Angioplasty balloon laser assisted. Medical search

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.

Dilation of an occluded coronary artery (or arteries) by means of a balloon catheter to restore myocardial blood supply.

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.

An optical source that emits photons in a coherent beam. Light Amplification by Stimulated Emission of Radiation (LASER) is brought about using devices that transform light of varying frequencies into a single intense, nearly nondivergent beam of monochromatic radiation. Lasers operate in the infrared, visible, ultraviolet, or X-ray regions of the spectrum.

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.

The veins and arteries of the HEART.

Methods of creating machines and devices.

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).

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).

Devices that provide support for tubular structures that are being anastomosed or for body cavities during skin grafting.

Use of a balloon CATHETER to block the flow of blood through an artery or vein.

The return of a sign, symptom, or disease after a remission.

The condition of an anatomical structure's being constricted beyond normal dimensions.

Counterpulsation in which a pumping unit synchronized with the patient's electrocardiogram rapidly fills a balloon in the aorta with helium or carbon dioxide in early diastole and evacuates the balloon at the onset of systole. As the balloon inflates, it raises aortic diastolic pressure, and as it deflates, it lowers aortic systolic pressure. The result is a decrease in left ventricular work and increased myocardial and peripheral perfusion.

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.

Radiography of the vascular system of the heart muscle after injection of a contrast medium.

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.

An inflatable device implanted in the stomach as an adjunct to therapy of morbid obesity. Specific types include the silicone Garren-Edwards Gastric Bubble (GEGB), approved by the FDA in 1985, and the Ballobes Balloon.

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.

Lasers which use a solid, as opposed to a liquid or gas, as the lasing medium. Common materials used are crystals, such as YAG (YTTRIUM aluminum garnet); alexandrite; and CORUNDUM, doped with a rare earth element such as a NEODYMIUM; ERBIUM; or HOLMIUM. The output is sometimes additionally modified by addition of non-linear optical materials such as potassium titanyl phosphate crystal, which for example is used with neodymium YAG lasers to convert the output light to the visible range.

Either of two large arteries originating from the abdominal aorta; they supply blood to the pelvis, abdominal wall and legs.

The use of green light-producing LASERS to stop bleeding. The green light is selectively absorbed by HEMOGLOBIN, thus triggering BLOOD COAGULATION.

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.

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.

NECROSIS of the MYOCARDIUM caused by an obstruction of the blood supply to the heart (CORONARY CIRCULATION).

The main artery of the thigh, a continuation of the external iliac artery.

Elements of limited time intervals, contributing to particular results or situations.

The degree to which BLOOD VESSELS are not blocked or obstructed.

Treatment using irradiation with LASER light of low power intensity so that the effects are not due to heat, as they are in LASER THERAPY.

The innermost layer of an artery or vein, made up of one layer of endothelial cells and supported by an internal elastic lamina.

Obstruction of flow in biological or prosthetic vascular grafts.

Radiography of blood vessels after injection of a contrast medium.

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.

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)

The continuation of the femoral artery coursing through the popliteal fossa; it divides into the anterior and posterior tibial arteries.

Widening of a stenosed HEART VALVE by the insertion of a balloon CATHETER into the valve and inflation of the balloon.

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.

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.

Techniques using laser energy in combination with a balloon catheter to perform angioplasty. These procedures can take several forms including: 1, laser fiber delivering the energy while the inflated balloon centers the fiber and occludes the blood flow; 2, balloon angioplasty immediately following laser angioplasty; or 3, laser energy transmitted through angioplasty balloons that contain an internal fiber.

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.

Gas lasers with excited dimers (i.e., excimers) as the active medium. The most commonly used are rare gas monohalides (e.g., argon fluoride, xenon chloride). Their principal emission wavelengths are in the ultraviolet range and depend on the monohalide used (e.g., 193 nm for ArF, 308 nm for Xe Cl). These lasers are operated in pulsed and Q-switched modes and used in photoablative decomposition involving actual removal of tissue. (UMDNS, 2005)

Recurrent narrowing or constriction of a coronary artery following surgical procedures performed to alleviate a prior obstruction.

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.

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.

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.

Use of infusions of FIBRINOLYTIC AGENTS to destroy or dissolve thrombi in blood vessels or bypass grafts.

High energy POSITRONS or ELECTRONS ejected from a disintegrating atomic nucleus.

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.

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.

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.

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.

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).

Procedures in which placement of CARDIAC CATHETERS is performed for therapeutic or diagnostic procedures.

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)

Either of the two principal arteries on both sides of the neck that supply blood to the head and neck; each divides into two branches, the internal carotid artery and the external carotid artery.

The circulation of blood through the CORONARY VESSELS of the HEART.

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.

Tunable liquid lasers with organic compounds (i.e., dye) which have a strong absorption band, used as the active medium. During emission, the dye has to be optically excited by another light source (e.g., another laser or flash lamp). The range of the emission wavelength may be anywhere from the ultraviolet to the near infrared (i.e., from 180 to 1100nm). These lasers are operated in continuous wave and pulsed modes. (UMDNS, 2005)

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.

The nonstriated involuntary muscle tissue of blood vessels.

A scanning microscope-based, cytofluorimetry technique for making fluorescence measurements and topographic analysis on individual cells. Lasers are used to excite fluorochromes in labeled cellular specimens. Fluorescence is detected in multiple discrete wavelengths and the locational data is processed to quantitatively assess APOPTOSIS; PLOIDIES; cell proliferation; GENE EXPRESSION; PROTEIN TRANSPORT; and other cellular processes.

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.

The inferior part of the lower extremity between the KNEE and the ANKLE.

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.

The act of dilating.

A repeat operation for the same condition in the same patient due to disease progression or recurrence, or as followup to failed previous surgery.

Studies to determine the advantages or disadvantages, practicability, or capability of accomplishing a projected plan, study, or project.

Coagulation of blood in any of the CORONARY VESSELS. The presence of a blood clot (THROMBUS) often leads to MYOCARDIAL INFARCTION.

Narrowing of the passage through the MITRAL VALVE due to FIBROSIS, and CALCINOSIS in the leaflets and chordal areas. This elevates the left atrial pressure which, in turn, raises pulmonary venous and capillary pressure leading to bouts of DYSPNEA and TACHYCARDIA during physical exertion. RHEUMATIC FEVER is its primary cause.

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.

The restoration of blood supply to the myocardium. (From Dorland, 28th ed)

A mixture of metallic elements or compounds with other metallic or metalloid elements in varying proportions.

Pathological processes of CORONARY ARTERIES that may derive from a congenital abnormality, atherosclerotic, or non-atherosclerotic cause.

Narrowing or constriction of a coronary artery.

The vein which drains the foot and leg.

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.

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.

A surgical procedure to correct MYOPIA by CORNEAL STROMA subtraction. It involves the use of a microkeratome to make a lamellar dissection of the CORNEA creating a flap with intact CORNEAL EPITHELIUM. After the flap is lifted, the underlying midstroma is reshaped with an EXCIMER LASER and the flap is returned to its original position.

Precordial pain at rest, which may precede a MYOCARDIAL INFARCTION.

Pathological processes involving any one of the BLOOD VESSELS in the vasculature outside the HEART.

The excision of the thickened, atheromatous tunica intima of a carotid artery.

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.

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.

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.

Formation and development of a thrombus or blood clot in the blood vessel.

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.

Surgical insertion of BLOOD VESSEL PROSTHESES to repair injured or diseased blood vessels.

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.

Endoscopic examination, therapy or surgery performed on the interior of blood vessels.

Surgical shunt allowing direct passage of blood from an artery to a vein. (From Dorland, 28th ed)

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.

Maintenance of blood flow to an organ despite obstruction of a principal vessel. Blood flow is maintained through small vessels.

Hypertension due to RENAL ARTERY OBSTRUCTION or compression.

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.

Use of HIRUDINS as an anticoagulant in the treatment of cardiological and hematological disorders.

Fibrinolysin or agents that convert plasminogen to FIBRINOLYSIN.

The removal of a limb or other appendage or outgrowth of the body. (Dorland, 28th ed)

A value equal to the total volume flow divided by the cross-sectional area of the vascular bed.

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.

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.

Branch of the common carotid artery which supplies the anterior part of the brain, the eye and its appendages, the forehead and nose.

The region of the lower limb in animals, extending from the gluteal region to the FOOT, and including the BUTTOCKS; HIP; and LEG.

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.

Blocking of a blood vessel by an embolus which can be a blood clot or other undissolved material in the blood stream.

A flexible, tubular device that is used to carry fluids into or from a blood vessel, hollow organ, or body cavity.

Device constructed of either synthetic or biological material that is used for the repair of injured or diseased blood vessels.

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.

The use of balloon CATHETERS to remove emboli by retraction of the balloon that is inflated behind the EMBOLUS.

Motion picture study of successive images appearing on a fluoroscopic screen.

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.

Operative procedures for the treatment of vascular disorders.

Motion pictures of the passage of contrast medium through blood vessels.

Shock resulting from diminution of cardiac output in heart disease.

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.

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).

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.

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.

A branch of the abdominal aorta which supplies the kidneys, adrenal glands and ureters.

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.

Levels within a diagnostic group which are established by various measurement criteria applied to the seriousness of a patient's disorder.

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.

Radiography of the vascular system of the brain after injection of a contrast medium.

A vital statistic measuring or recording the rate of death from any cause in hospitalized populations.

Agents that affect the rate or intensity of cardiac contraction, blood vessel diameter, or blood volume.

The qualitative or quantitative estimation of the likelihood of adverse effects that may result from exposure to specified health hazards or from the absence of beneficial influences. (Last, Dictionary of Epidemiology, 1988)

The movement and the forces involved in the movement of the blood through the CARDIOVASCULAR SYSTEM.

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.

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)

The plan and delineation of prostheses in general or a specific prosthesis.

Agents that prevent clotting.

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.

A type of stress exerted uniformly in all directions. Its measure is the force exerted per unit area. (McGraw-Hill Dictionary of Scientific and Technical Terms, 6th ed)

Catheters inserted into various locations within the heart for diagnostic or therapeutic purposes.

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.

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.

Stents that are covered with materials that are embedded with chemicals that are gradually released into the surrounding milieu.

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.

Genetically developed small pigs for use in biomedical research. There are several strains - Yucatan miniature, Sinclair miniature, and Minnesota miniature.

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.

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.

Situations or conditions requiring immediate intervention to avoid serious adverse results.

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.

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.

Techniques using a laser to cut away and harvest a specific cell or cluster of cells from a tissue section while viewing it under the microscope.

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.

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.

Naturally occurring or experimentally induced animal diseases with pathological processes sufficiently similar to those of human diseases. They are used as study models for human diseases.

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.

Failure of equipment to perform to standard. The failure may be due to defects or improper use.

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)

A pathological constriction that can occur above (supravalvular stenosis), below (subvalvular stenosis), or at the AORTIC VALVE. It is characterized by restricted outflow from the LEFT VENTRICLE into the AORTA.

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.

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.

Treatment of in-stent restenosis with excimer laser coronary angioplasty versus rotational atherectomy: comparative mechanisms and results. (1/46)

BACKGROUND: Atheroablation yields improved clinical results for balloon angioplasty (percutaneous transluminal coronary angioplasty, PTCA) in the treatment of diffuse in-stent restenosis (ISR). METHODS AND RESULTS: We compared the mechanisms and clinical results of excimer laser coronary angioplasty (ELCA) versus rotational atherectomy (RA), both followed by adjunct PTCA; 119 patients (158 ISR lesions) were treated with ELCA+PTCA and 130 patients (161 ISR lesions) were treated with RA+PTCA. Quantitative coronary angiographic and planar intravascular ultrasound (IVUS) measurements were performed routinely. In addition, volumetric IVUS analysis to compare the mechanisms of lumen enlargement was performed in 28 patients with 30 lesions (16 ELCA+PTCA, 14 RA+PTCA). There were no significant between-group differences in preintervention or final postintervention quantitative coronary angiographic or planar IVUS measurements of luminal dimensions. Angiographic success and major in-hospital complications with the 2 techniques were also similar. Volumetric IVUS analysis showed significantly greater reduction in intimal hyperplasia volume after RA than after ELCA (43+/-14 versus 19+/-10 mm(3), P<0.001) because of a significantly higher ablation efficiency (90+/-10% versus 76+/-12%, P = 0.004). However, both interventional strategies had similar long-term clinical outcome; 1-year target lesion revascularization rate was 26% with ELCA+PTCA versus 28% with RA+PTCA (P = NS). CONCLUSIONS: Despite certain differences in the mechanisms of lumen enlargement, both ELCA+PTCA and RA+PTCA can be used to treat diffuse ISR with similar clinical results. (+info)

Six-month clinical and angiographic outcome after successful excimer laser angioplasty for in-stent restenosis. (2/46)

OBJECTIVES: This study evaluated the clinical and angiographic six-month follow-up after excimer laser coronary angioplasty (ELCA) for restenosed coronary stents. BACKGROUND: Excimer laser coronary angioplasty has recently been shown to be safe and efficient for the treatment of in-stent restenosis. METHODS: Ninety-six consecutive patients successfully treated with ELCA within 141 stents were included in a six-month clinical and angiographic follow-up. RESULTS: During follow-up there was one sudden death and one patient with documented myocardial infarction. Angina pectoris classified as > or = Canadian Cardiovascular Society II reoccurred in 49 patients. Follow-up angiography was obtained in 89 patients (93%) with 133 stents. Quantitative coronary angiography revealed a mean diameter stenosis of 77 +/- 10% before intervention, 41 +/- 12% after laser treatment and 11% +/- 12% after adjunctive percutaneous transluminal coronary angioplasty (p < 0.001). Six months after ELCA the mean diameter stenosis had increased to 60 +/- 26% (p < 0.001). A > or =50% diameter stenosis was present in 48 patients (54%); in 24 of these patients diameter stenosis was > or =70%. Total occlusions occurred in an additional 10 patients (11%). There was a trend toward an increased recurrent restenosis rate in patients with diabetes mellitus and long lesions or total occlusions (p = 0.059). Forty-eight patients (50%) received medical treatment after six months. Reinterventions were necessary in 30 patients (31%), and coronary artery bypass surgery was performed in 17 patients (18%). Event-free survival was 50%. CONCLUSIONS: Excimer laser angioplasty for in-stent restenosis was associated with a high incidence of recurrent restenosis in this group of patients, suggesting that this technique is unlikely to reduce recurrent in-stent restenosis and that other approaches are necessary. (+info)

Clinical and angiographic outcome in patients with in-stent restenosis and repeat target lesion revascularisation in small coronary arteries. (3/46)

OBJECTIVE: To evaluate the clinical and angiographic outcome in patients with in-stent restenosis in small coronary arteries and repeat target lesion revascularisation. DESIGN: Patients with in-stent restenosis in coronary arteries < or = 2.85 mm were eligible for the study and underwent target lesion revascularisation. Clinical and angiographic variables were assessed during a six month follow up period. RESULTS: 73 patients with 79 lesions were treated by percutaneous transluminal coronary angioplasty (47%), excimer laser angioplasty (25%), or restenting (28%). The mean (SD) reference diameter before target lesion revascularisation was 2.12 (0.5) mm. Procedural success was achieved in all cases, but 57% of the patients had restenosis after six months. The rate of further restenosis was higher with laser angioplasty (78%) than with restenting (47%) or balloon angioplasty alone (49%, p < 0.05). CONCLUSIONS: Treatment for in-stent restenosis in small coronary arteries is feasible and safe, with a second restenosis rate comparable to large coronary artery series. The strategy of target lesion revascularisation influences further in-stent restenosis, with an increased rate with laser angioplasty compared with restenting and repeat dilatation alone. (+info)

Treatment of in-stent coronary restenosis with excimer laser angioplasty. (4/46)

OBJECTIVE: To evaluate the efficacy and safety of excimer laser coronary angioplasty (ELCA) with adjunctive balloon angioplasty in patient with in-stent restenosis. METHODS: ELCA was performed in 20 patients of instent restenosis. All patients were symptomatic and had class III-IV angina. ELCA was performed with the Spectranetics CVX-300 System. The laser catheter of Vittesse C (concentric) and E (eccentric) with diameter of 1.4-2.0 mm was used. RESULTS: Laser catheter crossed all stenotic stents without difficulty. The lesion length was 4.6-51.2 mm, mean 20.7 +/- 13.7 mm, including 14 lesions > 10 mm. Laser treatment alone increased minimal lumen diameter (MLD) from 0.3 +/- 0.3 mm to 1.4 +/- 0.3 mm (P < 0.0001) and improved the diameter stenosis from 88.8% +/- 10.0% to 46.0% +/- 8.0% (P < 0.0001). Adjunctive balloon angioplasty further increased minimal lumen diameter to 2.3 +/- 0.7 mm and reduced diameter stenosis to 14.2% +/- 8.2% (P < 0.0001). At follow-up (1-17 months, mean 8.9 +/- 5.7 months), 17 (85%) patients had remained asymptomatic, 3 (15%) patients had mild to moderate exertional angina, 1 (5%) patient received CABG. CONCLUSION: ELCA with adjunctive percutaneous transluminal coronary angioplasty (PTCA) is an efficient and safe technique to debulk tissue in the patient with in-stent restenosis. The incidence of procedural related complication was low and ELCA may be used as a good method for in-stent restenosis treatment. (+info)

Coronary flow velocity and disturbed flow predict adverse clinical outcome after coronary angioplasty. (5/46)

OBJECTIVE: Laminar flow becomes disturbed at high velocities, reducing shear stress and augmenting vascular inflammation and proliferation, processes that are pivotal in restenosis and atherogenesis. We hypothesized that disturbed blood flow after coronary angioplasty is associated with adverse long-term clinical outcome. METHODS AND RESULTS: The cineangiograms from 97 patients undergoing laser-assisted coronary angioplasty were analyzed. Coronary blood flow velocity, the residual lesion dimensions, and the Reynolds number (an index of disturbed flow) were measured by using a frame-counting technique and quantitative coronary angiography. Cox proportional hazards were used to assess the relative risk of adverse events (target-vessel revascularization, myocardial infarction, or death) over a mean 2.5 years after the index procedure. There were 41 adverse events during 245 patient years of follow-up (17% per year of follow-up). The risk of an adverse event was increased for patients with a high flow velocity (>250 mm/s; relative risk 2.5, 95% CI 1.3 to 4.7) or a high Reynolds number (>200) at the stenosis inlet (relative risk 2.1, 95% CI 1.1 to 4.1) at the end of the procedure. Adjustment for other factors did not alter these results. CONCLUSIONS: High Reynolds numbers, indicating disturbed blood flow after coronary angioplasty, increase the risk of adverse clinical events, potentially through shear-stress-related molecular mechanisms that promote restenosis and atherogenesis. (+info)

Excimer laser-assisted high-flow extracranial/intracranial bypass in patients with symptomatic carotid artery occlusion at high risk of recurrent cerebral ischemia: safety and long-term outcome. (6/46)

BACKGROUND AND PURPOSE: The goal of this study was to determine safety and long-term outcome of the excimer laser-assisted high-flow extracranial/intracranial (EC/IC) bypass in patients with symptomatic carotid artery occlusion (CAO) at high risk of recurrent stroke. METHODS: In a prospectively collected cohort of 103 patients with symptomatic CAO, 15 patients were selected for excimer laser-assisted EC/IC bypass surgery on the basis of predefined selection criteria: (1) transient or moderately disabling symptoms of focal cerebral ischemia, not symptoms of the retina only; (2) continuing symptoms after documentation of the CAO; (3) evidence of a possible hemodynamic origin of symptoms; and (4) informed consent of the patient. RESULTS: Eleven patients underwent the operation without complications One patient had a severely disabling stroke (Rankin grade 4) 11 days after the operation; the bypass was found occluded on reoperation. Two other patients had a moderately disabling stroke (Rankin grade 3) immediately after the operation. One patient died of myocardial infarction 1 day after surgery. Median follow-up time was 27 months. Of the 11 patients who underwent the operation without complications, 1 died 17 months after the operation of a brainstem stroke, and another patient had a new stroke ipsilateral to his CAO 10 months after the operation but without a change in Rankin grade. CONCLUSIONS: The excimer laser-assisted high-flow EC/IC bypass operation is a potentially promising procedure in patients with symptomatic CAO and a presumably high risk of recurrent stroke, but the procedure carries a definite risk. This risk is probably related not only to the procedure itself but also to the selection of patients. (+info)

Treatment of in-stent restenosis with excimer laser coronary angioplasty. (7/46)

Diffuse in-stent restenosis remains an important problem in percutaneous transluminal coronary angioplasty (PTCA). In this trial, we studied the early and mid-term outcomes of excimer laser coronary angioplasty (ELCA) on diffuse in-stent restenosis. ELCA was performed in 23 patients (19 males). The mean length of the lesions was 14.3 +/- 3 mm and the mean age was 58 +/- 7 years. The minimal lumen diameter (MLD) was measured by on-line quantitative coronary angiography. Before the procedure, MLD was 0.9 +/- 0.4. The Q/non-Q-wave myocardial infarction (MI), coronary artery bypass graft (CABG), PTCA, and mortality were recorded during the procedure and at 6 months follow up. The fluence of laser emission was 45 mj/m2 and the repetition rate was 25 pulses per second. Adjunctive balloon angioplasty was performed in all of the cases at a mean 7 +/- 2 atm pressure. The procedure was successfully performed in all of the cases. Type-B dissection developed, after ELCA in 1 patient (4%). Perforation, death, cerebrovascular accidents, emergency CABG, PTCA or Q/non-Q wave myocardial infarction were not observed. MLD was 0.9 +/- 0.4 mm before ELCA, 1.8 +/- 0.9 mm (P<0.05) after ELCA, and 3.1 +/- 0.7 mm after PTCA. At 6 months follow up, there were 2 (8.7%) Q-wave myocardial infarctions and 2 (8.7%) recurrent anginal pain cases. Control angiography was obtained in 20 cases (87%). Control angiography was not accepted by 3 patients. Their maximal exercise test was negative. Angiographic restenosis was observed in 6 cases (30%). The rate of target lesion revascularization (TLR) was 5 of 23 (22%) in the patients treated with ELCA. It is concluded, ELCA is a safe and efficient debulking technology for treating diffuse in-stent restenosis. (+info)

Intracoronary ultrasound predictors of adverse outcomes after coronary artery interventions. (8/46)

OBJECTIVES: The purpose of this study was to determine the association between qualitative and quantitative lesion characteristics as assessed by intracoronary ultrasound imaging and adverse outcomes after coronary artery interventions. BACKGROUND: Restenosis and other adverse outcomes after coronary artery interventions may be difficult to predict from clinical or angiographic data. Intracoronary ultrasound imaging provides additional data that could prove useful. METHODS: Immediately after successful coronary artery interventions (angiographic residual stenosis < or = 50%), 69 patients underwent intracoronary ultrasound imaging. Images were assessed qualitatively for plaque composition and topography and for dissection. Quantitative data included measurement of minimal lumen diameter, lumen area, plaque area and percent area stenosis at the treatment and adjacent reference sites. Adverse outcome was defined as death, coronary bypass surgery, myocardial infarction or angiographic restenosis. RESULTS: Of the 69 patients, 1 died, 3 had bypass surgery and 1 had a myocardial infarction before planned 6-month repeat catheterization. Two patients were lost to follow-up study. Of the remaining 62 patients, 56 (90%) agreed to follow-up catheterization and 25 (45%) of the 56 had restenosis. Thus, 30 patients had an adverse outcome and 37 had no adverse event. The incidence of dissection detected by ultrasound imaging after an intervention was significantly greater in patients with than in those without a subsequent adverse event (63% vs. 35%, p < 0.05). The severity of dissection also appeared to be related to outcome (p < 0.05). Other qualitative and quantitative variables were not significantly different between the two patient groups. CONCLUSIONS: Dissection, as assessed by intracoronary ultrasound imaging after a coronary artery intervention, can identify patients at increased risk of subsequent adverse events. Additional studies are warranted to explore whether such imaging may allow modification of interventional procedures to improve outcome. (+info)

... angioplasty, balloon MeSH E02.148.050.060.080 - angioplasty, balloon, laser-assisted MeSH E02.148.050.060.100 - angioplasty, ... angioplasty, balloon MeSH E02.148.102.060.080 - angioplasty, balloon, laser-assisted MeSH E02.148.102.060.100 - angioplasty, ... laser MeSH E02.148.050.075.080 - angioplasty, balloon, laser-assisted MeSH E02.148.050.120 - atherectomy MeSH E02.148.050.120. ... assisted MeSH E02.760.952.500 - euthanasia, passive MeSH E02.774.722.435 - hematoporphyrin photoradiation MeSH E02.774.945.500 ...

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... angioplasty, laser MeSH E04.416.075.080 - angioplasty, balloon, laser-assisted MeSH E04.416.237 - keratectomy, laser MeSH ... angioplasty MeSH E04.100.814.050.060 - angioplasty, balloon MeSH E04.100.814.050.060.080 - angioplasty, balloon, laser-assisted ... angioplasty, laser MeSH E04.100.814.050.075.080 - angioplasty, balloon, laser-assisted MeSH E04.100.814.050.120 - atherectomy ... laser in situ MeSH E04.416.237.875 - keratectomy, subepithelial, laser-assisted MeSH E04.416.410 - laser coagulation MeSH ...

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500,000 balloon angioplasty/stent/coronary procedures; 1M coronary catheterizations Recent successes in acute stroke care are ... Laser sources are coupled into the single scanning fiber and they use red, green, and blue lasers to create color images. To ... and the SFE to assist in wiring the vessel, see the proximal surface of totally occluded vessels and other unique vascular ... Lasers in Surgery and Medicine. 2002;30(3):177-183. [PubMed] [17] Seibel EJ, Smithwick QYJ, Brown CM, Reinhall PG. Single-fiber ...

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Charles Dotter, who invented angioplasty. Of note, Dr. Thomas Fogarty invented the balloon catheter which enabled angioplasty. ... Vascular surgeons often assist other physicians to address traumatic vascular injury, hemorrhage control, and safe exposure of ... endovenous laser treatment are rapidly replacing major surgery in many first world countries. These newer procedures provide ... American interventional radiologist Charles Theodore Dotter who is credited with inventing minimally invasive angioplasty (1964 ...

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"Philip K. Katz". Biographies Pioneers of computing A-J. "US Patent 5053090 - Selective laser sintering with assisted powder ... A common use includes angioplasty. In 1963, Dr. Thomas Fogarty invented and patented the balloon catheter. 1963 Geosynchronous ... 1964 Argon laser The argon laser is one of a family of ion lasers that use a noble gas as the active medium. The argon laser ... 1965 Chemical laser A chemical laser is a laser that obtains its energy from a chemical reaction. Chemical lasers can achieve ...

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Angioplasty, Balloon, Laser-Assisted E4.416.75.80 E2.594.60.80. E4.416.60.80. Angioplasty, Laser E4.416.75 E2.594.60. E4.416.60 ... Laser-Assisted. E4.416.237.875 E2.594.480.500. E4.416.480.500. E4.540.825.437.249. Keratomileusis, Laser In Situ E4.416.237.750 ... Keratectomy, Laser E4.416.237 E2.594.480. E4.416.480. E4.540.825.437. (Replaced for 2008 by Corneal Surgery, Laser). ... Laser Coagulation E4.416.410 E2.594.530. E4.416.530. Laser Therapy, Low-Level E2.594.540. Lateral Medullary Syndrome C10.228. ...

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Angioplasty, Balloon, Laser-Assisted. en_US. dc.subject.mesh. Coronary Disease --surgery. en_US. ... Excimer laser angioplasty was used to treat total occluded coronary arteries and instent restenosis lesions with high success ... The initial success rate of ELCA was 86.4 per cent which is comparable to plain balloon angioplasty performed during the same ... Acute and follow-up results of laser angioplasty: single center experience.. en_US. ...

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Coronary interventional procedures such as radial cardiac catheterization, mechanical support for patients in shock, rotational and orbital atherectomy, balloon angioplasty (PTCA), laser atherectomy, intra-vascular ultrasound, coronary stent implantation, left and right heart catheterization, cutting balloon and thrombectomy. (mchodessa.com)
I work in the vascular field and in the Eighties and Nineties, there were a lot of innovative technologies being introduced to supplement angioplasty such as arterial stents, atherectomy catheters, and lasers. (interventionalnews.com)

Percutaneous transluminal coronary angioplasty (PTCA), or angioplasty, is an invasive procedure performed to reduce or eliminate blockages in coronary arteries. (indiahealthtour.com)

Actuarial event-free survival (freedom from death, myocardial infarction, bypass surgery, or target vessel percutaneous transluminal coronary angioplasty) was 48.2% at 1 year. (duke.edu)

The stent is frequently placed during the procedure, to keep the artery open after the balloon is deflated and removed. (gomedii.com)
Often, a stent is implanted after angioplasty to keep the artery open and prevent restenosis (regrowth of plaque). (indiahealthtour.com)

In carotid angioplasty, stenting is a minimally invasive procedure in which a very small hollow tube, or catheter, is advanced from a blood vessel in the groin to the carotid arteries. (gomedii.com)
Because it destroys rather than compresses the plaque, the combination technique will have a lower restenosis rate, or re-narrowing of the artery, compared to balloon angioplasty or stenting. (medicaldesigndevelopment.com)
In most cases, balloon angioplasty is performed in combination with the stenting procedure. (exonmed.co)
Opening procedures - treatment of vasospasm or stenosis by angioplasty and stenting, chemical and mechanical thrombolysis in stroke. (ispub.com)
Coronary angioplasty and stenting is used to open up narrowed or blocked arteries which supply your heart muscle. (uelelamore.net)
During angioplasty and stenting, the narrowed artery is stretched open with a balloon ( angioplasty ), and a metal strut known as a stent is implanted into the coronary artery. (uelelamore.net)
Apollo is the pioneer in Coronary Artery Stenting and LASER angioplasty since 2002. (vaidam.com)

Interventional cardiologists perform angioplasty, which opens narrowed arteries. (indiahealthtour.com)

Techniques using laser energy in combination with a balloon catheter to perform angioplasty. (bvsalud.org)
Our surgeons use a variety of laser and catheter-based techniques to effectively treat varicose veins. (healthonecares.com)
In this technique, a specially designed catheter with a small balloon is carefully guided through the artery to the blockage, then inflated to widen the opening and increase the blood flow to the heart. (gomedii.com)
When the catheter is in place, a balloon may be inflated to open the artery and a stent is placed. (gomedii.com)
This catheter has a small balloon and the balloon is inflated once the catheter has been placed into the narrowed area of the coronary artery. (gomedii.com)
A balloon catheter, placed over a guide wire, is used to insert the stent into the narrowed artery. (exonmed.co)
They use a long, thin tube called a catheter that has a small balloon on its tip. (indiahealthtour.com)
A wire, with a tiny inflatable balloon, is passed through the catheter. (uelelamore.net)
The balloon is then deflated and the catheter and balloon are removed. (uelelamore.net)
A catheter (hollow tube) with a balloon at its tip is inserted into an artery in your groin, under your collarbone or through a small cut on your chest. (uelelamore.net)

Dr Viveka Kumar is the best Cardiologist in Delhi with experience in angioplasty, pacemaker implant, angiography & balloon valvotomy. (steeldirectory.net)

No. 6,135,991 to Ketan Muni, which describes the use of an occlusion device such as a balloon, to trap embolic particles released by a therapy such as angioplasty or the like. (justia.com)
Medical Products includes Licensees chronic total occlusion laser angioplasty catheters. (ipscio.com)
The Medical Products means the following Licensee-labeled non-laser functioning catheters and guidewires for Licensees laser therapy system that are specifically designed and labeled for use solely with laser angioplasty catheters (I) BIAS sheath, (ii) support catheters, (iii) cardiac lead locking device, and (iv) chronic total occlusion steerwires. (ipscio.com)
8. Percutaneous balloon occlusion of post-infarction ventricular septal defect. (prime-cardiology.com)
10. New technique using temporary balloon occlusion for transcatheter closure of patent ductus arteriosus with Gianturco coils. (prime-cardiology.com)

Balloon aortic valvuloplasty involves the same procedure to open up a narrowed aortic valve. (uelelamore.net)

Excimer laser angioplasty was used to treat total occluded coronary arteries and instent restenosis lesions with high success rate. (who.int)
Angioplasty is a surgical technique for reopening narrowed or blocked arteries in the heart (coronary arteries) without doing major surgery Today we are going to discuss angioplasty and how it will be successful for your health. (gomedii.com)
Fluoroscopy is a special x-ray which assists the physician in the location of blockages in the coronary arteries as the contrast dye moves through the arteries. (gomedii.com)
The control provided by the ultrasound and the low-power laser will lower the risk of dissection and perforation in arteries. (medicaldesigndevelopment.com)
Angioplasty that is also called percutaneous coronary interventions or balloon angioplasty is an invasive medical procedure to dilate heart arteries. (exonmed.co)
Symptoms of blocked arteries (like chest pain or shortness of breathing) can be improved through angioplasty procedure. (exonmed.co)
Angioplasty can widen blocked arteries so normal blood flow can move to your heart muscle. (exonmed.co)

The wavelength of light emitted by Excimer laser is within the UVB range at precisely 308nm. (stcc.org)

Safety and quality are carefully monitored by a panel of physicians who review every angioplasty procedure done in our hospital. (bswhealth.com)
In this procedure balloon is inserted to blocked area in the point that blood flow has been reduced or cutoff. (exonmed.co)
Angioplasty patients often are given aspirin at least 2 hours before the procedure. (indiahealthtour.com)
Coronary angioplasty performed in India is a medical procedure in which a balloon is used to open a blockage in a coronary (heart) artery narrowed by atherosclerosis. (indiahealthtour.com)
A procedure in which a laser is used to correct vision problems by reshaping the cornea. (harvard.edu)
The Left Ventricular Assist Device procedure involves the placement of a battery-operated, mechanical pump, which then helps the left ventricle (main pumping chamber of the heart) pump blood to the rest of the body. (vaidam.com)

BACKGROUND: Percutaneous excimer laser coronary angioplasty (PELCA) has been approved for treatment of diseased saphenous vein bypass grafts. (duke.edu)
CONCLUSIONS: Excimer laser angioplasty with adjunctive balloon angioplasty can be safely and successfully performed in diseased, old saphenous vein bypass graft lesions considered at high risk for reintervention. (duke.edu)
Other approaches such as the routine use of additional anticoagulation (eg, warfarin) should be considered to reduce the risk of late occlusions and restenosis after laser angioplasty of bypass grafts. (duke.edu)
Discusses treatment with medicines, angioplasty, or bypass surgery. (cardiology-consultants.com)
But more than 40 years, 4 bypass surgeries, 30 angioplasties, and a combined pacemaker/defibrillator later, he's still thriving. (cardiology-consultants.com)

In this technique, a laser is used to vaporize the blockage in the artery. (gomedii.com)
The balloon presses the fatty tissue in the artery and makes a larger opening inside the artery for improved blood flow. (gomedii.com)
Atherosclerosis, a buildup of plaque, can lead to heart disease, artery disease, and chronic kidney disease and is traditionally treated by inserting and inflating a balloon to expand the artery. (medicaldesigndevelopment.com)
High-power laser treatments direct thermal energy to vaporize water in the artery and create a vapor bubble, which expands and collapses to break the plaque. (medicaldesigndevelopment.com)
Angioplasty involves temporarily inserting and expanding a tiny balloon at the site of your blockage to help widen a narrowed artery. (exonmed.co)
Once in place, the balloon is inflated and the stent expands to the size of the artery and holds it open. (exonmed.co)
Angioplasty applies a tiny balloon to widen the artery. (exonmed.co)
The balloon opens the artery by pushing the plaque through artery wall. (exonmed.co)
The blocked artery is opened by inflating a tiny balloon. (exonmed.co)
Heart aneurysm - a balloon-like bulge in the wall of an artery. (medlineplus.gov)
Opening a blockage, or a plaque, in a coronary artery typically involves the use of an angioplasty balloon. (indiahealthtour.com)
The devices used to open the artery (e.g., balloon, laser, burr) are advanced to the blockage through the catheters. (indiahealthtour.com)
They inflate the balloon at the blockage site in the artery to flatten or compress the plaque against the artery wall. (indiahealthtour.com)

Robotic-assisted surgery is a type of minimally invasive surgery. (medlineplus.gov)
A narrowed valve can sometimes be stretched with balloon valve surgery. (uelelamore.net)
Epi-LASIK is a form of laser eye surgery that uses techniques of both LASIK and LASEK surgeries. (lyfboat.com)
In this surgery, the doctor uses an epithelial separator (plastic blade) to separate the upper layer of the cornea from the rest, uses an excimer laser to reshape the underlying cornea in order to reflect light properly, and then replaces the upper layer. (lyfboat.com)

Assist in Transcatheter Aortic Valve Replacement (TAVR) procedures under the structural heart program. (mssm.edu)
Antegrade Laser Fenestration of Aortic Stent-Graft Extension Using Fusion Imaging for Urgent Treatment of Symptomatic Abdominal Aneurysm with Type 1 Endoleak. (chu-mondor.fr)

The extent of laser ablation remains limited by the diameter and effectiveness of the catheters. (duke.edu)
This license granted for Laser Angioplasty Catheters is non-cancelable by Licensee during the period from the Effective Date through June 30, 2009. (ipscio.com)
This license granted for Non-Laser Functioning Catheters and Guidewires for use with Licensees Laser Therapy Systems is non-exclusive. (ipscio.com)
The Medical Products means excimer laser angioplasty catheters specifically adapted for coronary and peripheral use. (ipscio.com)

Valve-sparing Tetralogy of Fallot repair using intra-operative balloon pulmonary valvotomy -TruptiDongreChanglani, Benedict Raj, Edwin Francis, Mahesh Kappanayil, R Krishna Kumar. (theovacare.com)

You have to ask your doctor if you are allergic to iodine or seafood since angioplasty involves injecting you with an iodine-based dye. (gomedii.com)

Excimer lasers dissociate fine layers over tissue surfaces through controlled ablation instead of burning. (stcc.org)

Other treatments based on lasers can remove blockages rather than simply compressing them but are used infrequently, because they have a high risk of complication and low efficacy. (medicaldesigndevelopment.com)
Moreover, People that suffer from chest pain or blockages are often candidates for angioplasty. (exonmed.co)

The Coronary Care Unit also cares for many patients following Cardiac Cath Lab procedures such as balloon angioplasty and coronary stent placement, and permanent pacemaker or automated internal cardioverter-defibrillator (AICD) placement. (mchodessa.com)
Licensee designs, manufactures, markets and distributes single-use medical devices used in minimally invasive surgical procedures within the vascular system in conjunction with our proprietary excimer laser system. (ipscio.com)
lasers are used in certain surgeries and other medical procedures. (harvard.edu)

Singh and collaborators are also using the methodology for photo-mediated ultrasound therapy and ultrasound-assisted endovascular laser thrombolysis. (medicaldesigndevelopment.com)
Singh will expand upon these additional applications in poster sessions at the ASA meeting, with "Analysis of cavitation induced stresses on blood vessel wall during photo-mediated ultrasound therapy using finite-element based numerical models" and "Combining ultrasound and endovascular laser for thrombolysis," on May 25, 5-7 p.m. (medicaldesigndevelopment.com)

The right doctor to consult for left ventricular assist device placement is a Cardiac Surgeon. (vaidam.com)

Rohit Singh, of the University of Kansas, and other researchers developed a method that combines a low-power laser with ultrasound to remove arterial plaque safely and efficiently. (medicaldesigndevelopment.com)
Overall, the combination of ultrasound and laser reduces the need for laser power and improves the efficiency of atherosclerotic plaque removal. (medicaldesigndevelopment.com)
Plaque can be cut out, ablated with a laser, or bored out using a surgical drill bit. (indiahealthtour.com)

If you have angina that is not responded to medication or improving lifestyle it seems that angioplasty is useful for you. (exonmed.co)

For example, the extraction section may be combined with balloons for angioplasty and/or distal protection. (justia.com)

In 1981, Mirhoseini et al demonstrated that the carbon dioxide laser could generate small transmyocardial channels in the ischemic myocardium of a dog. (medscape.com)

Acorn Cardiovascular, Inc. -- The firm was incorporated in late 1996 and has aggressively developed the Cardiac Support Device (CSD), an investigational device designed to assist in the treatment of NYHA Class III heart failure. (home-medical-equipment-classifieds.com)
It has also been suggested to use a rheolytic or Possis device with a balloon. (justia.com)
A ventricular assist device to help the heart pump blood. (medlineplus.gov)
A Left Ventricular Assist Device, or LVAD, is a mechanical pump that is implanted inside a person's chest to help a weakened heart pump blood. (vaidam.com)

Transmyocardial laser revascularization (TMLR) is based on the use of a high-powered carbon dioxide or other laser that interjects a strong energy pulse into the left ventricle, vaporizing the ventricular muscle and creating a transmural channel with a 1-mm diameter. (medscape.com)
Uses a laser to make small channels through part of the heart muscle (transmyocardial laser revascularization). (medlineplus.gov)

Angioplasty is performed in a catheterization laboratory equipped with x-ray equipment and monitors. (indiahealthtour.com)

Combining low-power lasers and ultrasound techniques is not limited to atherosclerosis treatments. (medicaldesigndevelopment.com)

Early and late quantitative angiographic results of vein graft lesions treated by excimer laser with adjunctive balloon angioplasty. (duke.edu)

Singh recently described preliminary results in his presentation, "A novel ultrasound-assisted laser technique to remove atherosclerotic plaques," at the 182nd Meeting of the Acoustical Society of America. (medicaldesigndevelopment.com)
Both the laser and ultrasound techniques are commonly used by clinicians and should be easy to teach and implement following the in vivo studies. (medicaldesigndevelopment.com)

What Do you Understand about laser hatching? (medicaltours.care)
Laser Hatching is a technique to remove the zona pellucida surrounding the embryos or blastocysts, which can be easily done by laser. (medicaltours.care)
Assisted hatching is done , hen an IVF or ICSI cycle fails. (medicaltours.care)

The first option of in-office PAD treatment is Angioplasty. (westernvascular.com)

Permanent hair removal technique that uses a laser to target and heat melanin in the hair shaft, which damages the hair follicle. (harvard.edu)

The key test points of the electromagnetic radiation, hydrogen thyratron, main discharge circuit and laser outlet, are determined by the mechanical structure and the theory of electromagnetic radiation. (stcc.org)

However, much of this research received little attention because it was not considered nearly as promising as the emerging techniques involving direct myocardial revascularization, such as CABG and angioplasty. (medscape.com)
The higher success rates are due to adoption of newer techniques and hardware including hybrid/retrograde angioplasty,dedicated extra time, high quality/low radiation cathlabs with large sized monitors, and trained staff/technicians/doctors. (steeldirectory.net)

Then the balloon is removed and blood easily flows through vessels. (exonmed.co)
Sometimes ischemia or severely reduced blood flow in heart muscle needs to be assessed by angioplasty. (exonmed.co)
Medications Symptom relief medication- Your doctor may prescribe medication to increase blood flow, thin the blood, and assist in widening the vessel body. (westernvascular.com)

Please be advised that this information is made available to assist our patients to learn more about their heart health. (cardiology-consultants.com)

MSH Interventional Cardiology Fellowship | Icahn School of Medicine (icahn.mssm.edu)

Andrew Peter Selwyn, M.D., M.B.Ch.B. | Harvard Catalyst Profiles | Harvard Catalyst (connects.catalyst.harvard.edu)

Presentations Page Professor Sherif Sultan Vascular Galway Eire (sherifsultan.ie)

Imaging Sciences and Intervention Radiology - Sree Chitra Tirunal Institute for Medical Sciences and Technology, Trivandrum ... (sctimst.ac.in)

Cardiac Catheterization | Baylor Scott & White Health (bswhealth.com)

Coronary Angioplasty in Iran | Best Angioplasty (PTCA) in Iran at the best price (exonmed.co)

Lawrence 'Rusty' Hofmann, MD's Profile | Stanford Profiles (profiles.stanford.edu)

Anatomy14

Organisms3

Diseases39

Chemicals and Drugs11

Analytical, Diagnostic and Therapeutic Techniques and Equipment79

Phenomena and Processes10

Technology, Industry, Agriculture3

Information Science3

Health Care17

Treatment of in-stent restenosis with excimer laser coronary angioplasty versus rotational atherectomy: comparative mechanisms and results. (1/46)

Six-month clinical and angiographic outcome after successful excimer laser angioplasty for in-stent restenosis. (2/46)

Clinical and angiographic outcome in patients with in-stent restenosis and repeat target lesion revascularisation in small coronary arteries. (3/46)

Treatment of in-stent coronary restenosis with excimer laser angioplasty. (4/46)

Coronary flow velocity and disturbed flow predict adverse clinical outcome after coronary angioplasty. (5/46)

Excimer laser-assisted high-flow extracranial/intracranial bypass in patients with symptomatic carotid artery occlusion at high risk of recurrent cerebral ischemia: safety and long-term outcome. (6/46)

Treatment of in-stent restenosis with excimer laser coronary angioplasty. (7/46)

Intracoronary ultrasound predictors of adverse outcomes after coronary artery interventions. (8/46)

Angioplasty, Balloon

Angioplasty, Balloon, Coronary

Catheterization

Lasers

Angioplasty

Coronary Vessels

Equipment Design

Swine

Angioplasty, Laser

Stents

Balloon Occlusion

Recurrence

Constriction, Pathologic

Intra-Aortic Balloon Pumping

Treatment Outcome

Coronary Angiography

Coronary Disease

Gastric Balloon

Follow-Up Studies

Lasers, Solid-State

Iliac Artery

Laser Coagulation

Atherectomy, Coronary

Arterial Occlusive Diseases

Myocardial Infarction

Femoral Artery

Time Factors

Vascular Patency

Laser Therapy, Low-Level

Tunica Intima

Graft Occlusion, Vascular

Angiography

Aortic Coarctation

Carotid Artery Injuries

Popliteal Artery

Balloon Valvuloplasty

Coronary Artery Bypass

Prospective Studies

Angioplasty, Balloon, Laser-Assisted

Angina Pectoris

Lasers, Excimer

Coronary Restenosis

Retreatment

Retrospective Studies

Hyperplasia

Thrombolytic Therapy

Beta Particles

Atherectomy

Pulmonary Valve Stenosis

Ischemia

Ultrasonography, Interventional

Renal Artery Obstruction

Cardiac Catheterization

Carotid Stenosis

Carotid Arteries

Coronary Circulation

Postoperative Complications

Lasers, Dye

Intermittent Claudication

Muscle, Smooth, Vascular

Laser Scanning Cytometry

Platelet Aggregation Inhibitors

Leg

Arteriosclerosis

Dilatation

Reoperation

Feasibility Studies

Coronary Thrombosis

Mitral Valve Stenosis

Vascular Access Devices

Myocardial Revascularization

Alloys

Coronary Artery Disease

Coronary Stenosis

Saphenous Vein

Ultrasonography, Doppler, Duplex

Electrocardiography

Keratomileusis, Laser In Situ

Angina, Unstable

Peripheral Vascular Diseases