the primary cause of hypertension (ie, renovascular hypertension) only in certain settings. (uptodate.com)
  • Development of hypertension from unilateral renal artery stenosis in conscious dogs. (ahajournals.org)
  • The severity of renal histopathological findings in patients who underwent nephrectomy for resistant hypertension correlated with an increased prevalence of cardiovascular disease, a greater degree of renal dysfunction and more severe dyslipidaemia. (nih.gov)
  • The use of revascularization techniques for the management of renal artery stenosis in patients with hypertension, renal insufficiency, pulmonary edema, and unstable angina has become increasingly prevalent. (ahajournals.org)
  • Renal artery denervation is a new minimally invasive radiological procedure for the treatment of hypertension (high blood pressure) which is resistant to combination drug therapy. (bmihealthcare.co.uk)
  • Hypertension caused by renal artery stenosis is usually hard to control in spite of two or more anti-hypertension drugs. (bioportfolio.com)
  • Atherosclerosis and hypertension can also damage the kidney parenchyma causing renal failure. (clinicaltrials.gov)
  • 1. In 13 patients with hypertension and renal artery stenosis the stenosis was dilated by an intra-arterial balloon catheter under local anaesthesia. (clinsci.org)
  • 6. Dilatation of renal artery stenosis by an intra-arterial balloon catheter is a promising treatment for patients with hypertension and renal artery stenosis. (clinsci.org)
  • The use of stenting to treat patients with renal artery stenosis is a treatment that clinicians have disagreed on for some time," said Dworkin, director of the Division of Hypertension & Kidney Disease at Rhode Island Hospital and a physician with University Medicine Foundation. (medindia.net)
  • Fitting a renal artery stent in uncontrolled renovascular hypertension patients could lead to a significant improvement of their blood pressure levels. (medindia.net)
  • This narrowing of the renal artery can impede blood flow to the target kidney, resulting in renovascular hypertension - a secondary type of high blood pressure. (wikipedia.org)
  • Among the diagnostic techniques are: Doppler ultrasound study of the kidneys Refractory hypertension Auscultation (with stethoscope) - bruit ("rushing" sound) Captopril challenge test Captopril test dose effect on the differential renal function as measured by MAG3 scan. (wikipedia.org)
  • 1.1 Current evidence on percutaneous transluminal radiofrequency sympathetic denervation of the renal artery for resistant hypertension is from limited numbers of patients, but there is evidence of efficacy in the short and medium term. (nice.org.uk)
  • 1.2 Clinicians wishing to undertake percutaneous transluminal radiofrequency sympathetic denervation of the renal artery for resistant hypertension should take the following actions. (nice.org.uk)
  • 1.3 Patient selection should be carried out by a multidisciplinary team including a physician with expertise in hypertension and a specialist in endovascular interventions, giving consideration to the number of antihypertensive drugs that have failed to control the patient's blood pressure and the anatomical suitability of their renal arteries. (nice.org.uk)
  • Curable hypertension of renal vascular origin is a disease that continues to present difficulties in diagnosis. (annals.org)
  • The principal reason for these recurring problems is that the available diagnostic procedures provide only indirect evidence for a correctable renal lesion responsible for hypertension. (annals.org)
  • Until then, however, most physicians must rely on an anatomic and functional evaluation of the individual kidneys for the diagnosis of hypertension-producing renal lesions. (annals.org)
  • Takayasu Arteritis Presenting as Renovascular Hypertension and Renal Failure in a Patient with Factor VII Deficiency. (annals.org)
  • Renal artery denervation for patients with uncontrolled hypertension in the absence of renal artery stenosis. (oncologynurseadvisor.com)
  • Renal artery denervation is typically contraindicated in patients with renal artery abnormalities, such as renal artery stenosis, or any known secondary cause of hypertension including a glomerular filtration rate of 45 mL/min. (oncologynurseadvisor.com)
  • 2.1.1 Hypertension is a major risk factor for cardiovascular disease and chronic renal disease. (nice.org.uk)
  • Sympathetic denervation of the renal artery is considered if hypertension fails to respond adequately to these measures. (nice.org.uk)
  • An example of criteria used to select patients for the procedure is given in the Joint UK Societies' Consensus Statement on Renal Denervation for Resistant Hypertension. (nice.org.uk)
  • 2.2.1 Percutaneous transluminal radiofrequency sympathetic denervation of the renal artery for resistant hypertension aims to disrupt neurogenic reflexes involved in blood pressure control. (nice.org.uk)
  • The patient is a 40-year-old female who was on regular hemodialysis for 2 years because of end-stage renal disease secondary to systemic lupus erythematosis and hypertension. (urotoday.com)
  • When atherosclerosis clogs up the arteries leading to the kidneys (the renal arteries), it causes kidney artery disease, which is also known as renal artery stenosis (RAS), renovascular disease, renovascular hypertension and ischemic nephropathy . (secondscount.org)
  • Percutaneous Transluminal Dilatation or Surgery in the Management of Renal Vascular Hypertension? (portlandpress.com)
  • The narrowing and hardening of one or both renal arteries, known as renal artery stenosis, occurs in 1 to 5 percent of people who have high blood pressure, or hypertension. (healthcanal.com)
  • An estimated 78 million Americans have hypertension, according to the AHA, and as many as 3.9 million people in the United States may have renal artery stenosis. (healthcanal.com)
  • misc{etde_7031317, title = {Unilateral renal artery stenosis and hypertension. (osti.gov)
  • Anecdotal evidence suggests that renal artery stenosis (RAS) may be a relevant and treatable cause of hypertension. (bmj.com)
  • In 1934 Goldblatt and Lynch demonstrated that hypertension could be produced in dogs by constricting both renal arteries or removal of one kidney. (bmj.com)
  • 2 Since then extensive clinical experience has linked renal artery stenosis (RAS) or occlusion with hypertension. (bmj.com)
  • A great deal of variety can be found in the anatomy of the renal artery and its branches, but most often the main renal artery splits into an anterior and a posterior division. (medscape.com)
  • In this study, the authors also determined that when accessory renal arteries were identified, the main renal artery measurements were significantly smaller in diameter than when one renal artery was present. (medscape.com)
  • Computed tomography (CT) angiography was used to make final diagnosis which demonstrated intimal flap in main renal artery with renal infarction. (hindawi.com)
  • The complex back-table reconstruction included arterial reconstruction by excising the mouth of the aneurysm and anastomosing the transected superior pole artery into the main renal artery, thus maintaining blood flow to all renal artery branches. (sages.org)
  • Several authors (13) are in favour of surgical embolectomy when renal artery embolism is bilateral or unilateral with a solitary functioning kidney, being the embolus at the main renal artery. (uninet.edu)
  • The branching of the main renal artery into segmental branches more proximally than the renal hilus level is called early division. (omicsonline.org)
  • Hilar arteries enter kidneys from the hilum with the main renal artery, whereas polar arteries enter kidneys directly from the capsule outside the hilum. (omicsonline.org)
  • Selection of the main renal artery showed multiple areas of small pseudoaneursym formation and active extravasations with AV fistula formation in the interpolar to upper polar region of the right kidney(Figure 2). (appliedradiology.com)
  • A final arteriogram in the main renal artery showed no evidence of pseudoaneurysm, active extravasations, or AV fistula (Figure 2). (appliedradiology.com)
  • The right kidney was supplied by an accessory renal artery along with main renal artery. (pulsus.com)
  • Some of these patients may respond favorably to dilating the narrowed artery, using the technique of angioplasty . (medicinenet.com)
  • The patients that can benefit from angioplasty have a severe stenosis (75 % or greater narrowing) of the renal artery and do not have a very high renal vascular resistance. (medicinenet.com)
  • Patients suffering from blockages of the arteries to the kidneys now have access to a new stenting treatment option with the launch today of Cook Medical's Formula Renal Balloon-Expandable Stent at the Society for Cardiovascular Angioplasty and Intervention 2011 Scientific Sessions. (news-medical.net)
  • AngioScore, Inc., a developer of novel angioplasty catheters for use in the treatment of cardiovascular disease, announced today that the company has received 510(k) clearance from the U.S. Food and Drug Administration (FDA) to market its AngioSculpt® PTA Scoring Balloon Catheter for dilatation of lesions in renal arteries. (news-medical.net)
  • Treatment options for diseases of arteries supplying blood to the intestines and kidneys include open surgical (bypass) and endovascular treatment (angioplasty and stents). (ohsu.edu)
  • Such as angioplasty (the opening of a renal artery using a balloon or other method) or placement of a stent (a tiny expandable metal coil placed inside an artery to keep the artery open). (ohsu.edu)
  • Renal arteriogram obtained after renal percutaneous transluminal angioplasty. (medscape.com)
  • Since its introduction in 1978, percutaneous transluminal renal angioplasty (PTRA) has emerged as a highly effective technique for the correction of renal artery stenosis (RAS). (medscape.com)
  • Renal angioplasty has notable physiologic, psychological, and economic advantages over other treatment modalities, and it should now be considered the therapy of choice for renovascular HTN. (medscape.com)
  • Renal angioplasty and stenting. (mayoclinic.org)
  • Renal angioplasty - A small catheter carrying a tiny balloon is inserted through a small puncture in the groin and guided by X-ray to the renal artery. (loyolamedicine.org)
  • Surgical treatment - With the development of new and improved types of stents, renal artery angioplasty with stenting is the preferred treatment for renal artery disease. (loyolamedicine.org)
  • If angioplasty cannot be done on the artery, a surgeon may decide to repair the condition through an incision in your abdomen. (medicalcityhospital.com)
  • Renal artery stent placement, in particular, has gained increasing acceptance on the basis of historical results of renal angioplasty 1-3 ⇓ ⇓ and the attractiveness of percutaneous compared with surgical revascularization. (ahajournals.org)
  • Angioplasty is stretching an artery to widen a narrowed part of it. (edren.org)
  • Patients will be treated by standard medical therapy + stenting angioplasty of renal artery. (clinicaltrials.gov)
  • Treatment is with either balloon angioplasty or a stent to re-open the artery. (sciencephoto.com)
  • If a pressure wire has not been used, once the target lesion and its severity have been confirmed, a 0.014-inch coronary angioplasty guidewire is advanced through the 4-Fr angiographic catheter and across the renal artery stenosis. (oncologynurseadvisor.com)
  • We report a 40-year-old female patient who was treated for transplant renal artery stenosis (TRAS) with angioplasty and primary stenting. (urotoday.com)
  • PlacidWay Medical Tourism provides top clinics for Renal Artery Angioplasty, Vascular Surgery in Switzerland to patients from around the world. (placidway.com)
  • The renal arteries normally arise off the left interior side of the abdominal aorta , immediately below the superior mesenteric artery , and supply the kidneys with blood . (wikipedia.org)
  • The renal arteries carry a large portion of total blood flow to the kidneys. (wikipedia.org)
  • Up to a third of total cardiac output can pass through the renal arteries to be filtered by the kidneys. (wikipedia.org)
  • Due to the position of the aorta , the inferior vena cava , and the kidneys in the body, the right renal artery is normally longer than the left renal artery. (wikipedia.org)
  • The arterial supply of the kidneys is variable and there may be one or more renal arteries supplying each kidney. (wikipedia.org)
  • Supernumerary renal arteries (two or more arteries to a single kidney) are the most common renovascular anomaly, occurrence ranging from 25% to 40% of kidneys. (wikipedia.org)
  • Atherosclerosis can also affect the renal arteries and can lead to poor perfusion of the kidneys leading to reduced kidney function and, possibly, renal failure . (wikipedia.org)
  • Renal artery stenosis can occur in one or both kidneys. (medicinenet.com)
  • Renal refers to anything related to the kidneys. (medicinenet.com)
  • Renal arteries carry blood from the heart to the kidneys. (medicinenet.com)
  • These arteries take a very large volume of blood to the kidneys to be filtered. (medicinenet.com)
  • The decreased blood flow to the kidneys impairs renal function. (medicinenet.com)
  • Intended for patients suffering from renal artery stenosis, a narrowing of the arteries that supply blood to the kidneys, the new device features a low profile design and does not shorten upon expansion. (news-medical.net)
  • The renal arteries are blood vessels that carry blood to the kidneys from the aorta-the main blood vessel that carries blood from the heart to arteries throughout the body. (ohsu.edu)
  • Under normal circumstances, once the renal artery enters through the hilum, it splits into two main branches, which each then split into numerous smaller arteries, which deliver blood to different areas of the kidneys, known as nephrons. (healthline.com)
  • Renal artery stenosis (RAS) is a condition in which the arteries that supply blood to the kidneys narrow. (healthline.com)
  • The renal arteries are responsible for carrying oxygen-rich blood to your kidneys, which in turn helps the kidneys rid your body of waste and excess fluid. (healthline.com)
  • A renal angiogram is a test used to examine the blood vessels of the kidneys. (medlineplus.gov)
  • High-frequency sound waves help your doctor see the arteries and kidneys and check their function. (mayoclinic.org)
  • MRA uses radio waves and strong magnetic fields to produce detailed 3-D images of the renal arteries and kidneys. (mayoclinic.org)
  • In renal artery stenosis, one or both of the arteries leading to the kidneys becomes narrowed, preventing adequate blood flow to the kidneys. (mayoclinic.org)
  • Renal artery stenosis is the narrowing of one or more arteries that carry blood to your kidneys (renal arteries). (mayoclinic.org)
  • Narrowing of the arteries prevents normal amounts of oxygen-rich blood from reaching your kidneys. (mayoclinic.org)
  • Rarely, renal artery stenosis results from other conditions such as inflammation of the blood vessels or a growth that develops in your abdomen and presses on your kidneys' arteries. (mayoclinic.org)
  • This buildup in the renal arteries blocks or reduces the flow of blood to the kidneys, which can cause poorly controlled high blood pressure , congestive heart failure and kidney failure . (loyolamedicine.org)
  • Renal artery stenosis is a narrowing of the arteries that supply blood to the kidneys. (cardiosmart.org)
  • thrombosis , a clot in an artery or vein leading to or from the kidneys is another common condition. (wisegeek.com)
  • Atheroembolic renal disease develops when plaque from a large artery breaks off and travels through the bloodstream, blocking smaller arteries in the kidneys. (wisegeek.com)
  • arteries feeding the kidneys ( renal artery stenosis) or very. (everydayhealth.com)
  • Disease of the arteries that supply blood to the kidneys - a condition known as renal artery stenosis - is less common than the more familiar form of atherosclerosis, peripheral arterial disease, but is equally serious. (clevelandclinic.org)
  • Like the atherosclerosis that affects the arteries of the legs (peripheral artery disease), renal artery disease is caused by the buildup of plaque in the arteries that lead to the kidneys. (clevelandclinic.org)
  • Plaque is made up of fats and cholesterol, and as it accumulates in the renal arteries, it causes the arteries to stiffen and narrow, which blocks the flow of blood to the kidneys. (clevelandclinic.org)
  • If the renal arteries are narrowed or blocked, the kidneys cannot work effectively to control blood pressure. (clevelandclinic.org)
  • Atherosclerosis -Fatty plaque builds up in the arteries and blocks blood flow to the kidneys. (medicalcityhospital.com)
  • There is a significant risk of renal artery occlusion as a result of the procedure, and because atherosclerosis is often severe and widespread, of atheroembolism affecting kidneys, lower limbs, gut and elsewhere. (edren.org)
  • Individuals with high-grade stenosis to both kidneys, or to a solitary functioning kidney thereby affecting the entire functioning renal mass, are considered to have 'bilateral' disease. (uptodate.com)
  • In the stenotic kidneys, captopril produced a fall in renal vascular resistance, but renal blood flow did not rise because there was an approximately equal rise in the resistance of the stenosis. (ahajournals.org)
  • The renal arteries are paired arteries that supply the kidneys with blood. (wikipedia.org)
  • It is narrowing of the artery that supplies blood to the kidneys. (edren.org)
  • Renal artery disease is a form of peripheral artery disease that reduces blood flow through the renal arteries , which supply blood to the kidneys. (simstat.com)
  • In women with renal artery disease, blood flow to the kidneys is reduced or cut off, which may cause high blood pressure and potentially permanent damage to the kidneys. (simstat.com)
  • Illustration of renal arteries and kidneys showing early stages of renal artery disease. (simstat.com)
  • Illustration of renal arteries and kidney showing severe plaque buildup in the renal arteries and aorta , which has cut off blood flow to the kidneys and caused them to shrink. (simstat.com)
  • It is often discovered in women who are undergoing evaluation for other problems such as coronary artery disease, peripheral artery disease of the legs, or high blood pressure, or on routine blood tests that suggest the kidneys are not working properly. (simstat.com)
  • Because the kidneys regulate blood pressure, the first sign of renal artery disease is often high blood pressure. (simstat.com)
  • Renal artery disease decreases the ability of the kidneys to filter and remove waste and fluids from the body, leading to possible renal insufficiency and kidney failure,' said Dr. Robert Bersin, the trial's principal investigator and medical director of endovascular services at Seattle Cardiology and Swedish Medical Center. (news-medical.net)
  • Renal (kidney) and mesenteric (intestinal) artery disease are conditions that develop when the arteries in the abdomen that supply either the kidneys or the intestines become narrowed, or blocked, by an accumulation of a fatty substance called plaque. (nyp.org)
  • In renal artery disease, the narrowed arteries reduce blood flow to the kidneys, causing progressive kidney failure or difficult-to-control high blood pressure in a significant number of patients. (nyp.org)
  • FMD is a condition in which abnormal cells cause narrowing throughout certain arteries, particularly those that supply the kidneys with blood. (nyp.org)
  • People who suffer from a narrowing of the arteries that lead to the kidneys, or renal artery stenosis, do not experience better outcomes when renal stenting is used finds a national research trial. (medindia.net)
  • Decreased kidney function may develop if both kidneys do not receive adequate blood flow, furthermore some people with renal artery stenosis present with episodes of flash pulmonary edema. (wikipedia.org)
  • Diagnosing kidney artery disease early can prevent serious damage to your kidneys and other organs, including the heart. (simstat.com)
  • These tests can determine whether your symptoms are caused by kidney artery disease, and help develop a treatment plan to restore blood flow to the kidneys and prevent future problems. (simstat.com)
  • The two renal arteries, which serve the kidneys, branch from the aorta (upper centre). (sciencephoto.com)
  • Renal artery disease occurs when the arteries that carry blood to the kidneys become narrowed or blocked. (wakehealth.edu)
  • The distal ureter may be rendered ischemic by: (1) traction, stripping, or diathermy during surgery, (2) edema associated with acute rejection, or (3) reduced inflow in kidneys with diseased arteries that are recovered from elderly donors [2,4,5]. (urotoday.com)
  • No matter what you call it, kidney artery disease can have very serious consequences if it is not discovered in time, especially for patients who have high blood pressure, heart failure and other conditions that can put stress on the kidneys. (secondscount.org)
  • Even if you have already developed renal artery disease, lifestyle changes can slow the disease and help your kidneys work better. (dignityhealth.org)
  • The primary cause of renal artery stenosis is atherosclerosis. (medicinenet.com)
  • The majority of renal artery stenosis is caused by atherosclerosis (hardening and narrowing of blood vessel wall from the inside) similar to the process that occurs in blood vessels in the heart and other parts of the body. (medicinenet.com)
  • The associated need for general anesthesia may cause complications in patients, who are often poor candidates because of diffuse atherosclerosis or renal insufficiency. (medscape.com)
  • RAS is primarily caused by a buildup of fatty substances and cholesterol ( atherosclerosis ) in the renal arteries. (healthline.com)
  • Other risk factors for renal artery stenosis are similar to those of other forms of atherosclerosis. (healthline.com)
  • If atherosclerosis is the underlying cause of renal artery stenosis, your doctor may also recommend aspirin and a cholesterol-lowering medication. (mayoclinic.org)
  • Fats, cholesterol and other substances (plaque) can build up in and on your kidney artery walls (atherosclerosis). (mayoclinic.org)
  • Atherosclerosis occurs in many areas of the body and is the most common cause of renal artery stenosis. (mayoclinic.org)
  • Renal artery disease is usually caused by atherosclerosis, hardening of the arteries due to the build up of fatty deposits or plaques along the artery wall. (ucdavis.edu)
  • Renal artery disease most often is related to peripheral artery disease (atherosclerosis in arteries outside the heart) or coronary artery disease. (clevelandclinic.org)
  • In most cases it is caused by build up of cholesterol and lipid on the lining of arteries (atherosclerosis). (edren.org)
  • In 9 out of 10 cases, blockage or narrowing of the renal arteries is caused by atherosclerosis , the same process that causes coronary artery disease and stroke . (simstat.com)
  • When the renal arteries are narrowed by atherosclerosis, it is called Renal Artery Stenosis (RAS). (simstat.com)
  • As plaque builds up inside the artery walls, the arteries can become hardened and narrowed (a process called atherosclerosis). (nyp.org)
  • Atherosclerosis affects up to 35 percent of Americans, and can cause narrowing (also called stenosis) of any of the arteries throughout the body. (nyp.org)
  • As atherosclerosis affects the whole body, people with renal or mesenteric artery narrowing often have other cardiovascular conditions such as carotid artery disease and heart disease. (nyp.org)
  • Risk factors for renal and mesenteric artery disease include smoking - the number one risk factor for all cardiovascular diseases - a family history of atherosclerosis, high blood pressure, diabetes, high cholesterol, advanced age, obesity, and a sedentary lifestyle. (nyp.org)
  • Renal artery stenosis is most often caused by atherosclerosis which causes the renal arteries to harden and narrow due to the build-up of plaque. (wikipedia.org)
  • Because kidney artery disease is usually caused by atherosclerosis, the gradual buildup of fatty deposits on the walls of the arteries, you are at risk for developing the disease if you already have artery problems elsewhere in your body. (simstat.com)
  • Renal artery disease can result from fatty deposits, called plaque, building up in the arteries and causing them to become narrow and blocked (a process called atherosclerosis). (wakehealth.edu)
  • The buildup of plaque in the arteries (atherosclerosis) is common in people who are smokers, have high blood pressure or high cholesterol . (wakehealth.edu)
  • When fatty deposits called plaque build up in the arteries that supply blood throughout the body, it is called atherosclerosis . (secondscount.org)
  • Atherosclerosis can eventually narrow and block the arteries, restricting or blocking the flow of the blood. (secondscount.org)
  • Study investigators today reported initial data from Cook Medical's REFORM clinical trial that is aimed at assessing the safety and effectiveness of the company's balloon-expandable renal stent for the treatment of renal artery stenosis. (news-medical.net)
  • Cook Medical has submitted its Pre-Market Approval (PMA) application to the U.S. Food and Drug Administration (FDA) for its new balloon expandable stent for renal artery disease. (news-medical.net)
  • Alone or in combination with stent implantation, PTRA is increasingly used as an alternative to surgical revascularization for the treatment of RAS, which may cause HTN or jeopardize renal function. (medscape.com)
  • This special type of X-ray exam helps your doctor find the blockage in the renal arteries and sometimes open the narrowed part with a balloon and stent. (mayoclinic.org)
  • Explain to interested patients that narrowing of the renal artery is often treated with a stent, although there is little evidence to support such therapy. (medpagetoday.com)
  • A stent (small mesh tube) may then be placed in the artery to hold it open. (loyolamedicine.org)
  • We decided to perform renal catheterization for stent implantation and the resolution of the said stenosis. (ahajournals.org)
  • Current treatment includes restoration of the renal arterial lumen by endovascular stent placement. (clinicaltrials.gov)
  • The additional effect on preserving renal function of stent placement as compared to medical therapy alone is unknown. (clinicaltrials.gov)
  • Therefore, the STAR-study aims to compare the effects of renal artery stent placement together with medication vs. medication alone on renal function in ARAS patients. (clinicaltrials.gov)
  • Filing for pre-market approval with the FDA is a significant step forward for us in bringing our new renal stent to market in the U.S. (news-medical.net)
  • Filing for pre-market approval with the FDA is a significant step forward for us in bringing our new renal stent to market in the U.S.,' said Rob Lyles, vice president and global business unit leader of Cook Medical's Peripheral Intervention division. (news-medical.net)
  • The ongoing clinical trial has afforded us an opportunity to evaluate the impact of the stent on renal artery revascularization and related clinical outcomes, and we are confident this treatment method will diversify the interventional landscape. (news-medical.net)
  • A stent is a small tube that holds open the artery at the site of the blockage. (nyp.org)
  • The stent is left permanently in the artery to provide a reinforced channel through which blood can flow. (nyp.org)
  • If imaging of the renal arteries has been obtained, radial or brachial artery access is often preferred if the renal arteries are oriented cephalad for ease of engagement of the guiding catheter and stent delivery. (oncologynurseadvisor.com)
  • In a 78-year-old patient I would not prefer thoracophernolaparotomy and cardiopulmonary bypass when there is an easier alternative such as abdominal de-branching (implantation of the both renal arteries, celiac and superior mesenteric arteries with the use of a self made quadrifurcated ringed PTFE graft to the distal infra-renal abdominal aorta) and endovascular stent grafting. (ctsnet.org)
  • left artery lies behind the left renal vein, the body of the pancreas and the splenic vein , and is crossed by the inferior mesenteric vein . (wikipedia.org)
  • The left renal artery passes laterally from the abdominal aorta into the left kidney. (innerbody.com)
  • L.RA, left renal artery) suggestive of significant bilateral renal arteries stenosis. (bmj.com)
  • A nuclear renal scan (MAG3) confirmed equal right and left renal function. (sages.org)
  • My peak systolic velocity of right renal artery is 95 cm/sec whereas left renal artery is 215cm/sec. (healingwell.com)
  • The renal and systemic changes after stenosis of the left renal artery (n = 5) or sham stenosis (n = 6) in conscious dogs were studied sequentially over 25 days. (ahajournals.org)
  • Complete occulusion of left renal artery in pediatric-onset Takayasu's arteritis. (biomedsearch.com)
  • A-16-year-old male adolescent with a 4-year history of protean clinical manifestations such as fever, abdominal pain, back pain, erythema nodosum and uveitis developed complete occlusion of left renal artery. (biomedsearch.com)
  • Finally, an angiography disclosed stenosis of abdominal aorta just beneath the origin of the renal arteries as well as complete occlusion of left renal artery. (biomedsearch.com)
  • The computed tomographic (CT) scan showed a left renal infarct. (ahajournals.org)
  • Coloured frontal angiogram of the abdomen of a 48-year-old patient with stenosis (narrowing) of the left renal artery. (sciencephoto.com)
  • The left renal artery has become narrowed (indicated by arrow). (sciencephoto.com)
  • The left renal vein also receives left suprarenal and left gonadal veins, in addition to the vein coming out from the kidney. (omicsonline.org)
  • The aorta was cross-clamped distally a few centimeters below the left renal artery. (ctsnet.org)
  • The celiac, superior mesenteric, and right and left renal arteries were divided and cannulated. (ctsnet.org)
  • The left renal artery was then anastomosed via a separate graft in an end-to-side fashion to the main graft and flow was re-established. (ctsnet.org)
  • Reversible renal failure with renal artery occlusion. (bmj.com)
  • Quantock O P , Thatcher G N . Reversible renal failure with renal artery occlusion. (bmj.com)
  • Up to 15% of cases lead to complete occlusion with loss of renal function. (edren.org)
  • Renal artery occlusion may occur suddenly or gradually. (freemd.com)
  • A sudden renal artery occlusion is usually caused by a blood clot in the renal artery, called a renal artery thrombosis. (freemd.com)
  • Traumatic renal artery occlusion: a 15-year review. (freemd.com)
  • The following are some important questions to ask before and after the treatment of renal artery occlusion. (freemd.com)
  • and balloon catheter occlusion was used to embolize the branch of the renal artery in one patient with renal artery trunk laceration. (dovepress.com)
  • The patient who received balloon catheter occlusion for renal artery trunk laceration was transferred immediately to surgery for emergency nephrectomy. (dovepress.com)
  • Partial or segmental renal artery occlusion and the finding of good collateral circulation is associated with favourable outcome for both surgical and fibrinolytic therapy (12). (uninet.edu)
  • The findings at preoperative nephroanigiography of 42 hypertensive patients with unilateral renal artery stenosis or occlusion were correlated with the blood pressure response following surgery and also with the preoperative renal vein renin activity ratio. (osti.gov)
  • Minimally invasive therapy by super selective trans-catheter embolization provides permanent occlusion of the pseudoaneurysms that preserves maximum renal function. (appliedradiology.com)
  • 3 We considered that renal artery occlusion, as in other arteries, might be a feature of APS. (bmj.com)
  • Smith PA, Fishman EK (1998) Three-dimensional CT angiography: renal applications. (springer.com)
  • 2003) Aortoiliac and renal arteries: prospective intraindividual comparison of contrast-enhanced 3D MR angiography and multi-detector row CT. (springer.com)
  • We believe that the mentioned stenosis was caused by a direct endothelial lesion from the use of the catheter (monopolar), which was resolved spontaneously over time (2 years), leaving a small residual stenosis in the proximal area of both arteries, detected by the CT, although they were not significant after being checked by angiography. (ahajournals.org)
  • This small study was carried out to assess whether selective blood sampling during renal angiography could demonstrate an arterio-venous gradient of EPCs in 5 patients with renal artery stenosis. (nih.gov)
  • Incidental patients affected by ischemic heart disease,undergoing cardiac catheterization at a single institution, are also evaluated for the presence of RAS by renal angiography at the end of coronarography. (clinicaltrials.gov)
  • Krijnen and colleagues (1) presented a clinical prediction rule for quantifying the probability of finding renal artery stenosis (RAS) on renal angiography. (annals.org)
  • Renal artery angiography is performed in patients with appropriate indications who have noninvasive computed tomography angiogram [CTA] and magnetic resonance angiogram [MRA] or ultrasound) evidence of moderate to severe renal artery stenosis. (oncologynurseadvisor.com)
  • The artery is engaged with the less traumatic 4-Fr angiographic catheter, and selective diagnostic renal angiography is performed. (oncologynurseadvisor.com)
  • Angiography remains the gold standard to diagnose traumatic renal artery pseudoaneurysm and may reveal smaller lesions than the other techniques, as was demonstrated here. (appliedradiology.com)
  • Magnetic resonance renal angiography was used to image the renal arteries in all three groups. (bmj.com)
  • Reformatted CT angiography images demonstrate bilateral accessory renal arteries arising from lateral aspects of abdominal aorta. (radiopaedia.org)
  • Two- and three-dimensional angiography of the distal renal artery aneurysm, showing the large neck of 10.7 mm. (em-consulte.com)
  • Andreas Gruntzig revolutionized the technique in 1974 when he developed a soft, flexible, double-lumen balloon catheter for use in coronary arteries. (medscape.com)
  • Renal artery stenosis often occurs in combination with peripheral arterial or coronary artery disease, and its prevalence among the elderly has been reported to be as high as 7% . (medpagetoday.com)
  • I can find articles for coronary bypass, but not renal artery bypass. (healthboards.com)
  • dyes, or if you have heart disease, coronary artery . (everydayhealth.com)
  • before and after coronary artery bypass surgery or. (everydayhealth.com)
  • before two types of heart surgery, coronary artery . (everydayhealth.com)
  • Women with renal artery disease often have some degree of coronary artery disease, carotid artery disease, peripheral artery disease, or aortic disease, and are at increased risk for heart attack and stroke. (simstat.com)
  • Women with coronary artery disease, carotid artery disease , or peripheral artery disease in the legs are at high risk for renal artery disease. (simstat.com)
  • One in 13 women who undergo cardiac catheterization because of suspected coronary artery or aortic disease have significant renal artery disease.4,5 It is not known why renal artery disease is more common in women than men in this population. (simstat.com)
  • The Stenting of Renal Artery Stenosis in Coronary Artery Disease (RASCAD) study is a randomized controlled trial designed to evaluate the effect of renal artery stenting+medical therapy versus medical therapy alone on left ventricular mass progression and cardiovascular morbidity and mortality in patients affected by coronary artery disease and renal artery stenosis. (clinicaltrials.gov)
  • The Stenting of Renal Artery Stenosis in Coronary Artery Disease (RASCAD) study was planned to test whether renal artery revascularization, compared with medical therapy, affects left ventricular hypertrophy progression and clinical outcomes in a high-risk population such as patients with evidence of coronary artery disease and RAS. (clinicaltrials.gov)
  • Renal Artery Stenosis in Coronary Artery Disease: Medical Therapy Versus Medical Therapy Plus Renal Artery Stenting in Preventing Cardiac and Renal Outcomes. (clinicaltrials.gov)
  • Possible complications of renal artery stenosis are chronic kidney disease and coronary artery disease. (wikipedia.org)
  • If you have been diagnosed with PAD, carotid artery disease, or coronary artery disease (especially in two or more of the coronary arteries), your doctor may request further tests to see if your kidney arteries are also narrowed or blocked. (simstat.com)
  • Cardiac destabilization includes symptomatic coronary ischemia or heart failure, in the presence of a significant renal artery stenosis, not amenable to coronary artery revascularization. (oncologynurseadvisor.com)
  • Coronary-artery calcification in young adults with end-stage renal disease who are undergoing dialysis. (nih.gov)
  • None of the 23 patients who were younger than 20 years of age had evidence of coronary-artery calcification, but it was present in 14 of the 16 patients who were 20 to 30 years old. (nih.gov)
  • The mean serum phosphorus concentration, the mean calcium-phosphorus ion product in serum, and the daily intake of calcium were higher among the patients with coronary-artery calcification. (nih.gov)
  • Contraindications to OPCAB or conditions that make OPCAB suboptimal include: intramyocardial or severely calcified coronary arteries, physiologic intolerance to cardiac manipulation, and requirement for intracardiac (e.g., valve replacement) surgery. (renalandurologynews.com)
  • Most OPCAB procedures are currently performed via median sternotomy although other approaches are occasionally utilized (i.e., limited left anterolateral thoracotomy [minimally invasive direct coronary artery bypass or MIDCAB], robotic via thoracic ports). (renalandurologynews.com)
  • Although OPCAB may be performed emergently, the presence of hemodynamic instability, arrhythmias, and intramyocardial or severely calcified coronary arteries is a relative contraindication. (renalandurologynews.com)
  • Renal artery stenosis can lead to conditions such as chronic kidney disease and can appear alongside conditions including coronary artery disease. (healthcanal.com)
  • Further explora?tion confirmed a ruptured right renal artery aneurysm. (hcplive.com)
  • ICD-10-PCS code 04R90JZ for Replacement of Right Renal Artery with Synthetic Substitute, Open Approach is a medical classification as listed by CMS under Lower Arteries range. (aapc.com)
  • 2002) Interob-server agreement on captopril renography for assessing renal vascular disease. (springer.com)
  • Endarterectomy - A vascular surgeon surgically removes plaque from an artery that has become narrowed or blocked. (loyolamedicine.org)
  • John A. Stathopoulos, "Modification of the No-Touch Technique during Renal Artery Stenting," Case Reports in Vascular Medicine , vol. 2013, Article ID 516267, 3 pages, 2013. (hindawi.com)
  • known as peripheral artery disease Renal vascular. (everydayhealth.com)
  • The authors report a 9-y old boy with hypertensive emergency and severe hyponatremia due to unilateral renal artery stenosis who was successfully managed by vascular stenting of the affected vessel. (biomedsearch.com)
  • In over-50s it is usually caused by atheroma at the orifice of the renal artery, and is almost always accompanied by disease of other branches of the aorta, particularly peripheral vascular disease. (edren.org)
  • Evaluates intrarenal vascular abnormalities in addition to abnormalities of the renal arteries and aorta. (oncologynurseadvisor.com)
  • Renal-artery stenosis is a significant public health issue, so it was important that we go beyond following blood pressure and kidney function," explained Murphy, an interventional radiologist and the medical director of the Vascular Disease Research Center at Rhode Island Hospital. (medindia.net)
  • Renal artery revascularization is contraindicated in patients in whom arterial vascular access cannot be obtained. (oncologynurseadvisor.com)
  • Depending on physician or patient preference, vascular access may be obtained in the radial, brachial, or common femoral artery. (oncologynurseadvisor.com)
  • Renal artery disease is a type of peripheral vascular disease, which also includes peripheral artery disease , carotid artery disease , mesenteric artery disease , aortic disease, venous problems , and some other conditions, such as vasculitis. (wakehealth.edu)
  • Recognize renal sonographic anatomy including common anomalies of the renal vascular system. (gcus.com)
  • Knowledge of the variations of renal vascular anatomy has importance in exploration and treatment of renal trauma, renal transplantation, renal artery embolization, surgery for abdominal aortic aneurysm and conservative or radical renal surgery. (omicsonline.org)
  • After the artery is completely or partially transected, hemorrhage may be contained in the surrounding tissues such as the vascular adventitia, Gerota's fascia. (appliedradiology.com)
  • Renal transplantation is quiet impressive number as it is a treatment of choice for chronic kidney diseases so knowledge of variations in blood supply of kidney, suprarenal gland and gonad during surgical intervention, renal vascular imaging and understanding of medical problem related with kidney diseases. (pulsus.com)
  • Variant blood supply to suprarenal gland, kidney and gonad is important during surgery, interventional radiography and anatomical point of view because it can affect the orientation of the surgeon during laparoscopic adrenalectomy, kidney transplantation, renal vascular imaging to prevent unwanted complications. (pulsus.com)
  • Accessory renal arteries are countered as common abdominal vascular variant. (radiopaedia.org)
  • One or two accessory renal arteries are frequently found, especially on the left side since they usually arise from the aorta, and may come off above (more common) or below the main artery. (wikipedia.org)
  • They branch directly from the aorta (the main artery coming off the heart) on either side and extend to each kidney. (medicinenet.com)
  • An artery with its origin in the aorta and with distribution to the kidney. (dictionary.com)
  • The renal arteries arise from the aorta at the level of the intervertebral disk between L1 and L2. (medscape.com)
  • Subsequent magnetic resonance arteriography confirmed a segmental coarctation of the thoracic aorta immediately distal to the takeoff of the left subclavian artery (right, lower panel, arrow points to coarctation). (bmj.com)
  • The renal arteries normally arise at a 90° angle off of the left interior side of the abdominal aorta, immediately below the superior mesenteric artery. (wikipedia.org)
  • Accessory renal artery arising from infrarenal aorta, exposed during linphadenectomy due to cytoreductive surgery and HIPEC. (wikipedia.org)
  • A chronic inflammatory process that affects the AORTA and its primary branches, such as the brachiocephalic artery (BRACHIOCEPHALIC TRUNK) and CAROTID ARTERIES. (bioportfolio.com)
  • The specific criteria for renal artery stenosis on Doppler are an acceleration time of greater than 70 milliseconds, an acceleration index of less than 300 cm/sec² and a velocity ratio of the renal artery to aorta of greater than 3.5. (wikipedia.org)
  • The large blood vessel running from top to bottom is the aorta, the main artery of the body. (sciencephoto.com)
  • Renal arteries are a pair of lateral branches from abdominal aorta. (pulsus.com)
  • The renal arteries are a pair of lateral branches arising from the abdominal aorta below the level of superior mesenteric artery at the upper lumbar level (L1-L3). (omicsonline.org)
  • The aorta was mobilized at the level of the left inferior pulmonary ligament and below the renal arteries. (ctsnet.org)
  • A 22 mm graft with three previously constructed branches corresponding to the celiac, SMA, and right renal arteries was anastomosed to the descending thoracic aorta in a continuous fashion. (ctsnet.org)
  • Accessory renal arteries arise from the abdominal aorta and supply the inferior pole of the kidney in majority of cases. (radiopaedia.org)
  • A renal artery aneurysm (RAA) is defined as a dilated segment of renal artery that exceeds twice the diameter of a normal renal artery. (medscape.com)
  • Need to make a doctor appointment for Renal Artery Aneurysm this week? (zocdoc.com)
  • What Is a Renal Artery Aneurysm? (wisegeek.com)
  • A renal artery aneurysm is a weak area in the artery that goes to the kidney . (wisegeek.com)
  • Treatment for a renal artery aneurysm involves surgery. (wisegeek.com)
  • A fusiform aneurysm bulges out on every side of the artery, while a saccular aneurysm only bulges on one side. (wisegeek.com)
  • An intrarenal aneurysm is located on an artery inside of the kidney. (wisegeek.com)
  • A dissecting renal artery aneurysm is often painful. (wisegeek.com)
  • The healthcare provider will monitor the renal artery aneurysm to make sure it is not getting larger. (wisegeek.com)
  • The danger of a renal artery aneurysm is that it may rupture. (wisegeek.com)
  • The authors report the case of a ruptured renal artery aneurysm in a 66-year-old woman who presented with abdominal pain and coffee-ground emesis. (hcplive.com)
  • We report the case of a ruptured renal artery aneurysm in a patient presenting with a massive perirenal he?matoma and discuss the management of such aneurysms. (hcplive.com)
  • The radiology report suggested that the probable underlying pathology was a renal neoplasm or ruptured renal artery aneurysm. (hcplive.com)
  • The option of nephrectomy as means of treating the aneurysm was discussed with the patient, however he opted for renal salvage. (sages.org)
  • Does Lower Limb Exercise Worsen Renal Artery Hemodynamics in Patients with Abdominal Aortic Aneurysm? (plos.org)
  • page needed] Renal Artery Aneurysm at eMedicine Aytac, Suat K. (wikipedia.org)
  • Other less common causes include renal artery aneurysm (weakening of the artery wall that causes it to bulge out and eventually rupture) and some rare disorders of the artery lining. (simstat.com)
  • In addition to diagnosing kidney artery disease, these imaging tests can also identify problems in nearby blood vessels (such as an aortic aneurysm) and help develop a treatment plan. (simstat.com)
  • Surgical treatment of intraparenchymal aneurysm is usually partial nephrectomy or ligation of the parental artery which causes large amount of parenchymal loss. (appliedradiology.com)
  • Computed tomography of a right adrenal adenoma (26 mm diameter), coexisting with homolateral distal renal artery aneurysm (11.7 mm diameter). (em-consulte.com)
  • TORONTO, June 17 -- In patients with narrowing of the renal artery, stents had no clear effect on the progression of impaired renal function, European researchers said. (medpagetoday.com)
  • According to Dworkin, these results are significant as they will lead to a reduction in the number of renal stents that are inserted in patients who experience renal-artery stenosis. (medindia.net)
  • Stents do a good job in opening the arteries, but less invasive medical therapies, which have only gotten better over time, means that patients can often avoid more invasive stenting procedures," he said. (medindia.net)
  • You found that stents successfully opened the arteries. (healthcanal.com)
  • They found low-strength evidence of no difference in mortality, progression to end-stage renal disease, cardiovascular disease event rates, or blood pressure control between PTRAS and medical therapy, although none of the studies was powered to detect these differences. (medscape.com)
  • The newly published study is one of the largest randomized trials ever to assess the impact of renal artery stenting in patients with moderately severe obstructive renovascular disease, with the incidence of important cardiovascular and renal adverse events its major endpoints. (medpagetoday.com)
  • Primary endpoints included death from cardiovascular or renal causes, stroke, heart attack, hospitalization for congestive heart failure, progressive renal insufficiency, or the need for permanent renal-replacement therapy. (medpagetoday.com)
  • They concluded that this regimen provided " remarkably good cardiovascular and renal outcomes" despite the advanced age and comorbidities of the study participants. (medpagetoday.com)
  • There were also no significant differences in blood pressure control and cardiovascular morbidity and mortality, the researchers said, or in the composite outcome of worsening renal function and death. (medpagetoday.com)
  • If you have plaque buildup in the renal arteries, you will also need treatment for cardiovascular risk factors such as high blood pressure , high cholesterol and diabetes . (loyolamedicine.org)
  • Lipidlowering drugs (statins) could reduce renal failure progression and could reduce the overall high cardiovascular risk. (clinicaltrials.gov)
  • Participants were then followed for up to seven years to monitor for significant clinical events, such as cardiovascular or renal death, myocardial infarction, stroke, hospitalization for congestive heart failure, progressive renal insufficiency or renal replacement therapy. (medindia.net)
  • The goal for either pharmacological or revascularization therapy of ARAS should be normalization of blood pressure, preservation of renal function, and reduction of the risk of cardiovascular events. (onlinejacc.org)
  • Since, optimal therapy in patients with ARAS should include optimal blood pressure control with pharmacological agents, modification of cardiovascular risk factors, the appropriate use of antiplatelet therapy, and lipid-lowering therapy, the clinically relevant question then becomes which patients are likely to benefit from renal artery revascularization and who should be targeted for such therapies. (onlinejacc.org)
  • Cardiovascular disease is common in older adults with end-stage renal disease who are undergoing regular dialysis, but little is known about the prevalence and extent of cardiovascular disease in children and young adults with end-stage renal disease. (nih.gov)
  • 2.3.3 The Specialist Advisers listed key additional efficacy outcomes as reduction in cardiovascular morbidity and mortality, improvement in the parameters of renal function and regression in left ventricular mass. (nice.org.uk)
  • Kidney (or renal) artery disease is one way that cardiovascular disease affects the system that distributes blood throughout your body. (secondscount.org)
  • Effective treatment of renal artery stenosis can improve blood pressure control, stabilize kidney function, and reduce incidence of serious cardiovascular events. (healthcanal.com)
  • We can help you prevent future cardiovascular problems with renal artery stenosis treatment on the Central Coast of California. (dignityhealth.org)
  • Dignity Health's award-winning cardiovascular doctors provide effective renal artery disease treatment on the Central Coast of California. (dignityhealth.org)
  • The primary outcome was a composite of death from cardiovascular or renal causes, stroke, myocardial infarction, hospitalization for acute heart failure, worsening renal insufficiency, or the need for permanent dialysis. (aafp.org)
  • Bypass procedure - Involves using a segment from another artery or vein to construct a detour around the blockage in the renal artery. (loyolamedicine.org)
  • I showed some blockage in one of my arteries. (healthboards.com)
  • When the catheter reaches the blockage, the balloon is inflated to widen the narrowed artery. (nyp.org)
  • Imaging tests allow doctors to determine if one or both of your main kidney arteries is narrowed or blocked and how severe the blockage is. (simstat.com)
  • If your other kidney is not working fully, blockage of the renal artery may cause symptoms of acute kidney failure. (wakehealth.edu)
  • Do I need to go for renal artery blockage investigation? (ndtv.com)
  • Home » Frequently asked Questions on Health » Do I need to go for renal artery blockage investigation? (ndtv.com)
  • The nephrologist has asked me to go for renal artery blockage investigation. (ndtv.com)
  • I feel that this shrinking of my Kidney has happened in last 4 years and is due to a renal artery blockage. (ndtv.com)
  • 1996) Value of Doppler parameters in the diagnosis of renal artery stenosis. (springer.com)
  • Ultrasound and Colour Doppler examination is not sensitive enough to detect the dissection or renal infarction. (hindawi.com)
  • Although transfemoral arteriography performed early on seems to offer the best diagnostic sensitivity (8) , renal power doppler, scintigraphy and computed tomography (9), have been found useful. (uninet.edu)
  • List examination protocols and scan techniques for successful Doppler evaluation of renal artery stenosis using the direct interrogation method. (gcus.com)
  • Often the diagnosis of renal artery pseudoaneurysm is made by CT, but magnetic resonance, Doppler sonography and renal perfusion imaging can be used as well. (appliedradiology.com)
  • Follow-up visits at times ranging from 6 months to 9 years after the procedure showed normal renal function without evidence of complications in all surviving patients. (dovepress.com)
  • Complications of Renal Artery Stenosis are secondary conditions, symptoms, or other disorders that are caused by Renal Artery Stenosis. (rightdiagnosis.com)
  • In many cases the distinction between symptoms of Renal Artery Stenosis and complications of Renal Artery Stenosis is unclear or arbitrary. (rightdiagnosis.com)
  • The procedure appears to be safe in patients with multiple arteries, with similar complications rates. (scielo.br)
  • medical citation needed] Changes include: Fibrosis Tubular cell size (decrease) Thickening of Bowman capsule Tubulosclerosis Glomerular capillary tuft (atrophy) Play media The diagnosis of renal artery stenosis can use many techniques to determine if the condition is present, a clinical prediction rule is available to guide diagnosis. (wikipedia.org)
  • Tests for renal artery disease help confirm a diagnosis or rule it out. (wakehealth.edu)
  • More recently, other authors (4) have reported that correct diagnosis at admission was made in only 4 out of 17 patients diagnosed with renal artery embolism. (uninet.edu)
  • Our group (7) has recently designed an algorithm for diagnosis of renal embolism, based on LDH determination at the hospital emergency room in all patients in whom renal artery embolism is suspected (Table I) Microscopic or chemical hematuria is the most common finding on urinalysis. (uninet.edu)
  • Success in the management of renal artery embolism lies in an early diagnosis as well as in prompt suitable treatment, bearing in mind that although the duration of renal ischemia is important, it does not correlate directly with renal damage, especially if incomplete obstruction or collateral circulation is present. (uninet.edu)
  • Acute renal failure due to RAE should be considered in the differential diagnosis of elderly patients with atrial fibrillation or valvular cardiopathy suffering from abnormal lumbar pain and anuria, which resembles nephritic cholic pain. (uninet.edu)
  • A 49 year old man was referred to our interventionist for percutaneous revascularisation for suspected bilateral renal artery stenosis. (bmj.com)
  • Since the initial description of renal artery stenting by Gruntzig in 1978, there have been several contrasting studies on the efficacy of percutaneous revascularization for renal artery stenosis with absence of a consistent benefit. (onlinejacc.org)
  • Therefore, we hypothesized that intensive lipid lowering could offer more benefits with respect to renal function in the patients with percutaneous renal artery stenting. (clinicaltrials.gov)
  • Patients who have received a new kidney are significantly more likely to develop transplant renal artery stenosis (TRAS) if they are obese or over 50, according to research published in the September issue of the Journal of Renal Care. (news-medical.net)
  • Transluminal dilatation of transplant renal artery stenosis. (bmj.com)
  • Quin R O , Hamilton D N , Briggs J D , Junor B J , Semple P F . Transluminal dilatation of transplant renal artery stenosis. (bmj.com)
  • Renal dysfunction that is observed in cases of transplant renal artery stenosis (TRAS) is the direct result of significant allograft hypoperfusion that is also likely to compromise the blood supply to the distal ureter [6]. (urotoday.com)
  • In 2014 we published the case of a bilateral renal stenosis, after renal arteries denervation (4). (ahajournals.org)
  • Bilateral renal arteries were normal. (bmj.com)
  • Bilateral renal artery stenosis, or stenosis to a solitary functioning kidney, merits specific consideration because of its additional contribution to fluid retention, loss of kidney function, and congestive heart failure. (uptodate.com)
  • Laboratory analyses can reveal renal insufficiency only in patients suffering from bilateral renal embolism or in those with unilateral renal embolism in which the contralateral kidney is nonfunctional or has been removed. (uninet.edu)
  • Thickening and loss of elasticity of the walls of medium and large muscular arteries with lesions in the innermost layer. (citizendium.org)
  • Preserved vascularization either by incomplete obstruction or by collateral circulation, enables the ischemic kidney to restore its renal output when renal artery flow is re-established and tubular lesions have healed. (uninet.edu)
  • The term renal artery stenosis (RAS) applies to a cluster of disease conditions with varying etiologies. (news-medical.net)
  • Renal artery stenosis is a variant of peripheral arterial disease and ARAS accounts for 90% of all cases. (news-medical.net)
  • https://www.niddk.nih.gov/health-information/kidney-disease/renal-artery-stenosis. (mayoclinic.org)
  • ARVD is a cause of chronic kidney disease and end stage renal failure. (loyolamedicine.org)
  • artery disease. (everydayhealth.com)
  • High blood pressure that is not controlled by medications and lifestyle changes, including diet and exercise, may be a symptom of renal artery disease. (clevelandclinic.org)
  • Symptoms of renal artery disease may also include episodes of fluid retention or congestive heart failure. (clevelandclinic.org)
  • In some cases, renal artery disease may be entirely asymptomatic (not associated with any symptoms).In severe cases, renal artery disease may lead to kidney failure. (clevelandclinic.org)
  • In most cases of renal artery stenosis, one kidney is affected with the second kidney being essentially normal, hence the designation 'unilateral' disease. (uptodate.com)
  • In prospective treatment trials of patients with renal artery stenosis, the prevalence of bilateral disease (rather than unilateral disease) ranged from 23 to 54 percent [ 2-4 ]. (uptodate.com)
  • This is the same disease that cause heart attack and angina when it affect arteries of the heart. (edren.org)
  • Signs of disease in the arteries can include a bruit (a sound with a stethoscope suggesting a narrowed artery), which may be heard over the abdomen in the case of renal artery stenosis. (edren.org)
  • Although a few have blockages in only their renal arteries, most women with kidney artery disease also have disease in other arteries. (simstat.com)
  • Kidney artery disease can also contribute to heart failure. (simstat.com)
  • FMD is a common cause of renal artery disease in women aged 25 to 50, although it can occur in both genders at any age. (simstat.com)
  • When renal artery disease is caused by FMD it has a characteristic appearance on imaging tests, with the arteries looking like a "string of beads. (simstat.com)
  • Who is at risk for renal artery disease? (simstat.com)
  • If you have artery disease elsewhere in your body, you are at risk of developing it in your renal arteries as well. (simstat.com)
  • Like other forms of artery disease, renal artery disease becomes more common as you get older, and is more likely to occur in women with certain characteristics or conditions (called risk factors) that cause the buildup of fatty deposits in the arteries. (simstat.com)
  • Renal artery disease is often silent and may not cause symptoms until it is severe enough to block blood flow to the kidney. (simstat.com)
  • With renal artery disease, patients can develop high blood pressure that is very difficult to control, and in extreme cases kidney failure. (nyp.org)
  • With mesenteric artery disease, patients can experience weight loss and severe abdominal pain when they eat. (nyp.org)
  • If renal or mesenteric artery disease is very advanced, or if blockages develop in an artery that is difficult to reach with a catheter, arterial bypass surgery may be necessary to restore blood flow. (nyp.org)
  • You may be evaluated for kidney artery disease if your doctor notices certain signs during a physical examination or routine blood tests. (simstat.com)
  • If your kidney artery disease is causing high blood pressure, prompt treatment could reduce your risk of suffering a heart attack, stroke, or heart failure. (simstat.com)
  • A medical history includes a complete review of any medical conditions you have (especially risk factors for renal artery disease), surgeries and other procedures you've had in the past, and any medications you are taking (including prescription drugs, over-the-counter medications, and dietary supplements). (simstat.com)
  • A history of all medications you are taking is also important to diagnose kidney artery disease. (simstat.com)
  • Severe high blood pressure, especially in younger women, is often the first sign of kidney artery disease. (simstat.com)
  • If your doctor finds signs of kidney artery disease during the physical examination or on blood tests, she or he may order imaging tests to examine the shape of your kidney arteries and blood flow through them. (simstat.com)
  • Among those with chronic renal disease or established nephropathy, one of the more meaningful end points is the rate of progression to renal replacement therapy or dialysis. (onlinejacc.org)
  • Only you and your doctor can decide which renal artery disease treatment is right for you. (wakehealth.edu)
  • Participants, whose average age was 69 years, had renal artery stenosis and either systolic blood pressure of 150 mmHg or higher while taking two or more drugs or Stage 3 (moderate) chronic kidney disease. (healthcanal.com)
  • 4,5 It is not known why renal artery disease is more common in women than men in this population. (hearthealthywomen.org)
  • Renal artery stenting remains a common procedure in current clinical practice," Christopher J. Cooper, MD, of the University of Toledo in Toledo, Ohio, and colleagues, wrote in NEJM . (medpagetoday.com)
  • The CORAL study shows that, when added to a background of high-quality medical therapy, contemporary renal artery stenting provides no incremental benefit. (medpagetoday.com)
  • Likewise, two randomized studies published in 2009 -- the ASTRAL trial and the STAR trial -- failed to show a clear benefit for renal artery stenting with respect to kidney function. (medpagetoday.com)
  • Study participants were randomized to receive either medical therapy alone or medical therapy plus renal artery stenting. (medpagetoday.com)
  • Renal artery stenting - A catheter is inserted through a small puncture site or incision into a blood vessel in the arm or leg and guided into the renal artery. (loyolamedicine.org)
  • Renal artery stenting, in particular, represents a new revascularization technique that has undergone tremendous procedural growth, which justifies a critical reanalysis of indications and outcomes. (ahajournals.org)
  • Our findings clearly show that renal artery stenting does not confer any benefit for the prevention of clinical events when added to a comprehensive, multi-factorial medical therapy. (medindia.net)
  • They were randomly assigned to medical therapy plus renal-artery stenting or medical therapy alone. (medindia.net)
  • What researchers found was that renal stenting did not make a difference in outcomes for patients. (medindia.net)
  • Several parameters have been suggested to predict clinical improvement after renal artery stenting such as the renal artery resistance index ( 6,7 ), renal size, and renal vein renin measurement, but the predictive value of such indexes has not been consistent. (onlinejacc.org)
  • Despite the lack of a consistent benefit, the number of renal artery stenting procedures has quadrupled in the last decade ( 8 ). (onlinejacc.org)
  • It, therefore, would be logical to try and understand the rationale for these procedures and try and define the patient cohort most likely to benefit from renal artery stenting. (onlinejacc.org)
  • The purpose of the study was to try to evaluate the utility of renal artery stenting in the treatment of patients with adverse sclerotic renal artery stenosis. (healthcanal.com)
  • A commonly used stenting procedure to treat plaque build-up in the renal artery appears to offer no significant improvement when added to medication-based therapy, according to results from a National Institutes of Health-funded study. (healthcanal.com)
  • The findings from this study could help change clinical practice by encouraging health care providers to avoid unnecessary stenting procedures when treating renal artery stenosis. (healthcanal.com)
  • According to the study's researchers, between 1996 and 2000, there was a 364 percent jump in renal artery stenting procedures for Medicare beneficiaries. (healthcanal.com)
  • Renal artery stenting for this condition remains a common practice because while several, smaller studies showed negative results, other research has suggested the procedure may help lower blood pressure and stabilize kidney function," said Dr. Christopher Cooper, lead author of the study and chairman of the Department of Medicine at the University of Toledo, Ohio. (healthcanal.com)
  • My renal artery to aortic ratio is within normal limits at 1.24. (healingwell.com)
  • The single donor artery with its aortic patch was anastomosed end-to-side to the external iliac artery using a running 6/0 nylon suture. (urotoday.com)
  • Renal artery embolism (RAE) is an infrequent but significant cause of renal loss in patients suffering either from valvular cardiopathy or from aortic atheromatosis. (uninet.edu)
  • This technique allows for selective visceral and renal perfusion as well as distal aortic perfusion in patients with extensive Type V thoracoabdominal aortic aneurysms. (ctsnet.org)
  • Symptoms of renal artery stenosis include high blood pressure that does not respond to treatment and severe high blood pressure in individuals younger than 30 or greater than 50 years of age. (medicinenet.com)
  • Treatment for renal artery stenosis include medication or surgery. (medicinenet.com)
  • The test is performed by threading a catheter through the main vessel of the pelvis, up to the renal artery that leads into the kidney. (medlineplus.gov)
  • Contrast medium is then injected into the renal artery through the catheter, and images of the vessels of the kidney are taken. (medlineplus.gov)
  • Before an X-ray is taken, your doctor injects a dye into the renal arteries through a long, thin tube (catheter) to outline the arteries and show blood flow more clearly. (mayoclinic.org)
  • When the catheter is guided to the narrowed part of the artery, the balloon is inflated. (loyolamedicine.org)
  • The catheter has a small balloon that inflates to widen the narrowing in the artery. (loyolamedicine.org)
  • We found an early renal artery spasm, which was probably caused by direct manipulation of the catheter. (ahajournals.org)
  • To perform these tests, doctors place a tiny, soft plastic tube called a catheter into the artery or vein, usually in the groin, and inject a dye that makes the blood vessels clearly visible on an x-ray image. (nyp.org)
  • The deflated balloon catheter is inserted through an artery in the groin and guided to the narrowed segment of the artery. (nyp.org)
  • Typically the target renal artery is engaged with a long 4-Fr angiographic catheter (internal mammary, Judkins right-4, etc.) placed through the lumen of a 6-Fr guiding catheter (125 cm multipurpose from the arm, or 55 cm hockey stick or renal curve from the femoral access). (oncologynurseadvisor.com)
  • A catheter is introduced via the femoral artery and advanced into each renal artery under fluoroscopic control. (nice.org.uk)
  • The catheter is connected to a generator which delivers low-power radiofrequency energy in 2-minute applications to each renal artery at 4-6 points along its length, in a spiral pattern. (nice.org.uk)
  • A 4 French cobra 2 catheter was advanced into a sub-segmental artery in the inter-upper polar region supplying a large pseudoaneurysm and AV fistula. (appliedradiology.com)
  • To illustrate non-contrast MRA's ability as a diagnostic tool for renal artery stenosis, Toshiba has announced a multi-center trial to establish the clinical value of non-contrast Renal MRA using Time-SLIP. (news-medical.net)
  • Clinical presentation ?Renal artery aneurysms are usually asymptomatic. (hcplive.com)
  • Renal artery stenosis (RAS) is a frequently encountered problem in clinical practice. (dovepress.com)
  • 4,67-71 ⇓ ⇓ ⇓ ⇓ ⇓ These few existing reports have used differing reporting criteria and study methodology, and they have failed to clarify the clinical appropriateness of different methods of renal artery revascularization. (ahajournals.org)
  • The objective of the present statement is to outline the necessary elements and definitions essential for the uniform reporting of multicenter clinical trials that evaluate renal artery revascularization techniques. (ahajournals.org)
  • Because it is likely that funding and clinical research opportunities for the evaluation of renal revascularization will be limited, it is important that any study protocol be well designed and rigorously conducted. (ahajournals.org)
  • Gasparini M, Hofmann R, Stoller M. Renal artery embolism: clinical features and therapeutic options. (freemd.com)
  • Clinical features of carotid artery dissection include ipsilateral local signs, contralateral ischemic stroke, or both. (ahajournals.org)
  • State the clinical indications for performing ultrasound evaluation of renal artery stenosis. (gcus.com)
  • Anterpreet K Arora, Poonam Verma, Monika Lalit, Anupama Mahajan and Maneesha Sharma- Variant Segmental Renal Arteries in The Right Kidney- Clinical Correlations-A Case Report). (omicsonline.org)
  • The right passes behind the inferior vena cava , the right renal vein , the head of the pancreas , and the descending part of the duodenum . (wikipedia.org)
  • the greater number of these (anterior branches) lie between the renal vein and ureter , the vein being in front, the ureter behind, but one or more branches (posterior branches) are usually situated behind the ureter. (wikipedia.org)
  • It is located above the renal vein. (wikipedia.org)
  • Once the blood has been processed here, it is sent back through the renal vein to the inferior vena cava and to the right side section of the heart. (healthline.com)
  • The right renal vein was anastomosed to the right iliac vein similar to standard renal transplantation technique in the right iliac fossa, and the reconstructed artery was anastomosed to the right external iliac artery in a fashion similar to an IVC patch. (sages.org)
  • To surgically correct the decreased blood flow through the artery, doctors place a bypass graft made of synthetic material or a natural vein taken from another part of the body. (nyp.org)
  • Conventional textbooks of anatomy define the order of hilar structures from above downwards and from anterior to posterior as renal vein, renal artery and pelvis. (omicsonline.org)
  • The venous drainage of each kidney is through one renal vein, which drains the blood from the kidney into the inferior vena cava. (omicsonline.org)
  • A left retroperitoneal approach via the 8th intercostal space was performed and the left common femoral artery and vein were cannulated. (ctsnet.org)
  • On follow up evaluation, he was pain free with normal serum creatinine and a renal duplex ultrasound confirming stenosis-free patency of the renal vessels and good flow to the renal parenchyma. (sages.org)
  • Ultrasound: if a small kidney is due to RAS, it is too late to save substantial renal function. (edren.org)
  • Standard echocardiography and renal ultrasound studies are performed at baseline and repeated every year. (clinicaltrials.gov)
  • Five months later, she presented with renal dysfunction and moderate hydronephrosis on ultrasound. (urotoday.com)
  • Ultrasound Evaluation of Renal Artery Stenosis training video is designed to provide an overview of duplex/color flow evaluation of renal artery stenosis using direct and indirect examination techniques. (gcus.com)
  • Some patients have very severe bilateral stenosis and normal renal function. (medicinenet.com)
  • Left kidney measures 11.1cm, right kidney 11.3cm (normal) Both have normal renal parenchymal echoes and smooth cortical margins. (healingwell.com)
  • The normal renal arteries enter the kidney through its hilum whereas the accessory renal arteries might enter the kidney through the hilum or through the surfaces of the kidney. (pulsus.com)
  • Obstructions (blockages) in the renal arteries, known as renal artery stenoses, can cause poorly controlled high blood pressure, congestive heart failure, and kidney failure. (clevelandclinic.org)
  • For certain people - for instance, those with uncontrolled high blood pressure and a complication such as pulmonary edema or worsening kidney function - a procedure may be recommended to restore blood flow through the renal artery and improve blood flow (perfusion) to the kidney. (mayoclinic.org)
  • Reduced blood flow through the renal artery can hurt kidney function. (wakehealth.edu)
  • It is associated with increased morbidity because patients with severe HTN who have renovascular HTN are at increased risk for renal insufficiency. (medscape.com)
  • Consider alternative screening in Renal Insufficiency (esp. (fpnotebook.com)
  • most often in the renal (kidney) artery , the study. (everydayhealth.com)
  • A physical examination can also reveal other clues that your symptoms are caused by kidney artery problems. (simstat.com)
  • It can also result from blood clots or debris that travel through the bloodstream (emboli) and lodge in the renal artery - blocking the main kidney artery or one of the smaller vessels. (wakehealth.edu)
  • What are the symptoms of renal artery stenosis? (medicinenet.com)
  • In general, renal artery stenosis is not associated with any obvious or specific symptoms. (medicinenet.com)
  • Renal artery stenosis often doesn't cause any signs or symptoms until it's advanced. (mayoclinic.org)
  • Most people with renal artery stenosis have no symptoms. (medicalcityhospital.com)
  • Renal artery stenosis usually has no symptoms. (edren.org)
  • See also the symptoms of Renal Artery Stenosis and Renal Artery Stenosis: Introduction . (rightdiagnosis.com)
  • According to different authors (10), the duration of ischemia is an important factor for recovering renal function, however, successful late revascularization has also been reported (11). (uninet.edu)
  • Most cases of renal artery stenosis result from narrowed kidney arteries. (mayoclinic.org)
  • Most cases of renal artery stenosis are asymptomatic, and the main problem is high blood pressure that cannot be controlled with medication. (wikipedia.org)
  • Moreover, lowering BP in the presence of severe renal stenosis may lead to ischemic renal atrophy. (medscape.com)
  • Persistent or severe high blood pressure is a common symptom of renal artery stenosis. (clevelandclinic.org)
  • In more severe cases, we may recommend surgery to open your arteries and restore blood flow. (wakehealth.edu)
  • Renal artery pseudoaneurysms are rare after blunt abdominal trauma. (appliedradiology.com)
  • Renal artery pseudoaneurysm after blunt abdominal trauma is uncommon but can be diagnosed with standard radiographic techniques. (appliedradiology.com)
  • Dear Murat, That is another alternative for the case like that, however abdominal debranching is major undertaking and still requires reimplantation of celiac, SMA and renal arteries. (ctsnet.org)
  • Novel, vessel anatomy adjusting drug-coated balloon-Preclinical evaluation in peripheral porcine arteries. (bioportfolio.com)
  • Hyponatremic-Hypertensive Syndrome: Think of Unilateral Renal Artery Stenosis. (biomedsearch.com)
  • It is mostly encountered in adults with unilateral renal artery stenosis. (biomedsearch.com)
  • Segmental vessels then penetrate the renal parenchyma to become lobar, interlobar, arcuate, or interlobular arteries or afferent arterioles, then finally reach the capillaries and glomeruli. (medscape.com)
  • Further it divides into segmental arteries to supply the respective segments of the kidney being themselves the end arteries. (omicsonline.org)
  • The more inferior accessory renal artery was initially selected and revealed no evidence of active extravasation, pseudoaneurysm, or arteriovenous (AV) fistula. (appliedradiology.com)
  • Accessory renal artery, which was also supplying supra renal gland and gonad through inferior suprarenal and gonadal artery respectively. (pulsus.com)
  • Renal artery stenosis, after renal denervation, with spontaneous resolution two year follow-up from procedure. (ahajournals.org)
  • 2.4.2 The following serious adverse events (requiring admission to hospital) were reported in 1 patient treated by renal artery denervation in the randomised controlled trial of 100 patients: nausea, oedema, and a hypotensive episode requiring a reduction in antihypertensive medication (timing of events not stated). (nice.org.uk)
  • It considered sympathetic denervation of the renal artery to be a promising procedure, which might offer benefit to many patients, but a larger evidence base of well-designed trials is required. (nice.org.uk)
  • Since fibrinolityc therapy was successfully introduced by Halpern and cols (16) a lot of reports have been published using intra-arterial fibrinolysis as a therapy of choice, specially when the embolism takes place at intra-renal arteries. (uninet.edu)
  • Nonetheless, the correction of renal stenosis is considered the treatment of choice whenever feasible. (medscape.com)
  • Treatment for renal artery stenosis may involve lifestyle changes, medication or a procedure. (mayoclinic.org)
  • Medication - Often the first treatment for renal artery stenosis. (loyolamedicine.org)
  • The majority of renal artery aneurysms are small and do not require treatment, but larger aneurysms, some specific types of aneurysms, and those in women of childbearing age typically require treatment. (wisegeek.com)
  • If there is significant stenosis and you are healthy, repairing the renal artery may be considered before medical treatment. (medicalcityhospital.com)
  • Nicholas GG, DeMuth WE Jr. Treatment of renal artery embolism. (freemd.com)
  • To explore the therapeutic efficacy and outcome of superselective transcatheter renal artery embolization for the treatment of hemorrhage from non-iatrogenic blunt renal trauma (BRT). (dovepress.com)
  • Superselective transcatheter renal artery embolization is an effective minimally invasive therapy for the treatment of BRT hemorrhage. (dovepress.com)
  • Dworkin spoke with David Orenstein, Brown's science news officer, about the trial's results and what they mean for the future of renal artery stenosis treatment. (healthcanal.com)