Angioplasty, Balloon: Use of a balloon catheter for dilation of an occluded artery. It is used in treatment of arterial occlusive diseases, including renal artery stenosis and arterial occlusions in the leg. For the specific technique of BALLOON DILATION in coronary arteries, ANGIOPLASTY, BALLOON, CORONARY is available.Angioplasty, Balloon, Coronary: Dilation of an occluded coronary artery (or arteries) by means of a balloon catheter to restore myocardial blood supply.Angioplasty: Reconstruction or repair of a blood vessel, which includes the widening of a pathological narrowing of an artery or vein by the removal of atheromatous plaque material and/or the endothelial lining as well, or by dilatation (BALLOON ANGIOPLASTY) to compress an ATHEROMA. Except for ENDARTERECTOMY, usually these procedures are performed via catheterization as minimally invasive ENDOVASCULAR PROCEDURES.Angioplasty, Laser: A technique utilizing a laser coupled to a catheter which is used in the dilatation of occluded blood vessels. This includes laser thermal angioplasty where the laser energy heats up a metal tip, and direct laser angioplasty where the laser energy directly ablates the occlusion. One form of the latter approach uses an EXCIMER LASER which creates microscopically precise cuts without thermal injury. When laser angioplasty is performed in combination with balloon angioplasty it is called laser-assisted balloon angioplasty (ANGIOPLASTY, BALLOON, LASER-ASSISTED).Stents: Devices that provide support for tubular structures that are being anastomosed or for body cavities during skin grafting.Recurrence: The return of a sign, symptom, or disease after a remission.Constriction, Pathologic: The condition of an anatomical structure's being constricted beyond normal dimensions.Coronary Disease: An imbalance between myocardial functional requirements and the capacity of the CORONARY VESSELS to supply sufficient blood flow. It is a form of MYOCARDIAL ISCHEMIA (insufficient blood supply to the heart muscle) caused by a decreased capacity of the coronary vessels.Coronary Angiography: Radiography of the vascular system of the heart muscle after injection of a contrast medium.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.Follow-Up Studies: Studies in which individuals or populations are followed to assess the outcome of exposures, procedures, or effects of a characteristic, e.g., occurrence of disease.Myocardial Infarction: NECROSIS of the MYOCARDIUM caused by an obstruction of the blood supply to the heart (CORONARY CIRCULATION).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.Iliac Artery: Either of two large arteries originating from the abdominal aorta; they supply blood to the pelvis, abdominal wall and legs.Vascular Patency: The degree to which BLOOD VESSELS are not blocked or obstructed.Atherectomy, Coronary: Percutaneous transluminal procedure for removing atheromatous plaque from the coronary arteries. Both directional (for removing focal atheromas) and rotational (for removing concentric atheromatous plaque) atherectomy devices have been used.Coronary Vessels: The veins and arteries of the HEART.Femoral Artery: The main artery of the thigh, a continuation of the external iliac artery.Graft Occlusion, Vascular: Obstruction of flow in biological or prosthetic vascular grafts.Time Factors: Elements of limited time intervals, contributing to particular results or situations.Popliteal Artery: The continuation of the femoral artery coursing through the popliteal fossa; it divides into the anterior and posterior tibial arteries.Coronary Artery Bypass: Surgical therapy of ischemic coronary artery disease achieved by grafting a section of saphenous vein, internal mammary artery, or other substitute between the aorta and the obstructed coronary artery distal to the obstructive lesion.Angiography: Radiography of blood vessels after injection of a contrast medium.Angina Pectoris: The symptom of paroxysmal pain consequent to MYOCARDIAL ISCHEMIA usually of distinctive character, location and radiation. It is thought to be provoked by a transient stressful situation during which the oxygen requirements of the MYOCARDIUM exceed that supplied by the CORONARY CIRCULATION.Thrombolytic Therapy: Use of infusions of FIBRINOLYTIC AGENTS to destroy or dissolve thrombi in blood vessels or bypass grafts.Prospective Studies: Observation of a population for a sufficient number of persons over a sufficient number of years to generate incidence or mortality rates subsequent to the selection of the study group.Carotid Stenosis: Narrowing or stricture of any part of the CAROTID ARTERIES, most often due to atherosclerotic plaque formation. Ulcerations may form in atherosclerotic plaques and induce THROMBUS formation. Platelet or cholesterol emboli may arise from stenotic carotid lesions and induce a TRANSIENT ISCHEMIC ATTACK; CEREBROVASCULAR ACCIDENT; or temporary blindness (AMAUROSIS FUGAX). (From Adams et al., Principles of Neurology, 6th ed, pp 822-3)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.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.Ischemia: A hypoperfusion of the BLOOD through an organ or tissue caused by a PATHOLOGIC CONSTRICTION or obstruction of its BLOOD VESSELS, or an absence of BLOOD CIRCULATION.Renal Artery Obstruction: Narrowing or occlusion of the RENAL ARTERY or arteries. It is due usually to ATHEROSCLEROSIS; FIBROMUSCULAR DYSPLASIA; THROMBOSIS; EMBOLISM, or external pressure. The reduced renal perfusion can lead to renovascular hypertension (HYPERTENSION, RENOVASCULAR).Retreatment: The therapy of the same disease in a patient, with the same agent or procedure repeated after initial treatment, or with an additional or alternate measure or follow-up. It does not include therapy which requires more than one administration of a therapeutic agent or regimen. Retreatment is often used with reference to a different modality when the original one was inadequate, harmful, or unsuccessful.Retrospective Studies: Studies used to test etiologic hypotheses in which inferences about an exposure to putative causal factors are derived from data relating to characteristics of persons under study or to events or experiences in their past. The essential feature is that some of the persons under study have the disease or outcome of interest and their characteristics are compared with those of unaffected persons.Atherectomy: Endovascular procedure in which atheromatous plaque is excised by a cutting or rotating catheter. It differs from balloon and laser angioplasty procedures which enlarge vessels by dilation but frequently do not remove much plaque. If the plaque is removed by surgical excision under general anesthesia rather than by an endovascular procedure through a catheter, it is called ENDARTERECTOMY.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.Coronary Restenosis: Recurrent narrowing or constriction of a coronary artery following surgical procedures performed to alleviate a prior obstruction.Intermittent Claudication: A symptom complex characterized by pain and weakness in SKELETAL MUSCLE group associated with exercise, such as leg pain and weakness brought on by walking. Such muscle limpness disappears after a brief rest and is often relates to arterial STENOSIS; muscle ISCHEMIA; and accumulation of LACTATE.Coronary Circulation: The circulation of blood through the CORONARY VESSELS of the HEART.Platelet Aggregation Inhibitors: Drugs or agents which antagonize or impair any mechanism leading to blood platelet aggregation, whether during the phases of activation and shape change or following the dense-granule release reaction and stimulation of the prostaglandin-thromboxane system.Leg: The inferior part of the lower extremity between the KNEE and the ANKLE.Ultrasonography, Interventional: The use of ultrasound to guide minimally invasive surgical procedures such as needle ASPIRATION BIOPSY; DRAINAGE; etc. Its widest application is intravascular ultrasound imaging but it is useful also in urology and intra-abdominal conditions.Endarterectomy, Carotid: The excision of the thickened, atheromatous tunica intima of a carotid artery.Beta Particles: High energy POSITRONS or ELECTRONS ejected from a disintegrating atomic nucleus.Hirudin Therapy: Use of HIRUDINS as an anticoagulant in the treatment of cardiological and hematological disorders.Coronary Thrombosis: Coagulation of blood in any of the CORONARY VESSELS. The presence of a blood clot (THROMBUS) often leads to MYOCARDIAL INFARCTION.Angina, Unstable: Precordial pain at rest, which may precede a MYOCARDIAL INFARCTION.Intracranial Arteriosclerosis: Vascular diseases characterized by thickening and hardening of the walls of ARTERIES inside the SKULL. There are three subtypes: (1) atherosclerosis with fatty deposits in the ARTERIAL INTIMA; (2) Monckeberg's sclerosis with calcium deposits in the media and (3) arteriolosclerosis involving the small caliber arteries. Clinical signs include HEADACHE; CONFUSION; transient blindness (AMAUROSIS FUGAX); speech impairment; and HEMIPARESIS.Myocardial Revascularization: The restoration of blood supply to the myocardium. (From Dorland, 28th ed)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.Peripheral Vascular Diseases: Pathological processes involving any one of the BLOOD VESSELS in the vasculature outside the HEART.Limb Salvage: An alternative to amputation in patients with neoplasms, ischemia, fractures, and other limb-threatening conditions. Generally, sophisticated surgical procedures such as vascular surgery and reconstruction are used to salvage diseased limbs.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.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.Hyperplasia: An increase in the number of cells in a tissue or organ without tumor formation. It differs from HYPERTROPHY, which is an increase in bulk without an increase in the number of cells.Ultrasonography, Doppler, Duplex: Ultrasonography applying the Doppler effect combined with real-time imaging. The real-time image is created by rapid movement of the ultrasound beam. A powerful advantage of this technique is the ability to estimate the velocity of flow from the Doppler shift frequency.Myocardial Reperfusion: Generally, restoration of blood supply to heart tissue which is ischemic due to decrease in normal blood supply. The decrease may result from any source including atherosclerotic obstruction, narrowing of the artery, or surgical clamping. Reperfusion can be induced to treat ischemia. Methods include chemical dissolution of an occluding thrombus, administration of vasodilator drugs, angioplasty, catheterization, and artery bypass graft surgery. However, it is thought that reperfusion can itself further damage the ischemic tissue, causing MYOCARDIAL REPERFUSION INJURY.Hypertension, Renovascular: Hypertension due to RENAL ARTERY OBSTRUCTION or compression.Fibrinolytic Agents: Fibrinolysin or agents that convert plasminogen to FIBRINOLYSIN.Cardiac Catheterization: Procedures in which placement of CARDIAC CATHETERS is performed for therapeutic or diagnostic procedures.Immunoglobulin Fab Fragments: Univalent antigen-binding fragments composed of one entire IMMUNOGLOBULIN LIGHT CHAIN and the amino terminal end of one of the IMMUNOGLOBULIN HEAVY CHAINS from the hinge region, linked to each other by disulfide bonds. Fab contains the IMMUNOGLOBULIN VARIABLE REGIONS, which are part of the antigen-binding site, and the first IMMUNOGLOBULIN CONSTANT REGIONS. This fragment can be obtained by digestion of immunoglobulins with the proteolytic enzyme PAPAIN.Coronary Artery Disease: Pathological processes of CORONARY ARTERIES that may derive from a congenital abnormality, atherosclerotic, or non-atherosclerotic cause.Amputation: The removal of a limb or other appendage or outgrowth of the body. (Dorland, 28th ed)Arteriovenous Shunt, Surgical: Surgical shunt allowing direct passage of blood from an artery to a vein. (From Dorland, 28th ed)Electrocardiography: Recording of the moment-to-moment electromotive forces of the HEART as projected onto various sites on the body's surface, delineated as a scalar function of time. The recording is monitored by a tracing on slow moving chart paper or by observing it on a cardioscope, which is a CATHODE RAY TUBE DISPLAY.Treatment Failure: A measure of the quality of health care by assessment of unsuccessful results of management and procedures used in combating disease, in individual cases or series.Risk Factors: An aspect of personal behavior or lifestyle, environmental exposure, or inborn or inherited characteristic, which, on the basis of epidemiologic evidence, is known to be associated with a health-related condition considered important to prevent.Coronary Stenosis: Narrowing or constriction of a coronary artery.Saphenous Vein: The vein which drains the foot and leg.Lower Extremity: The region of the lower limb in animals, extending from the gluteal region to the FOOT, and including the BUTTOCKS; HIP; and LEG.Carotid Artery Injuries: Damages to the CAROTID ARTERIES caused either by blunt force or penetrating trauma, such as CRANIOCEREBRAL TRAUMA; THORACIC INJURIES; and NECK INJURIES. Damaged carotid arteries can lead to CAROTID ARTERY THROMBOSIS; CAROTID-CAVERNOUS SINUS FISTULA; pseudoaneurysm formation; and INTERNAL CAROTID ARTERY DISSECTION. (From Am J Forensic Med Pathol 1997, 18:251; J Trauma 1994, 37:473)Fibromuscular Dysplasia: An idiopathic, segmental, nonatheromatous disease of the musculature of arterial walls, leading to STENOSIS of small and medium-sized arteries. There is true proliferation of SMOOTH MUSCLE CELLS and fibrous tissue. Fibromuscular dysplasia lesions are smooth stenosis and occur most often in the renal and carotid arteries. They may also occur in other peripheral arteries of the extremity.Heparin: A highly acidic mucopolysaccharide formed of equal parts of sulfated D-glucosamine and D-glucuronic acid with sulfaminic bridges. The molecular weight ranges from six to twenty thousand. Heparin occurs in and is obtained from liver, lung, mast cells, etc., of vertebrates. Its function is unknown, but it is used to prevent blood clotting in vivo and vitro, in the form of many different salts.Cineradiography: Motion picture study of successive images appearing on a fluoroscopic screen.Blood Vessel Prosthesis Implantation: Surgical insertion of BLOOD VESSEL PROSTHESES to repair injured or diseased blood vessels.Angioscopy: Endoscopic examination, therapy or surgery performed on the interior of blood vessels.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.Alloys: A mixture of metallic elements or compounds with other metallic or metalloid elements in varying proportions.Feasibility Studies: Studies to determine the advantages or disadvantages, practicability, or capability of accomplishing a projected plan, study, or project.Thrombosis: Formation and development of a thrombus or blood clot in the blood vessel.Embolism: Blocking of a blood vessel by an embolus which can be a blood clot or other undissolved material in the blood stream.Renal Artery: A branch of the abdominal aorta which supplies the kidneys, adrenal glands and ureters.Muscle, Smooth, Vascular: The nonstriated involuntary muscle tissue of blood vessels.Collateral Circulation: Maintenance of blood flow to an organ despite obstruction of a principal vessel. Blood flow is maintained through small vessels.Subclavian Steal Syndrome: A clinically significant reduction in blood supply to the BRAIN STEM and CEREBELLUM (i.e., VERTEBROBASILAR INSUFFICIENCY) resulting from reversal of blood flow through the VERTEBRAL ARTERY from occlusion or stenosis of the proximal subclavian or brachiocephalic artery. Common symptoms include VERTIGO; SYNCOPE; and INTERMITTENT CLAUDICATION of the involved upper extremity. Subclavian steal may also occur in asymptomatic individuals. (From J Cardiovasc Surg 1994;35(1):11-4; Acta Neurol Scand 1994;90(3):174-8)Tibial Arteries: The anterior and posterior arteries created at the bifurcation of the popliteal artery. The anterior tibial artery begins at the lower border of the popliteus muscle and lies along the tibia at the distal part of the leg to surface superficially anterior to the ankle joint. Its branches are distributed throughout the leg, ankle, and foot. The posterior tibial artery begins at the lower border of the popliteus muscle, lies behind the tibia in the lower part of its course, and is found situated between the medial malleolus and the medial process of the calcaneal tuberosity. Its branches are distributed throughout the leg and foot.Vertebrobasilar Insufficiency: Localized or diffuse reduction in blood flow through the vertebrobasilar arterial system, which supplies the BRAIN STEM; CEREBELLUM; OCCIPITAL LOBE; medial TEMPORAL LOBE; and THALAMUS. Characteristic clinical features include SYNCOPE; lightheadedness; visual disturbances; and VERTIGO. BRAIN STEM INFARCTIONS or other BRAIN INFARCTION may be associated.Hospital Mortality: A vital statistic measuring or recording the rate of death from any cause in hospitalized populations.Endarterectomy: Surgical excision, performed under general anesthesia, of the atheromatous tunica intima of an artery. When reconstruction of an artery is performed as an endovascular procedure through a catheter, it is called ATHERECTOMY.Life Tables: Summarizing techniques used to describe the pattern of mortality and survival in populations. These methods can be applied to the study not only of death, but also of any defined endpoint such as the onset of disease or the occurrence of disease complications.Anticoagulants: Agents that prevent clotting.Polytetrafluoroethylene: Homopolymer of tetrafluoroethylene. Nonflammable, tough, inert plastic tubing or sheeting; used to line vessels, insulate, protect or lubricate apparatus; also as filter, coating for surgical implants or as prosthetic material. Synonyms: Fluoroflex; Fluoroplast; Ftoroplast; Halon; Polyfene; PTFE; Tetron.Thrombectomy: Surgical removal of an obstructing clot or foreign material from a blood vessel at the point of its formation. Removal of a clot arising from a distant site is called EMBOLECTOMY.Blood Vessel Prosthesis: Device constructed of either synthetic or biological material that is used for the repair of injured or diseased blood vessels.Vascular Surgical Procedures: Operative procedures for the treatment of vascular disorders.Vascular Access Devices: Devices to be inserted into veins or arteries for the purpose of carrying fluids into or from a peripheral or central vascular location. They may include component parts such as catheters, ports, reservoirs, and valves. They may be left in place temporarily for therapeutic or diagnostic purposes.Patient Transfer: Interfacility or intrahospital transfer of patients. Intrahospital transfer is usually to obtain a specific kind of care and interfacility transfer is usually for economic reasons as well as for the type of care provided.Angiography, Digital Subtraction: A method of delineating blood vessels by subtracting a tissue background image from an image of tissue plus intravascular contrast material that attenuates the X-ray photons. The background image is determined from a digitized image taken a few moments before injection of the contrast material. The resulting angiogram is a high-contrast image of the vessel. This subtraction technique allows extraction of a high-intensity signal from the superimposed background information. The image is thus the result of the differential absorption of X-rays by different tissues.Cineangiography: Motion pictures of the passage of contrast medium through blood vessels.Emergencies: Situations or conditions requiring immediate intervention to avoid serious adverse results.Survival Analysis: A class of statistical procedures for estimating the survival function (function of time, starting with a population 100% well at a given time and providing the percentage of the population still well at later times). The survival analysis is then used for making inferences about the effects of treatments, prognostic factors, exposures, and other covariates on the function.Myocardial Ischemia: A disorder of cardiac function caused by insufficient blood flow to the muscle tissue of the heart. The decreased blood flow may be due to narrowing of the coronary arteries (CORONARY ARTERY DISEASE), to obstruction by a thrombus (CORONARY THROMBOSIS), or less commonly, to diffuse narrowing of arterioles and other small vessels within the heart. Severe interruption of the blood supply to the myocardial tissue may result in necrosis of cardiac muscle (MYOCARDIAL INFARCTION).Carotid Artery, Internal: Branch of the common carotid artery which supplies the anterior part of the brain, the eye and its appendages, the forehead and nose.Blood Flow Velocity: A value equal to the total volume flow divided by the cross-sectional area of the vascular bed.Risk Assessment: The qualitative or quantitative estimation of the likelihood of adverse effects that may result from exposure to specified health hazards or from the absence of beneficial influences. (Last, Dictionary of Epidemiology, 1988)Aspirin: The prototypical analgesic used in the treatment of mild to moderate pain. It has anti-inflammatory and antipyretic properties and acts as an inhibitor of cyclooxygenase which results in the inhibition of the biosynthesis of prostaglandins. Aspirin also inhibits platelet aggregation and is used in the prevention of arterial and venous thrombosis. (From Martindale, The Extra Pharmacopoeia, 30th ed, p5)Hirudins: Single-chain polypeptides of about 65 amino acids (7 kDa) from LEECHES that have a neutral hydrophobic N terminus, an acidic hydrophilic C terminus, and a compact, hydrophobic core region. Recombinant hirudins lack tyr-63 sulfation and are referred to as 'desulfato-hirudins'. They form a stable non-covalent complex with ALPHA-THROMBIN, thereby abolishing its ability to cleave FIBRINOGEN.Combined Modality Therapy: The treatment of a disease or condition by several different means simultaneously or sequentially. Chemoimmunotherapy, RADIOIMMUNOTHERAPY, chemoradiotherapy, cryochemotherapy, and SALVAGE THERAPY are seen most frequently, but their combinations with each other and surgery are also used.Equipment Design: Methods of creating machines and devices.Patient Selection: Criteria and standards used for the determination of the appropriateness of the inclusion of patients with specific conditions in proposed treatment plans and the criteria used for the inclusion of subjects in various clinical trials and other research protocols.Severity of Illness Index: Levels within a diagnostic group which are established by various measurement criteria applied to the seriousness of a patient's disorder.Survival Rate: The proportion of survivors in a group, e.g., of patients, studied and followed over a period, or the proportion of persons in a specified group alive at the beginning of a time interval who survive to the end of the interval. It is often studied using life table methods.Cerebral Angiography: Radiography of the vascular system of the brain after injection of a contrast medium.Platelet Glycoprotein GPIIb-IIIa Complex: Platelet membrane glycoprotein complex important for platelet adhesion and aggregation. It is an integrin complex containing INTEGRIN ALPHAIIB and INTEGRIN BETA3 which recognizes the arginine-glycine-aspartic acid (RGD) sequence present on several adhesive proteins. As such, it is a receptor for FIBRINOGEN; VON WILLEBRAND FACTOR; FIBRONECTIN; VITRONECTIN; and THROMBOSPONDINS. A deficiency of GPIIb-IIIa results in GLANZMANN THROMBASTHENIA.Carotid Artery, Common: The two principal arteries supplying the structures of the head and neck. They ascend in the neck, one on each side, and at the level of the upper border of the thyroid cartilage, each divides into two branches, the external (CAROTID ARTERY, EXTERNAL) and internal (CAROTID ARTERY, INTERNAL) carotid arteries.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.Radial Artery: The direct continuation of the brachial trunk, originating at the bifurcation of the brachial artery opposite the neck of the radius. Its branches may be divided into three groups corresponding to the three regions in which the vessel is situated, the forearm, wrist, and hand.Tissue Plasminogen Activator: A proteolytic enzyme in the serine protease family found in many tissues which converts PLASMINOGEN to FIBRINOLYSIN. It has fibrin-binding activity and is immunologically different from UROKINASE-TYPE PLASMINOGEN ACTIVATOR. The primary sequence, composed of 527 amino acids, is identical in both the naturally occurring and synthetic proteases.Ventricular Function, Left: The hemodynamic and electrophysiological action of the left HEART VENTRICLE. Its measurement is an important aspect of the clinical evaluation of patients with heart disease to determine the effects of the disease on cardiac performance.Premedication: Preliminary administration of a drug preceding a diagnostic, therapeutic, or surgical procedure. The commonest types of premedication are antibiotics (ANTIBIOTIC PROPHYLAXIS) and anti-anxiety agents. It does not include PREANESTHETIC MEDICATION.Intracranial Embolism: Blocking of a blood vessel in the SKULL by an EMBOLUS which can be a blood clot (THROMBUS) or other undissolved material in the blood stream. Most emboli are of cardiac origin and are associated with HEART DISEASES. Other non-cardiac sources of emboli are usually associated with VASCULAR DISEASES.Brachytherapy: A collective term for interstitial, intracavity, and surface radiotherapy. It uses small sealed or partly-sealed sources that may be placed on or near the body surface or within a natural body cavity or implanted directly into the tissues.Intraoperative Complications: Complications that affect patients during surgery. They may or may not be associated with the disease for which the surgery is done, or within the same surgical procedure.Randomized Controlled Trials as Topic: Works about clinical trials that involve at least one test treatment and one control treatment, concurrent enrollment and follow-up of the test- and control-treated groups, and in which the treatments to be administered are selected by a random process, such as the use of a random-numbers table.Cardiovascular Agents: Agents that affect the rate or intensity of cardiac contraction, blood vessel diameter, or blood volume.Registries: The systems and processes involved in the establishment, support, management, and operation of registers, e.g., disease registers.Radiology, Interventional: Subspecialty of radiology that combines organ system radiography, catheter techniques and sectional imaging.Chi-Square Distribution: A distribution in which a variable is distributed like the sum of the squares of any given independent random variable, each of which has a normal distribution with mean of zero and variance of one. The chi-square test is a statistical test based on comparison of a test statistic to a chi-square distribution. The oldest of these tests are used to detect whether two or more population distributions differ from one another.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.Peripheral Arterial Disease: Lack of perfusion in the EXTREMITIES resulting from atherosclerosis. It is characterized by INTERMITTENT CLAUDICATION, and an ANKLE BRACHIAL INDEX of 0.9 or less.Embolism, Cholesterol: Blocking of a blood vessel by CHOLESTEROL-rich atheromatous deposits, generally occurring in the flow from a large artery to small arterial branches. It is also called arterial-arterial embolization or atheroembolism which may be spontaneous or iatrogenic. Patients with spontaneous atheroembolism often have painful, cyanotic digits of acute onset.Streptokinase: Streptococcal fibrinolysin . An enzyme produced by hemolytic streptococci. It hydrolyzes amide linkages and serves as an activator of plasminogen. It is used in thrombolytic therapy and is used also in mixtures with streptodornase (STREPTODORNASE AND STREPTOKINASE). EC 3.4.-.Swine, Miniature: Genetically developed small pigs for use in biomedical research. There are several strains - Yucatan miniature, Sinclair miniature, and Minnesota miniature.Prognosis: A prediction of the probable outcome of a disease based on a individual's condition and the usual course of the disease as seen in similar situations.Predictive Value of Tests: In screening and diagnostic tests, the probability that a person with a positive test is a true positive (i.e., has the disease), is referred to as the predictive value of a positive test; whereas, the predictive value of a negative test is the probability that the person with a negative test does not have the disease. Predictive value is related to the sensitivity and specificity of the test.Diabetic Angiopathies: VASCULAR DISEASES that are associated with DIABETES MELLITUS.Radiography, Interventional: Diagnostic and therapeutic procedures that are invasive or surgical in nature, and require the expertise of a specially trained radiologist. In general, they are more invasive than diagnostic imaging but less invasive than major surgery. They often involve catheterization, fluoroscopy, or computed tomography. Some examples include percutaneous transhepatic cholangiography, percutaneous transthoracic biopsy, balloon angioplasty, and arterial embolization.Stroke Volume: The amount of BLOOD pumped out of the HEART per beat, not to be confused with cardiac output (volume/time). It is calculated as the difference between the end-diastolic volume and the end-systolic volume.Drug-Eluting Stents: Stents that are covered with materials that are embedded with chemicals that are gradually released into the surrounding milieu.Multivariate Analysis: A set of techniques used when variation in several variables has to be studied simultaneously. In statistics, multivariate analysis is interpreted as any analytic method that allows simultaneous study of two or more dependent variables.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).Stroke: A group of pathological conditions characterized by sudden, non-convulsive loss of neurological function due to BRAIN ISCHEMIA or INTRACRANIAL HEMORRHAGES. Stroke is classified by the type of tissue NECROSIS, such as the anatomic location, vasculature involved, etiology, age of the affected individual, and hemorrhagic vs. non-hemorrhagic nature. (From Adams et al., Principles of Neurology, 6th ed, pp777-810)Safety: Freedom from exposure to danger and protection from the occurrence or risk of injury or loss. It suggests optimal precautions in the workplace, on the street, in the home, etc., and includes personal safety as well as the safety of property.Prosthesis Design: The plan and delineation of prostheses in general or a specific prosthesis.Catheterization, Peripheral: Insertion of a catheter into a peripheral artery, vein, or airway for diagnostic or therapeutic purposes.Diatrizoate Meglumine: A versatile contrast medium used for DIAGNOSTIC X-RAY RADIOLOGY.Injections, Intra-Arterial: Delivery of drugs into an artery.Neointima: The new and thickened layer of scar tissue that forms on a PROSTHESIS, or as a result of vessel injury especially following ANGIOPLASTY or stent placement.Shock, Cardiogenic: Shock resulting from diminution of cardiac output in heart disease.Hemorrhage: Bleeding or escape of blood from a vessel.Vascular Diseases: Pathological processes involving any of the BLOOD VESSELS in the cardiac or peripheral circulation. They include diseases of ARTERIES; VEINS; and rest of the vasculature system in the body.Papaverine: An alkaloid found in opium but not closely related to the other opium alkaloids in its structure or pharmacological actions. It is a direct-acting smooth muscle relaxant used in the treatment of impotence and as a vasodilator, especially for cerebral vasodilation. The mechanism of its pharmacological actions is not clear, but it apparently can inhibit phosphodiesterases and it may have direct actions on calcium channels.Proportional Hazards Models: Statistical models used in survival analysis that assert that the effect of the study factors on the hazard rate in the study population is multiplicative and does not change over time.Gangrene: Death and putrefaction of tissue usually due to a loss of blood supply.Analysis of Variance: A statistical technique that isolates and assesses the contributions of categorical independent variables to variation in the mean of a continuous dependent variable.Phlebography: Radiographic visualization or recording of a vein after the injection of contrast medium.Double-Blind Method: A method of studying a drug or procedure in which both the subjects and investigators are kept unaware of who is actually getting which specific treatment.Ischemic Attack, Transient: Brief reversible episodes of focal, nonconvulsive ischemic dysfunction of the brain having a duration of less than 24 hours, and usually less than one hour, caused by transient thrombotic or embolic blood vessel occlusion or stenosis. Events may be classified by arterial distribution, temporal pattern, or etiology (e.g., embolic vs. thrombotic). (From Adams et al., Principles of Neurology, 6th ed, pp814-6)Budd-Chiari Syndrome: A condition in which the hepatic venous outflow is obstructed anywhere from the small HEPATIC VEINS to the junction of the INFERIOR VENA CAVA and the RIGHT ATRIUM. Usually the blockage is extrahepatic and caused by blood clots (THROMBUS) or fibrous webs. Parenchymal FIBROSIS is uncommon.Incidence: The number of new cases of a given disease during a given period in a specified population. It also is used for the rate at which new events occur in a defined population. It is differentiated from PREVALENCE, which refers to all cases, new or old, in the population at a given time.Multicenter Studies as Topic: Works about controlled studies which are planned and carried out by several cooperating institutions to assess certain variables and outcomes in specific patient populations, for example, a multicenter study of congenital anomalies in children.Laser Therapy: The use of photothermal effects of LASERS to coagulate, incise, vaporize, resect, dissect, or resurface tissue.Nicorandil: A derivative of the NIACINAMIDE that is structurally combined with an organic nitrate. It is a potassium-channel opener that causes vasodilatation of arterioles and large coronary arteries. Its nitrate-like properties produce venous vasodilation through stimulation of guanylate cyclase.Length of Stay: The period of confinement of a patient to a hospital or other health facility.Ioxaglic Acid: A low-osmolar, ionic contrast medium used in various radiographic procedures.Coronary Aneurysm: Abnormal balloon- or sac-like dilatation in the wall of CORONARY VESSELS. Most coronary aneurysms are due to CORONARY ATHEROSCLEROSIS, and the rest are due to inflammatory diseases, such as KAWASAKI DISEASE.Actuarial Analysis: The application of probability and statistical methods to calculate the risk of occurrence of any event, such as onset of illness, recurrent disease, hospitalization, disability, or death. It may include calculation of the anticipated money costs of such events and of the premiums necessary to provide for payment of such costs.Kaplan-Meier Estimate: A nonparametric method of compiling LIFE TABLES or survival tables. It combines calculated probabilities of survival and estimates to allow for observations occurring beyond a measurement threshold, which are assumed to occur randomly. Time intervals are defined as ending each time an event occurs and are therefore unequal. (From Last, A Dictionary of Epidemiology, 1995)Veins: The vessels carrying blood away from the capillary beds.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.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.Diabetes Complications: Conditions or pathological processes associated with the disease of diabetes mellitus. Due to the impaired control of BLOOD GLUCOSE level in diabetic patients, pathological processes develop in numerous tissues and organs including the EYE, the KIDNEY, the BLOOD VESSELS, and the NERVE TISSUE.Hospital Charges: The prices a hospital sets for its services. HOSPITAL COSTS (the direct and indirect expenses incurred by the hospital in providing the services) are one factor in the determination of hospital charges. Other factors may include, for example, profits, competition, and the necessity of recouping the costs of uncompensated care.Contrast Media: Substances used to allow enhanced visualization of tissues.Hemostatic Techniques: Techniques for controlling bleeding.Regression Analysis: Procedures for finding the mathematical function which best describes the relationship between a dependent variable and one or more independent variables. In linear regression (see LINEAR MODELS) the relationship is constrained to be a straight line and LEAST-SQUARES ANALYSIS is used to determine the best fit. In logistic regression (see LOGISTIC MODELS) the dependent variable is qualitative rather than continuously variable and LIKELIHOOD FUNCTIONS are used to find the best relationship. In multiple regression, the dependent variable is considered to depend on more than a single independent variable.Logistic Models: Statistical models which describe the relationship between a qualitative dependent variable (that is, one which can take only certain discrete values, such as the presence or absence of a disease) and an independent variable. A common application is in epidemiology for estimating an individual's risk (probability of a disease) as a function of a given risk factor.Vertebral Artery: The first branch of the SUBCLAVIAN ARTERY with distribution to muscles of the NECK; VERTEBRAE; SPINAL CORD; CEREBELLUM; and interior of the CEREBRUM.Pulmonary Veno-Occlusive Disease: Pathological process resulting in the fibrous obstruction of the small- and medium-sized PULMONARY VEINS and PULMONARY HYPERTENSION. Veno-occlusion can arise from fibrous proliferation of the VASCULAR INTIMA and VASCULAR MEDIA; THROMBOSIS; or a combination of both.Echocardiography: Ultrasonic recording of the size, motion, and composition of the heart and surrounding tissues. The standard approach is transthoracic.Dipyridamole: A phosphodiesterase inhibitor that blocks uptake and metabolism of adenosine by erythrocytes and vascular endothelial cells. Dipyridamole also potentiates the antiaggregating action of prostacyclin. (From AMA Drug Evaluations Annual, 1994, p752)Postoperative Period: The period following a surgical operation.Mesenteric Vascular Occlusion: Obstruction of the flow in the SPLANCHNIC CIRCULATION by ATHEROSCLEROSIS; EMBOLISM; THROMBOSIS; STENOSIS; TRAUMA; and compression or intrinsic pressure from adjacent tumors. Rare causes are drugs, intestinal parasites, and vascular immunoinflammatory diseases such as PERIARTERITIS NODOSA and THROMBOANGIITIS OBLITERANS. (From Juergens et al., Peripheral Vascular Diseases, 5th ed, pp295-6)Coated Materials, Biocompatible: Biocompatible materials usually used in dental and bone implants that enhance biologic fixation, thereby increasing the bond strength between the coated material and bone, and minimize possible biological effects that may result from the implant itself.Whole Blood Coagulation Time: The time required by whole blood to produce a visible clot.Arteries: The vessels carrying blood away from the heart.Exercise Test: Controlled physical activity which is performed in order to allow assessment of physiological functions, particularly cardiovascular and pulmonary, but also aerobic capacity. Maximal (most intense) exercise is usually required but submaximal exercise is also used.Costs and Cost Analysis: Absolute, comparative, or differential costs pertaining to services, institutions, resources, etc., or the analysis and study of these costs.Ticlopidine: An effective inhibitor of platelet aggregation commonly used in the placement of STENTS in CORONARY ARTERIES.Equipment Reuse: Further or repeated use of equipment, instruments, devices, or materials. It includes additional use regardless of the original intent of the producer as to disposability or durability. It does not include the repeated use of fluids or solutions.Disease-Free Survival: Period after successful treatment in which there is no appearance of the symptoms or effects of the disease.Hemodynamics: The movement and the forces involved in the movement of the blood through the CARDIOVASCULAR SYSTEM.Cardiology: The study of the heart, its physiology, and its functions.Angioscopes: Endoscopes used for viewing the interior of blood vessels.Carotid Artery Diseases: Pathological conditions involving the CAROTID ARTERIES, including the common, internal, and external carotid arteries. ATHEROSCLEROSIS and TRAUMA are relatively frequent causes of carotid artery pathology.Vasodilator Agents: Drugs used to cause dilation of the blood vessels.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.Acute Disease: Disease having a short and relatively severe course.Hospital Costs: The expenses incurred by a hospital in providing care. The hospital costs attributed to a particular patient care episode include the direct costs plus an appropriate proportion of the overhead for administration, personnel, building maintenance, equipment, etc. Hospital costs are one of the factors which determine HOSPITAL CHARGES (the price the hospital sets for its services).Renal Dialysis: Therapy for the insufficient cleansing of the BLOOD by the kidneys based on dialysis and including hemodialysis, PERITONEAL DIALYSIS, and HEMODIAFILTRATION.Evaluation Studies as Topic: Studies determining the effectiveness or value of processes, personnel, and equipment, or the material on conducting such studies. For drugs and devices, CLINICAL TRIALS AS TOPIC; DRUG EVALUATION; and DRUG EVALUATION, PRECLINICAL are available.Pulmonary Valve Stenosis: The pathologic narrowing of the orifice of the PULMONARY VALVE. This lesion restricts blood outflow from the RIGHT VENTRICLE to the PULMONARY ARTERY. When the trileaflet valve is fused into an imperforate membrane, the blockage is complete.
The endovascular management of blue finger syndrome. (1/1210)OBJECTIVES: To review our experience of the endovascular management of upper limb embolisation secondary to an ipsilateral proximal arterial lesion. DESIGN: A retrospective study. MATERIALS AND METHODS: Over 3 years, 17 patients presented with blue fingers secondary to an ipsilateral proximal vascular lesion. These have been managed using transluminal angioplasty (14) and arterial stenting (five), combined with embolectomy (two) and anticoagulation (three)/anti-platelet therapy (14). RESULTS: All the patients were treated successfully. There have been no further symptomatic embolic episodes originating from any of the treated lesions, and no surgical amputations. Complications were associated with the use of brachial arteriotomy for vascular access. CONCLUSIONS: Endovascular techniques are safe and effective in the management of upper limb embolic phenomena associated with an ipsilateral proximal focal vascular lesion. (+info)
Infrainguinal revascularisation in the era of vein-graft surveillance--do clinical factors influence long-term outcome? (2/1210)OBJECTIVES: To investigate the variables affecting the long-term outcome of infrainguinal vein bypass grafts that have undergone postoperative surveillance. DESIGN: A retrospective analysis. PATIENTS AND METHODS: Details of 299 consecutive infrainguinal vein grafts performed in 275 patients from a single university hospital were collected and analysed. All grafts underwent postoperative duplex surveillance. Factors affecting patency, limb salvage and survival rates were examined. These factors were gender, diabetes, hypertension, aspirin, warfarin, ischaemic heart disease, run-off, graft type, early thrombectomy, level of anastomoses and indication for surgery. RESULTS: The 6-year primary, primary assisted and secondary patency rates were 23, 47, and 57%, respectively. Six-year limb salvage and patient survival were 68 and 45%, respectively. Primary patency was adversely influenced by the use of composite vein grafts. Early thrombectomy was the only factor that significantly influenced secondary patency. Limb salvage was worse in diabetic limbs, limbs with poor run-off and in grafts that required early thrombectomy. Postoperative survival was better in males, claudicants and in patients who took aspirin. CONCLUSIONS: Although co-morbid factors did not influence graft patency rates, diabetes did adversely effect limb salvage. This study, like others before it, confirms that aspirin significantly reduces long-term mortality in patients undergoing infrainguinal revascularisation. (+info)
Endothelial implants inhibit intimal hyperplasia after porcine angioplasty. (3/1210)The perivascular implantation of tissue-engineered endothelial cells around injured arteries offers an opportunity to study fundamental vascular physiology as well as restore and improve tissue function. Cell source is an important issue because the ability to implant either xenogeneic or allogeneic cells would greatly enhance the clinical applications of tissue-engineered grafts. We investigated the biological and immunological responses to endothelial cell xenografts and allografts in pigs 4 weeks after angioplasty of the carotid arteries. Porcine or bovine aortic endothelial cells were cultured within Gelfoam matrices and implanted in the perivascular space of 42 injured arteries. Both porcine and bovine endothelial cell grafts reduced the restenosis index compared with control by 54% and 46%, respectively. Perivascular heparin release devices, formulated to release heparin at twice the rate of release of heparan sulfate proteoglycan from endothelial cell implants, produced no significant reduction in the restenosis index. Endothelial cell implants also reduced occlusive thrombosis compared with control and heparin release devices. Host immune responses to endothelial implants were investigated by immunohistochemical examination of explanted devices and by immunocytochemistry of serum samples. The bovine cell grafts displayed infiltration of leukocytes, consisting primarily of lymphocytes, and caused an increase in antibodies detected in serum samples. Reduced cellular infiltration and no humoral response were detected in animals that received allografts. Despite the difference in immune response, the biological effects of xenografts or allografts did not differ significantly. (+info)
Long-term functional status and quality of life after lower extremity revascularization. (4/1210)OBJECTIVE: The objective of this study was to assess the longer term (up to 7 years) functional status and quality of life outcomes from lower extremity revascularization. METHODS: This study was designed as a cross-sectional telephone survey and chart review at the University of Minnesota Hospital. The subjects were patients who underwent their first lower extremity revascularization procedure or a primary amputation for vascular disease between January 1, 1989, and January 31, 1995, who had granted consent or had died. The main outcome measures were ability to walk, SF-36 physical function, SF-12, subsequent amputation, and death. RESULTS: The medical records for all 329 subjects were reviewed after the qualifying procedures for details of the primary procedure (62.6% arterial bypass graft, 36.8% angioplasty, 0.6% atherectomy), comorbidities (64% diabetics), severity of disease, and other vascular risk factors. All 166 patients who were living were surveyed by telephone between June and August 1996. At 7 years after the qualifying procedure, 73% of the patients who were alive still had the qualifying limb, although 63% of the patients had died. Overall, at the time of the follow-up examination (1 to 7.5 years after the qualifying procedure), 65% of the patients who were living were able to walk independently and 43% had little or no limitation in walking several blocks. In a multiple regression model, patients with diabetes and patients who were older were less likely to be able to walk at follow-up examination and had a worse functional status on the SF-36 and a lower physical health on the SF-12. Number of years since the procedure was not a predictor in any of the analyses. CONCLUSION: Although the long-term mortality rate is high in the population that undergoes lower limb revascularization, the survivors are likely to retain their limb over time and have good functional status. (+info)
Economics of myocardial perfusion imaging in Europe--the EMPIRE Study. (5/1210)BACKGROUND: Physicians use myocardial perfusion imaging to a variable extent in patients presenting with possible coronary artery disease. There are few clinical data on the most cost-effective strategy although computer models predict that routine use of myocardial perfusion imaging is cost-effective. OBJECTIVES: To measure the cost-effectiveness of four diagnostic strategies in patients newly presenting with possible coronary artery disease, and to compare cost-effectiveness in centres that routinely use myocardial perfusion imaging with those that do not. METHODS: We have studied 396 patients presenting to eight hospitals for the diagnosis of coronary artery disease. The hospitals were regular users or non-users of myocardial perfusion imaging with one of each in four countries (France, Germany, Italy, United Kingdom). Information was gathered retrospectively on presentation, investigations, complications, and clinical management, and patients were followed-up for 2 years in order to assess outcome. Pre- and post-test probabilities of coronary artery disease were computed for diagnostic tests and each test was also assigned as diagnostic or part of management. Diagnostic strategies defined were: 1: Exercise electrocardiogram/coronary angiography, 2: exercise electrocardiogram/myocardial perfusion imaging/coronary angiography, 3: myocardial perfusion imaging/coronary angiography, 4: coronary angiography. Primary outcome measures were the cost and accuracy of diagnosis, the cost of subsequent management, and clinical outcome. Secondary measures included prognostic power, normal angiography rate, and rate of angiography not followed by revascularization. RESULTS: Mean diagnostic costs per patient were: strategy 1: 490 Pounds, 2: 409 Pounds, 3: 460 Pounds, 4: 1253 Pounds (P < 0.0001). Myocardial perfusion imaging users: 529 Pounds, non-users 667 Pounds (P = 0.006). Mean probability of the presence of coronary artery disease when the final clinical diagnosis was coronary artery disease present were, strategy 1: 0.85, 2: 0.82, 3: 0.97, 4: 1.0 (P < 0.0001), users 0.93, non-users 0.88 (P = 0.02), and when coronary artery disease was absent, 1: 0.26, 2: 0.22, 3: 0.16, 4: 0.0 (P < 0.0001), users 0.21, non-users 0.20 (P = ns). Total 2-year costs (coronary artery disease present/absent) were: strategy 1: 4453 Pounds/710 Pounds, 2: 3842 Pounds/478 Pounds, 3: 3768 Pounds/574 Pounds, 4: 5599 Pounds/1475 Pounds (P < 0.05/0.0001), users: 5563 Pounds/623 Pounds, non-users: 5428 Pounds/916 Pounds (P = ns/0.001). Prognostic power at diagnosis was higher (P < 0.0001) and normal coronary angiography rate lower (P = 0.07) in the scintigraphic centres and strategies. Numbers of soft and hard cardiac events over 2 years and final symptomatic status did not differ between strategy or centre. CONCLUSION: Investigative strategies using myocardial perfusion imaging are cheaper and equally effective when compared with strategies that do not use myocardial perfusion imaging, both for cost of diagnosis and for overall 2 year management costs. Two year patient outcome is the same. (+info)
Health-related quality of life after angioplasty and stent placement in patients with iliac artery occlusive disease: results of a randomized controlled clinical trial. The Dutch Iliac Stent Trial Study Group. (6/1210)BACKGROUND: To assess the quality of life in patients with iliac artery occlusive disease, we compared primary stent placement versus primary angioplasty followed by selective stent placement in a multicenter randomized controlled trial. METHODS AND RESULTS: Quality-of-life assessments were completed by 254 patients in a telephone interview. Assessment measures consisted of the RAND 36-Item Health Survey 1.0, time tradeoff, standard gamble, rating scale, health utilities index, and EuroQol-5D. The interviews were performed before treatment and after 1, 3, 12, and 24 months. When the 2 treatments were compared, no significant difference was observed (P>0.05). All measurements showed a significant improvement in the quality of life after treatment (P<0.05). The RAND 36-Item Health Survey measures physical functioning, role limitations caused by physical problems, and bodily pain and the EuroQol-5D were the most sensitive to the impact of revascularization. CONCLUSIONS: Health-related quality of life improves equally after primary stent placement and primary angioplasty with selective stent placement in the treatment of intermittent claudication caused by iliac artery occlusive disease. (+info)
Isolated inferior mesenteric artery revascularization for chronic visceral ischemia. (7/1210)PURPOSE: Complete visceral artery revascularization is recommended for the treatment of chronic visceral ischemia. However, in rare cases, it may not be possible to revascularize either the celiac or superior mesenteric (SMA) arteries. We have managed a series of patients with isolated revascularization of the inferior mesenteric artery (IMA) and now report our experience gained over a period of three decades. METHODS: Records were reviewed from 11 patients with chronic visceral ischemia who underwent isolated IMA revascularization (n = 8) or who, because of failure of concomitant celiac or SMA repairs, were functionally left with an isolated IMA revascularization (n = 3). All the patients had symptomatic chronic visceral ischemia documented with arteriography. Five patients had recurrent visceral ischemia after failed visceral revascularization, and two patients had undergone resection of ischemic bowel. The celiac or the SMA was unsuitable for revascularization in five cases, and extensive adhesions precluded safe exposure of the celiac or the SMA in five cases. IMA revascularization techniques included: bypass grafting (n = 4), transaortic endarterectomy (n = 4), reimplantation (n = 2), and patch angioplasty (n = 1). RESULTS: There was one perioperative death, and the remaining 10 patients had cured or improved conditions at discharge. One IMA repair thrombosed acutely but was successfully revascularized at reoperation. The median follow-up period was 6 years (range, 1 month to 13 years). Two patients had recurrent symptoms develop despite patent IMA repairs and required subsequent visceral revascularization; interruption of collateral circulation by prior bowel resection may have contributed to recurrence in both patients. Objective follow-up examination with arteriography or duplex scanning was available for eight patients at least 1 year after IMA revascularization, and all underwent patent IMA repairs. There were no late deaths as a result of bowel infarction. CONCLUSION: Isolated IMA revascularization may be useful when revascularization of other major visceral arteries cannot be performed and a well-developed, intact IMA collateral circulation is present. In this select subset of patients with chronic visceral ischemia, isolated IMA revascularization can achieve relief of symptoms and may be a lifesaving procedure. (+info)
Impact of race on the treatment for peripheral arterial occlusive disease. (8/1210)PURPOSE: The purpose of this study was to determine the impact of race on the treatment of peripheral artery occlusive disease (PAOD) and to examine the role of access to care and disease distribution on the observed racial disparity. METHODS: The study was performed as a retrospective analysis of hospital discharge abstracts from 1992 to 1995 in 202 non-federal, acute-care hospitals in the state of Florida. The subjects were patients older than 44 years of age who underwent major lower extremity amputation or revascularization (bypass grafting or angioplasty) for PAOD. The main outcome measures were incidence of intervention, incidence per demographic group, multivariate predictors of amputation versus revascularization, multivariate predictors of amputation versus revascularization among those patients with access to sophisticated care (hospital with arteriographic capabilities), and multivariate predictors of surgical bypass graft type (aortoiliac vs infrainguinal). RESULTS: A total of 51,819 procedures (9.1 per 10,000 population) were performed for PAOD during the study period and included 15,579 major lower extremity amputations (30.1%) and 36,240 revascularizations (69.9%). Although the incidence of a procedure for PAOD was comparable between African Americans and whites (9.0 vs 9.6 per 10, 000 demographic group), the incidence of amputation (5.0 vs 2.5 per 10,000 demographic group) was higher and the incidence of revascularization (4.0 vs 7.1 per 10,000 demographic group) was lower among African Americans. Furthermore, multivariate analysis results showed that African Americans (odds ratio, 3.79; 95% confidence interval [CI], 3.34 to 4.30) were significantly more likely than whites to undergo amputation as opposed to revascularization. The secondary multivariate analyses results revealed that African Americans (odds ratio, 2.29; 95% CI, 1.58 to 3. 33) were more likely to undergo amputation among those patients (n = 9193) who underwent arteriography during the procedural admission and to undergo infrainguinal bypass grafting (odds ratio, 2.00; 95% CI, 1.48 to 2.71) among those patients (n = 27,796) who underwent surgical bypass grafting. CONCLUSION: There is a marked racial disparity in the treatment of patients with PAOD that may be caused in part by differences in the severity of disease or disease distribution. (+info)
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I recently got into the Evangelion anime, and wanting some action figure representations of the main robots (rather than all the weird Rei/Asuka loli...
Subintimal recanalization is a key intervention for the treatment of CTO given the high technical success rate. The most difficult aspect of this method of recanalization is reentry into the true lumen distal to the diseased vessel segment. The SAFARI method serves to increase technical success in this regard and has proven to be an effective intervention for CTOs through the subintimal plane. If both wires are in the subintimal plane, a technique to increase technical success of connecting the antegrade and retrograde accesses includes the confluent balloon technique in which inflation of kissing antegrade and retrograde balloons creates one or more tears in the intima that allows communication between the two accesses. If one wire is in the true lumen and the other in the false lumen, the targeted reentry technique is a method that involves placement of a snare in the true lumen as a target for a reentry device in the false lumen. Another method to increase technical success of ...
Influence of stent-assisted angioplasty on cognitive function and affective disorder in elderly patients with symptomatic vertebrobasilar artery stenosis - Order reprints #890592
PCB has been used for BMS-ISR because previous studies have shown that PCB angioplasty is safe and effective in treating BMS-ISR (1). Although PCB is now widely used, there are few reports on intracoronary imaging of the drug-coated neointima after PCB angioplasty. In the current report, slow-flow phenomenon after PCB angioplasty was observed, and OCT and CAS nicely revealed drug-coated neointimal plaque after PCB angioplasty. To our knowledge, this is the first report of the case that slow-flow phenomenon occurred after PCB angioplasty and drug-coated neointimal plaque was evaluated by OCT and CAS. It was reported that PCB angioplasty was associated with diminished endothelial-dependent vasomotor function (2) and acute decrease in coronary flow reserve (3). In these cases, the slow-flow phenomenon after PCB angioplasty was partly caused by an impaired microvascular response as a result of drugs. In addition, CAS revealed white granular materials that might indicate undissolved drugs on the ...
Looking for angioplasty? Find out information about angioplasty. any surgical repair of a blood vessel, especially balloon angioplasty or percutaneous transluminal coronary angioplasty, a treatment of coronary artery... Explanation of angioplasty
Fingerprint Dive into the research topics of Comparing the embolic potential of open and closed cell stents during carotid angioplasty and stenting. Together they form a unique fingerprint. ...
This article includes the following sections: Carotid Angioplasty, Cerebral Arteries Angioplasty, Coronary Angioplasty, Peripheral Angioplasty
In carotid angioplasty, a long, hollow tube (catheter) is threaded through the arteries to the narrowed carotid artery in the neck. A filter is inserted to catch any debris that may break off during the procedure. Then, a tiny balloon at the end of the catheter is inflated to open the narrowed area.. ...
Coronary angioplasty is a medical procedure during which narrowed arteries that supply blood to the heart muscle are widened, to allow for improved flow of blood through these arteries to the heart, without the need for open heart surgery.The purpose of angioplasty is to widen narrowed or blocked arteries, so that enough blood can get to the heart to deliver the oxygen it
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A balloon angioplasty is when a catheter is inserted through an artery and guided to the place where the artery is narrowed. Depending on which artery is being treated, a stent may be inserted during the angioplasty.
Angioplasty is a type of Percutaneous Intervention but the two terms are often used to talk about the same procedure. Angioplasty is much like an angiogram procedure.
... often include relief of chest pain. This eMedTV article discusses the expected results of angioplasty and explains that arteries may not remain unblocked after the procedure.
Angioplasty is often recommended for people who have blocked arteries. Find out if angioplasty is for you in this article from Discovery Health.
Do you wonder on what is the angioplasty treatment cost in india. Justhealthx helps you to know better angioplasty price in india. Click here to learn more.
Featured Angioplasty News. Find breaking news, commentary, and archival information about Angioplasty From The tribunedigital-mcall (Page 4 of 5)
Infections that occur after an angioplasty are uncommon. This part of the eMedTV Web site describes how the use of sterile equipment reduces the risk of infections following angioplasty. If a patient does develop an infection, it is usually minor.
The department of radiology provides imaging services for procedures such as stenting or angioplasty, wherein a catheter is guided into clogged arteries. A small balloon accompanies the catheter to open the artery, thereby allowing blood flow to occur.. ...
Your groin or leg may have a bruise or a small lump where the catheter was put in your groin. The area may feel sore for a day or two after the procedure. You can do light activities around the house but nothing strenuous for several days.. After surgery, blood may flow better throughout your leg, which can decrease leg pain, numbness, and cramping.. ...
I would sincerely appreciate if a certified IRR coder/Vascular coder could help someone very rusty on this type coding verify my code choices, please/
Global Cerebral Balloon Angioplasty & Stent market report addresses the detail source of information which offers a telescopic view of the current and
The latest results from the longest-running study yet confirm that surgery is better than artery-opening angioplasty in preventing strokes caused by blockage of
Angioplasty risks are of two types - those that occur during the procedure, and those that occur a few months after the procedure. Read on to learn more.
Hello everyone, I just came back after an angioplasty with a stens implants. No heart attack or muscle damage. Just Chest pain. I am 54, been doing weights for many years, I cant live without working out. I was wondering if anyone has the same experience and how they manage to came back to the gym. Thanks in advance
Could anyone who had heat intolerace as a symptom and has had an angioplasty please comment about whether the symptom improved. If there was an improvement, was this an immediate effect or did it take a few days or weeks? ...
What does George W. Bush, Bill Clinton and Richard from Kent have in common? Theyve all had an angioplasty! Find out the full story and helpful tips.
39 pages. Binding is tight, covers and spine fully intact. Page edges a little browned. Covers protected in clear plastic sleeve. Quantity Available: 1. Categor
உலகளவில் ஒவ்வொரு ஆண்டும் இதயநாள அடைப்புக்காக கோடிக்கணக்கான மக்கள் ஆஞ்சியோ பிளாஸ்டி மூலம் சிகிச்சை பெறுகின்றனர்.
Background and aim: Cerebral hyperperfusion syndrome (CHS) including intracranial hemorrhage (ICH) is a serious complication after carotid artery stenting (CAS). Staged angioplasty (SAP), undersized-balloon angioplasty followed by delayed CAS, was reported to be a potential preventable method against CHS. The aim of this study was to clarify the efficacy of SAP to prevent CHS after endovascular carotid revascularization for high-risk patients of CHS.. Methods: The STOP CHS study is a multicenter, retrospective study which registered 535 high-risk patients of CHS from 45 Japanese centers, who underwent regular CAS, SAP or angioplasty performed by board-certified neurointerventionists between October 2007 and March 2014. Selection of high-risk patients of CHS was based on imaging tests, such as single-photon emission computed tomography with acetazolamide. We investigated the cumulative periprocedural rates of CHS, ICH and major adverse event (MAE: stroke, myocardial infarction and death) of ...
Information and advice on Carotid Artery Angioplasty from UK consultant vascular surgeon Shane MacSweeney of Nottinghams Queens Medical Centre.
The results of this study suggest that carotid stenting is as effective as carotid endarterectomy for middle-term prevention of ipsilateral stroke, but the safety of carotid stenting needs to be improved before it can be used as an alternative to carotid endarterectomy in patients with symptomatic c …
Carotid angioplasty (kuh-ROT-id AN-jee-o-plas-tee) is a procedure that opens clogged arteries to prevent or treat stroke. The carotid arteries are located on each side of your neck and are the main arteries supplying blood to your brain. The procedure involves temporarily inserting and inflating a tiny balloon where your carotid artery is clogged to widen the artery.
Angioplasty, also known as balloon angioplasty and percutaneous transluminal angioplasty (PTA), is a minimally invasive, endovascular procedure to widen narrowed or obstructed arteries or veins, typically to treat arterial atherosclerosis. A deflated balloon attached to a catheter (a balloon catheter) is passed over a guide-wire into the narrowed vessel and then inflated to a fixed size. The balloon forces expansion of the blood vessel and the surrounding muscular wall, allowing an improved blood flow. A stent may be inserted at the time of ballooning to ensure the vessel remains open, and the balloon is then deflated and withdrawn. Angioplasty has come to include all manner of vascular interventions that are typically performed percutaneously. The word is composed of the combining forms of the Greek words ἀγγεῖον angeîon "vessel" or "cavity" (of the human body) and πλάσσω plássō "form" or "mould". A coronary angioplasty is a therapeutic procedure to treat the stenotic ...
Background aims The aim of our study was to compare the effect of autologous stem cell therapy (SCT) and percutaneous transluminal angioplasty (PTA) on dia
Leg artery angioplasty. Coloured X-ray of the right superficial femoral artery at its junction with the popliteal artery, during angioplasty treatment of stenosis (narrowing) of the arteries in a 64-year-old man. An arterial endoprosthesis (stent, centre) has been inserted to hold open the artery. - Stock Image C037/0720
Leg artery angioplasty. X-ray of the right superficial femoral artery at its junction with the popliteal artery, during angioplasty treatment of stenosis (narrowing) of the arteries in a 64-year-old man. An arterial endoprosthesis (stent, centre) has been inserted to hold open the artery. - Stock Image C037/0718
With regard to the generalizability of the conclusions of this combined analysis to other established or proposed primary PCI programs, it should be noted that the vast majority of patients underwent primary PCI at established angioplasty centers. Although in the DANAMI 2 study, 3 of the 5 PCI centers had not performed primary PCI before study participation, in the 5 other studies, the PCI centers, most often high-volume centers, were already experienced in primary angioplasty before the study. From the standpoint of the combined analysis, it cannot therefore be assumed that primary angioplasty in low-volume centers by low-volume operators, particularly without prior experience of the technique, could achieve the overall success seen in this analysis.. The present combined analysis has a number of limitations. Although the literature was thoroughly searched, all recent international cardiac conferences were scrutinized and foreign colleagues from other interventional centers were consulted, it ...
... Summary The new report, Germany Airway Stenting Procedures Outlook to 2023, provides key procedures...
Patients who undergo bypass surgery for heart disease have better long-term survival rates than those who opt for less invasive procedures like angioplasty, a major US study showed on Tuesday.. The study looked at data from 190,000 US patients and found that those who had bypass surgery had a lower death rate in the first four years (16.4 percent) compared to those who had angioplasty (20.8 percent).. Bypass operations involve open heart surgery to create a detour around a blocked artery using a vein taken from somewhere else in the patients body.. The type of angioplasty examined in the study, known as percutaneous coronary intervention (PCI), involves a small incision to thread a balloon, a wire stent or a tube through the blocked artery to keep it open.. "Our study is the most general one ever done because it uses data from across the whole country. It is also much larger than any other study", said William Weintraub, chair of cardiology at Christiana Care Health System and the studys lead ...
The goal of an angioplasty is to unblock the artery and get blood flowing to the heart again. Other names that you may hear for an angioplasty are Percutaneous Coronary Intervention (PCI) and Percutaneous Transluminal Coronary Angioplasty (PTCA).
What is balloon angioplasty and stent placement? During balloon angioplasty a long, thin tube called a catheter is inserted through an artery in your groin or forearm, and a thin wire known as a guidewire is used to guide the catheter into th
Since the mid 1990s wire mesh stents have become a standard part of the angioplasty procedure. Unfortunately, these wire cylinders (stents) irritate the smooth muscle cells of the artery walls causing these cells to grow aggressively (to proliferate). This growth is an effort by the body to cover up the foreign metal that has just been introduced into the artery by the surgeon. This should not be surprising. Whenever an irritating alien material is placed in the body, cells grow around it in order to isolate the unfamiliar substance, which the body perceives as potentially harmful. The growth of the muscle cells (and blood clots) eventually closes 20% to 41% of the arteries containing these metal mesh stents.8 Furthermore, the use of stents results in no better survival than angioplasty alone7,9-and remember angioplasty does not improve the chances of living longer.3,4 If only treatments could be developed to stop these cells from growing. Scientists had to look no further than cancer therapy to ...
Want to know the best Angioplasty Surgery Hospital In Abu Dhabi? Indo American Health is tie up with best Hospital for Angioplasty Surgery in Abu Dhabi that are loaded with accredited facilities
Patients are wildly enthusiastic about these treatments. Thereve been focus groups with prospective patients who have stunningly exaggerated expectations of efficacy. Some believed that angioplasty would extend their life expectancy by 10 years! Angioplasty can save the lives of heart-attack patients. But for patients with stable coronary disease, who comprise a large share of angioplasty patients? It has not been shown to extend life expectancy by a day, let alone 10 years-and its done a million times a year in this country." Jones adds wryly, "If anyone does come up with a treatment that can extend anyones life expectancy by 10 years, let me know where I can invest ...
EU5 Airway Stenting Procedures Outlook to 2023 provides key procedures data on the EU5 Airway Stenting Procedures. The report provides procedure volumes within market segments - Malignant Airway Obstruction Stenting Procedures and Airway Stenting Procedures for Other Indications. The data in the report is derived from dynamic market forecast models. It uses epidemiology based models…
Carotid angioplasty and stenting - When the location of the narrowing or blockage is too difficult for the surgeon to access directly or when you have other health conditions that make surgery too risky, your doctor may recommend a procedure called carotid angioplasty and stenting. While youre under local anesthesia, a tiny balloon is threaded by catheter to the area where your carotid artery is clogged. It is then inflated to widen the artery, and a small wire mesh coil called a stent is inserted to keep the artery from narrowing again. ...
Information on coronary balloon angioplasty and stents. Angioplasty and stent placement is a non-surgical procedure performed to relieve narrowing or obstruction of the arteries to the muscles of the heart.
Angioplasty, or peripheral vascular angioplasty, is a medical procedure that opens narrowed or blocked blood vessels, arteries, or veins that is less invasive
Angioplasty is a surgical procedure in which very small balloons are inserted into blocked or partially blocked blood vessels ... A small stent can be inserted at the angioplasty site to keep the vessel open after the balloon's removal. Balloon catheters ... Berger, Alan (May 30, 2006). "Angioplasty". Medical Encyclopedia. MedlinePlus. Archived from the original on May 9, 2007. ...
Kollam Meditrina hospital conducted a live open heart angioplasty demonstration for the public at Quilon Beach Hotel in Kollam ...
There are a variety of types of surgery: Angioplasty and stent placement: A catheter is first inserted into the blocked/ ... "Angioplasty: MedlinePlus". www.nlm.nih.gov. Retrieved 2015-06-19. "Coronary artery bypass surgery". MedlinePlus. " ...
... and coronary angioplasty. The report concluded that £476 million in savings per year could be generated from the use of eight ...
A cutting balloon is an angioplasty device invented by Barath et al. used in percutaneous coronary interventions. It has a ... Barath P, Fishbein MC, Vari S, Forrester JS (1991). "cutting balloon: A novel approach to percutaneous angioplasty". Am J ... Lee M, Singh V, Nero T, Wilentz J (2002). "Cutting balloon angioplasty". J Invasive Cardiol. 14 (9): 552-6. PMID 12205358. Full ... Overview Coronary Artery Disease Treatment - Coronary Interventions ANGIOPLASTY, STENTS AND ATHERECTOMY (Cleveland Clinic) ...
Angioplasty dan stenting[sunting , sunting sumber]. Angioplasty dan stenting telah mulai dilirik sebagai kemungkinan pencegahan ... "Angioplasty and Stenting for Atherosclerotic Intracranial Stenosis: Rationale for a Randomized Clinical Trial". Neuroimaging ...
Vascular Balloon angioplasty/stent: Opening of narrow or blocked blood vessels using a balloon, with or without placement of ... ISBN 978-0-19-157556-3. Uberoi, Raman (2009). "7 Angioplasty and stenting". Interventional radiology. Oxford New York: Oxford ...
In the year ending June 2010, there were 899 hospitalizations for angioplasty, the most selected surgery. There were 1,000 C- ... Jenks, Susan (22 February 2011). "Angioplasty tops popular surgeries". Florida Today. Melbourne, Florida. pp. 1D. Official ...
Coronary angioplasty, also known as percutaneous transluminal coronary angioplasty (PTCA), because it is done through the skin ... The mortality rate during angioplasty is 1.2%. Sometimes chest pain can occur during angioplasty because the balloon briefly ... Angioplasty carried out shortly after an MI has a risk of causing a stroke, but this is less than the risk of a stroke ... While balloon angioplasty is still done as a part of nearly all percutaneous coronary interventions, it is rarely the only ...
In the year ending June 2010, there were 899 hospitalizations for angioplasty, the most selected surgery. Schweers, Jeff (March ... Jenks, Susan (22 February 2011). "Angioplasty tops popular surgeries". Florida Today. Melbourne, Florida. pp. 1D. Coordinates: ...
"Future Of Angioplasty - Dr Sandhu". "C3 Conference". "Dr Sandhu speaks about cardiac health". ... His clinical focus is in complex coronary interventions like Primary angioplasty, Bifurcation lesions, Chronic total occlusions ... His clinical focus is in complex coronary interventions like Primary angioplasty, Bifurcation lesions, Chronic total occlusions ...
Angioplasty 101 Angioplasty.Org "Archived copy". Archived from the original on 2010-12-05. Retrieved 2010-09-28. Michel, Thomas ... Intravascular Ultrasound - Angioplasty.Org Aoki J, Ong ATL, Granillo GAR, McFadden EP, van Mieghem CAG, Valgimigli M, Tsuchida ... Play media Treating a blocked ("stenosed") coronary artery with a stent follows the same steps as other angioplasty procedures ... angioplasty, or surgery study (MASS-II): a randomized, controlled clinical trial of three therapeutic strategies for ...
500,000 balloon angioplasty/stent/coronary procedures; 1M coronary catheterizations Recent successes in acute stroke care are ...
Angioplasty Peripheral vascular disease Reekers, JA; Bolia, A (Oct 1998). "Percutaneous intentional extraluminal (subintimal) ... "Subintimal angioplasty for peripheral arterial occlusive disease: a systematic review". Cardiovasc Intervent Radiol. 31 (4): ...
Angioplasty should be considered if severe blockage in lower leg vessels (tibial and peroneal artery) leads to gangrene. As ... "Angioplasty and stent placement - peripheral arteries". Retrieved July 24, 2013. Shi E. and Shofler D., Maggot debridement ... Efforts to treat the underlying cause may include bypass surgery or angioplasty. In certain cases hyperbaric oxygen therapy may ... via vascular bypass or angioplasty). However, once gangrene has developed, the affected tissues are not salvageable. Because ...
... angioplasty with or without stent insertion) or with thrombolysis ("clot buster" medication), whichever is available. In the ... Coronary interventions as angioplasty and coronary stent; Coronary artery bypass grafting (CABG) Statins, which reduce ... coronary angiography may be used to identify stenosis of the coronary arteries and suitability for angioplasty or bypass ...
"Interview with Szilard Voros, MD - Angioplasty.Org". Ptca.org. Retrieved 2011-08-08. "Szilard Voros". Wn.com. Retrieved 2011-08 ...
Gruentzig performed coronary angioplasties in 169 patients in Zurich, while teaching the practice of coronary angioplasty to a ... Angioplasty Percutaneous coronary intervention Mueller RL, Sanborn TA (1995). "The history of interventional cardiology: ... Angioplasty.Org History Center, celebrating a decade of independent cardiology news and education. ... Initial results with the Palmaz-Schatz stents were excellent when compared to balloon angioplasty, with a significantly lower ...
He later underwent a successful emergency angioplasty. Anderson is married to Rusa Chiu, a Jungian analyst in private practice ...
Brocail underwent angioplasty on March 11, 2006. He had complained of chest tightness that radiated into both arms. He already ...
Thrombolysis and Angioplasty in Myocardial Infarction-7". Circulation. 96 (6): 1776-82. doi:10.1161/01.cir.96.6.1776. PMID ...
1985) 6. First percutaneous transluminal coronary angioplasty (PTCA) in Taiwan. (July 1983) 7. The computer-monitored ...
Casagrande made angioplasty, surgical intervention to unblock arteries. The hospital did not say whether he had to put a stent ...
2006). "Angioplasty for symptomatic intracranial stenosis: clinical outcome". Stroke. 37 (4): 1016-20. doi:10.1161/01.STR. ... researchers from Stanford University found that intracranial angioplasty can be performed with an annual stroke rate in the ...
Angioplasty (PTA, or percutaneous transluminal angioplasty) can be done on solitary lesions in large arteries, such as the ... 2016). "Bypass versus angio plasty in severe ischaemia of the leg - 2 (BASIL-2) trial: study protocol for a randomised ... Patency rates following angioplasty are highest for iliac arteries, and decrease with arteries towards the toes. Other criteria ... There does not appear to be long term advantages or sustained benefit to placing a stent following angioplasty in order to hold ...
Angioplasty, also known as balloon angioplasty and percutaneous transluminal angioplasty (PTA), is a minimally invasive, ... Carotid angioplasty. Main article: Carotid artery stenting. Carotid artery stenosis is treated with angioplasty in a ... Peripheral angioplasty. Peripheral angioplasty refers to the use of a balloon to open a blood vessel outside the coronary ... Venous angioplasty. Angioplasty is occasionally used to treat venous stenosis, such as stenosis of the subclavian vein ...
There are various types of angioplasty. The specific names of these procedures are derived from the type of equipment used and ... Definition Angioplasty is a term describing a procedure used to widen vessels narrowed by stenoses or occlusions. ... Angioplasty Gale Encyclopedia of Medicine, 3rd ed. COPYRIGHT 2006 Thomson Gale. Angioplasty. Definition. Angioplasty is a term ... angioplasty (ăn´jēōplăs´tē), any surgical repair of a blood vessel, especially balloon angioplasty or percutaneous transluminal ...
Medical procedure used to widen blood vessels that have been narrowed or blocked. During the procedure, a balloon-tipped catheter is inserted into the body (usually through a small incision in the groin). The catheter is guided to the site of the blockage using X-rays and injected dye. The balloon on the catheter is then gently inflated to flatten the blockage and open the blood vessel ...
... balloon Balloon angioplasty is a medical technique used to widen coronary (heart) arteries that have been narrowed by plaque ( ... Angioplasty, Balloon Medical Discoveries COPYRIGHT 1997 Thomson Gale. Angioplasty, balloon. Balloon angioplasty is a medical ... Laser angioplasty is currently approved for use in leg arteries only. One drawback is that laser angioplasty carries a ... Angioplasty, also known as "Percutaneous Transluminal Coronary Angioplasty" (PTCA), rapidly came into widespread use around the ...
Health Information on Angioplasty: MedlinePlus Multiple Languages Collection ... Angioplasty: MedlinePlus Health Topic - English Angioplastía: Tema de salud de MedlinePlus - español (Spanish) ... Heart Cath and Heart Angioplasty - 简体中文 (Chinese, Simplified (Mandarin dialect)) Bilingual PDF ... Heart Cath and Heart Angioplasty - 繁體中文 (Chinese, Traditional (Cantonese dialect)) Bilingual PDF ...
Angioplasty is a procedure to restore blood flow through narrow or blocked arteries. Learn about how stents and angioplasty ... Angioplasty and stent - heart - discharge (Medical Encyclopedia) Also in Spanish * Angioplasty and stent placement - heart ( ... Angioplasty is a procedure to restore blood flow through the artery.. You have angioplasty in a hospital. The doctor threads a ... URL of this page: https://medlineplus.gov/angioplasty.html Angioplasty Also called: Balloon angioplasty ...
Performed on a coronary artery, angioplasty is a less invasive alternative to coronary bypass ... Angioplasty, therapeutic opening of a blocked blood vessel. Usually a balloon is inflated near the end of a catheter (see ... Angioplasty is also used to expand a severely obstructed heart valve.. Learn More in these related Britannica articles:. * ... Often angioplasty is combined with the placement of a stent, in which a small flexible mesh tube (usually made of metal) is ...
The procedure is similar to coronary angioplasty.. The individual undergoing an angioplasty enters the hospital the morning of ... After angioplasty, an observation period is required in a cardiac care unit or a hospital room for several hours up to two days ... If the angioplasty catheter is inserted into the femoral artery in the groin, the individual is instructed to lie flat and keep ... Angioplasty is a medical procedure used to widen an artery that is narrowed or blocked. A narrowed or blocked artery prevents ...
Angioplasty News and Research. RSS In angioplasty procedures, a balloon is fed through a catheter and used to prop open an ... Pairing a blood-thinning drug with aspirin daily for patients who have an angioplasty with a stent can contribute to better ... Personalized genetic testing helps reduce adverse events following balloon angioplasty An international, first-of-its-kind ... used personalized genetic testing to reduce by 34 per cent the number of serious adverse events following balloon angioplasty, ...
... is a keyhole surgery procedure for repairing damaged or diseased blood vessels. It involves the use of a catheter ... Coronary angioplasty. Coronary angioplasty is used to restore blood flow through a narrowed or blocked artery in the heart. It ... The disadvantage of angioplasty is that the artery may close again. If this happens, you will need a second angioplasty or ... When is coronary angioplasty done?. Your doctor may consider angioplasty if lifestyle changes and medicines do not improve your ...
Carotid angioplasty. In carotid angioplasty, a long, hollow tube (catheter) is threaded through the arteries to the narrowed ...
Angioplasty, also known as balloon angioplasty and percutaneous transluminal angioplasty (PTA), is a minimally invasive, ... Relative to surgery, angioplasty is a lower-risk option for the treatment of the conditions for which it is used, but there are ... Peripheral angioplasty refers to the use of a balloon to open a blood vessel outside the coronary arteries. It is commonly done ... The first coronary angioplasty with a drug delivery stents system was performed by Luis de la Fuente, at de Instituto Argentino ...
Create healthcare diagrams like this example called Coronary Angioplasty in minutes with SmartDraw. SmartDraw includes 1000s of ... Coronary Angioplasty. Create healthcare diagrams like this example called Coronary Angioplasty in minutes with SmartDraw. ... Coronary angioplasty is a medical procedure in which a balloon is used to open a blockage in a coronary (heart) artery narrowed ...
... is a procedure performed to improve blood flow to the kidney. A balloon catheter is ...
The region surrounding the balloon utilized in percutaneous transluminal coronary angioplasty is heated by means within the ... 1986, Laser Angioplasty: Success Remains Elusive Lasers & Applications, pp. 32 36.. 57. Jain, Jun. 1984, "Laser Angioplasty ... As mentioned hereinbefore, during percutaneous transluminal coronary angioplasty or indeed any type of balloon angioplasty and ... Angioplasty balloon with light incisor. US5662712 *. Jun 7, 1995. Sep 2, 1997. Focal, Inc.. Apparatus for intraluminal ...
Giving enterprise software practices an angioplasty. With all the recent coverage of Web 2.0 and the enterprise, one of the ...
... coronary angioplasty to widen an artery blocked by plaque. See more. ... Angioplasty definition, the repair of a blood vessel, as by inserting a balloon-tipped catheter to unclog it or by replacing ... coronary angioplasty to widen an artery blocked by plaque. ...
... perceived the potential benefits of elective angioplasty to open arteries narrowed by cholesterol-filled plaque. ... Some of the 1,400 angioplasty patients Baystate hopes to enroll will face angioplasty for an acute heart attack; others for ... Angioplasty Not for All Heart Patients... But Do They Know?. *. By JANE E. ALLEN ... Patients Need More Info About Angioplasty, Doctors Say. "While the study was done in just one center, it rings true and the ...
Reuters Health) - People who quit smoking after a balloon angioplasty to improve blood flow to the heart live an average of two ... NEW YORK (Reuters Health) - People who quit smoking after a balloon angioplasty to improve blood flow to the heart live an ... During coronary balloon angioplasty, also known as percutaneous coronary intervention (PCI), a balloon-tipped catheter is ... Researchers found people who were undergoing balloon angioplasty in their 50s, on average, and quit smoking within one year ...
An angioplasty is done to open an artery blocked by plaque and restore blood flow to the heart. ... Angioplasty is a medical procedure used to open an artery that is narrow or blocked. Over time, plaque can build up in the ... How Angioplasty Works. Angioplasty is performed with a catheter, which is a thin tube that is inserted into the artery. This ... Angioplasty News. Angioplasty is a medical procedure used to open an artery that is narrow or blocked. Over time, plaque can ...
The angioplasty was done to the popliteal artery. The code I would use would be 37224.. HTH. Heather Shaw, CPC, CIRCC ... Status post balloon angioplasty with a 5.0 followed by a 6.0 balloon now. reveals less than 10% residual stenosis, markedly ... angioplasty was performed to 14 atmospheres for severe diffuse in-stent. restenosis. Stenting was from popliteal to proximal ... Diagnostic Aortogram w/runoff w/percutaneous angioplasty lt peroneal w/left SFA. By armedical in forum Cardiology ...
Progressive Angioplasty Systems, Inc.. Catheter for balloon angioplasty. US4857046 *. 21 Oct 1987. 15 Aug 1989. Cordis ... Progressive Angioplasty Systems, Inc.. Catheter for balloon angioplasty. US4942788 *. 26 Jul 1989. 24 Jul 1990. Interventional ... Balloon angioplasty has been used with success, but patient selection criteria are restrictive. Also, balloon angioplasty, ... The electrodynamic transluminal angioplasty system of claim 1 further comprising a guide sheath which is introduced into the ...
An electronically monitored angioplasty system is provided with a verifier circuit to verify the operation of conversion ... 1. An angioplasty system comprising:. an angioplasty syringe with an outlet connectable to a balloon catheter having a balloon ... An electronically monitored angioplasty system 10 is shown in FIG. 1. System 10 includes an angioplasty syringe 12 in a housing ... A method for verifying operation of an angioplasty system having an angioplasty syringe connected to a balloon catheter ...
Angioplasty catheter. US4784132 *. Sep 5, 1985. Nov 15, 1988. Fox Kenneth R. Method of and apparatus for laser treatment of ... 7. The angioplasty system of claim 6 wherein said OH- radical is present in the core at a concentration of 200-2000 parts per ... Angioplasty catheter and method for use thereof. US4641650 *. Mar 11, 1985. Feb 10, 1987. Mcm Laboratories, Inc.. Probe-and- ... Mehta et al, Excimer Laser Coronary Angioplasty, CARDIO, Nov. 1991.. 26. *. P. Kaiser et al, B.S.T.J. Brief: A New Optical ...
... also called percutaneous transluminal angioplasty, or PTA) is a procedure in which a thin, flexible tube called a catheter is ... Angioplasty for Peripheral Arterial Disease of the Legs. Treatment Overview. Angioplasty (also called percutaneous transluminal ... Angioplasty can restore blood flow and relieve intermittent claudication.1 Angioplasty can help you walk farther without leg ... In angioplasty of the aorta (the major abdominal artery) or the iliac arteries (which branch off from the aorta), a small, ...
UnderwentPlacementBlockagePerform angioplastyPeripheralComplicationsAnginaStentingCardiacBypass SurgeryWidenAtherosclerosisEmergency angioplastyPlaque against the artery wallBalloon is inflatedVesselCentersSite of the angioplastyPeople who have angioplastyClot-dissoIntermittent claudicationSimple balloon angioplastyRisksFemoralClaim 1 whereinAcute myocardialCatheter is insertedMinimallyTreatmentGoal of angioplastyBenefits of angioplastyBloodRelieveChest painOpen an arteryCoronary angiogramPost-angioplastyUndergo angioplastyInserted into the artery
- To determine whether or not quitting smoking is tied to increased life expectancy after heart surgery, van Domburg and his colleagues collected data on 806 patients who underwent balloon angioplasty at Erasmus Medical Center between 1980 and 1985. (reuters.com)
- In a study of more than 2,000 patients, those receiving only drug therapy had the same number of heart attacks, strokes and deaths as those who received the medication and underwent artery-opening angioplasty, researchers from the Department of Veterans Affairs told a meeting of the American College of Cardiology. (latimes.com)
- Half the patients also underwent angioplasty, and most of them received a stent -- a wire-mesh tube inserted into the artery to hold it open after the balloon is withdrawn. (latimes.com)
- My mother-in-law underwent Angioplasty on September 23rd 2003, can she travel in bus overnight? (wisegeek.com)
- The study enrolled patients who underwent angioplasty within one to three hours of symptoms. (medpagetoday.com)
- The trial included nearly 300 patients at 24 hospitals in four countries who underwent angioplasty and stenting after ST-elevation myocardial infarction, the most severe type of heart attack. (eurekalert.org)
- Other instances of stent overuse include a case in which 141 patients underwent unneeded angioplasties at Westmoreland Hospital in Western Pennsylvania in 2010. (newsinferno.com)
- Often angioplasty is combined with the placement of a stent , in which a small flexible mesh tube (usually made of metal) is inserted inside the narrowed artery to hold the vessel open. (britannica.com)
- Angioplasty is generally combined with the stable placement of a small wire mesh tube called a stent to help prop the artery open and reduce its chance of narrowing again. (apollohospitals.com)
- In angioplasty, a thin tube called a catheter with a balloon or other device on the end is first threaded through a blood vessel in the arm or groin (upper thigh) up to the site of a narrowing or blockage in a coronary artery. (daviddarling.info)
- The blockage can be reached by angioplasty. (daviddarling.info)
- Once there is a clear image of the blockage, your doctor begins the angioplasty. (kswo.com)
- Dye is injected, X-rays are taken, and if a blockage occurs, the same catheter is equipped with a balloon that can be inflated to squash the blockage into the blood vessel wall, reopening it and re-establishing blood supply to the heart muscle (coronary balloon angioplasty ). (medicinenet.com)
- During a balloon angioplasty, a metal stent is put in place to prevent blockage and increase blood flow. (wisegeek.com)
- I assume that the balloon treatment for a 'slight blockage' that you are referring to is an angioplasty. (netdoctor.co.uk)
- Sometimes there is inflammation of the wall of the artery where the balloon was inflated, and this can lead to a recurrence of the blockage and would necessitate either a further angioplasty or another treatment, such as a stent insertion. (netdoctor.co.uk)
- If your doctor finds a blockage during your Coronary Angiogram, it is possible that he or she may decide to perform angioplasty and stenting immediately after the angiogram, while your heart is still catheterized. (apollohospitals.com)
- A renal angioplasty is a way of relieving a blockage in the renal artery, the main blood vessel to the kidney, without having an operation. (ucsd.edu)
- For an uncomplicated blockage in a single coronary artery, angioplasty is becoming the first choice for most cardiologists and their patients. (harvard.edu)
- FRIDAY, Aug. 28 -- The latest results from the longest-running study yet confirm that surgery is better than artery-opening angioplasty in preventing strokes caused by blockage of the carotid artery, the largest vessel carrying blood to the brain. (drugs.com)
- Implanting a stent -- a flexible tube that helps keep the artery open -- did reduce the incidence of blockage by about half in those who had angioplasty. (drugs.com)
- Restenosis refers to a gradual re-narrowing of a coronary artery after a blockage has been treated with angioplasty and stenting . (verywellhealth.com)
- Since the decision to perform angioplasty may have been made following a diagnostic angiogram, the patient's sensitivity to iodinated contrast media is likely to be known. (encyclopedia.com)
- In the rush to perform angioplasty, the effectiveness of drug treatment "was lost in the shuffle. (latimes.com)
- Often, peripheral angioplasty is used in conjunction with guide wire, peripheral stenting and an atherectomy . (wikipedia.org)
- Percutaneous transluminal angioplasty (PTA) of the renal artery has become an increasingly widespread peripheral vascular intervention for the treatment of renovascular hypertension (HTN). (medscape.com)
- In these cases, the technique is known as peripheral angioplasty . (wisegeek.com)
- What do I need to know about peripheral vascular angioplasty? (drugs.com)
- How do I prepare for peripheral vascular angioplasty? (drugs.com)
- What will happen during peripheral vascular angioplasty? (drugs.com)
- What are the risks of peripheral vascular angioplasty? (drugs.com)
- The 2-year Levant 2 study data showed non-inferiority of the device and a trend towards superiority, compared to standard percutaneous transluminal angioplasty, in the treatment of peripheral artery disease, the company said. (medworm.com)
- Angioplasty and stenting are minimally invasive, endovascular treatments for coronary artery disease and peripheral artery disease (PAD) . (hopkinsmedicine.org)
- Angioplasty may be performed for coronary artery disease or peripheral artery disease. (hopkinsmedicine.org)
- Complications, including embolisms and tearing, are rare with angioplasty. (britannica.com)
- This means that angioplasty can be performed without open surgery, which reduces the risk for complications. (healthday.com)
- Relative to surgery, angioplasty is a lower-risk option for the treatment of the conditions for which it is used, but there are unique and potentially dangerous risks and complications associated with angioplasty: Embolization, or the launching of debris into the bloodstream Arterial rupture from over-inflation of a balloon catheter or the use of an inappropriately large or stiff balloon, or the presence of a calcified target vessel. (wikipedia.org)
- After angioplasty, most patients are monitored overnight in the hospital, but if there are no complications, patients are sent home the following day. (wikipedia.org)
- This is a rare but real complications with coronary angioplasty and stenting. (medhelp.org)
- Having an angioplasty within the first hours after a heart attack may reduce your risk of complications. (healthline.com)
- The Singh rule helps the clinician appreciate the importance of increasing age, shock, left main coronary artery lesion and renal disease as risk factors for complications from angioplasty. (aafp.org)
- A related article, which also includes the risk calculator for angioplasty complications, appears in the November 15, 2004, issue of AFP , pages 1966-1968. (aafp.org)
- Development and validation of simplified predictive index for major complications in contemporary percutaneous transluminal coronary angioplasty practice. (aafp.org)
- Are there complications after an angioplasty? (howstuffworks.com)
- If you've had a planned angioplasty with no complications you may be able to return to work within a few days, depending on the type of work you do. (bhf.org.uk)
- Angioplasty is done on more than one million people a year in the United States, and it has few serious complications, according to The National Heart, Lung and Blood Institute. (reference.com)
- The research team, led by Dr. Michael B. Rothberg, found that most chronic angina patients overestimated the benefits of angioplasty, even when they had read material provided by their doctors. (go.com)
- The only difference was a slight improvement in quality of life for those receiving angioplasty because of fewer chest pains, known as angina. (latimes.com)
- The only difference between the two groups was that angioplasty patients had fewer symptoms of angina -- although even that difference was not as large as had been expected. (latimes.com)
- After three years, 67% of those in the angioplasty group were free of angina, compared to 62% in the medication-only group. (latimes.com)
- If diet and medication do not control angina, your doctor will probably recommend a balloon angioplasty. (wisegeek.com)
- Your doctor might suggest angioplasty as a treatment option when medications or lifestyle changes aren't enough to improve your heart health, or if you have a heart attack, worsening chest pain (angina) or other symptoms. (apollohospitals.com)
- Angioplasty can help to relieve angina symptoms and is also used as an emergency treatment for people who've had a heart attack . (bhf.org.uk)
- Atherosclerotic obstruction of the renal artery can be treated with angioplasty with or without stenting of the renal artery. (wikipedia.org)
- During carotid angioplasty (also called carotid artery stenting), a small, expandable tube called a stent is permanently inserted into the carotid artery. (healthlinkbc.ca)
- This clinical trial tested coronary angioplasty and stenting versus optimal medical management in patients with single-vessel coronary artery disease. (sciencebasedmedicine.org)
- 3. Many people complain of vague chest pains following stenting or angioplasty. (medhelp.org)
- Advise patients who ask about bleeding with angioplasty that drugs used to treat ischemia can increase risk of bleeding associated with stenting and other percutaneous interventions. (medpagetoday.com)
- It can be difficult for someone who has undergone angioplasty or stenting to get back to their lives right away. (medtronic.com)
- Angioplasty and stenting can widen the space inside the artery to restore blood flow and help prevent heart attack or amputation. (hopkinsmedicine.org)
- Angioplasty is sometimes done alone, without stenting. (hopkinsmedicine.org)
- Why choose Johns Hopkins Heart & Vascular Institute for angioplasty and stenting? (hopkinsmedicine.org)
- In 28 angioplasty cases, researchers used a protection device to temporarily block the vessel at the site of the angioplasty and stenting. (bio-medicine.org)
- Generally, carotid artery stenosis is treated with angioplasty and stenting for high-risk patients in many hospitals. (wikidoc.org)
- Angioplasty and stenting is increasingly being used to also treat carotid stenosis, with success rates similar to carotid endarterectomy surgery . (wikidoc.org)
- Simple angioplasty without stenting is falling out of favor in this vascular bed . (wikidoc.org)
- After angioplasty, an observation period is required in a cardiac care unit or a hospital room for several hours up to two days. (faqs.org)
- A cardiac monitor is used to monitor the patient's heart pattern, rate, and rhythm after coronary angioplasty. (faqs.org)
- The fact that therapeutic coronary angioplasty is carried out in a cardiac catheterization laboratory which is by definition optimally equipped for the measurement of hemodynamic parameters, has probably also contributed to the effectuation of these investigations. (springer.com)
- Cardiac catheterization is a necessary part of an angioplasty, allowing the surgeon to locate the narrowed portion of the coronary artery. (reference.com)
- Nallamothu notes that public policy can also play a role - such as the state of Michigan's recent requirement that hospitals newly licensed to perform emergency angioplasty without on-site cardiac surgery be able to do it around the clock, 7 days a week. (emaxhealth.com)
- To find out if coronary angioplasty is the most suitable operation for you, you will first need to have an examination called cardiac catheterisation. (spirehealthcare.com)
- Sometimes cardiac catheterisation progresses straight to angioplasty during the same operation. (spirehealthcare.com)
- Coronary angioplasty takes place in the cardiac catheterization (cath) laboratory at the hospital. (virtua.org)
- He is a spokesman for the Society for Cardiac Angiography and Interventions, doctors who do angioplasties. (pressherald.com)
- WASHINGTON (May 11, 2015) -- Hospitals in the Midwest were more likely than others to refer patients for guideline-recommended cardiac rehabilitation following angioplasty, possibly because more rehab programs are available in the region, according to original research and an accompanying editorial published today in the Journal of the American College of Cardiology ( JACC ). (eurekalert.org)
- In the past, prior to when Centers for Medicare and Medicaid Services granted reimbursement for these services, it was understandable that physicians did not always refer patients to cardiac rehab following angioplasty. (eurekalert.org)
- On average, about 60 percent of all patients undergoing angioplasty were referred for cardiac rehabilitation. (eurekalert.org)
- Since the Centers for Medicare and Medicaid Services have incorporated referral to cardiac rehabilitation after angioplasty as a publicly reported performance measure as of 2014, there is an impetus to assess the determinants of under-referral," said Krishna G. Aragam, M.D., M.S., the study's lead author and a clinical and research fellow in the Cardiology Division at Massachusetts General Hospital. (eurekalert.org)
- Patients who had had a heart attack prior to the angioplasty were referred to cardiac rehabilitation at a rate of 66 percent, which is higher than referrals for the general population. (eurekalert.org)
- After six months, 11 percent of those who had quick angioplasty had a major adverse cardiac event or died, compared to 17.2 percent of those assigned to standard treatment. (bio-medicine.org)
- Coronary Artery Disease: Angioplasty or Bypass Surgery? (medlineplus.gov)
- Performed on a coronary artery , angioplasty is a less invasive alternative to coronary bypass surgery in the treatment of coronary heart disease . (britannica.com)
- Angioplasty is less radical alternative to open heart or bypass surgery. (daviddarling.info)
- Angioplasty is an alternative to coronary bypass surgery, which is a major operation. (daviddarling.info)
- In some cases, a patient might benefit more from a coronary bypass surgery than from angioplasty. (howstuffworks.com)
- Angioplasty may also cut the odds that you could need more invasive open-heart bypass surgery , which requires a significantly longer recovery time. (healthline.com)
- If the main artery that brings blood to the left side of your heart is narrow, if your heart muscle is weak or if you have multiple diseased blood vessels, then coronary artery bypass surgery may be a better option than angioplasty. (apollohospitals.com)
- Angioplasty or bypass surgery? (harvard.edu)
- A number of large studies show that survival after angioplasty is as good as after bypass surgery. (harvard.edu)
- Up to one-quarter of people who have angioplasty must have it repeated, or have bypass surgery, within a few years. (harvard.edu)
- But after four years, more angioplasty patients had died versus those who had bypass surgery. (pressherald.com)
- But after four years, nearly 21 percent of the angioplasty patients had died versus about 16 percent of those who had bypass surgery. (pressherald.com)
- A very small percentage of patients who have angioplasty also need emergency bypass surgery. (howstuffworks.com)
- These patients need repeat angioplasty or coronary bypass surgery within 6 months. (howstuffworks.com)
- Hematoma or pseudoaneurysm formation at the access site Radiation Injuries Radiation induced injuries (burns) from the X-Rays used Angioplasty may also provide a less durable treatment for atherosclerosis, and be more prone to restenosis, relative to vascular bypass or coronary artery bypass grafting. (wikipedia.org)
- Angioplasty is performed to treat a type of heart disease called atherosclerosis. (apollohospitals.com)
- The risks of an emergency angioplasty after a heart attack are greater than those of an angioplasty performed under different circumstances. (healthline.com)
- Now, a national study based on data from 37,233 patients casts a shadow on this practice of "part-time" emergency angioplasty. (emaxhealth.com)
- In the Jan. 17 Circulation, a team led by University of Michigan and Yale University cardiologists reports that patients are less likely to die during their hospital stay, and will receive faster treatment, if they have their emergency angioplasty at hospitals where it is the "default" treatment, used on the vast majority of heart attack patients. (emaxhealth.com)
- By contrast, the in-hospital death risk and risk of delayed treatment were both higher for angioplasty patients treated at hospitals where emergency angioplasty was used in a minority of heart-attack patients. (emaxhealth.com)
- Many waited far longer than the 90 minute "window" during which emergency angioplasty is thought to have an edge over clot-busting drugs. (emaxhealth.com)
- Surprisingly, the study also suggests that hospitals' level of "specialization" in emergency angioplasty has more to do with patient survival than the sheer number of emergency angioplasties performed there each year. (emaxhealth.com)
- In the case of emergency angioplasty, for hospitals it seems that it's not just how many you do, but how used to doing them you are," says lead author Brahmajee Nallamothu, M.D., MPH, an assistant professor of internal medicine at the U-M Medical School, researcher at the VA Ann Arbor Healthcare System and member of the U-M Cardiovascular Center. (emaxhealth.com)
- The new paper, the authors say, suggests that hospitals where the "default" emergency heart attack treatment is clot-busting drugs (fibrinolytics) may want to focus on optimizing that approach, or determine better ways to institute emergency angioplasty protocols and staffing for around-the-clock care. (emaxhealth.com)
- Increasingly in Michigan, small and mid-sized hospitals are making the effort to get a state license for emergency angioplasty without having a heart surgeon available as backup - which brings with it regular monitoring of patient outcomes. (emaxhealth.com)
- Hospitals in the most-specialized group performed emergency angioplasty on more than 88.5 percent of the heart attack patients. (emaxhealth.com)
- Those in the least-specialized group provided emergency angioplasty to less than 34 percent of their heart attack emergency patients. (emaxhealth.com)
- Most people can go home the same day or the next day, but if you've had an emergency angioplasty it's likely you'll need to stay in hospital for longer. (bhf.org.uk)
- Angioplasty requires an access vessel, typically the femoral or radial artery or femoral vein , to permit access to the vascular system for the wires and catheters used. (wikipedia.org)
- If no access vessel of sufficient size and quality is available, angioplasty is contraindicated. (wikipedia.org)
- An angioplasty is done to reopen a partially blocked blood vessel so that blood can flow through it again at a normal rate. (encyclopedia.com)
- Angioplasties were originally performed by dilating the blood vessel with the introduction of larger and larger stiff catheters through the narrowed space. (encyclopedia.com)
- Although many angioplasties are performed by puncturing the vessel through the skin, others are done by surgically exposing the site of entry. (encyclopedia.com)
- In 1964 Charles T. Dotter and Melvin Judkins of the University of Oregon (Eugene) combined these advances to successfully perform transluminal (along the "lumen," or cavity, of a blood vessel) angioplasty (blood vessel repair). (encyclopedia.com)
- Angioplasty , therapeutic opening of a blocked blood vessel . (britannica.com)
- How well angioplasty works depends on the size of the blood vessel, the length of blood vessel affected, and whether the blood vessel is completely blocked. (webmd.com)
- During angioplasty, a thin tube with a balloon on the end is threaded through a blood vessel to the narrowed or blocked coronary artery. (bidmc.org)
- The variable distention angioplasty balloon assembly, for insertion into a blood vessel, comprises an inner elongated, inflatable balloon having a distal portion, a proximal portion and an intermediate portion therebetween and defining therein a first chamber. (google.es)
- In order to perform the angioplasty, the surgeon first inserts a catheter through a blood vessel in the wrist or the groin, carefully advancing it until it reaches the narrowed area, says WebMD. (reference.com)
- To determine whether balloon angioplasty can provoke arterial vasoconstriction independent of platelet aggregation and neurogenic input, we studied the spontaneous vasomotor effects of balloon dilatation in isolated, perfused whole-vessel segments of rabbit aorta and pig carotid artery. (ahajournals.org)
- The proximal or distal half of the aortas were dilated with either a "large" (5 mm, 31-51% stretch beyond relaxed diameter) or a "small" (4 mm, 5-16% stretch) balloon angioplasty catheter with the other half of the vessel serving as the control. (ahajournals.org)
- The spontaneous vasomotor effects of balloon angioplasty were examined with long-axis, high-frequency ultrasonic imaging combined with computerized edge detection image processing to measure changes in segmental internal vessel diameters. (ahajournals.org)
- Angioplasty repairs the damage through a tube pushed through a blood vessel. (pressherald.com)
- An angioplasty device is disclosed for treatment of, or for compression and/or removal of an obstruction from, a vessel or vessel-like structure in medical, non-medical and industrial applications. (freepatentsonline.com)
- A method for treatment of, or for removal or compression of an obstruction in, a vessel or vessel-like structure is disclosed that utilizes an angioplasty device of the instant invention. (freepatentsonline.com)
- A method employing an angioplasty device of the instant invention is also disclosed for preventing particles from escaping from a point of manipulation of a vessel or vessel-like structure. (freepatentsonline.com)
- In some cases, blockages are cleared by inflating a balloon-like device inside the vessel (angioplasty) and inserting a stent to keep the vessel open. (bio-medicine.org)
- Angioplasty is the mechanical widening of a narrowed or totally obstructed blood vessel . (wikidoc.org)
- The term angioplasty is a portmanteau of the words "angio" (from the Latin/ Greek word meaning "vessel") and "plasticos" (Greek: fit for moulding). (wikidoc.org)
- Many medical centers, in fact, restrict the use of angioplasty to patients who cannot be treated with thrombolytic therapy. (encyclopedia.com)
- It's among a dozen medical centers participating in an NIH-funded study of computer-based consent forms that give patients individualized risk profiles before angioplasty. (go.com)
- The study included 1,059 people who had major heart attacks and were given clot-dissolving treatment at Canadian medical centers not equipped for angioplasty. (bio-medicine.org)
- The other half were transferred to centers where angioplasty could be done within six hours. (bio-medicine.org)
- However, less than 5% of the people who have angioplasty have a heart attack during it. (howstuffworks.com)
- Others have argued that combining angioplasty and clot-dissolving drugs -- both of which are effective therapies -- should produce even better results. (latimes.com)
- In contrast, angioplasty presents fewer risks while it saves the arms, legs, and kidneys affected by the impaired circulation. (encyclopedia.com)
- Information about the indications, benefits and risks of coronary angioplasty is accumulating rapidly in addition to publications about refinements of the technique itself. (springer.com)
- As an invasive surgery, angioplasty does come with its fair share of risks, however. (mercola.com)
- Along with saving yourself from the potentially life-threatening risks noted above, avoiding angioplasty will save you a hefty chunk of change. (mercola.com)
- What are the risks of angioplasty? (howstuffworks.com)
- If the angioplasty catheter is inserted into the femoral artery in the groin, the individual is instructed to lie flat and keep the affected leg straight for at least six hours. (faqs.org)
- Angioplasty is performed through a small incision in the femoral artery. (wisegeek.com)
- There are no evaluations for Angioplasty of femoral artery. (patientslikeme.com)
- 2. The angioplasty system of claim 1 wherein each of said fiber-optic waveguides has a diameter no greater than about 200 microns. (google.com)
- 3. The angioplasty system of claim 1 wherein the energy-conducting core of each waveguide is surrounded by cladding that is made of glass material. (google.com)
- 4. The angioplasty system of claim 1 wherein the core of each of said waveguides is doped with fluorine. (google.com)
- 5. The angioplasty system of claim 1 wherein each pulse of said laser energy comprises a sequence of time shifted subpulses. (google.com)
- 6. The angioplasty system of claim 1 wherein the core of each of said waveguides is doped with an OH - radical. (google.com)
- 2 . The angioplasty pressure transducer according to claim 1 , wherein the cylindrical member further includes a removable stopper at the second end thereof. (google.es)
- 3 . The angioplasty pressure transducer according to claim 1 , wherein the cylindrical member is composed of a substantially rigid plastic. (google.es)
- 4 . The angioplasty pressure transducer according to claim 1 , wherein the fluid port includes a central passageway for permitting fluid communication between the inner cavity of the cylindrical member and the external environment. (google.es)
- 5 . The angioplasty pressure transducer according to claim 1 , wherein the fluid port includes a coupling mechanism for selective and secure attachment to a catheter, or other cannula. (google.es)
- 6 . The angioplasty pressure transducer according to claim 1 , wherein the stopper is shaped and dimensioned for frictionally mounting within an opening at the second end of cylindrical member. (google.es)
- 2. The angioplasty device of claim 1 wherein said operative member is a balloon. (freepatentsonline.com)
- Combining OCT with a balloon deployment system provides an improved platform for angioplasty balloon development and can also be used in the development of next-generation minimally invasive devices for percutaneous through the skin coronary interventions," says Lamouche. (medindia.net)
- Minimally invasive, endovascular procedures such as angioplasty can reduce risk and offer shorter recovery times, compared to open surgery . (hopkinsmedicine.org)
- Angioplasty has come to include all manner of vascular interventions typically performed in a minimally invasive or percutaneous method. (wikidoc.org)
- For some patients, thrombolytic therapy (treatment with drugs that dissolve blood clots) is an alternative to angioplasty. (encyclopedia.com)
- An international, first-of-its-kind cardiology trial used personalized genetic testing to reduce by 34 per cent the number of serious adverse events following balloon angioplasty, a treatment for the most common form of heart disease. (news-medical.net)
- This invention relates to angioplasty and, more particularly, a method and apparatus for preventing abrupt reclosure and restenosis after treatment. (google.com)
- Renal angioplasty has notable physiologic, psychological, and economic advantages over other treatment modalities, and it should now be considered the therapy of choice for renovascular HTN. (medscape.com)
- He noted that few doctors used clot dissolvers in combination with angioplasty any more, but that many still used abciximab as a holding treatment when angioplasty was delayed. (latimes.com)
- According to the Society for Cardiovascular Angiography and Interventions , angioplasty for heart attack treatment saves lives. (healthline.com)
- A dual antiplatelet therapy with aspirin and an ADP receptor inhibitor such as clopidogrel is the standard antiplatelet treatment in patients undergoing angioplasty. (medindia.net)
- The alternative treatment to angioplasty noted in the study was a combination of lifestyle changes and drugs. (mercola.com)
- On the whole, they were significantly more likely to die before leaving the hospital, and waited an average of 20 minutes longer for treatment, than those treated at hospitals where most heart attack patients received angioplasty. (emaxhealth.com)
- Angioplasty looked like a better treatment for high risk patients even when they had to be transferred to get it (mortality 24.6% v 36.8%, P = 0.02, number needed to treat 8). (bmj.com)
- The device incorporates a trap/barrier for trapping and removing particles that break away from the treatment site with traditional angioplasty devices including but not limited to balloons, cutting rotors, fiber meshes, lasers and the like. (freepatentsonline.com)
- In contrast with endovascular treatment [angioplasty], surgical patients had about half the rate of strokes in long-term follow-up," said Dr. Martin M. Brown, a professor of stroke medicine at University College London Institute of Neurology, and a senior author of two reports in the October issue of the Lancet Neurology . (drugs.com)
- One of the reports said there were more minor strokes in the 30 days after treatment in the angioplasty group than in the surgery group. (drugs.com)
- There is still a place for angioplasty in the treatment of carotid stenosis, Rothwell said. (drugs.com)
- Coronary angioplasty is a treatment that helps improve the blood supply to your heart where a special kind of balloon is gently inflated inside the coronary artery. (bhf.org.uk)
- WEDNESDAY, June 24 (HealthDay News) -- A new Canadian study adds compelling support for current recommendations that people who first get clot-dissolving treatment for heart attacks should have artery-opening angioplasty as soon as possible afterward. (bio-medicine.org)
- Half were assigned to standard treatment, clot-preventing drugs with aspirin and the blood thinner heparin, with angioplasty done when possible. (bio-medicine.org)
- Nearly 90 percent of those getting standard treatment did have angioplasty, done after an average wait of more than 32 hours. (bio-medicine.org)
- While statistics are vague, probably only half the people who suffer heart attacks in the United States get angioplasty as the first treatment, he said. (bio-medicine.org)
- One drawback is that laser angioplasty carries a significant risk of perforating (puncturing) the blood vessels being treated. (encyclopedia.com)
- Once completed, the angioplasty will result in a return of adequate blood supply to the region that was previously deprived of blood and oxygen. (faqs.org)
- Pairing a blood-thinning drug with aspirin daily for patients who have an angioplasty with a stent can contribute to better health outcomes, including lower risk of death, than aspirin alone, according to a recent study by cardiologists at the University of Alberta and Mazankowski Alberta Heart Institute. (news-medical.net)
- Coronary angioplasty is used to restore blood flow through a narrowed or blocked artery in the heart. (daviddarling.info)
- NEW YORK (Reuters Health) - People who quit smoking after a balloon angioplasty to improve blood flow to the heart live an average of two years longer than those who keep smoking, a new study suggests. (reuters.com)
- An angioplasty is done to open an artery blocked by plaque and restore blood flow to the heart. (healthday.com)
- To minimize formation of new clots during and after angioplasty, surgeons typically use a combination of blood-thinning drugs and clot-preventing agents. (latimes.com)
- Numerous studies have shown that angioplasty is the gold standard for such patients, and physicians urge that it be implemented as soon as possible to restore blood flow to the heart. (latimes.com)
- Angioplasty is a surgery commonly performed to treat patients with a partially or completely blocked coronary artery that restricts blood flow to the heart. (medindia.net)
- Patients who undergo angioplasty after a heart attack typically have permanent tissue damage and scarring in the heart, up to half of which can be attributed to the injury that occurs as a result of restoring blood flow in heart tissue that has been deprived of oxygen, a process called reperfusion injury. (eurekalert.org)
- Angioplasty uses an inflatable balloon to improve blood flow. (drugs.com)
- The combination of hemodynamic and biochemical parameters with morphological information from the coronary angiogram can be utilized for the quantification of myocardial involvement and the success of coronary dilatation with angioplasty. (springer.com)
- You will also have an imaging test called a Coronary Angiogram to see if your blockages can be treated with angioplasty. (apollohospitals.com)