Aorta: The main trunk of the systemic arteries.Aorta, Thoracic: The portion of the descending aorta proceeding from the arch of the aorta and extending to the DIAPHRAGM, eventually connecting to the ABDOMINAL AORTA.Aorta, Abdominal: The aorta from the DIAPHRAGM to the bifurcation into the right and left common iliac arteries.Aortic Diseases: Pathological processes involving any part of the AORTA.Aortic Coarctation: 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.Aortic Aneurysm: An abnormal balloon- or sac-like dilatation in the wall of AORTA.Aortography: Radiographic visualization of the aorta and its branches by injection of contrast media, using percutaneous puncture or catheterization procedures.Muscle, Smooth, Vascular: The nonstriated involuntary muscle tissue of blood vessels.Aortic Aneurysm, Thoracic: 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.Arteriosclerosis: 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.Aneurysm, Dissecting: 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.Endothelium, Vascular: Single pavement layer of cells which line the luminal surface of the entire vascular system and regulate the transport of macromolecules and blood components.Blood Vessel Prosthesis Implantation: Surgical insertion of BLOOD VESSEL PROSTHESES to repair injured or diseased blood vessels.Rabbits: 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.Aortic Rupture: The tearing or bursting of the wall along any portion of the AORTA, such as thoracic or abdominal. It may result from the rupture of an aneurysm or it may be due to TRAUMA.Aortic Aneurysm, Abdominal: 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.Blood Vessel Prosthesis: Device constructed of either synthetic or biological material that is used for the repair of injured or diseased blood vessels.Vasodilation: The physiological widening of BLOOD VESSELS by relaxing the underlying VASCULAR SMOOTH MUSCLE.Vasoconstriction: The physiological narrowing of BLOOD VESSELS by contraction of the VASCULAR SMOOTH MUSCLE.Phenylephrine: An alpha-1 adrenergic agonist used as a mydriatic, nasal decongestant, and cardiotonic agent.Vasoconstrictor Agents: Drugs used to cause constriction of the blood vessels.Aortitis: Inflammation of the wall of the AORTA.Aneurysm, Infected: Aneurysm due to growth of microorganisms in the arterial wall, or infection arising within preexisting arteriosclerotic aneurysms.Tomography, X-Ray Computed: Tomography using x-ray transmission and a computer algorithm to reconstruct the image.Vasodilator Agents: Drugs used to cause dilation of the blood vessels.ElastinAtherosclerosis: A thickening and loss of elasticity of the walls of ARTERIES that occurs with formation of ATHEROSCLEROTIC PLAQUES within the ARTERIAL INTIMA.Polyethylene Terephthalates: Polyester polymers formed from terephthalic acid or its esters and ethylene glycol. They can be formed into tapes, films or pulled into fibers that are pressed into meshes or woven into fabrics.Arteries: The vessels carrying blood away from the heart.Rats, Wistar: A strain of albino rat developed at the Wistar Institute that has spread widely at other institutions. This has markedly diluted the original strain.Muscle Relaxation: That phase of a muscle twitch during which a muscle returns to a resting position.Muscle Contraction: 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.Blood Pressure: PRESSURE of the BLOOD on the ARTERIES and other BLOOD VESSELS.Dilatation, Pathologic: The condition of an anatomical structure's being dilated beyond normal dimensions.Marfan Syndrome: An autosomal dominant disorder of CONNECTIVE TISSUE with abnormal features in the heart, the eye, and the skeleton. Cardiovascular manifestations include MITRAL VALVE PROLAPSE, dilation of the AORTA, and aortic dissection. Other features include lens displacement (ectopia lentis), disproportioned long limbs and enlarged DURA MATER (dural ectasia). Marfan syndrome is associated with mutations in the gene encoding fibrillin, a major element of extracellular microfibrils of connective tissue.Diet, Atherogenic: A diet that contributes to the development and acceleration of ATHEROGENESIS.Acetylcholine: 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.Venae Cavae: The inferior and superior venae cavae.Nitric Oxide: 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.Rats, Inbred WKY: A strain of Rattus norvegicus used as a normotensive control for the spontaneous hypertensive rats (SHR).Rats, Sprague-Dawley: 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.Aneurysm, False: 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.Iliac Artery: Either of two large arteries originating from the abdominal aorta; they supply blood to the pelvis, abdominal wall and legs.Rats, Inbred SHR: A strain of Rattus norvegicus with elevated blood pressure used as a model for studying hypertension and stroke.Hypertension: 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.Time Factors: Elements of limited time intervals, contributing to particular results or situations.Aortic Valve: The valve between the left ventricle and the ascending aorta which prevents backflow into the left ventricle.Cholesterol, Dietary: Cholesterol present in food, especially in animal products.Dose-Response Relationship, Drug: The relationship between the dose of an administered drug and the response of the organism to the drug.Norepinephrine: 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.Apolipoproteins E: A class of protein components which can be found in several lipoproteins including HIGH-DENSITY LIPOPROTEINS; VERY-LOW-DENSITY LIPOPROTEINS; and CHYLOMICRONS. Synthesized in most organs, Apo E is important in the global transport of lipids and cholesterol throughout the body. Apo E is also a ligand for LDL receptors (RECEPTORS, LDL) that mediates the binding, internalization, and catabolism of lipoprotein particles in cells. There are several allelic isoforms (such as E2, E3, and E4). Deficiency or defects in Apo E are causes of HYPERLIPOPROTEINEMIA TYPE III.Anastomosis, Surgical: 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.Nitroprusside: 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.Disease Models, Animal: 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.Nitric Oxide Synthase Type III: A CALCIUM-dependent, constitutively-expressed form of nitric oxide synthase found primarily in ENDOTHELIAL CELLS.Endothelium: A layer of epithelium that lines the heart, blood vessels (ENDOTHELIUM, VASCULAR), lymph vessels (ENDOTHELIUM, LYMPHATIC), and the serous cavities of the body.Catheterization: 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.Echocardiography, Transesophageal: Ultrasonic recording of the size, motion, and composition of the heart and surrounding tissues using a transducer placed in the esophagus.Stents: Devices that provide support for tubular structures that are being anastomosed or for body cavities during skin grafting.Takayasu Arteritis: 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.Nitric Oxide Synthase: An NADPH-dependent enzyme that catalyzes the conversion of L-ARGININE and OXYGEN to produce CITRULLINE and NITRIC OXIDE.Pulmonary Artery: The short wide vessel arising from the conus arteriosus of the right ventricle and conveying unaerated blood to the lungs.Elasticity: Resistance and recovery from distortion of shape.Subclavian Artery: 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.Angiotensin II: 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.Constriction: The act of constricting.Potassium Chloride: A white crystal or crystalline powder used in BUFFERS; FERTILIZERS; and EXPLOSIVES. It can be used to replenish ELECTROLYTES and restore WATER-ELECTROLYTE BALANCE in treating HYPOKALEMIA.Cyclic GMP: Guanosine cyclic 3',5'-(hydrogen phosphate). A guanine nucleotide containing one phosphate group which is esterified to the sugar moiety in both the 3'- and 5'-positions. It is a cellular regulatory agent and has been described as a second messenger. Its levels increase in response to a variety of hormones, including acetylcholine, insulin, and oxytocin and it has been found to activate specific protein kinases. (From Merck Index, 11th ed)Mesenteric Arteries: Arteries which arise from the abdominal aorta and distribute to most of the intestines.Elastic Tissue: Connective tissue comprised chiefly of elastic fibers. Elastic fibers have two components: ELASTIN and MICROFIBRILS.Brachiocephalic Trunk: The first and largest artery branching from the aortic arch. It distributes blood to the right side of the head and neck and to the right arm.Treatment Outcome: 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.Mice, Inbred C57BLCalcinosis: Pathologic deposition of calcium salts in tissues.Femoral Artery: The main artery of the thigh, a continuation of the external iliac artery.NG-Nitroarginine Methyl Ester: A non-selective inhibitor of nitric oxide synthase. It has been used experimentally to induce hypertension.Prosthesis Design: The plan and delineation of prostheses in general or a specific prosthesis.Vascular Surgical Procedures: Operative procedures for the treatment of vascular disorders.Aortic Valve Insufficiency: Pathological condition characterized by the backflow of blood from the ASCENDING AORTA back into the LEFT VENTRICLE, leading to regurgitation. It is caused by diseases of the AORTIC VALVE or its surrounding tissue (aortic root).Cholesterol: The principal sterol of all higher animals, distributed in body tissues, especially the brain and spinal cord, and in animal fats and oils.Blood Vessels: Any of the tubular vessels conveying the blood (arteries, arterioles, capillaries, venules, and veins).Cells, Cultured: Cells propagated in vitro in special media conducive to their growth. Cultured cells are used to study developmental, morphologic, metabolic, physiologic, and genetic processes, among others.RNA, Messenger: RNA sequences that serve as templates for protein synthesis. Bacterial mRNAs are generally primary transcripts in that they do not require post-transcriptional processing. Eukaryotic mRNA is synthesized in the nucleus and must be exported to the cytoplasm for translation. Most eukaryotic mRNAs have a sequence of polyadenylic acid at the 3' end, referred to as the poly(A) tail. The function of this tail is not known for certain, but it may play a role in the export of mature mRNA from the nucleus as well as in helping stabilize some mRNA molecules by retarding their degradation in the cytoplasm.Aortic Arch Syndromes: Conditions resulting from abnormalities in the arteries branching from the ASCENDING AORTA, the curved portion of the aorta. These syndromes are results of occlusion or abnormal blood flow to the head-neck or arm region leading to neurological defects and weakness in an arm. These syndromes are associated with vascular malformations; ATHEROSCLEROSIS; TRAUMA; and blood clots.Methylene Blue: A compound consisting of dark green crystals or crystalline powder, having a bronze-like luster. Solutions in water or alcohol have a deep blue color. Methylene blue is used as a bacteriologic stain and as an indicator. It inhibits GUANYLATE CYCLASE, and has been used to treat cyanide poisoning and to lower levels of METHEMOGLOBIN.Mice, Knockout: Strains of mice in which certain GENES of their GENOMES have been disrupted, or "knocked-out". To produce knockouts, using RECOMBINANT DNA technology, the normal DNA sequence of the gene being studied is altered to prevent synthesis of a normal gene product. Cloned cells in which this DNA alteration is successful are then injected into mouse EMBRYOS to produce chimeric mice. The chimeric mice are then bred to yield a strain in which all the cells of the mouse contain the disrupted gene. Knockout mice are used as EXPERIMENTAL ANIMAL MODELS for diseases (DISEASE MODELS, ANIMAL) and to clarify the functions of the genes.Carotid Arteries: 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.Renal Artery: A branch of the abdominal aorta which supplies the kidneys, adrenal glands and ureters.Blood Flow Velocity: A value equal to the total volume flow divided by the cross-sectional area of the vascular bed.Models, Cardiovascular: Theoretical representations that simulate the behavior or activity of the cardiovascular system, processes, or phenomena; includes the use of mathematical equations, computers and other electronic equipment.Hemodynamics: The movement and the forces involved in the movement of the blood through the CARDIOVASCULAR SYSTEM.Rats, Inbred Strains: Genetically identical individuals developed from brother and sister matings which have been carried out for twenty or more generations or by parent x offspring matings carried out with certain restrictions. This also includes animals with a long history of closed colony breeding.Hypercholesterolemia: A condition with abnormally high levels of CHOLESTEROL in the blood. It is defined as a cholesterol value exceeding the 95th percentile for the population.Tunica Intima: The innermost layer of an artery or vein, made up of one layer of endothelial cells and supported by an internal elastic lamina.15-Hydroxy-11 alpha,9 alpha-(epoxymethano)prosta-5,13-dienoic Acid: 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)Calcium: A basic element found in nearly all organized tissues. It is a member of the alkaline earth family of metals with the atomic symbol Ca, atomic number 20, and atomic weight 40. Calcium is the most abundant mineral in the body and combines with phosphorus to form calcium phosphate in the bones and teeth. It is essential for the normal functioning of nerves and muscles and plays a role in blood coagulation (as factor IV) and in many enzymatic processes.Aortic Valve Stenosis: A pathological constriction that can occur above (supravalvular stenosis), below (subvalvular stenosis), or at the AORTIC VALVE. It is characterized by restricted outflow from the LEFT VENTRICLE into the AORTA.Heart Defects, Congenital: Developmental abnormalities involving structures of the heart. These defects are present at birth but may be discovered later in life.Celiac Artery: The arterial trunk that arises from the abdominal aorta and after a short course divides into the left gastric, common hepatic and splenic arteries.Myocytes, Smooth Muscle: Non-striated, elongated, spindle-shaped cells found lining the digestive tract, uterus, and blood vessels. They are derived from specialized myoblasts (MYOBLASTS, SMOOTH MUSCLE).Indomethacin: 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.Swine: 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).Angiography: Radiography of blood vessels after injection of a contrast medium.Ulcer: A lesion on the surface of the skin or a mucous surface, produced by the sloughing of inflammatory necrotic tissue.Paraplegia: Severe or complete loss of motor function in the lower extremities and lower portions of the trunk. This condition is most often associated with SPINAL CORD DISEASES, although BRAIN DISEASES; PERIPHERAL NERVOUS SYSTEM DISEASES; NEUROMUSCULAR DISEASES; and MUSCULAR DISEASES may also cause bilateral leg weakness.Pulsatile Flow: Rhythmic, intermittent propagation of a fluid through a BLOOD VESSEL or piping system, in contrast to constant, smooth propagation, which produces laminar flow.Ductus Arteriosus: A fetal blood vessel connecting the pulmonary artery with the descending aorta.Circulatory Arrest, Deep Hypothermia Induced: A technique to arrest the flow of blood by lowering BODY TEMPERATURE to about 20 degrees Centigrade, usually achieved by infusing chilled perfusate. The technique provides a bloodless surgical field for complex surgeries.Endovascular Procedures: 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.Reoperation: A repeat operation for the same condition in the same patient due to disease progression or recurrence, or as followup to failed previous surgery.Spinal Cord Ischemia: Reduced blood flow to the spinal cord which is supplied by the anterior spinal artery and the paired posterior spinal arteries. This condition may be associated with ARTERIOSCLEROSIS, trauma, emboli, diseases of the aorta, and other disorders. Prolonged ischemia may lead to INFARCTION of spinal cord tissue.Thoracotomy: Surgical incision into the chest wall.Desmosine: A rare amino acid found in elastin, formed by condensation of four molecules of lysine into a pyridinium ring.Dogs: 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)Stress, Mechanical: A purely physical condition which exists within any material because of strain or deformation by external forces or by non-uniform thermal expansion; expressed quantitatively in units of force per unit area.Enzyme Inhibitors: Compounds or agents that combine with an enzyme in such a manner as to prevent the normal substrate-enzyme combination and the catalytic reaction.Receptors, Thromboxane: Cell surface proteins that bind THROMBOXANES with high affinity and trigger intracellular changes influencing the behavior of cells. Some thromboxane receptors act via the inositol phosphate and diacylglycerol second messenger systems.Magnetic Resonance Angiography: 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.Coronary Vessels: The veins and arteries of the HEART.Prazosin: A selective adrenergic alpha-1 antagonist used in the treatment of HEART FAILURE; HYPERTENSION; PHEOCHROMOCYTOMA; RAYNAUD DISEASE; PROSTATIC HYPERTROPHY; and URINARY RETENTION.Tunica Media: The middle layer of blood vessel walls, composed principally of thin, cylindrical, smooth muscle cells and elastic tissue. It accounts for the bulk of the wall of most arteries. The smooth muscle cells are arranged in circular layers around the vessel, and the thickness of the coat varies with the size of the vessel.Sinus of Valsalva: The dilatation of the aortic wall behind each of the cusps of the aortic valve.Cardiopulmonary Bypass: Diversion of the flow of blood from the entrance of the right atrium directly to the aorta (or femoral artery) via an oxygenator thus bypassing both the heart and lungs.Arterial Occlusive Diseases: 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.Mesenteric Artery, Superior: 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.Regional Blood Flow: The flow of BLOOD through or around an organ or region of the body.Receptors, Adrenergic, alpha-1: A subclass of alpha-adrenergic receptors that mediate contraction of SMOOTH MUSCLE in a variety of tissues such as ARTERIOLES; VEINS; and the UTERUS. They are usually found on postsynaptic membranes and signal through GQ-G11 G-PROTEINS.Desoxycorticosterone: A steroid metabolite that is the 11-deoxy derivative of CORTICOSTERONE and the 21-hydroxy derivative of PROGESTERONE.Adrenergic alpha-Antagonists: Drugs that bind to but do not activate alpha-adrenergic receptors thereby blocking the actions of endogenous or exogenous adrenergic agonists. Adrenergic alpha-antagonists are used in the treatment of hypertension, vasospasm, peripheral vascular disease, shock, and pheochromocytoma.Immunohistochemistry: Histochemical localization of immunoreactive substances using labeled antibodies as reagents.Epoprostenol: A prostaglandin that is a powerful vasodilator and inhibits platelet aggregation. It is biosynthesized enzymatically from PROSTAGLANDIN ENDOPEROXIDES in human vascular tissue. The sodium salt has been also used to treat primary pulmonary hypertension (HYPERTENSION, PULMONARY).Vena Cava, Inferior: The venous trunk which receives blood from the lower extremities and from the pelvic and abdominal organs.Nitroglycerin: A volatile vasodilator which relieves ANGINA PECTORIS by stimulating GUANYLATE CYCLASE and lowering cytosolic calcium. It is also sometimes used for TOCOLYSIS and explosives.Postoperative Complications: 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.Nitroarginine: An inhibitor of nitric oxide synthetase which has been shown to prevent glutamate toxicity. Nitroarginine has been experimentally tested for its ability to prevent ammonia toxicity and ammonia-induced alterations in brain energy and ammonia metabolites. (Neurochem Res 1995:200(4):451-6)Czechoslovakia: Created as a republic in 1918 by Czechs and Slovaks from territories formerly part of the Austro-Hungarian Empire. The country split into the Czech Republic and Slovakia 1 January 1993.

Investigation of distal aortic compliance and vasodilator responsiveness in heart failure due to proximal aortic stenosis in the guinea pig. (1/1846)

Hypotension and syncope are recognized features of chronic aortic stenosis. This study examined vasomotor responses and dynamic compliance in isolated abdominal aortae after chronic constriction of the ascending aorta. Guinea pigs underwent constriction of the ascending aorta or sham operation. Sections of descending aorta were removed for studies of contractile performance and compliance. Dynamic compliance was measured using a feedback-controlled pulsatile pressure system at frequencies of 0.5, 1.5 and 2.5 Hz and mean pressures from 40 to 100 mmHg. Chronic (149+/-6 days) aortic constriction resulted in significant increases in organ weight/body weight ratios for left ventricle (58%), right ventricle (100%) and lung (61%). The presence of heart failure was indicated by increased lung weights, left ventricular end-diastolic pressure and systemic vascular resistance, reduced cardiac output and increased levels of plasma atrial natriuretic peptide (166%), adrenaline (x20), noradrenaline (106%) and dopamine (x3). Aortic rings showed similar constrictor responses to phenylephrine and angiotensin II, but maximal vasodilator responses to acetylcholine and isoprenaline were significantly increased (144% and 48% respectively). Dilator responses to sodium nitroprusside, forskolin and cromokalim were unchanged. Compliance of all vessels decreased with increasing pulsatile frequency and to a lesser extent with increased mean pressure, but were similar in aortic-constricted and control groups. Chronic constriction of the ascending aorta resulted in heart failure and increased vasodilator responses to acetylcholine and isoprenaline in the distal aorta while dynamic compliance was unchanged. We hypothesize that increased endothelium-mediated vasodilatation may contribute to hypotension and syncope in patients with left ventricular outflow obstruction.  (+info)

Development of atherosclerotic lesions in cholesterol-loaded rabbits. (2/1846)

To examine both of the target vessels and the optimal time of their endothelial denudation to study vascular restenosis after balloon injury in cholesterol-loaded rabbits, we made 36 atherosclerotic rabbits by feeding a hypercholesterol diet, and histologically examined the onset time and the development of atherosclerosis. Atheromatous changes were observed first after the 5th week in the thoracic aorta from the start of the diet, and then extended to the abdominal aorta, coronary artery with time. The atherosclerotic lesions in the thoracic aorta and the proximal portion of the coronary artery showed high-grade concentric intimal thickening with luminal stenosis. The abdominal aortic lesion mildly progressed. In the renal, carotid and femoral arteries, in contrast, slight atheroscleromatous changes developed during the diet period. These results suggest that the thoracic and abdominal aortas and the coronary artery would be suitable as target vessels to study vascular restenosis after balloon injury, and the endothelial denudation of these vessels should be performed between the 8th and 15th week in this diet protocol for an accurate analysis.  (+info)

Regression of atherosclerosis: role of nitric oxide and apoptosis. (3/1846)

BACKGROUND: We have recently found that administration of L-arginine to hypercholesterolemic rabbits induces regression of preexisting lesions. Others have previously shown that activation of the L-arginine/nitric oxide (NO) synthase pathway can induce apoptosis of vascular cells in vitro. Accordingly, the current study was designed to determine if dietary supplementation of L-arginine induces apoptosis of intimal lesions and if this effect is mediated through the NO synthase pathway. METHODS AND RESULTS: Male New Zealand White rabbits were fed a 0.5% cholesterol diet for 10 weeks and subsequently placed on 2.5% L-arginine HCl in the drinking water, and the cholesterol diet was continued for 2 weeks, at which time the aortas were harvested for histological studies. L-Arginine treatment increased the number of apoptotic cells (largely macrophages) in the intimal lesions by 3-fold (11.9+/-3.9 vs 3.9+/-1. 4 apoptotic cells/mm2, P<0.01). In subsequent studies, aortas were harvested for ex vivo studies. Aortic segments were incubated in cell culture medium for 4 to 24 hours with modulators of the NO synthase pathway. The tissues were then collected for histological studies and the conditioned medium collected for measurement of nitrogen oxides by chemiluminescence. Addition of sodium nitroprusside (10(-5) mol/L) to the medium caused a time-dependent increase in apoptosis of vascular cells (largely macrophages) in the intimal lesion. L-Arginine (10(-3) mol/L) had an identical effect on apoptosis, which was associated with an increase in nitrogen oxides released into the medium. These effects were not mimicked by D-arginine, and they were antagonized by the NO synthase inhibitor L-nitro-arginine (10(-4) mol/L). The effect of L-arginine was not influenced by an antagonist of cGMP-dependent protein kinase, nor was the effect mimicked by the agonist of protein kinase G or 8-BR cGMP. CONCLUSIONS: These results indicate that supplemental L-arginine induces apoptosis of macrophages in intimal lesions by its metabolism to NO, which acts through a cGMP-independent pathway. These studies are consistent with our previous observation that supplementation of dietary arginine induces regression of atheroma in this animal model. These studies provide a rationale for further investigation of the therapeutic potential of manipulating the NO synthase pathway in atherosclerosis.  (+info)

The value of late computed tomographic scanning in identification of vascular abnormalities after abdominal aortic aneurysm repair. (4/1846)

PURPOSE: The purpose of this study was to determine the prevalence of late arterial abnormalities after aortic aneurysm repair and thus to suggest a routine for postoperative radiologic follow-up examination and to establish reference criteria for endovascular repair. METHODS: Computed tomographic (CT) scan follow-up examination was obtained at 8 to 9 years after abdominal aortic aneurysm (AAA) repair on a cohort of patients enrolled in the Canadian Aneurysm Study. The original registry consisted of 680 patients who underwent repair of nonruptured AAA. When the request for CT scan follow-up examination was sent in 1994, 251 patients were alive and potentially available for CT scan follow-up examination and 94 patients agreed to undergo abdominal and thoracic CT scanning procedures. Each scan was interpreted independently by two vascular radiologists. RESULTS: For analysis, the aorta was divided into five defined segments and an aneurysm was defined as a more than 50% enlargement from the expected normal value as defined in the reporting standards for aneurysms. With this strict definition, 64.9% of patients had aneurysmal dilatation and the abnormality was considered as a possible indication for surgical repair in 13.8%. Of the 39 patients who underwent initial repair with a tube graft, 12 (30.8%) were found to have an iliac aneurysm and six of these aneurysms (15.4%) were of possible surgical significance. Graft dilatation was observed from the time of operation (median graft size of 18 mm) to a median size of 22 mm as measured by means of CT scanning at follow-up examination. Fluid or thrombus was seen around the graft in 28% of the cases, and bowel was believed to be intimately associated with the graft in 7%. CONCLUSION: Late follow-up CT scans after AAA repair often show vascular abnormalities. Most of these abnormalities are not clinically significant, but, in 13.8% of patients, the thoracic or abdominal aortic segment was aneurysmal and, in 15.4% of patients who underwent tube graft placement, one of the iliac arteries was significantly abnormal to warrant consideration for surgical repair. On the basis of these findings, a routine CT follow-up examination after 5 years is recommended. This study provides a population-based study for comparison with the results of endovascular repair.  (+info)

Suppression of experimental abdominal aortic aneurysms by systemic treatment with a hydroxamate-based matrix metalloproteinase inhibitor (RS 132908). (5/1846)

BACKGROUND: Abdominal aortic aneurysms (AAAs) are associated with chronic inflammation, disruption of medial elastin, and increased local production of elastolytic matrix metalloproteinases (MMPs). The purpose of this study was to investigate how treatment with a hydroxamate-based MMP antagonist (RS 132908) might affect the development of experimental AAAs. METHODS: Male Wistar rats underwent intraluminal perfusion of the abdominal aorta with 50 units of porcine pancreatic elastase followed by treatment for 14 days with RS 132908 (100 mg/kg/day subcutaneously; n = 8) or with vehicle alone (n = 6). The external aortic diameter (AD) was measured in millimeters before elastase perfusion and at death, with AAA defined as an increase in AD (DeltaAD) of at least 100%. Aortic wall elastin and collagen concentrations were measured with assays for desmosine and hydroxyproline, and fixed aortic tissues were examined by light microscopy. RESULTS: AAAs developed in all vehicle-treated rats, with a mean AD (+/- SE) that increased from 1.60 +/- 0.03 mm before perfusion to 5.98 +/- 1.02 mm on day 14 (DeltaAD = 276.4 +/- 67.7%). AAAs developed in only five of eight animals (62.5%) after MMP inhibition, with a mean AD that increased from 1.56 +/- 0.05 mm to 3.59 +/- 0.34 mm (DeltaAD = 128.1 +/- 18.7%; P <.05, vs vehicle). The overall inhibition of aortic dilatation attributable to RS 132908 was 53.6 +/- 6.8%. Aortic wall desmosine fell by 85.4% in the vehicle-treated rats (1210.6 +/- 87.8 pmol/sample to 176.7 +/- 33.4 pmol/sample; P <.05) but only by 65.6% in the animals treated with RS 312908 (416.2 +/- 120.5 pmol/sample). In contrast, hydroxyproline was not significantly affected by either elastase perfusion or drug treatment. Microscopic examination revealed the preservation of pericellular elastin and a greater degree of fibrocollagenous wall thickening after MMP inhibition, with no detectable difference in the extent of inflammation. CONCLUSIONS: Systemic MMP inhibition suppresses aneurysmal dilatation in the elastase-induced rodent model of AAA. Consistent with its direct inhibitory effect on various MMPs, RS 132908 promotes the preservation of aortic elastin and appears to enhance a profibrotic response within the aortic wall. Hydroxamate-based MMP antagonists may therefore be useful in the development of pharmacologic approaches to the suppression of AAAs.  (+info)

Experimental assessment of proximal stent-graft (InterVascular) fixation in human cadaveric infrarenal aortas. (6/1846)

OBJECTIVES: This paper investigates the radial deformation load of an aortic endoluminal prosthesis and determines the longitudinal load required to cause migration in a human cadaveric aorta of the endoprosthesis. DESIGN AND METHODS: The endovascular prosthesis under investigation was a 24 mm diameter, nitinol, self-expanding aortoaortic device (InterVascular, Clearwater, Florida, U.S.A.). Initially, a motorised digital force gauge developed an incremental load which was applied to the ends of five stent-grafts, to a maximum of 10 mm (42%) compression. Secondly, using a simple bench model, each ends of four stent-grafts were deployed into 10 cadaveric experimental aneurysm necks and a longitudinal load applied to effect distraction. RESULTS: Increasing load produced increasing percentage deformation of the stent-grafts. The mean longitudinal distraction load for an aneurysm neck of 20 mm was 409 g (200-480 g), for 15 mm was 277 g (130-410 g) and for 10 mm was 218 g (130-340 g). The aneurysm diameter and aortic calcification had p values of 0.002 and 0.047, respectively, while the p value for aneurysm neck length was less than 0.00001. CONCLUSIONS: These results suggest that there is a theoretical advantage of oversizing an aortic prosthesis and that sufficient anchorage is achieved in an aortic neck of 10 mm to prevent migration when fully deployed.  (+info)

Expression of interleukin-10 in advanced human atherosclerotic plaques: relation to inducible nitric oxide synthase expression and cell death. (7/1846)

Inflammation is a major feature of human atherosclerosis and is central to development and progression of the disease. A variety of proinflammatory cytokines are expressed in the atherosclerotic plaque and may modulate extracellular matrix remodeling, cell proliferation, and cell death. Little is known, however, about the expression and potential role of anti-inflammatory cytokines in human atherosclerosis. Interleukin-10 (IL-10) is a major anti-inflammatory cytokine whose expression and potential effects in advanced human atherosclerotic plaques have not been evaluated. We studied 21 advanced human atherosclerotic plaques. IL-10 expression was analyzed by use of reverse transcription-polymerase chain reaction and immunohistochemical techniques. Inducible nitric oxide synthase expression was assessed by using immunohistochemistry, and cell death was determined by use of the TUNEL method. Reverse transcription-polymerase chain reaction identified IL-10 mRNA in 12 of 17 atherosclerotic plaques. Immunohistochemical staining of serial sections and double staining identified immunoreactive IL-10 mainly in macrophages, as well as in smooth muscle cells. Consistent with its anti-inflammatory properties, high levels of IL-10 expression were associated with significant decrease in inducible nitric oxide synthase expression (P<0.0001) and cell death (P<0. 0001). Hence, IL-10, a potent anti-inflammatory cytokine, is expressed in a substantial number of advanced human atherosclerotic plaques and might contribute to the modulation of the local inflammatory response and protect from excessive cell death in the plaque.  (+info)

Rat sarcoma model supports both "soil seed" and "mechanical" theories of metastatic spread. (8/1846)

Following injection into the portal venous or vena caval systems, tumour cells are held up almost exclusively in the liver or lung respectively, and subsequent outgrowth of tumour only occurs in these organs. Following systemic arterial injection, cells are distributed, and subsequently grow, in a variety of organs. However, the adrenal gland supports tumour growth from much fewer cells than the lung, and this is partly due to the fact the rate of tumour cell loss in the initial 48 h is very high in the latter compared to the former organ.  (+info)

TY - JOUR. T1 - Age dependency of the biaxial biomechanical behavior of human abdominal aorta. AU - Vande Geest, Jonathan P. AU - Sacks, Michael S.. AU - Vorp, David A.. PY - 2004/12. Y1 - 2004/12. N2 - Background: The biomechanical behavior of the human abdominal aorta has been studied with great interest primarily due to its propensity to develop such maladies as atherosclerotic occlusive disease, dissections, and aneurysms. The purpose of this study was to investigate the age-related biaxial biomechanical behavior of human infrarenal aortic tissue. Methods of Approach: A total of 18 samples (13 autopsy, 5 organ donor) were harvested from patients in each of three age groups: Group 1 (,30 years old, n =5), Group 2 (between 30 and 60 years old, n =7), and Group 3 (,60 years old, n =6). Each specimen was tested biaxially using a tension-controlled protocol which spanned a large portion of the strain plane. Response functions fit to experimental data were used as a tool to guide the appropriate ...
OBJECTIVE: To apply a new non-invasive method for quantification of in vivo wall shear stress (WSS) by magnetic resonance (MR) FAcE velocity mapping and measure WSS in the human abdominal aorta. DESIGN: Prospective, open study. MATERIAL: Six voluntee
PubMed journal article Age-related increase in wall stress of the human abdominal aorta: an in vivo stud were found in PRIME PubMed. Download Prime PubMed App to iPhone or iPad.
BACKGROUND: Peripheral arterial disease and vascular calcifications contribute significantly to the outcome of dialysis patients. The aim of this study was to evaluate the prognostic role of severity of abdominal aortic calcifications and peripheral arterial disease on outcome of peritoneal dialysis (PD) patients using methods easily available in everyday clinical practice.. METHODS: We enrolled 249 PD patients (mean age 61 years, 67% male) in this prospective, observational, multicenter study from 2009 to 2013. The abdominal aortic calcification score (AACS) was assessed using lateral lumbar X ray, and the ankle-brachial index (ABI) using a Doppler device.. RESULTS: The median AACS was 11 (range 0 - 24). In 58% of the patients, all 4 segments of the abdominal aorta showed deposits, while 19% of patients had no visible deposits (AACS 0). Ankle-brachial index was normal in 49%, low (, 0.9) in 17%, and high (, 1.3) in 34% of patients. Altogether 91 patients (37%) died during the median follow-up ...
TY - JOUR. T1 - Numerical analyses of the interrelation between extracellular smooth muscle orientation and intracellular filament overlap in the human abdominal aorta. AU - Haspinger, Daniel Ch. AU - Murtada, Sae Il. AU - Niestrawska, Justyna A.. AU - Holzapfel, Gerhard A.. PY - 2018/12/1. Y1 - 2018/12/1. N2 - Smooth muscle cells are one of the functional constituents in the human abdominal aorta, located in the medial layer, forming two helices similar to collagen fibers. During development, angiogenesis and vascular remodeling, smooth muscle cells experience changes in their orientation and a reorganization of their intracellular filament structure. In order to study the so far not so well-known interrelation between smooth muscle orientation and the intracellular filament structure in the human abdominal aorta a recently proposed mechanochemical model is modified. Two families of muscle fibers are introduced with a non-symmetric filament overlap behavior, and the model is implemented into a ...
Title: Propofol and Systemic Inflammatory Response in Abdominal Aortic Surgery. VOLUME: 5 ISSUE: 2. Author(s):Jose M. Rodriguez-Lopez and Francisco S. Lozano. Affiliation:Servicio de Anestesiologia,Hospital Universitario de Salamanca, Paseo de San Vicente, 58-182, 37007,Salamanca, Spain.. Keywords:Propofol, Systemic inflammatory response, Aortic surgery, Aortic cross-clamping. Abstract: Abdominal aortic surgery is relatively common associated with considerable postoperative morbidity and mortality. The aortic cross-clamping for the implantation of a vascular prosthetic graft induces a systemic inflammatory response (SIR) because of an ischemia-reperfusion (IR) injury. In our experimental models we have reported that propofol anesthesia, compared with sevoflurane, after IR modulates SIR and this effect might result in renal protection. ...
1. Vande Geest JP, Di Martino ES, Vorp DA*. "An Analysis of the Complete Strain Field within FlexercellTM Membranes", Journal of Biomechanics, 2004 Dec;37(12):1923-8. 2. Vande Geest JP, Sacks MS, Vorp DA*. "Age Dependency of the Biaxial Biomechanical Behavior of Human Abdominal Aorta", Journal of Biomechanical Engineering, 2004 Dec:126:815-822. 3. Vorp DA*, Vande Geest JP. "Biomechanical Determinants of Abdominal Aortic Aneurysm Rupture", Arteriosclerosis Thrombosis and Vascular Biology, 2005 Aug;25(8):1558-66 (invited review paper). 4. Freytes DO, Rundell AE, Vande Geest JP, Vorp DA, Webster TJ, and Badylak SF*. "Analytically Derived Material Properties of Multilaminated Extracellular Matrix Devices using the Ball-burst Test", Biomaterials, 2005 26(27):5518-5531. 5. Vande Geest JP, Sacks MS, Vorp DA*. "The Effects of Aneurysm on the Biaxial Mechanical Behavior of Human Abdominal Aorta", Journal of Biomechanics, 2006 39(7):1324-1334. 6.Vande Geest JP, Wang DH, Wisniewski SR, Makaroun MS, Vorp ...
Sigma-Aldrich offers abstracts and full-text articles by [Xianming Su, Xiaowen Zhi, Ting Cui, Qiaowei Zheng, Shixiang Wang, Yongxiao Cao, Changcong Cui, Weiyi Feng].
BACKGROUND: Total occlusion of the infrarenal abdominal aorta is a very rare disease in clinical practice. The clinical outcome may be poor unless management is attempted promptly. Surgical bypass has been recommended as the treatment of choice for these lesions. However, there was relatively high surgical mortality and morbidity associad with aorto-bifemoral bypass graft in patients with other systemic disease, especially coronary artery disease. As a result, the use of, thrombolysis with percutaneous transluminal angioplasty (PTA) has recently been extended to this disease as an alternative method to surgery. PTA is technically simpler with less morbidity and mortality than surgery.We report our experience with thrombolysis and balloon angioplasty of total aortic occlusion in 14 patients between March 1991 and December 1996. METHODS: Fourteen patients, whose mean age was 59+/-13 years (11 male, 3 female), serve as the studys patients. Aortography was introduced via transbrachial artery. The ...
An abdominal aorta scan uses high-frequency sound waves to visualize the abdominal aorta. Using a specialized Doppler technique, we can also measure the movement of blood within the vessels. This provides detailed pictures of these blood vessels to help physicians determine if there is enlargement of the aorta.
During an abdominal aorta scan, the mobile technologist uses two types of ultrasound to systematically interrogate the entire length of the abdominal aorta. He
TY - JOUR. T1 - The retroperitoneal, left flank approach to the supraceliac aorta for difficult and repeat aortic reconstructions. AU - Mills, Joseph L. AU - Fujitani, Roy M.. AU - Taylor, Spence M.. PY - 1991. Y1 - 1991. N2 - Between 1986 and 1990, 11 patients with relative or absolute contraindications to standard infrarenal reconstructions underwent supraceliac aortofemoral bypass. The operation was performed through a left-flank incision extended into the eleventh intercostal space with retroperitoneal and extrapleural dissection. Indications included multiple failed infrarenal reconstructions in four patients, previous removal of infected aortofemoral bypass graft with failure of extra-anatomic bypass in five patients, prior para-aortic lymph node dissection and radiotherapy in one patient, and aortic aneurysmal disease proximal to the renal arteries in one patient. Bypass conduits included either a bifurcated Dacron graft or a tube graft to the left femoral artery with a femorofemoral ...
Open aortic surgery is employed for patients who have indications for abdominal aortic aneurysm (AAA) repair but unfavorable anatomy for endovascular aortic repair. Open aortic surgery is also necessary to manage aortic thrombosis or repair of aortic
Visit Vascular Diagnostics for a Fort Myers abdominal aorta exam, which could someday save your life from a life-threatening abdominal aortic aneurysm.
Atherosclerosis of aorta abdominal region arises among the first complications of increased cholesterol level in an organism. Danger of disease is that at initial stages it is practically not distinguished, complaints of the patient are absent. When the state worsens there is an abdominal pain of various intensity that depends on the volume of vessels lesion. There is a feeling of gravity and dyspepsia: appetite loss, excessive flatulency, weight loss.. Development of abdominal aorta atherosclerosis leads to more terrible complications. The most dangerous is aneurysm. This is a uniform bottle-shaped expansion of whole vessel with a thinning of its walls or local "protruding" aorta wall.. Such patients have nagging pains in stomach; they are localized in the left half of stomach or near umbilicus, sometimes in loin, seldom inguinal area. Pains begin from attack-like usually right after meal, then in two-three hours stop without assistance.. Feeling of pulsation in stomach is a one more diagnostic ...
An abdominal aortic aneurysm can be repaired with endovascular repair or open surgery. Both methods involve placing an artificial graft inside the damaged artery.
An abdominal aortic aneurysm can be repaired with endovascular repair or open surgery. Both methods involve placing an artificial graft inside the damaged artery.
Thoracic aneurysms occur in the aorta, which is the largest artery in the body. It carries blood away from the heart to all parts of the body. The portion of the aorta that runs through the chest cavity nearest the heart is called the thoracic aorta, while the portion running through the abdomen is known as the abdominal aorta. When a weakened area of the thoracic or abdominal aorta expands or bulges, it is known as a thoracic aortic aneurysm (TAA) or abdominal aortic aneurysm (AAA). Roughly 25 percent of aortic aneurysms occur in the thoracic aorta, while 75 percent occur in the abdominal aorta ...
Contrast-enhanced peripheral MR angiography from the abdominal aorta to the pedal arteries: Combined dynamic two-dimensional and bolus-chase three-dimensional acquisitions Academic Article ...
In 1959 Cook (1) described a clinical syndrome of the occlusion of the abdominal aorta which was dominated by neurological abnormalities. He found four similar cases (2, 3) described under different names and explained differently in respect to their etiology and mechanism. On the basis of his observation of his own two cases and those from the literature, Cook gave the following clinical picture of the syndrome: rapid onset of varying degrees of paraparesis; neurological signs reaching the seventh dorsal segment; areflexia or hyporeflexia of the lower extremities, impaired proprioceptive sensibility; presence of bilateral Babinskis signs; incontinence of the feces ...
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I would like to commend Norris et al . for performing an elegant and important study. 1 The authors answered the primary question of the study and showed that length of hospital stay (LOS) did not differ among the four treatment arms. The rationale for using LOS as the primary outcome measure was that it is the "variable most directly proportional to an integrated final negative effect of all significant perioperative morbidity." Although the authors explain in the discussion why they chose not to focus on "relatively rare events (death and myocardial infarction)," they go on to summarize the important findings of the study in the abstract reporting on LOS followed immediately by the statement:"Postoperative outcomes were similar among the four treatment groups with respect to death, myocardial infarction…". The article lacks a clear statement in the abstract or in the limitations section explaining that the study was insufficiently powered to test differences in these outcomes. The message to ...
Longitudinal image through the normal abdominal aorta (A) with a diameter of 2 cm.. Exam. Begin with the patient in the supine position. Obtain longitudinal and transverse images of entire abdominal aorta and a transverse view of bifurcation to show the iliac arteries. Get a longitudinal image of each iliac artery. Image the superior mesenteric artery (SMA) and celiac artery. Image renal arteries if origins are seen. AAA measurements: AP measurement in longitudinal and transverse views. Measure transverse diameter. Measurements are outer wall to outer wall. If AAA is found, obtain coronal views of right and left kidneys for renal length.. Sonographic Findings: 1) Abdominal aorta , 3 cm, measured from inner wall to inner wall.. ...
Can you please tell us also about the most challenging aortic aneurysm case you managed to treat with a total endovascular solution?. A young 34-year-old mother of two children comes to mind. She had open surgery for coarctation of the abdominal aorta at the age of 18. She developed proximal and distal anastomotic aneurysms of Dacron graft from the proximal descending to the infrarenal aorta involving a reimplanted single left kidney. We performed embolisation of the residual descending aortic lumen to avoid endoleak, implanted a tapered thoracic stent graft percutaneously and, four weeks later, staged a custom-made device for the abdominal segment preserving the renal artery using fusion navigation in very short landing zones. Avoiding re-thoracotomy and laparotomy, working percutaneously and discharging this young patient after three days is so persuasive that "endo", even out of instructions for use and without knowing long-term results, is a huge benefit for many patients, both elderly and ...
94. of such a variation is the comparative incidence of wounds of the vena cava and of the abdominal aorta (pp. 318, 322). Thirty-three of the former were observed, but none of the latter, presumably because wounds of the abdominal aorta were almost immediately fatal.. When the distribution of abdominal visceral injuries in this series is compared with the distribution in other reported series (table 8), two important differences are at once apparent:. 1. In general, the frequency of wounding of all organs was higher in this series than in most other series.. 2. The rate of univisceral to multivisceral wounds was strikingly reversed in comparison with earlier experiences. The assumption seems warranted that in this series a much higher proportion of severely wounded men (that is, men with multiple visceral wounds) reached forward hospitals, and were operated on, than was the case in other reported series. No other explanation seems reasonable for the overall increase in frequency of wounding of ...
A flexible instrument having spoon shaped flat jaws with serrations which makes sure non-traumatic clamping during surgical procedures.
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Arti kata dari aaa. Definisi dari aaa. Pengertian dari aaa: an aneurysm of the abdominal aorta associated with old age and hypertension;
Oxygenated blood begins its course down the chest through the thoracic aorta, a major blood vessel with branches that serve the chest muscles and lungs. This becomes the abdominal aorta.
Stroke and vascular disease affect thousands of Americans each year. A screening for these diseases can measure your risk and provide important information to help improve your vascular health and prevent life-threatening problems. The stroke and vascular screening at Inland Imaging includes a check of the three areas of your body that are most susceptible to signs of vascular disease: the abdominal aorta, the carotid arteries, and the peripheral arteries.. Heart Disease ...
A surgical procedure in which the surgeon uses a graft - either a blood vessel from another part of the body or one made of synthetic fabric - to bypass a blockage and restore blood flow to a blocked abdominal aorta. Typically requires a hospital stay of five to seven days ...
стр. 87 Temporary intra-abdominal extravasal transparietal compression of terminal abdominal aorta - the key to reducing the duration of obstetric bleeding and amount of blood loss Аntonyuk-Kysil V. M., Yenikieieva V. M., Lichner S. І., Lypnyi V. M., Drozd V. V. HEALTH OF WOMAN. 2016.10(116):87-90; DOI 10.15574/HW.2016.116.87 ...
TY - JOUR. T1 - Comparison of transmitted pressure across percutaneous abdominal aorta aneurysm conduits. T2 - A new in vitro model. AU - Thorpe, P. E.. AU - Hunter, D. W.. AU - Chouinard, P.. AU - Agrawal, Devendra K.. AU - Zhan, X. X.. PY - 1996. Y1 - 1996. N2 - The treatment of abdominal aorta aneurysm is aimed at decreasing pressure on the arterial wall which is thought to cause growth and eventual rupture of the aneurysm. If significant pressure is transmitted across percutaneously placed stem-grafts, they may prove unacceptable for abdominal aorta aneurysm repair. Therefore, we developed an in mm model to study transmission of pressure across various materials implanted in an aneurysmal lumen. A pinch roller model producing pulsatile flow through an aneurysm fashioned from heated polyethylene was used with H2O, glycerol and heparinized bovine blood. Continuous pressure readings obtained from 3 sites (above, below and mid aneurysm) were compared between different materials including bare ...
ATLANTA--Researchers have found a link between dysregulated tryptophan metabolism and abdominal aortic aneurysm, a life-threatening vascular disease, according to a new study led by Georgia State University.. Abdominal aortic aneurysm is a permanent, localized enlargement of the abdominal aorta, the largest artery in the abdomen that provides blood to the organs and tissues of the abdomen, pelvis and legs. Because the abdominal aorta is one of four sections of the aorta, the bodys main supplier of blood, a ruptured abdominal aortic aneurysm can cause life-threatening bleeding, according to the Mayo Clinic.. Abdominal aortic aneurysm occurs in up to 9 percent of adults older than 65 years of age, with about 15,000 deaths each year in the United States after rupture. Abdominal aortic aneurysms often grow slowly and without symptoms, making them difficult to detect.. There are no proven therapeutic strategies to block progression of the disease and rupture of the abdominal aorta. The only possible ...
The pathology of the human abdominal aortic aneurysm (AAA) and its relationship to the later complication of intraluminal thrombus (ILT) formation remains unclear. The hemodynamics in the diseased abdominal aorta are hypothesized to be a key contributor to the formation and growth of ILT. The objective of this investigation is to establish a reliable 3D flow visualization method with corresponding validation tests with high confidence in order to provide insight into the basic hemodynamic features for a better understanding of hemodynamics in AAA pathology and seek potential treatment for AAA diseases. A stereoscopic particle image velocity (PIV) experiment was conducted using transparent patient-specific experimental AAA models (with and without ILT) at three axial planes. Results show that before ILT formation, a 3D vortex was generated in the AAA phantom. This geometry-related vortex was not observed after the formation of ILT, indicating its possible role in the subsequent appearance of ILT ...
We describe a case of aortic coarctation at the level of the infrarenal abdominal aorta which is encountered in less than six individuals in one million. In contrast to aortic narrowing above or including the renal arteries, this seems to be a relatively benign anomaly without systemic hypertension or impaired renal function. For the first time in this type of anomaly, contrast-enhanced MR angiography (ce-MRA) on a multi-receiver channel MR system, with an 8-channel phased array coil and parallel imaging was used. Ce-MRA displayed a tortuous, narrowed aortic segment that was found to be associated with mesenteric artery stenosis and compression of the orthotopic left renal vein, also known as the nutcracker phenomenon. All major aortic branches could be depicted using 3D surface-shaded displays and subvolume maximum intensity projections (MIPs). Collateral vessels of the abdominal wall were identified using whole-volume MIPs. Since the majority of aortic malformations are diagnosed at a younger age, and
Introduction. Collagen is the most abundant protein in mammals and gives mechanical strength, stiffness and toughness to biological tissues like skin, tendon, bone, and vasculature [1]. Collagen fibrils of about 0.1 micrometers in diameters are the basic building blocks of fibrous collagenous tissues and their organization into suprafibrilar structures determines the tissues macroscopic mechanical properties. For example, detailed data regarding the organization of strong bundles of collagen might be critical to predict the onset of tissue failure, as it is clinically motivated by a rupture risk assessment of Abdominal Aortic Aneurysm (AAA). Previously proposed structural constitutive models for soft biological tissues [2, 3] integrated information regarding the collagen orientation, and regardless of their popularity, the requested microstructural information is not yet available in the open literature.. Method and Materials. The present study investigated the collagen formation in 12 AAA wall ...
Introduction. Collagen is the most abundant protein in mammals and gives mechanical strength, stiffness and toughness to biological tissues like skin, tendon, bone, and vasculature [1]. Collagen fibrils of about 0.1 micrometers in diameters are the basic building blocks of fibrous collagenous tissues and their organization into suprafibrilar structures determines the tissues macroscopic mechanical properties. For example, detailed data regarding the organization of strong bundles of collagen might be critical to predict the onset of tissue failure, as it is clinically motivated by a rupture risk assessment of Abdominal Aortic Aneurysm (AAA). Previously proposed structural constitutive models for soft biological tissues [2, 3] integrated information regarding the collagen orientation, and regardless of their popularity, the requested microstructural information is not yet available in the open literature.. Method and Materials. The present study investigated the collagen formation in 12 AAA wall ...
Endovascular treatment of occlusive disease of the aortic bifurcation is challenging. We developed the Covered Endovascular Reconstruction of Aortic Bifurcation or CERAB-technique, as a new approach for extensive and/or recurrent aortoiliac occlusive disease using three covered balloon expandable stents to reconstruct the aortic bifurcation. This configuration provides the ability to deal with TransAtlantic Inter-Society Consensus (TASC II) C and D lesions, simulating a neo-bifurcation or flow divider in combination with the benefits of covered stents. The intervention can be performed percutaneously or as a hybrid procedure. Initial results are encouraging and further studies are indicated.. ...
Objective: Abnormalities of the aortic root and ascending aorta are common in patients with a bicuspid aortic valve (BAV). The aim of this study was to evaluate the stiffness of the abdominal aorta in children with BAV.Methods: In this cross-sectional observational study, we evaluated 35 children with normally functioning or mildly regurgitant BAV and 35 healthy children as controls. All children were noninvasively evaluated with transthoracic echocardiography. Annulus of aorta and abdominal aorta diameters were measured. Aortic strain (S), pressure strain elastic modulus (Ep), pressure strain normalized by diastolic pressure (Ep*), aortic stiffness β index (βSI) and, aortic distensibility (DIS) were calculated using the measured data. In evaluation of the data Students t-test, Chi-square test, Pearsons correlation and multivariate linear regression analysis were used.Results: Diameter of the aortic annulus was found significantly larger in the children with BAV than the control group (p|0.05). The
TY - JOUR. T1 - Seat belt injuries of the abdominal aorta in adults - Case report and literature review. AU - Freni, Luca. AU - Barbetta, Iacopo. AU - Mazzaccaro, Daniela. AU - Settembrini, Alberto M.. AU - Dallatana, Raffaello. AU - Tassinari, Luca. AU - Settembrini, Piergiorgio G.. PY - 2013/2. Y1 - 2013/2. N2 - Blunt abdominal trauma with major vascular involvement is found to be rare. Although few series have been reported in the literature, the true incidence of blunt abdominal aortic injury is unknown. Different modalities of blunt trauma may occur among civilians with steering wheel and seat belt injury secondary to motor vehicle accident the most frequent. Mechanical forces produce variable patterns of injury; therefore, the onset of signs and symptoms can be different. Dissection and thrombosis of the abdominal aorta have been frequently described among seat-belted adult patients with major vascular involvement. The associated abdominal viscus and/or vertebral lesions must always be ...
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Abdominal aortic aneurysm (AAA) is a common disease for which mechanisms of formation are still not well understood. Despite a strong genetic component to AAA risk, specific risk alleles are still largely unidentified. AAA is also a localized disease with a majority occurring in the infrarenal abdominal aorta and is six times more common than aneurysms of the thoracic aorta. To determine whether risk alleles are present in functional positional candidate genes. we: 1. performed a genetic association study using DNA from AAA cases and controls in ten candidate genes and 2. performed exon sequencing on three genes with evidence of nominal association. To identify genes with regional expression in the aorta of potential relevance to AAA: 1. Illumina microarrays were used to perform a gene expression profiling of entire baboon aortas and 2. protein expression of one candidate gene, HOXA4, was examined in further detail. Single nucleotide polymorphisms in three positional candidate genes, CEBPG, PEPD and
Hypoplastic infrarenal aorta or infrarenal aortic coarctation is an uncommon vascular pathology characterized with diffuse stenosis in the infrarenal abdominal aorta. It is a variant of atherosclerotic occlusive diseases. The exact incidence and etio
Several studies have demonstrated that AngII infusion leads to the formation of AAAs in mice.12,13,50 AngII exerts its diverse bioactive effects primarily by activating the AT1a receptor in mice, which plays a critical role in AngII-induced AAA development.17 In addition to mediating traditional G-protein-dependent signaling, the AT1a receptor is involved in G-protein-independent signaling by forming a complex with the multifunctional scaffolding protein βarr2.19,24 In the present study, we investigated a role for βarr2 in AngII-induced AAA formation and found that βarr2 deficiency significantly attenuates AAA formation in mice both on a hyperlipidemic apoE background and on a normolipidemic C57BL/6 background (Figure 1). These studies suggest that G-protein-independent, βarr2-dependent signaling for the AT1a receptor plays a major role in AngII-induced AAA formation.. Although our present studies showed that βarr2 deficiency attenuated AngII-induced AAA formation in mice on the ...
TY - JOUR. T1 - Supraceliac, but not infrarenal, aortic cross-clamping upregulates neutrophil integrin CD11b. AU - Hill, Gary E.. AU - Mihalakakos, Paul J.. AU - Spurzem, John R.. AU - Baxter, Timothy B.. PY - 1995. Y1 - 1995. N2 - Objective: To evaluate the effects of supraceliac and infrarenal aortic cross-clamping on the expression of neutrophil integrin CD11b (a marker of systemic cytokine release). Design: Two groups, determined by anatomic placement of aortic cross-clamp. Laboratory personnel were blinded as to group assignment. Setting: University teaching and community hospitals. Laboratory facilities used were university and Veterans Affairs medical centers. Participants: Patients scheduled for aortic surgery. Interventions: Blood sampling was performed at baseline, after 30 minutes of aortic cross-clamp duration, 30 and 90 minutes after reperfusion (for tumor necrosis factor-α plasma levels in infrarenal cross-clamp group), and at baseline and 90 minutes reperfusion (for neutrophil ...
This study was undertaken to analyze immediate and mid-term knitted Dacron graft dilation and to establish which parameters should be taken as a reference when aortic graft dilation is evaluated. A Dacron knitted microvel double velour vascular graft (Hemashield Gold) was implanted in 30 patients with aneurysmal (19 cases, 63%) or occlusive (11 cases, 37%) aortic disease. The stems of bifurcated prostheses (27 patients, 90%) and tube grafts (3 patients, 10%) were measured. The package sizing (labelled size) was compared with the external diameter measured intraoperatively with a slide caliper, prior to implantation and after complete clamp release. Additional measurements were obtained by ultrasound 1 and 6 months after implantation, and in 16 cases (53% of the patients) ultrasound and computed tomography (CT) were performed at the end of the first year. The means of the measurements were compared using Students t test for matched pairs. The statistical significance level was set at p values | 0.05.
Vascular Behcets disease has a poor prognosis. This poor prognosis is due to postoperative complications including pseudoaneurysm with 50% occurrence after previous surgical repair of aneurysm especially at the site of surgery. It is suggested that the fragility of the vascular wall may play a major role in this recurrence. Recent studies have demonstrated the effectiveness of endovascular stent-grafting for recurrent aortic aneurysm in patients with Behcets disease. We present a recurrent aneurysm of the abdominal aorta at a previously scarred operative site in a known case of Behcets disease. We attempted an endovascular treatment.. ...
Summary Question: Does backward walking offer additional therapeutic value in patients after aortic aneurysm surgery? Participants: The study of backward walking as an addictive physiotherapy procedure was conducted in the group of 65 patients who underwent abdominal aorta surgery. The patients were randomly divided into three subgroups and three various models of physiotherapy were applied. Control group has only routine physiotherapy since therapeutic group I and II have also walking exercises forward in group I and backward in group II respectively ...
Blood vessels are tubes that carry blood throughout your body. Arteries (red) carry oxygen-rich blood from the heart to the rest of your body. Blood vessels that carry blood back to your heart are called veins (blue). An abdominal aortic aneurysm occurs when a part of the largest artery in the body, the aorta, weakens and expands.. The aorta is the artery that carries blood directly from the heart. Blood then flows from the aorta into smaller arteries that supply the rest of the body. A healthy artery is smooth on the inside, which allows blood to flow easily. The part of the aorta that travels through the abdomen (stomach area) is called the abdominal aorta. Smaller arteries branch of the abdominal aorta to carry blood to organs in the abdomen. These include the renal arteries, which supply the kidneys. Lower down, the aorta divides into two iliac arteries, which supply blood to the legs.. The problem begins when the lining of the aorta is damaged or the aorta may become weakened due to certain ...
Coronary artery calcium (CAC) was measured by the average of 2 electron beam computed tomography (EBCT) measurements, with prevalent CAC defined by an average score of ,10 Agatston units, a data derived threshold determined to maximize signal to noise ratio, as previously described.13 Abdominal MRI was performed using a 1.5 Tesla whole-body MRI system (Intera, Philips Medical Systems). Six transverse slices of the infrarenal abdominal aorta were obtained using a free-breathing, ECG-gated, T2-weighted turbo spin-echo (black-blood) sequence as described previously.14 Images were analyzed by trained observers blinded to all subject data using the Magnetic Resonance Analytic Software Systems (MASS) cardiac analysis software package (Version 4.2 beta, Medis Medical Imaging Systems Inc). Atherosclerotic plaque (AP) was identified as hyperintense signal volume that protruded ≥1 mm from the endoluminal surface of the aortic wall as previously defined.15 Plaque was manually contoured in each image, and ...
The CPT Code 34803 is the code used for Surgery / cardiovascular system. The general guidance for this code is that it is used for repair of bulging (aneurysm) or tear in abdominal aorta. Below you will find cost information associated with this procedure based upon the a set of publicly available data which details all doctors who billed Medicare for this code. These costs are a guideline of what you may be charged for this particular CPT code, but of course your results may vary ...
Learn more about ultrasound abdominal aortic screening from an osteopathic physician. Call Physicians Health & Wellness at 212.838.8265 now. We welcome patients from New York, Manhattan, Midtown, Queens, the Bronx and nearby areas.
Abdominal aortic ultrasound is performed by Dr Frikkie Rademan in Durbanville, Cape Town and Western Cape to diagnose the defects in the abdominal aorta.
The abdominal aorta pulse is located just up and to the left of the umbilicus, according to the Journal of the American Family Physician. To find the pulse in another person, press on his abdomen...
Background Research: The definition of an aneurysm is permanent, localised dilatation of a blood vessel or heart chamber. The abdominal aorta is the largest blood vessel in the human body and usually has a diameter of 1.8 -2.0 centimetres (cm), dependant on age, sex and body habitus. Aortic dilatation is generally classed as an aneurysm when dilation of the vessel is 1.5 times the normal size. An abdominal aortic aneurysm (AAA) affects any part of the aorta below the diaphragm with 80 % typically being found between the renal artery and aortic bifurcation. Risk Factors There are many factors that relate to the development of AAA. Gender is one of the biggest non-modifiable risk factors, as an AAA is four to six times more likely in males compared with females. Furthermore, the development of AAA in females occurs approximately ten years later than males. The risk of AAA also increases if there is family history of the disease, especially if the relative is first degree. There is also ...
ECG-gated scans of the heart used to determine CAC were performed using a standard protocol that has been described in detail.10 At years 15 and 20, 2 sequential heart scans were obtained and their scores averaged, whereas a single scan was obtained at year 25. Image analysis was performed at a central reading center (Wake Forest University Health Sciences, Winston-Salem, NC). Trained technicians measured CAC on a workstation with Food and Drug Administration-approved calcium scoring software (Aquarius Workstation, TeraRecon, Foster City, CA).The Agatston score, corrected for slice thickness with a minimum lesion size of 4 adjacent pixels (minimum area of 1.87 mm2) and attenuation threshold of ≥130 Hounsfield units, is reported.11 For analyses comparing the absence with the presence of CAC or AAC, any CAC or AAC was considered a positive result. The previously reported year 15 CAC scores (read at a different site) were reanalyzed using the year 20 and 25 software and readers to ensure ...
To the editor: In the March 1999 issue of The American Journal of Physiology, Hardt et al. (1) presented an elegant experimental study on the validation of intravascular ultrasound (IVUS) in assessing changes in the pressure-diameter relationship in the aorta of dogs. They compared measurements of abdominal aortic diameters derived from IVUS with those obtained at the same site using implanted sonomicrometers. They then calculated the "arterial compliance as the ratio of systolic to diastolic amplitude of the diameter to the amplitude of the pressure" (1). The unit used to express "compliance" is micrometers per millimeter of mercury (μm/mmHg).. The classic definition by Spencer and Denison (3) of compliance (C) is the change in arterial blood volume (ΔV) due to a given change in arterial blood pressure (ΔP), i.e., C = ΔV/ΔP. This definition is still accepted (and therefore, C is expressed in μm3/mmHg or m3/kPa).. In clinical practice, cross-sectional compliance (CC) is utilized, assuming ...
Three-dimensional computed tomographic (CT) scan reconstruction of an abdominal aortic aneurysm. The aneurysm appears as a swollen bulge located on the abdominal aorta, before its division in the two common iliac arteries. - Stock Image C035/3567
Abdominal aortic aneurysm (AAA) repair procedures can be done surgically or through minimally invasive techniques. AAA procedures are used to treat an aneurysm (abnormal enlargement) of the abdominal aorta.
An abdominal aortic aneurysm (AAA) is a swelling in the abdominal aorta, which is the main artery that supplies blood to your body. As the AAA grows, the wall of the aorta stretches and becomes weaker, which can eventually lead to a significant risk of a ruptured AAA. This is often fatal.
Aneurysm development is a complex process that involves synthesis and degradation of the extracellular macromolecules of the matrix. Proteinases that degrade the structural matrix are likely to have a pivotal role in this process. We have investigated 2 MMPs that account for the majority of the elastolytic activity found in AAA tissue by using 3 different techniques. Our quantitative analyses of transcript and protein levels demonstrate that both MMP-2 and MMP-9 are increased in the diseased aorta. However, only MMP-2 distinguishes between AAA and AOD, with increased production found in AAA. Additionally, there was increased activation and matrix binding of this gelatinase in AAA. MMP-9 transcript and protein were increased in both diseases to a similar extent.. Using QCRT-PCR, we detected MMP-9 in control, AOD, and AAA tissues. MMP-9 transcripts found in the control aorta may reflect the presence of subclinical atherosclerosis in some transplant specimens. These atherosclerotic changes begin in ...
Abdominal aortic aneurysm above the bifurcation (3.2 x 3.6 cm). Ectasia up to 2 cm and massive elongation of the iliac arteries. ...
Magnetic resonance imaging (MRI) of aortic atherosclerosis can predict the risk of heart attacks and other cardiovascular events in otherwise healthy individuals, researchers at UT Southwestern Medical Center have found.
Two hundred aneurysms of the abdominal aorta were treated surgically from 1980 to 1987 by the same surgeon. There were 187 men and 13 women whose mean age was 66.1 years. Nine patients were...
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An aneurysm is defined as a more than 50% increase in diameter compared with the expected normal diameter vessel. A less than 50% increase is termed ectasia. An infrarenal aorta considered to be aneurysmal if it is 3 cm in diameter or greater. S...
cancer. His current treatment consists of Estracyt and LHRH agonist. It is recommended to consider Chemotherapy as an another ... brain ictus in 1999 with no consequences; aneurism of the abdominal aorta with a diameter of 30 mm. Case History: February 2002: ... curvature. Adenopathic formations are present in the pelvic area, along the external iliac axes, with a maximum diameter of 26 mm to .... ...
COLON, DRAWING Vascularization of the colon. The colon is irrigated by the superior and inferior mesenteric arteries, derived from the abdominal aorta, and by their branches. - Stock Image C002/7454
This is an arteriogram of the abdominal aorta, commonly called an aortogram. The right femoral artery was cannulated with a catheter to inject contrast.. ...
HMG-CoA (3-hydroxy-3-methylglutaryl-coenzyme A) reductase inhibitors (statins) have been suggested to attenuate abdominal aortic aneurysm (AAA) growth. However, the effects of statins in human AAA tissues are not fully elucidated. The aim of this study was to investigate the direct effects of statins on proinflammatory molecules in human AAA walls in ex vivo culture. Simvastatin strongly inhibited the activation of nuclear factor (NF)-κB induced by tumor necrosis factor (TNF)-α in human AAA walls, but showed little effect on c-jun N-terminal kinase (JNK) activation. Simvastatin, as well as pitavastatin significantly reduced the secretion of matrix metalloproteinase (MMP)-9, monocyte chemoattractant protein (MCP)-2 and epithelial neutrophil-activating peptide (CXCL5) under both basal and TNF-α-stimulated conditions. Similar to statins, the Rac1 inhibitor NSC23766 significantly inhibited the activation of NF-κB, accompanied by a decreased secretion of MMP-9, MCP-2 and CXCL5. Moreover, the effect of
2017, Springer Science+Business Media B.V., part of Springer Nature. Purpose: Vascular calcification is common in chronic kidney disease (CKD) and predicts poor patient outcomes. While computed tomography is the gold standard for evaluation of vascular calcification, plain radiograph offers a simpler and less costly alternative. The calcification of abdominal aorta, iliac and femoral arteries has been evaluated by plain radiograph, but the data on their outcome predictabilities are still limited. The present study investigated the role of abdominal aortic calcification (AAC) and pelvic arterial calcification (PAC) in predicting overall morality in non-dialysis CKD stages 2-5 (CKD 2-5), maintenance hemodialysis (HD) and long-term kidney transplant (KT) patients. Methods: Four hundred and nineteen patients were included. Lateral abdominal and pelvic radiographs were obtained. The degree of AAC and PAC was evaluated according to the methods described previously by Kaupplia et al. and Adragao et al. ...
Penetrating injuries to the abdominal aorta are highly lethal despite increasing numbers of reports of successful treatment. A case of survival after a 0,25-calibre gunshot wound of the abdominal aorta is presented. The patient, a young male, also had associated injuries to the liver, stomach and jejunum. He was managed by vigorous resuscitation, emergency laparotomy, aortic debridement and end-to-end re-anastomosis. He was discharged from hospital on the 12th postoperative day.. ...
Infrarenal aorta and vena cava The vena cava is easily compressible with the transducer, and it bears impressions from adjacent organs. The aorta has a circular cross section, whereas the vena cava is somewhat flattenedLiveJournal Tags: Ultrasound images Infrarenal aorta and vena cava,The normal ultrasound images of the Infrarenal aorta and vena cava ...
An aneurysm occurs when a blood vessel becomes abnormally large or balloons outward. The abdominal aorta is a large blood vessel that supplies blood to your abdomen, the pelvis, and legs. When a weak area of the abdominal aorta grows, it is called an abdominal aortic aneurysm (AAA). AAA can develop in anyone, but it is primarily seen in men over 60 with one or more risk factors. The larger the aneurysm, the more likely it is to rupture which can cause massive internal bleeding and can be fatal. When diagnosed early, abdominal aortic aneurysms can be treated, or even cured, with highly effective and safe treatments ...
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An 86-year-old man presented to our emergency department with fever that he had been experiencing for days. His body temperature was 38.6°C (101.5°F), heart rate was 86 bpm, and blood pressure was 96/50 mm Hg. There was no chest pain, back pain, or abdominal discomfort. Previous medical history included type II diabetes mellitus and prostate cancer under hormonal therapy. Decreased left breathing sound was noted. Initial laboratory studies revealed leukocytosis, elevated C-reactive protein, and acute renal failure. A chest x-ray disclosed a massive amount of left pleural effusion. A thoracocentesis was performed, and the fluid was pus-like exudates. Transverse, sagittal, and coronal views of noncontrast chest computed tomography are shown in Figure A, B, and C, respectively (see also Movies I through III in the online-only Data Supplement). Periaortic foamy air collection was found up to the arch and down to the infrarenal abdominal aorta. Aortic wall invasion was observed in a segment of ...
The sub-renal abnormalities of the lower vena cava (LVC) (left LVC, double LVC) are determined by a deterioration of the alteration process of supra-cardinal veins. Though they are rare, it is necessary to look for them during surgery of abdominal aorta in order to lower the risk of iatrogenic venous injuries. You will find below the description of six cases of sub-renal lower vena cava abnormality (3 double LVC, 3 left LVC) associated with an abdominal aorta aneurism (4 non specific aneurisms, 2 inflammations ones) as well as the diagnostic aspects and the technical issues they cause during the reconstruction of a non specific and inflammation aneurism of the abdominal aorta ...
The aorta is the major artery that carries blood away from the heart. There are many branches off the aorta, including arteries that carry blood to the kidneys and legs.. Ultrasound imaging is used to check the condition of the arteries in the abdominal aorta and its branches. One of the most important conditions detected by this evaluation is an abdominal aortic aneurysm, or AAA. An AAA is caused when the lining in the wall of the aorta becomes weak, and the artery balloons or gets bigger.. ...
Background: Breast lesions are more prevalent in the present population. Eighty percent (80%) of lesions are benign. No clinical examination or investigation is accurate in the detection of benign breast disease (BBD). Accuracy of diagnosis increases when clinical examination, ultrasonography (USG) breast, and fine-needle aspiration cytology (FNAC)/histopathological examination (HPE) are combined. The objective of this study was to compare the role of clinical examination, USG/mammography, and HPE study in the diagnosis of BBDs. Patients and Methods: Consecutive female patients presented with breast diseases to the Department of Surgery, SVS Medical College and Hospital, Mahabubnagar, Telangana, India, between October 2013 and September 2015. Detailed history of the patient was noted to find out the reasonable risk factor. Clinical examination was done followed by USG/mammography of the breast and FNAC/HPE. Results: On analysis of our study, it was found that the incidence of benign breast lumps ...
Background Aortic bifemoral bypass (or aortobifemoral bypass) is a surgical procedure performed in patients with atherosclerotic disease of the infrarenal aorta and iliac vessels (see the images below). Most patients who undergo this procedure have symptoms of claudication, impotence, and poorly healing ulcers.
Abdominal Aortic Aneurysm (AAA) Screening is now available in MPHC The 4th Practice in conjuction with Affidea. What is an AAA?. The aorta is the main vessel carrying blood around your body. In some people, especially older men, the wall of the aorta gradually weakens and starts to expand. See diagrammatic illustration below.. Is an AAA serious?. Large AAA are rare, but can be very serious. As the aorta expands it can burst, and the person usually dies. Small/medium sized AAA are not as dangerous, and your consultant vascular surgeon will arrange ultrasound monitoring to see if it gets bigger.. Is Screening for AAA important, and why are you invited?. Most people with AAA have no symptoms. A simple painless ultrasound scan of your tummy will tell if you have an AAA. We are inviting men only, as AAA are six times more common in men than women. Ruptured AAA mostly happens to men. You also are more likely to have an AAA if you you smoke, have high blood pressure or your parent, brother or sister ...
The US Preventative Services Task Force (USPSTF)have recommended that men aged 65 to 75 who have ever smoked should get an ultrasound to screen for Abdominal Aortic Aneurysm (AAA).. Why is screening important? Most AAAs are "silent" until they rupture and AAA ruptures are often fatal.. The Mayo Clinic defines an AAA as "An abdominal aortic aneurysm is an enlarged area in the lower part of the aorta, the major blood vessel that supplies blood to the body. The aorta, about the thickness of a garden hose, runs from your heart through the center of your chest and abdomen. Because the aorta is the bodys main supplier of blood, a ruptured abdominal aortic aneurysm can cause life-threatening bleeding". Screening for an AAA is an easy procedure - its simply an ultrasound of your abdomen, concentrating on the aorta. Canada Diagnostic Centres has been providing AAA screening since 2007 and patients often combine this screening test with our other screening exams for early detection of disease.. What ...
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Arteries and Circulation of the Legs. This stock medical illustration pictures a single anterior view of the male torso from the waist down. Clearly illustrated and labeled within this view are the main arteries and branches from the abdominal aorta down through the pelvis, legs and into the feet. Labels include the abdominal aorta, common iliac, femoral, popliteal and anterior tibial arteries.
From the Department of Surgery, Tri-Service General Hospital, National Defense Medical Center, Taipei, Taiwan, Republic of China.. Submitted for publication June 15, 2008.. Accepted for publication June 16, 2008.. Address for reprint: Dr. Chang-Chieh Wu, Department of Surgery, Tri-Service General Hospital, No. 325, Cheng-Kung Road, Sec 2, Neihu 114, Taipei, Taiwan, ROC; email: [email protected] ...
An aortic graft, and method and apparatus for repairing an abdominal aortic aneurysm includes a tubular graft which is intraluminally delivered through the aorta and secured to the aorta by the expansion and deformation of a thin-walled tubular member.
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Diagnosis Code S35.02 information, including descriptions, synonyms, code edits, diagnostic related groups, ICD-9 conversion and references to the diseases index.
Although an abdominal ultrasound can be done to check for a number of conditions, it can be used to screen for an abdominal aortic aneurysm. An abdominal aortic aneurysm is a weakened, bulging spot in your abdominal aorta, the artery that runs through the middle of your abdomen and supplies blood to the lower half of your body.
An abdominal aortic aneurysm (AAA) is described by doctors as a pathological dilation of the main abdominal artery (aorta). Its diameter varies depending on age and sex; an abdominal aorta with a diameter of 3 cm or more is called an AAA. The risk increases with age, whereby women are markedly less often affected than men.Most AAAs cause no problems, that is, they are asymptomatic. However, the larger the size of the AAA, the greater the danger that this large blood vessel will rupture. Without treatment such a rupture quickly results in death. But even if patients reach a hospital on time and emergency surgery is still possible, about 40% of patients receiving open surgery and about 20% receiving endovascular surgery die.Screening aims to lower risk of death. In contrast, if an AAA is detected in time and a patient can undergo elective surgery, the chance of survival is considerably higher: Depending on the type of surgery (endovascular or open) in Germany between 1.3% and 3.6% of patients die ...
We thank Dr. Nelson and colleagues for their interest in our recent work concerning the effect of age on the biomechanical properties of the human aorta (1). We observed the greatest age-related difference in the aortic pulse wave velocity in the distal abdominal aorta, and the least in the aortic arch, suggesting that the distal aorta stiffened most with age. As we noted in our discussion, and as Dr. Nelson and colleagues reiterate, others have reported the converse, that is, that the ascending aorta stiffens most with age (2,3). No doubt, there are several explanations for these discrepant observations, not least the very small sample sizes reported by some authors (2,3), the use of differing techniques to estimate regional stiffness, methodological issues such as the use of nonsimultaneous, peripheral pressure when calculating distensibility/compliance (3), and technical issues such as inaccurate edge detection with cardiac magnetic resonance with varying sequences (4). Interestingly, a ...
This study demonstrated that CYP1B1 is critical for the development of AAL, associated inflammation, vascular damage, and hypertension in ApoE−/− mice fed AD, most likely by promoting increased oxidative stress and hyperlipidemia, which seems to be independent of lipid absorption. Eight-week-old ApoE−/−/Cyp1b1+/+ mice fed AD but not ND for 12 weeks developed AAL in the descending thoracic and abdominal aorta and in sections of proximal aorta. Our finding, that treatment with TMS, an inhibitor of CYP1B1 activity,19 for 12 weeks in ApoE−/−/Cyp1b1+/+ mice fed AD minimized AAL, suggests that CYP1B1 activity is required for the development of lesions. Although CYP1B1 is constitutively active, AD increased CYP1B1 activity without altering its expression as measured in the heart, whereas TMS inhibited its activity but not its expression. Because CYP1B1 is constitutively active, the increase in its activity by AD that could be because of biochemical modification of this enzyme remains to be ...
OBJECTIVE: To retrospectively evaluate the clinical features, angiographic findings, and outcomes of children with Takayasu arteritis (TA) in Turkey. METHODS: Clinical, laboratory, and angiographic findings and outcomes of 19 children with TA were evaluated with a retrospective chart review. The criteria for inclusion were those proposed by the American College of Rheumatology. RESULTS: Mean followup period was 35.89 +/- 40.75 months (range 1-168, median 30). There were 14 girls and 5 boys. The mean age at diagnosis was 12.84 +/- 2.69 years (range 8-17, median 13). The most common complaints on admission were headache (84%), abdominal pain (37%), claudication of extremities (32%), fever (26%), and weight loss (10%). One patient presented with visual loss. Examination on admission revealed hypertension (89%), absent pulses (58%), and bruits (42%). Angiography revealed type I in 13 patients (aortic arch, descending thoracic, and abdominal aorta), type II in 4 (descending thoracic aorta and ...
TY - JOUR. T1 - Successful sonographic visualisation of the abdominal aorta differs significantly among a diverse group of credentialed emergency department providers. AU - Hoffmann, Beatrice. AU - Bessman, Edward S.. AU - Um, Patrick. AU - Ding, Ru. AU - McCarthy, Melissa L.. PY - 2011/6/1. Y1 - 2011/6/1. N2 - Background: The aims of this study were to examine the association between emergency department (ED) providers experience with bedside ultrasound after achieving credentialing for abdominal aortic aneurysm (AAA) sonography, and their successful visualisation rate of the abdominal aorta among consecutive patients who presented asymptomatically but with risk factors for AAA. Methods: Study coordinators enrolled asymptomatic men ,50 years presenting to a single ED with AAA risk factors. One of 20 AAA credentialed ED sonographers screened each subject for AAA. Screening forms and ultrasound images were reviewed for quality assurance. Multivariate logistic regression was used to estimate OR ...
Epidemiologic research has shown a correlation between cigarette smoke and the risk of developing atherosclerosis and associated pathological processes including abdominal aortic aneurysms (AAA). Hyperlipidemia and hypertension are additional risk factors for atherosclerosis. The hyperlipideamic apolipoprotein e-knockout (ApoE-/-) mouse is a well-established animal model system for studying the mechanisms of the atherosclerotic process. In this study, we examined the mechanistic effects occurring as three risk factors interact in the atherosclerotic process. Hypertension was induced in hyperlipidemic apolipoprotein-e-knockout (ApoE-/-) mice by application of angiotensin-II and the mice were exposed to mainstream smoke from the reference cigarette 2R4F (University of Kentucky) for 30 days. AAA formation was seen only in angiotensin-ii treated ApoE-/--mice. The incidence and severity of AAA were further increased by smoke exposure. Expression of matrix metalloproteinases-(MMP)-2, -3, -8, -9, and ...
About 3 out of 4 abdominal aortic aneurysms dont cause symptoms. An aneurysm may be found by X-ray, computed tomography (CT or CAT) scan, or magnetic resonance imaging (MRI) that was done for other reasons. Since abdominal aneurysm may not have symptoms, its called the "silent killer" because it may rupture before being diagnosed. Pain is the most common symptom of an abdominal aortic aneurysm. The pain associated with an abdominal aortic aneurysm may be located in the abdomen, chest, lower back, or groin area. The pain may be severe or dull. Sudden, severe pain in the back or abdomen may mean the aneurysm is about to rupture. This is a life-threatening medical emergency. Abdominal aortic aneurysms may also cause a pulsing sensation, similar to a heartbeat, in the abdomen. The symptoms of an abdominal aortic aneurysm may look like other medical conditions or problems. Always see your doctor for a diagnosis. ...
Although TGF-β blockade has shown benefit in MFS mouse models,2 the exact mechanisms through which TGF-β signaling leads to aneurysm development remain ill-defined. In this study, using Fbn1C1039G/+ mice, we have demonstrated that: (1) aortic root dilation forms as early as 2 weeks of age; (2) miR-29b expression is increased in Marfan AS aorta during early aneurysm development; (3) enhanced TGF-β signaling in the aortic wall of Fbn1C1039G/+ mice may serve to reduce active NF-κB, thereby causing a derepression of miR-29b; (4) treatment with a miR-29b oligonucleotide inhibitor prevents early aneurysm formation in Marfan mice; and (5) Marfan aortic aneurysm development is most closely associated with reduced elastogenesis and increased elastin fragmentation.. Here, we report for the first time to our knowledge that miR-29b plays an important role in early aneurysm formation in a Marfan mouse model. The miR-29b expression was significantly increased in the AS aorta, but not in the D or ABD ...
Rationale: Aneurysm development, progression and rupture are characterised by extensive inflammation, dominated by the infiltration of T-cells, B-cells and macrophages. Recent studies into the pathophysiology of aneurysm wall degradation suggest a close relation between increased mechanical stress and the local activation of infiltrated lymphocytes and macrophages. The non-invasive detection of aneurysm wall inflammation, using 18-fluorodeoxyglucose positron emission tomography (FDG-PET) might therefore provide valuable information on the extend of the disease and could clarify the role of mechanical stress on the propagation of aneurysm wall inflammation.. Objective: Correlation of FDG uptake and in vitro aneurysm wall tensile strength. (primary objective). The effect of aneurysm sac depressurisation, after endovascular aneurysm repair, on aneurysm wall inflammation (secondary objective).. Study design: Observational case series (pilot). Study population: Patients scheduled for conventional ...
Abdomen Aortic Aneurysm AAA Endovascular repair in Bangkok Thailand. Abdominal aortic aneurysm may not be noticeable, but deadly illness that is waiting to burst. We are fortuned to be living in a time where advanced medical technology and medical expertise can reduce the risk of death. Statistics have shown that 50 - 90% of patients overcome the disease. Our expert vascular surgeon shared with us his experience the treatment of abdominal aortic aneurysm. The aorta sends blood to each organ in the body, driven by the heart. Blood is supplied through the pulmonary artery, to the abdomen where the main artery splits into two just below the belly to supply the legs and pelvis. If there is any damage in this part of the blood vessel, the blood will seep out and will not be able to reach any other organ in the body, resulting in death. Abdominal aortic aneurysm is a condition where the blood vessel dilates to more than 1.5 - 2 cm in diameter. The cause is unclear; risk factors are smoking, ...
Endovascular Abdominal Aortic Aneurysm Repair Devices Report by Material, Application, and Geography Global Forecast to 2021 is a professional and in-depth research report on the worlds major regional market conditions, focusing on the main regions (North America, Europe and Asia-Pacific) and the main countries (United States, Germany, united Kingdom, Japan, South Korea and China).. Get Sample copy of the Report: http://sacinsight.com/report/global-endovascular-abdominal-aortic-aneurysm-repair-devices-market-research-report-2017_9dimen/. The report firstly introduced the Endovascular Abdominal Aortic Aneurysm Repair Devices basics: definitions, classifications, applications and market overview; product specifications; manufacturing processes; cost structures, raw materials and so on. Then it analyzed the worlds main region market conditions, including the product price, profit, capacity, production, supply, demand and market growth rate and forecast etc. In the end, the report introduced new ...
Aorta. Sections. *Ascending aorta. *Aortic arch. *Descending aorta. *Thoracic aorta. *Abdominal aorta ... Left heart → Aorta → Arteries → Arterioles → Capillaries → Venules → Veins → Vena cava → (Right heart) ...
Abdominal aorta[edit]. inferior phrenic[edit]. celiac[edit]. *left gastric artery *hepatic branch ... Thoracic aorta[edit]. This section needs expansion. You can help by adding to it. (October 2007) ... left common carotid artery (directly from arch of aorta on left mostly)[edit]. internal carotid artery[edit]. *ophthalmic ... Left subclavian artery (directly from arch of aorta on left)[edit]. vertebral artery[edit]. *Meningeal branches of vertebral ...
Anatomy photo:40:11-0105 at the SUNY Downstate Medical Center - "Posterior Abdominal Wall: Branches of the Abdominal Aorta" ... The renal arteries normally arise off the left interior side of the abdominal aorta, immediately below the superior mesenteric ... Due to the position of the aorta, the inferior vena cava, and the kidneys in the body, the right renal artery is normally ... One or two accessory renal arteries are frequently found, especially on the left side since they usually arise from the aorta, ...
Abdominal. aorta. Celiac. Left gastric. *Esophageal branches. Common hepatic. *Proper hepatic *cystic ...
Abdominal. aorta. Celiac. Left gastric. *Esophageal branches. Common hepatic. *Proper hepatic *cystic ...
Abdominal aorta, 11. Common iliac artery and vein. Transparent: 12. Liver, 13. Large intestine, 14. Pelvis ...
Abdominal aorta, 11. Common iliac artery and vein. With transparency: 12. Liver, 13. Large intestine, 14. Pelvis ... The peritoneum is carried by it from the apex on to the abdominal wall to form the middle umbilical fold. ... and from there the median umbilical ligament continues upward on the back of the anterior abdominal wall to the umbilicus. ...
bruit over one or both carotid arteries or abdominal aorta. *arteriographic narrowing of aorta, its primary branches, or large ... Primarily affects the aorta and its main branches. At least 3 out of 6 criteria yields sensitivity and specificity of 90.5 and ... However, in Takayasu's arteritis, where the aorta may be involved, it is unlikely a biopsy will be successful and angiography ... Common (and nonspecific) complaints include fatigue, weakness, fever, arthralgias, abdominal pain, hypertension, renal ...
First, any abdominal scar tissue from previous surgeries must be removed. The aorta and vena cava are dissected in preparation ... Arterial vessels are connected to the abdominal aorta, below the kidneys. However, venous drainage, or the reattachment of the ... As the abdominal organs are cooled in situ, the surrounding tissue is dissected so that they may be quickly extracted. In the ... Following this, the aorta, cava, and portal veins of the donor and recipient are anastomosed. The graft is then flushed before ...
Abdominal aorta aneurysms; corneal endothelium, corneal keratocytes, trabecular cells, ciliary epithelium, conjunctival stromal ... The ductus operates in the fetus to shunt blood from the pulmonary artery to the proximal descending aorta thereby allowing ...
2. The Abdominal Aorta". Anatomy of the Human Body. Retrieved 9 December 2015. Ceppa, EP; Fuh, KC; Bulkley, GB (April 2003). " ... Both the superior and inferior mesenteric arteries arise from the abdominal aorta. Each of these arteries travel through the ... The mesenteric arteries take blood from the aorta and distribute it to a large portion of the gastrointestinal tract. ...
Astley Paston Cooper (1768-1841) first performed a successful ligation of the abdominal aorta. James Syme (1799-1870) pioneered ...
... abdominal aorta). The chest (apex of the heart), which can be felt with one's hand or fingers. It is also possible to ...
The ovarian arteries are paired structures that arise from the abdominal aorta. After emerging from the aorta, the artery ... The abdominal aorta and its branches. Vessels of the uterus and its appendages, rear view. Uterus and right broad ligament, ... It arises from the abdominal aorta below the renal artery. It can be found in the suspensory ligament of the ovary, anterior to ...
The abdominal aorta and its branches. The inferior mesenteric artery and its branches. Abdominal portion of the sympathetic ... "Posterior Abdominal Wall: Branches of the Abdominal Aorta" Anatomy image:7924 at the SUNY Downstate Medical Center Anatomy ... In human anatomy, the inferior mesenteric artery, often abbreviated as IMA, is the third main branch of the abdominal aorta and ... The IMA branches off the anterior surface of the abdominal aorta below the renal artery branch points, and approximately midway ...
JAWOR, WJ; PLICE, SG (10 May 1952). "Thrombotic obliteration of the abdominal aorta; report of a case". Journal of the American ... is a form of central artery disease involving the blockage of the abdominal aorta as it transitions into the common iliac ... Graham, Robert (1814). "Case of Obstructed Aorta". Med. Chir. Tr. 5: 297. ... so named because the two common iliac stents touch each other in the distal aorta. Aorto-iliac bypass graft Axillary-bi-femoral ...
The abdominal aorta and its branches. Abdominal portion of the sympathetic trunk, with the celiac and hypogastric plexuses. ... The aortic bifurcation is the point at which the abdominal aorta bifurcates (forks) into the left and right common iliac ... Posterior abdominal wall, after removal of the peritoneum, showing kidneys, supra-renal capsules, and great vessels. Lerona PT ... Tewfik HH (June 1975). "Bifurcation level of the aorta: landmark for pelvic irradiation". Radiology. 115 (3): 735. doi:10.1148/ ...
Experience with infected aneurysms of the abdominal aorta. Arch Surg. 1975;110:1281-1286. Mycotic (Infected) Aneurysm Caused by ...
"A comparison of fenoldopam with dopamine and sodium nitroprusside in patients undergoing cross-clamping of the abdominal aorta" ...
Aortic bifurcation, the point at which the abdominal aorta bifurcates into the left and right common iliac arteries ...
2010 Hospital Quality Ratings: Resection/Replacement of Abdominal Aorta. Healthgrades.com. Retrieved on January 6, 2012. 2010 ... repair of the abdominal aorta, carotid surgery, gastrointestinal surgery, pancreatitis and cholecystectomy. Saint Thomas ...
"Multiple variations in the paired arteries of the abdominal aorta". Clinical Anatomy. 19 (6): 566-568. doi:10.1002/ca.20207. ... Adrenal Gland Aorta This article incorporates text in the public domain from the 20th edition of Gray's Anatomy (1918) Bordei, ... Blood supply to the suprarenal glands." Anatomy photo:40:04-0103 at the SUNY Downstate Medical Center - "Posterior Abdominal ...
Abdominal aorta, 11. Common iliac artery and vein. With transparency: 12. Atay, 13. Malaking bituka, 14. Pelvis. The order of ...
Abdominal aorta, 11. Common iliac artery and vein. With transparency: 12. Liver, 13. Large intestine, 14. Pelvis ...
The nutcracker syndrome (NCS) results most commonly from the compression of the left renal vein between the abdominal aorta (AA ... The legs of this nutcracker, with some imagination, could represent the superior mesenteric artery and abdominal aorta in ... Computed tomography (CT). Abdominal ultrasonography-not definitive but has been found to be useful. Compression of the left ... Play media NCS is associated with hematuria (which can lead to anemia) and abdominal pain (classically left flank or pelvic ...
A pocket for the LVAD is formed in the abdominal wall. A tube is then used to channel blood from the ventricle to the LVAD. ... Another tube is used to connect the pump to the aorta. When the pump is adequately supporting the heart, the patient will be ...
Talk:Abdominal aortic plexus. *Talk:Abdominal external oblique muscle. *Talk:Abdominal fascia ... Talk:Ascending aorta. *Talk:Ascending branch of medial circumflex femoral artery. *Talk:Ascending cervical artery ...
On abdominal X-rays, the small intestine is considered to be abnormally dilated when the diameter exceeds 3 cm. On CT scans, a ... These are both branches of the aorta. The duodenum receives blood from the coeliac trunk via the superior pancreaticoduodenal ... "Abdominal X-ray - Abnormal bowel gas pattern". radiologymasterclass.co.uk. Retrieved 2017-02-07. Gazelle, G S; Goldberg, M A; ... The jejunum and ileum are suspended in the abdominal cavity by mesentery. The mesentery is part of the peritoneum. Arteries, ...
... Arzu Tasdemir,1 Cemal Kahraman,2 Kutay Tasdemir,2 and Ertugrul Mavili3 ...
We present this interesting case because retroperitoneal fibrosis encircling the abdominal aorta can mimic abdominal aorta ... Abdominal ultrasound and contrast-enhanced computerized tomography revealed an infrarenal abdominal aorta aneurysm in a 41-year ... A Fibromatosis Case Mimicking Abdominal Aorta Aneurysm. Arzu Tasdemir,1 Cemal Kahraman,2 Kutay Tasdemir,2 and Ertugrul Mavili3 ... Abdominal aorta aneurysm is rare too and mostly develops secondary to Behcets disease, trauma, and infection or connective ...
Thrombosis in Abdominal Aorta Associated with Nephrotic Syndrome Br Med J 1962; 2 :1730 ... Thrombosis in Abdominal Aorta Associated with Nephrotic Syndrome. Br Med J 1962; 2 doi: https://doi.org/10.1136/bmj.2.5321.1730 ...
... abdominal aorta pronunciation, abdominal aorta translation, English dictionary definition of abdominal aorta. Noun 1. abdominal ... aorta - a branch of the descending aorta aorta - the large trunk artery that carries blood from the left ventricle of the heart ... Abdominal aorta - definition of abdominal aorta by The Free Dictionary https://www.thefreedictionary.com/abdominal+aorta ... abdominal aorta - a branch of the descending aorta aorta - the large trunk artery that carries blood from the left ventricle of ...
The abdominal aorta pulse is located just up and to the left of the umbilicus, according to the Journal of the American Family ... What is calcification of the abdominal aorta?. A: Calcification of the abdominal aorta is a medical condition characterized by ... The abdominal aorta pulse is located just up and to the left of the umbilicus, according to the Journal of the American Family ... Palpating the stomach to examine the abdominal aorta is frequently performed by doctors to screen for peripheral artery disease ...
The abdominal aorta is the largest artery in the abdominal cavity. As part of the aorta, it is a direct continuation of the ... such as used for abdominal aortic aneurysms, is between the outer margins of the aortic wall. Abdominal aorta Cardiovascular ... The abdominal aortas venous counterpart, the inferior vena cava (IVC), travels parallel to it on its right side. Above the ... The abdominal aorta is clinically divided into 2 segments: The Paravisceral segment, off which the visceral branches arise The ...
Abdominal and thoracoabdominal aortic aneurysms are life-threatening diseases that are a frequent cause of death throughout the ... Aneurysm of the abdominal aorta at its bifurcation into the common iliac arteries. Ann Surg. 1940;112:909-22.PubMed ... The impact of stent design on proximal stent-graft fixation in the abdominal aorta: an experimental study. Eur J Vasc Endovasc ... Shah A.S., Khoynezhad A., Gewertz B.L. (2018) Open and Endovascular Surgery for Diseases of the Abdominal Aorta. In: Lanzer P ...
... The abdominal aorta and its branches. Latin pars abdominalis aortae, aorta abdominalis Grays subject #154 602 ... The abdominal aorta is the largest artery in the abdominal cavity. As part of the aorta, it is a direct continuation of ... The abdominal aorta supplies blood to much of the abdominal cavity. It begins at T12, and usually has the following branches: ... The abdominal aorta lies slightly to the left of the midline of the body. It is covered, anteriorly, by the lesser omentum and ...
Calcification of the abdominal aorta is caused by the presence and subsequent calcification of atheromatous plaques in the ... aorta, which form by accumulation of fatty deposits in the blood vessels.... ... The atheromatous plaques that calcify and cause the rigidness of the abdominal aorta appear on the intimal surface of the aorta ... Calcification of the abdominal aorta is caused by the presence and subsequent calcification of atheromatous plaques in the ...
False Aneurism of the Abdominal Aorta, caused by Caries of the Vertebræ Lond J Med 1852; s2-4 :35 ... False Aneurism of the Abdominal Aorta, caused by Caries of the Vertebræ ... False Aneurism of the Abdominal Aorta, caused by Caries of the Vertebræ ... False Aneurism of the Abdominal Aorta, caused by Caries of the Vertebræ. Lond J Med 1852; s2-4 doi: https://doi.org/10.1136/bmj ...
... abdominal aorta explanation free. What is abdominal aorta? Meaning of abdominal aorta medical term. What does abdominal aorta ... Looking for online definition of abdominal aorta in the Medical Dictionary? ... Synonym(s): abdominal part of aorta, aorta abdominalis, pars abdominalis aortae. aorta. pl. aortae, aortas [L.] the great ... abdominal part of descending aorta. abdominal aorta. n.. The part of the descending aorta that extends from the diaphragm to ...
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Abdominal aorta Doppler pulsations are lower in patients with HLHS whose clinical course is complicated by NEC. This finding ... We analyzed the abdominal aorta pulsatility index and right-ventricular function on routine preoperative and postoperative ... Those with NEC had a lower abdominal aorta pulsatility index compared with those without NEC both on stage I preoperative (3.38 ... Abnormal Abdominal Aorta Hemodynamics Are Associated With Necrotizing Enterocolitis in Infants With Hypoplastic Left Heart ...
Instructions to help patients prepare for an abdominal aorta duplex ultrasound at CentraCare Heart & Vascular Center in St. ... Abdominal Aorta Duplex Ultrasound. Purpose of the Test. This ultrasound helps us see the abdominal aorta, the main artery ... Home , Services , Heart & Vascular , Heart Services , Diagnostic Cardiology , Abdominal Aorta Duplex Ultrasound ...
Home , April 1931 - Volume 93 - Issue 4 , LIGATION OF THE ABDOMINAL AORTA FOR ANEURISM OF THE COMMON I... ... LIGATION OF THE ABDOMINAL AORTA FOR ANEURISM OF THE COMMON ILIAC ARTERY: PDF Only ... LIGATION OF THE ABDOMINAL AORTA FOR ANEURISM OF THE COMMON ILIAC ARTERY* ...
Beaded Mycotic Aneurysm of the Abdominal Aorta. Huang, Bo-Wei MD; Hsu, Kuo-Feng MD; Lin, Chih-Yuan MD; Wu, Chang-Chieh MD, PhD ...
The aorta is the largest blood vessel in the body. Abdominal aortic aneurysm (AAA) occurs when the weakened aortic wall dilates ... Hans and colleagues first inspected tissue specimens from the abdominal aorta of patients undergoing AAA repair and a mouse ... Study: Gene Linked to Inflammation in the Aorta May Contribute to Abdominal Aortic Aneurysm. October 24, 2012. ... Study: Gene Linked to Inflammation in the Aorta May Contribute to Abdominal Aortic Aneurysm ...
Comparação entre os tratamentos aberto e endovascular dos aneurismas de aorta abdominal em pacientes de alto risco cirúrgico. J ... Abdominal aortic aneurysms are generally diagnosed during routine examinations and, while they can cause abdominal or lumbar ... open repair for abdominal aortic aneurysm in patients aged 80 years and older: systematic review and meta-analysis. Eur J Vasc ... Abdominal aortic aneurysm (AAA) is a condition that is usually asymptomatic and is potentially fatal by the time the first ...
... abdominal aorta explanation. Define abdominal aorta by Websters Dictionary, WordNet Lexical Database, Dictionary of Computing ... Abdominal. abdominal actinomycosis. -- abdominal aorta --. abdominal aortic aneurysm. abdominal breathing. abdominal cavity. ... Abdominal Migraine. abdominal muscle. abdominal nerve plexus. abdominal pregnancy. Abdominal ring. abdominal wall. Abdominales ... abdominal aorta Noun. 1.. abdominal aorta - a branch of the descending aorta. ...
Radiological supervision and interpretation X-ray of abdominal. Aorta and both leg arteries. Service Code: 75630, Service Type ...
Dilatación de la aorta abdominal en pacientes con enfermedad cerebrovascular isquémica Abdominal aortic dilatation in patients ... Home » Medicina Clínica » Dilatación de la aorta abdominal en pacientes con enfermedad cerebrovascular isquémica ...
... aortic arch saccular aneurysm and abdominal aortic aneurysm ... Aorta, Abdominal*. Aorta, Thoracic*. Aortic Aneurysm, Abdominal ... aortic arch saccular aneurysm and abdominal aortic aneurysm. Two-staged operations by which the infrarenal abdominal aorta was ... 8811368 - Thrombosis of the abdominal aorta secondary to brucella spondylitis.. 11809548 - Giant ureteral stone in association ...
Aorta Aorta, Abdominal Aortography Arteries Catheters Coronary Artery Disease Dilatation Gangrene Hemorrhage Humans Leg Male ... Total occlusion of abdominal aorta PTA thrombolytic therapy stent MeSH Terms expand_less. expand_more. Angioplasty Angioplasty ... BACKGROUND: Total occlusion of the infrarenal abdominal aorta is a very rare disease in clinical practice. The clinical outcome ... The causes of aortic occlusion were thromboembolism in 4 patients and thrombosis of an atherosclerotic aorta in 10 patients. ...
Iodixanol in multidetector-row computed tomography angiography (MDCTA): diagnostic accuracy for abdominal aorta and abdominal ... 173 patients with known or suspected aortic aneurysms or stenosis/occlusion of the abdominal aorta or its major branches were ... or surgical findings in the evaluation of the abdominal aorta and its main branches. ... MDCTA using iodixanol is a promising, noninvasive alternative for evaluating patients with abdominal aortic disease. ...
PubMed journal article Age-related increase in wall stress of the human abdominal aorta: an in vivo stud were found in PRIME ... AgingAorta, AbdominalCarotid Artery, CommonFemaleHumansMaleMiddle AgedSex FactorsStress, MechanicalTunica IntimaUltrasonography ... "Age-related Increase in Wall Stress of the Human Abdominal Aorta: an in Vivo Study." Journal of Vascular Surgery, vol. 42, no. ... Age-related Increase in Wall Stress of the Human Abdominal Aorta: an in Vivo Study. J Vasc Surg. 2005;42(5):926-31. PubMed PMID ...
  • In 1959 Cook (1) described a clinical syndrome of the occlusion of the abdominal aorta which was dominated by neurological abnormalities. (annals.org)
  • More importantly, the two techniques measured different IMT thickness in the aorta, emphasizing the importance of using similar technique when comparing the impact of absolute values of IMT on cardiovascular disease. (diva-portal.org)
  • Two MRI measurements of the abdominal aorta - the amount of plaque in the vessel and the thickness of its wall - are associated with future cardiovascular events, such as a heart attack or stroke, according to a study of more than 2,000 adults. (healthmanagement.org)
  • Using the MRI measurements, the researchers found that increased abdominal aortic wall thickness correlated with a greater risk for all types of cardiovascular events. (healthmanagement.org)
  • An emergent computed tomography scan (within 15 min) revealed a Type A aortic dissection extending from ascending aorta to the suprarenal abdominal level ( Figs. 1 C and 1 D) with involvement of the aortic arch and celiac trunk ( Fig. 1 E). An emergent ascending aortic graft and venous bypass graft were performed. (onlinejacc.org)
  • (C, D) Computed tomography imaging demonstrated a type A aortic dissection extending from ascending aorta to the suprarenal abdominal level with involvement of the aortic arch and celiac trunk (E) . (onlinejacc.org)
  • Most commonly it is used to clamp abdominal aorta in cases like aneurysm (abnormal dilatation) or dissection (tear) of the vessel. (surgicalunits.com)
  • The IVC likewise sends its opposite side counterpart, the left renal vein, crossing in front of the aorta. (bionity.com)
  • Anatomy of the abdominal aorta and retroperitoneum. (radiopaedia.org)
  • This diagram has been reproduced from Gray's Anatomy 20th US edition which has now lapsed into the public domain (https://en.wikipedia.org/wiki/Abdominal_aorta#/media/File:Gray531.png). (radiopaedia.org)
  • MDCTA using iodixanol is a promising, noninvasive alternative for evaluating patients with abdominal aortic disease. (nih.gov)
  • Tissue expression of the collagens was analysed in normal aorta (n = 6) and AAA (n = 6) by immunofluorescence. (diva-portal.org)
  • A aorta abdominal emitiu de sua superfície dorsal de 6 a 8 artérias lombares únicas. (ufrgs.br)