Angioplasty laser. 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.

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.

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.

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

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.

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

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.

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

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.

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

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.

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.

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

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.

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

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

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.

The veins and arteries of the HEART.

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

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

Obstruction of flow in biological or prosthetic vascular grafts.

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)

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

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.

Radiography of blood vessels after injection of a contrast medium.

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.

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

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.

Narrowing or stricture of any part of the CAROTID ARTERIES, most often due to atherosclerotic plaque formation. Ulcerations may form in atherosclerotic plaques and induce THROMBUS formation. Platelet or cholesterol emboli may arise from stenotic carotid lesions and induce a TRANSIENT ISCHEMIC ATTACK; CEREBROVASCULAR ACCIDENT; or temporary blindness (AMAUROSIS FUGAX). (From Adams et al., Principles of Neurology, 6th ed, pp 822-3)

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

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.

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.

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.

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).

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.

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)

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.

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.

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.

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

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 circulation of blood through the CORONARY VESSELS of the HEART.

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

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.

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.

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.

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

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.

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

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

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

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

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

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.

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

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.

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.

Thickening and loss of elasticity of the walls of ARTERIES of all sizes. There are many forms classified by the types of lesions and arteries involved, such as ATHEROSCLEROSIS with fatty lesions in the ARTERIAL INTIMA of medium and large muscular arteries.

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

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.

The vein which drains the foot and leg.

Methods of creating machines and devices.

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.

Fibrinolysin or agents that convert plasminogen to FIBRINOLYSIN.

Hypertension due to RENAL ARTERY OBSTRUCTION or compression.

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

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.

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

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

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.

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

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.

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.

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

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

Narrowing or constriction of a coronary artery.

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.

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)

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.

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

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

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

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

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.

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

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

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

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.

The nonstriated involuntary muscle tissue of blood vessels.

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

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

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.

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 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.

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.

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

Agents that prevent clotting.

Operative procedures for the treatment of vascular disorders.

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.

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.

A method of non-invasive, continuous measurement of MICROCIRCULATION. The technique is based on the values of the DOPPLER EFFECT of low-power laser light scattered randomly by static structures and moving tissue particulates.

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.

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.

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

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.

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.

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

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

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 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.

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

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).

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 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.

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

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)

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.

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 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.

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 light microscopic technique in which only a small spot is illuminated and observed at a time. An image is constructed through point-by-point scanning of the field in this manner. Light sources may be conventional or laser, and fluorescence or transmitted observations are possible.

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.

The performance of dissections with the aid of a microscope.

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

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).

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.

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.

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.

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.

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.

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.

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.

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.

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.

The systems and processes involved in the establishment, support, management, and operation of registers, e.g., disease registers.

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

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

Subspecialty of radiology that combines organ system radiography, catheter techniques and sectional imaging.

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.

The technology of transmitting light over long distances through strands of glass or other transparent material.

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.

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.

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.-.

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.

Surgical techniques on the CORNEA employing LASERS, especially for reshaping the CORNEA to correct REFRACTIVE ERRORS.

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.

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.

VASCULAR DISEASES that are associated with DIABETES MELLITUS.

The period following a surgical operation.

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)

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.

A statistical technique that isolates and assesses the contributions of categorical independent variables to variation in the mean of a continuous dependent variable.

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.

The coagulation of tissue by an intense beam of light, including laser (LASER COAGULATION). In the eye it is used in the treatment of retinal detachments, retinal holes, aneurysms, hemorrhages, and malignant and benign neoplasms. (Dictionary of Visual Science, 3d ed)

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

The flow of BLOOD through or around an organ or region of the body.

Thin strands of transparent material, usually glass, that are used for transmitting light waves over long distances.

Examination of the interior of the eye with an ophthalmoscope.

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

That portion of the electromagnetic spectrum usually sensed as heat. Infrared wavelengths are longer than those of visible light, extending into the microwave frequencies. They are used therapeutically as heat, and also to warm food in restaurants.

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.

Insertion of a catheter into a peripheral artery, vein, or airway for diagnostic or therapeutic purposes.

A versatile contrast medium used for DIAGNOSTIC X-RAY RADIOLOGY.

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.

Delivery of drugs into an artery.

Bleeding or escape of blood from a vessel.

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 resulting from diminution of cardiac output in heart disease.

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.

Radiographic visualization or recording of a vein after the injection of contrast medium.

The vessels carrying blood away from the capillary beds.

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.

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)

Death and putrefaction of tissue usually due to a loss of blood supply.

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.

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.

Substances used to allow enhanced visualization of tissues.

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.

The period of confinement of a patient to a hospital or other health facility.

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)

The use of photothermal effects of LASERS to coagulate, incise, vaporize, resect, dissect, or resurface tissue.

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.

Endoscopes used for viewing the interior of blood vessels.

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.

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.

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.

A low-osmolar, ionic contrast medium used in various radiographic procedures.

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.

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.

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.

The vessels carrying blood away from the heart.

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

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.

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.

Drugs used to cause dilation of the blood vessels.

Ultrasonic recording of the size, motion, and composition of the heart and surrounding tissues. The standard approach is transthoracic.

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.

The circulation of the BLOOD through the MICROVASCULAR NETWORK.

Pacemaker lead extraction with the laser sheath: results of the pacing lead extraction with the excimer sheath (PLEXES) trial. (1/33)

OBJECTIVES: The purpose of this study was to evaluate the safety and effectiveness of pacemaker lead extraction with the excimer sheath in comparison to nonlaser lead extraction. BACKGROUND: Fibrotic attachments that develop between chronically implanted pacemaker leads and to the venous, valvular and cardiac structures are the major obstacles to safe and consistent lead extraction. Locking stylets and telescoping sheaths produce a technically demanding but effective technique of mechanically disrupting the fibrosis. However, ultraviolet excimer laser light dissolves instead of tearing the tissue attachments. METHODS: A randomized trial of lead extraction was conducted in 301 patients with 465 chronically implanted pacemaker leads. The laser group patients had the leads removed with identical tools as the nonlaser group with the exception that the inner telescoping sheath was replaced with the 12-F excimer laser sheath. Success for both groups was defined as complete lead removal with the randomized therapy without complications. RESULTS: Complete lead removal rate was 94% in the laser group and 64% in the nonlaser group (p = 0.001). Failed nonlaser extraction was completed with the laser tools 88% of the time. The mean time to achieve a successful lead extraction was significantly reduced for patients randomized to the laser tools, 10.1 +/- 11.5 min compared with 12.9 +/- 19.2 min for patients randomized to nonlaser techniques (p < 0.04). Potentially life-threatening complications occurred in none of the nonlaser and three of the laser patients, including one death (p = NS). CONCLUSIONS: Laser-assisted pacemaker lead extraction has significant clinical advantages over extraction without laser tools and is associated with significant risks. (+info)

Laser angioplasty of restenosed coronary stents: results of a multicenter surveillance trial. The Laser Angioplasty of Restenosed Stents (LARS) Investigators. (2/33)

OBJECTIVES: This study evaluated safety and efficacy of excimer laser angioplasty for treatment of restenosed or occluded coronary stents. BACKGROUND: Balloon angioplasty of in-stent restenosis is limited by a high recurrence rate. Debulking by laser angioplasty is a novel concept to treat in-stent restenosis. METHODS: A total of 440 patients with restenoses or occlusions in 527 stents were enrolled for treatment with concentric or eccentric laser catheters and adjunctive balloon angioplasty. RESULTS: Laser angioplasty success (< or =50% diameter stenosis after laser treatment or successful passage with a 2.0-mm or 1.7-mm eccentric laser catheter) was achieved in 92% of patients. Adjunctive balloon angioplasty was performed in 99%. Procedural success (laser angioplasty success followed by < or =30% stenosis with or without balloon angioplasty) was 91%. There was neither a significant difference in success with respect to lesion length, nor were there differences between small and large vessels or native vessels and vein grafts. Success was higher and residual stenosis lower using large or eccentric catheters. Serious adverse events included death (1.6%, not directly laser catheter related), Q-wave myocardial infarction (0.5%), non-Q-wave infarction (2.7%), cardiac tamponade (0.5%) and stent damage (0.5%). Perforations after laser treatment occurred in 0.9% of patients and after balloon angioplasty in 0.2%. Dissections were visible in 4.8% of patients after laser treatment and in 9.3% after balloon angioplasty. Reinterventions during hospitalization were necessary in 0.9% of patients; bypass surgery was performed in 0.2%. CONCLUSIONS: Excimer laser angioplasty with adjunctive balloon angioplasty is a safe and efficient technology to treat in-stent restenoses. These data justify a randomized comparison with balloon angioplasty. (+info)

Effect of plaque debulking and stenting on short- and long-term outcomes after revascularization of chronic total occlusions. (3/33)

OBJECTIVES: We evaluated the effect of plaque burden modification (debulking) on the short- and long-term clinical outcomes of patients with a totally occluded native coronary artery undergoing successful stent deployment. BACKGROUND: Although the primary success rate of crossing a chronic totally occluded coronary artery has improved with the development of new interventional devices and guidewires, the rate of acute reocclusion and restenosis remains high. METHODS: The in-hospital and late clinical outcomes of 150 patients who had undergone successful stenting of 176 chronic total occlusions were analyzed. After successful crossing of the lesion, 44 patients with 50 lesions underwent debulking by laser angioplasty, rotational or directional atherectomy followed by stenting, whereas 106 patients with 126 lesions underwent stent implantation without prior debulking. RESULTS: Baseline clinical and angiographic characteristics were similar for the two groups, except for a higher incidence of left anterior descending coronary artery location and longer lesions in the group of patients who underwent debulking prior to stenting. In-hospital mortality, myocardial infarction and repeat angioplasty rates were similar for the two groups. At a mean 14 +/- 8 months follow-up time, there were no deaths in either group, and target lesion revascularization rates were the same (16.3% in the debulking plus stent group vs. 14.4% in the stent alone group, p = NS). CONCLUSIONS: Treatment of chronic total native coronary artery occlusions with stent deployment with and without lesion modification (debulking) results in a favorable in-hospital outcome, with relatively low long-term target lesion revascularization rates. (+info)

Comparison of debulking followed by stenting versus stenting alone for saphenous vein graft aortoostial lesions: immediate and one-year clinical outcomes. (4/33)

OBJECTIVES: We compared in-hospital and one-year clinical outcomes in patients undergoing debulking followed by stent implantation versus stenting alone for saphenous vein graft (SVG) aortoostial lesions. BACKGROUND: Stent implantation in SVG aortoostial lesions may improve procedural and late clinical outcomes. However, the impact of debulking before stenting in this complex lesion subset is unknown. METHODS: We studied 320 consecutive patients (340 SVG aortoostial lesions) treated with Palmaz-Schatz stents. Debulking with excimer laser or atherectomy was performed in 133 patients (139 lesions) before stenting (group I), while 187 patients (201 lesions) underwent stent implantation without debulking (group II). Procedural success and late clinical outcomes were compared between the groups. RESULTS: Overall procedural success (97.6%) was similar between the groups. Procedural complications were also similar (2.2% for group I and 2.6% for group II). At one-year follow-up, target lesion revascularization (TLR) was 19.4% for group I and 18.2% for group II (p = 0.47). There was no difference in cumulative death or Q wave myocardial infarction between the groups. Overall cardiac event-free survival was similar (69% for group I and 68% for group II). By Cox regression analysis, the independent predictors of late cardiac events were final lumen cross-sectional area (CSA) by intravascular ultrasound (IVUS) (p = 0.001) and restenotic lesions (p = 0.01). Similarly, final IVUS lumen CSA (p = 0.0001) and restenotic lesions (p = 0.006) were found to predict TLR at one year. CONCLUSIONS: These results suggest that, in most patients with SVG aortoostial lesions, debulking before stent implantation may not be necessary. (+info)

Photoangioplasty with local motexafin lutetium delivery reduces macrophages in a rabbit post-balloon injury model. (5/33)

OBJECTIVE: Motexafin lutetium (Lu-Tex, Antrin Injection) is a photosensitizer that selectively accumulates in atheromatous plaque where it can be activated by far-red light. The localization and retention of intra-arterially administered Lu-Tex and its efficacy following activation by endovascularly delivered light (photoangioplasty) was evaluated. METHODS: Bilateral iliac artery lesions were induced in 17 rabbits by balloon denudation, followed by a high cholesterol diet. Lu-Tex distribution within the atheroma was examined (n=8) following local injection. Fluorescence spectral imaging and chemical extraction techniques were used to measure Lu-Tex levels within the atheroma and adjacent normal tissue. Photoactivation was performed 15 min following Lu-Tex administration (180 J/cm fiber at 200 mW/cm fiber). Two weeks post photoangioplasty, vessels were harvested and hematoxylin and eosin (H&E) and RAM11 (macrophages) staining was performed. RESULTS: Local delivery of Lu-Tex achieved immediate high concentrations within plaque (mean 40x control iliac atheroma). Mean percent plaque area in the treated segments was significantly lower than in the non-treated contralateral lesions (73 vs. 82%, P<0.01). No medial damage was observed. Quantitative analysis using RAM11 positive cells revealed significant reduction of macrophages in treated lesions in both the intima (5 vs. 22%, P<0.01) and in media (8 vs. 23%, P<0.01) compared to untreated contralateral segments. CONCLUSIONS: Local delivery provides high levels of Lu-Tex selectively within atheroma. Photoactivation results in a significant decrease in macrophage and a small decrease in atheroma burden without damage to the normal vessel wall. (+info)

Cerebral blood flow restoration and reperfusion injury after ultraviolet laser-facilitated middle cerebral artery recanalization in rat thrombotic stroke. (6/33)

BACKGROUND AND PURPOSE: A reversible model of focal thrombotic stroke was developed in the rat and examined for histological evidence of reperfusion injury after clinically relevant times of recanalization. METHODS: The distal middle cerebral artery of 28 male Sprague-Dawley rats was occluded by 562-nm laser-driven photothrombosis for 0.5, 2, and 3 hours or permanently (each n=7) and was recanalized by 355-nm UV laser irradiation. Occlusive material was examined by transmission electron microscopy. Cortical cerebral blood flow was monitored by laser-Doppler flowmetry. Brain infarcts were examined histologically at 3 days. RESULTS: After occlusion, cortical cerebral blood flow was reduced to 33+/-4% of baseline for all groups and was restored to 82+/-9%, 75+/-3%, and 93+/-7% of baseline for the 0.5-, 2-, and 3-hour groups, respectively, following recanalization after 29+/-8, 38+/-20, and 70+/-33 minutes of UV laser irradiation. The thrombotic occlusion contained compactly aggregated platelets but no fibrin, with length (1.2 to 1.8 mm) proportional to the ischemic period. During recanalization, microchannels containing erythrocytes and scattered leukocytes and bordered by intact disaggregated platelets infiltrated the thrombus. Infarct volumes (mm3) at 3 days were 12+/-3 for the permanent case and 8+/-4, 24+/-3, and 30+/-9 for the 0.5-, 2-, and 3-hour cases, respectively, thus demonstrating reperfusion injury histologically in the latter 2 groups. No hemorrhage was seen. CONCLUSIONS: UV laser-facilitated dissolution of a conventionally refractory platelet thrombus provides a novel and effective method for restoring blood flow without hemorrhagic complications during thrombotic stroke. This was the first observation of histologically confirmed reperfusion injury in such a model. (+info)

Endovascular surgery for peripheral arterial occlusive disease. A critical review. (7/33)

Endovascular surgery is a new multidisciplinary field that applies the recently innovated techniques of angioscopy, intraluminal ultrasound, balloon angioplasty, laser, mechanical atherectomy, and stents. This field can be defined as a diagnostic and therapeutic discipline that uses catheter-based systems to treat vascular disease. As such, it integrates the subspecialties of vascular surgery, interventional radiology, interventional cardiology, and biomedical engineering for the common purpose of improving arterial hemodynamics. Endovascular surgery offers many potential benefits: long incisions are replaced with a puncture wound, the need for postoperative intensive care is significantly reduced, major cardiac and pulmonary complications from general anesthesia are side stepped, and the dollar savings could be dramatic as the need for intensive care unit and in-hospital stay diminishes. Despite these technological advancements, endovascular surgery is still in its infancy and currently has limited applications. This review provides an updated summary of endovascular surgery today and addresses some of the obstacles still preventing its widespread use. (+info)

Meta-analysis of randomized trials of percutaneous transluminal coronary angioplasty versus atherectomy, cutting balloon atherotomy, or laser angioplasty. (8/33)

OBJECTIVES: We conducted a systematic overview (meta-analysis) of randomized trials of balloon angioplasty versus coronary atherectomy, laser angioplasty, or cutting balloon atherotomy to evaluate the effects of plaque modification during percutaneous coronary intervention. BACKGROUND: Several mechanical approaches have been developed that ablate or section atheromatous plaque during percutaneous coronary interventions to optimize acute results, minimize intimal injury, and reduce complications and restenosis. METHODS: Sixteen trials (9,222 patients) constitute the randomized controlled experience with atherectomy, laser, or atherotomy versus balloon angioplasty with or without coronary stenting. Each trial tested the hypothesis that ablative therapy would result in better clinical or angiographic results than balloon dilation alone. RESULTS: Short-term death rates (<31 days) were not improved by the use of ablative procedures (0.3% vs. 0.4%, odds ratio [OR] 0.94 [95% confidence interval 0.46 to 1.92]), but periprocedural myocardial infarctions (4.4% vs. 2.5%, OR 1.83 [95% CI 1.43 to 2.34]) and major adverse cardiac events (5.1% vs. 3.3%, OR 1.54 [95% CI 1.25 to 1.89]) were increased. Angiographic restenosis rates (6,958 patients) were not improved with the ablative devices (38.9% vs. 37.4%, OR 1.06 [95% CI 0.97 to 1.17]). No reduction in revascularization rates (25.2% vs. 24.5%, OR 1.04 [95% CI 0.94 to 1.14]) or cumulative adverse cardiac events rates up to one year after treatment were seen with ablative devices (27.8% vs. 26.1%, OR 1.09 [95% CI 0.99 to 1.20]). CONCLUSIONS: The combined experience from randomized trials suggests that ablative devices failed to achieve predefined clinical and angiographic outcomes. This meta-analysis does not support the hypothesis that routine ablation or sectioning of atheromatous tissue is beneficial during percutaneous coronary interventions. (+info)

Subsequent work introduced the excimer laser for use in angioplasty. Xenon chloride (308 nm) excimer lasers can also treat a ... An excimer laser, sometimes more correctly called an exciplex laser, is a form of ultraviolet laser which is commonly used in ... These were the electra and Nike laser systems. Because the excimer laser is a gas-based system, the laser does not heat up like ... particularly the XeCl laser, as pump sources for tunable dye lasers, mainly to excite laser dyes emitting in the blue-green ...

https://en.wikipedia.org/wiki/Excimer_laser

Other applications include laser assisted angioplasties and laser-assisted vascular anastomosis. Lasers are used to treat ... III using CO2 lasers in the 1990s. Lasers are also used for laser-assisted lipectomy. Various types of laser surgery are used ... CO2 lasers are both efficient at cutting and coagulating. A range of lasers such as erbium, dye, Q switch lasers, and CO2 are ... CO2 lasers were the dominant soft-tissue surgical lasers as of 2010. Soft-tissue laser surgery is used in a variety of ...

https://en.wikipedia.org/wiki/Laser_surgery

... the first laser angioplasty procedure in America in 1985, and the first laser coronary endarterectomy procedure in America in ... "Efficiency and safety of optically modified fiber tips for laser angioplasty". Journal of the American College of Cardiology. ... In 1986, Texas Heart Institute performed the first peripheral laser procedure in Texas- and one of the first in the United ...

https://en.wikipedia.org/wiki/CHI_St._Luke's_Health

... and for laser surgery, including laser angioplasty and eye surgery. Some noble gases have direct application in medicine. ... These lasers produce ultraviolet light, which, due to its short wavelength (193 nm for ArF and 248 nm for KrF), allows for high ... The excimers used for lasers may be noble gas dimers such as Ar2, Kr2 or Xe2, or more commonly, the noble gas is combined with ... The noble gases are used in excimer lasers, which are based on short-lived electronically excited molecules known as excimers. ...

https://en.wikipedia.org/wiki/Noble_gas

This is traditionally achieved by balloon angioplasty or debulking strategies including rotational, orbital and laser ... 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 ...

https://en.wikipedia.org/wiki/Percutaneous_coronary_intervention

He also conducted research on laser systems for the treatment of cardiovascular disease and on the rare and serious unforeseen ... complication of lesions during Balloon angioplasty (CBA). Abela was the recipient of the 1998 Caroline and William Mark ... "Lasers in Cardiovascular Medicine and Surgery: Fundamentals and Techniques". Martinus Nijhoff, (Kluwer), Boston. 1990. George S ... US 5061265, Abela, George S. & Friedl, Stephan E., "Laser treatment apparatus and method", published 1991-10-29, assigned to ...

https://en.wikipedia.org/wiki/George_S._Abela

Vascular bypass and angioplasty are the two primary means of revascularization. The term derives from the prefix re-, in this ... When those cannot be done, transmyocardial revascularization or percutaneous myocardial revascularization, done with a laser, ... coronary balloon angioplasty) are the two primary means of revascularization. ...

https://en.wikipedia.org/wiki/Revascularization

When performing TMR a qualified cardiac surgeon delivers a precise laser therapy (either with a Holmium:YAG laser or CO2), ... Most people with coronary artery disease are treated with angioplasty and stenting or coronary bypass surgery and medications ... TMR, or transmyocardial laser revascularization, is a newer treatment aimed at improving blood flow to areas of the heart that ... The precise laser therapy is delivered to create small channels into the heart chamber. During a typical procedure, ...

https://en.wikipedia.org/wiki/Transmyocardial_revascularization

By equipment used: Laser surgery involves use of a laser for cutting tissue instead of a scalpel or similar surgical ... Other procedures that do not necessarily fall under this rubric, such as angioplasty or endoscopy, may be considered surgery if ... laser ablation of the cornea) or to a radiosurgical procedure (e.g. irradiation of a tumor). Surgical procedures are commonly ... as in laparoscopic surgery or angioplasty. By contrast, an open surgical procedure such as a laparotomy requires a large ...

https://en.wikipedia.org/wiki/Surgery

In 2007, Lourdes began employing cool, pulsed laser technology to clear blockages in blood vessels of patients with peripheral ... The cardiologists specialize in angioplasty and stent placement; open heart surgery and valve replacement; electrophysiology; ...

https://en.wikipedia.org/wiki/Virtua_Our_Lady_of_Lourdes_Hospital

After getting the US FDA approval in the 1980s the balloon is now used in angioplasty surgeries all over the world. Sahota went ... As an inventor, he holds a total of 24 patents and many other medical inventions such as Red Laser Light for prevention of ... On 17 January 1990 Sahota performed the first coronary angioplasty in North India and nine more followed in the week that the ... He is the inventor of the FDA approved Perfusion Balloon Angioplasty known as "Sahota Perfusion Balloon". Sahota holds two ...

https://en.wikipedia.org/wiki/Harvinder_Sahota

Angioplasty balloons Atherectomy lasers and rotational devices Left atrial appendage occlusion devices Electrophysiology:[ ...

https://en.wikipedia.org/wiki/Cardiac_catheterization

He is a trustee of Indo-French Cardiovascular Foundation for Research, Education and Training in the field of Angioplasty and a ... He is known to perform Percutaneous Myocardial Laser Revascularization, reported to be among the few cardiologists in the World ... Chandra P, Cribier A, Seth A (1995). "Utility of Pilot wire in angioplasty of tortuous and highly angulated coronary arteries ... Chandra P, Cribier A, Seth A (1995). "Utility of Pilot wire in angioplasty of tortuous and highly angulated coronary arteries ...

https://en.wikipedia.org/wiki/Ashok_Seth

24x7 24x7 New State of art Cardiac Catheterization Laboratory Coronary Angiography Elective Angioplasty Primary Angioplasty ... Femoro Popliteal Bypass Surgery Embolectomy Procedures Surgery Dermatology Azeezia Laser Clinic Unwanted Hair Removal Mole ...

https://en.wikipedia.org/wiki/Azeezia_Medical_College

... angioplasty, laser MeSH E02.148.050.075.080 - angioplasty, balloon, laser-assisted MeSH E02.148.050.120 - atherectomy MeSH ... angioplasty, balloon MeSH E02.148.050.060.080 - angioplasty, balloon, laser-assisted MeSH E02.148.050.060.100 - angioplasty, ... angioplasty, balloon, laser-assisted MeSH E02.148.102.060.100 - angioplasty, transluminal, percutaneous coronary MeSH E02.148. ... E02.148.050.120.125 - atherectomy, coronary MeSH E02.148.102.060 - angioplasty, balloon MeSH E02.148.102.060.080 - ...

https://en.wikipedia.org/wiki/List_of_MeSH_codes_(E02)

... the former Evangelical Lutheran Church in America Excimer Laser Coronary Angioplasty Enforcement of Limitations on Community ...

https://en.wikipedia.org/wiki/ELCA

... angioplasty cancer diagnosis cancer treatment Dentistry cosmetic dermatology such as scar revision, skin resurfacing, laser ... diode lasers dye lasers excimer lasers fiber lasers gas lasers free electron lasers semiconductor diode lasers Examples of ... Dental laser Endovenous laser therapy Laser-assisted new attachment procedure Laser surgery Light therapy Low level laser ... and laser surgery. Lasers used in medicine include in principle any type of laser, but especially: CO2 lasers, used to cut, ...

https://en.wikipedia.org/wiki/Laser_medicine

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

https://en.wikipedia.org/wiki/List_of_MeSH_codes_(E04)

Junior Research Fellow which led to the award of the MD higher degree in 1989 for research into laser coronary angioplasty. He ... coronary angioplasty and pacemakers into a new National Institute for Cardiovascular Outcomes Research His work with Paolo ...

https://en.wikipedia.org/wiki/Bruce_Keogh

... has high physician reimbursement relative to angioplasty alone. Unlike angioplasty and stents, which push plaque ... There are four types of atherectomy devices: orbital, rotational, laser, and directional. The decision to use which type of ... It is an alternative to angioplasty for the treatment of peripheral artery disease, but the studies that exist are not adequate ... It has also been used to treat coronary artery disease, albeit without evidence of superiority to angioplasty. Atherectomy is ...

https://en.wikipedia.org/wiki/Atherectomy

... culminating in the world's first excimer laser coronary angioplasty (ELCA) performed on a human. On a technologically related ... a CO2 system for Laser Fusion Experiments". "The CO2 laser [was] of interest to the laser fusion effort because of its high ... After its acquisition of JK Lasers in 1982, it became "the third largest laser company in the world". Following a period of ... In 1977, Lumonics developed and introduced the excimer laser, which like the TEA laser emits very short intense pulses of light ...

https://en.wikipedia.org/wiki/Lumonics

Laser sources are coupled into the single scanning fiber and they use red, green, and blue lasers to create color images. To ... 500,000 balloon angioplasty/stent/coronary procedures; 1M coronary catheterizations Recent successes in acute stroke care are ... Lasers in Surgery and Medicine. 2002;30(3):177-183. [PubMed] [17] Seibel EJ, Smithwick QYJ, Brown CM, Reinhall PG. Single-fiber ... Using a single-mode fiber that vibrates in resonance, the SFE scans over tissue highlighted by a focused laser spot. A detector ...

https://en.wikipedia.org/wiki/Scanning_fiber_endoscope

... in the crystal lattice until stimulated by a laser beam passed over the plate surface. The light given off during laser ... Angioplasty, medical interventions of the arterial system, rely heavily on X-ray-sensitive contrast to identify potentially ... Sonoda, M; Takano, M; Miyahara, J; Kato, H (September 1983). "Computed radiography utilizing scanning laser stimulated ...

https://en.wikipedia.org/wiki/X-ray_detector

Reconstructive urology surgery, laser surgery and prostate treatments are its other specializations. On 23rd March'2022, the ... 32,500+ Cardiac procedures performed which includes Angioplasties, Complex Congenital Surgeries, Coronary Bypass Grafting with ...

https://en.wikipedia.org/wiki/Narayana_Multispeciality_Hospital,_Jaipur

Dermatological Laser Clinic, Herzliya Medical Center, Herzeliya, Israel. 32 (6): 642-5. doi:10.1111/j.1365-2230.2007.02469.x. ... all kinds of angioplasty and catheterization; Cardiac Surgery Centre - has a license for open heart surgery, bypass surgery, ...

https://en.wikipedia.org/wiki/Herzliya_Medical_Center

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 ... A common use includes angioplasty. In 1963, Dr. Thomas Fogarty invented and patented the balloon catheter. 1963 Geosynchronous ... 1965 Chemical laser A chemical laser is a laser that obtains its energy from a chemical reaction. Chemical lasers can achieve ... 1960 Gas laser A gas laser is a laser in which an electric current is discharged through a gas to produce light. The first gas ...

https://en.wikipedia.org/wiki/Timeline_of_United_States_inventions_(1946–1991)

Angioplasty.org contains information on current stent research, as well as other issues relating to the circulatory system. ... New advances with micro laser welding have vastly improved the quality of medical devices made with nitinol.[citation needed] ...

https://en.wikipedia.org/wiki/Nitinol_biocompatibility

At times instead of disc removal a Laser discectomy could be used to decompress a nerve root. This method is mainly used for ... Techniques such as angioplasty, stenting, clot retrieval, embolization, and diagnostic angiography are endovascular procedures ...

https://en.wikipedia.org/wiki/Neurosurgery

It features a walk-in Urgent Care Center, Ambulatory Surgery Center, Advanced Endoscopy Center, and Laser Vision Correction ... Comprehensive cardiovascular services, including 24/7 angioplasty services and heart surgery; Comprehensive neurological ...

https://en.wikipedia.org/wiki/SUNY_Downstate_Medical_Center

The CHIVA method is also equivalent to either radio frequency ablation or endovenous laser therapy regarding recurrence and ... On November 28, 2017, Zamboni admitted that balloon venous angioplasty cannot be indiscriminately applied to all patients ... "Effects of Venous Angioplasty on Cerebral Lesions in Multiple Sclerosis: Expanded Analysis of the Brave Dreams Double-Blind, ...

https://en.wikipedia.org/wiki/Paolo_Zamboni

3,982,207 for their invention of the quantum well laser under the title "Quantum Effects in Heterostructure Lasers" after ... Czech photographer The first angioplasty (percutaneous transluminal angioplasty) on a human being, a minimally-invasive ...

https://en.wikipedia.org/wiki/September_1976

Endovenous laser treatment of varicose veins: Placement of thin laser fiber in varicose veins for non-surgical treatment of ... Vascular Balloon angioplasty/stent: Opening of narrow or blocked blood vessels using a balloon, with or without placement of ... "Angioplasty and Vascular Stenting". Radiologyinfo.org. "SIR-RFS Webinar (2/7/2013): Principles of Embolization in Trauma" - via ... The coronary arteries were one of the earliest widely accepted applications of angioplasty and stenting developed by cardiology ...

https://en.wikipedia.org/wiki/Interventional_radiology

... s also deal with equipment, such as handling a C-arm fluoroscope in angioplasty and orthopedics. A ... In addition, technological advances, such as fiber optics, laser and robotic technology, will permit an increasing number of ...

https://en.wikipedia.org/wiki/Surgical_technologist

1993). Laser Doppler, Med-Orion Publishing. ISBN 978-9963-592-53-1 Bernstein E. et al. (1993). Cerebral Revascularisation, Med- ... characterization using digital image processing and its potential in future studies of carotid endarterectomy and angioplasty ...

https://en.wikipedia.org/wiki/Andrew_Nicolaides

Other light-based and laser therapies such as laser wound healing and rejuvenation, or intense pulsed light hair removal do not ... has undergone Phase I clinical trials for the prevention of restenosis of vessels after cardiac angioplasty by ... Goldman L (1990). "Dye Lasers in Medicine". In Duarte FJ; Hillman LM (eds.). Dye Laser Principles. Boston: Academic Press. pp. ... "Centre of laser medicine - Historical Aspects of Photodynamic Therapy Development". Retrieved 2011-08-05. "Innovation (November ...

https://en.wikipedia.org/wiki/Photodynamic_therapy

Laser Doppler imaging by near-infrared digital holography can reveal characteristic blood flow waveforms in the central artery ... either via vascular bypass or angioplasty and stenting. Outcomes following revascularization vary depending on the severity of ... "Transradial retrograde percutaneous transluminal angioplasty with stenting of long segment occlusion of subclavian artery". ...

https://en.wikipedia.org/wiki/Takayasu's_arteritis

... and angioplasty, and tells stories about the emotional impact of these lifesaving advances on his individual patients. In 2019 ... the Leon Goodman Award for excellence in laser research, the Distinguished Scientific Achievement Award of the American Heart ...

https://en.wikipedia.org/wiki/James_S._Forrester_(cardiologist)

Laser and tungsten inert gas (TIG) welds have been made between NiTi tubes and stainless steel tubes . More research is ongoing ... and intracranial angioplasty. A more recent[when?] application of nitinol wire is in female contraception, specifically in ... Laser welding nitinol to itself is a relatively routine process. More recently, strong joints between NiTi wires and stainless ... laser welding". Journal of Intelligent Material Systems and Structures. 24 (8). Fox, Gordon; Hahnlen, Ryan (October 29, 2012 ...

https://en.wikipedia.org/wiki/Nickel_titanium

This technique uses a single-pulse laser beam to generate a photoacoustic signal in tissues and the decay time for the signal ... "Effect of blood viscosity on oxygen transport in residual stenosed artery following angioplasty". Journal of Biomechanical ...

https://en.wikipedia.org/wiki/Hemorheology

If a patient is deemed to be too high-risk to undergo a bypass, he or she may be a candidate for angioplasty or stenting of the ... In neurosurgery, excimer laser assisted non-occlusive anastomosis (ELANA) is a technique use to create a bypass without ...

https://en.wikipedia.org/wiki/Vascular_bypass

Excimer laser angioplasty was used to treat total occluded coronary arteries and instent restenosis lesions with high success ... Acute and follow-up results of laser angioplasty: single center experience.. Autor : Mahanonda, N. Khuanprasert, S. Tresukosol ... Acute and follow-up results of laser angioplasty: single center experience. Journal of the Medical Association of Thailand. ... The initial success rate of ELCA was 86.4 per cent which is comparable to plain balloon angioplasty performed during the same ...

https://imsear.searo.who.int/handle/123456789/38764?locale=es

PTCA percutaneous transluminal coronary angioplasty. PTLA percutaneous transluminal laser angioplasty. PU peptic ulcer ...

https://www.cdc.gov/nchs/nvss/manuals/2020/2a-appendix-2020.htm

Endovascular laser treatment was performed with a 1470 nm diode laser and a 400 µc radial slim™ fiber. Intraoperative ultrasoud ... Conclusions Office-based endovascular laser treatment of groin and popliteal recurrent varicose veins with 1470 nm diode laser ... Endovenous laser treatment of groin and popliteal varicose veins recurrence Phlebology. 2018 Apr;33(3):195-205. doi: 10.1177/ ... In this paper, we propose an endovascular laser treatment that allows reducing the invasiveness and complications in case of ...

https://pubmed.ncbi.nlm.nih.gov/28134021/

Early and late quantitative angiographic results of vein graft lesions treated by excimer laser with adjunctive balloon ... CONCLUSIONS: Excimer laser angioplasty with adjunctive balloon angioplasty can be safely and successfully performed in diseased ... BACKGROUND: Percutaneous excimer laser coronary angioplasty (PELCA) has been approved for treatment of diseased saphenous vein ... should be considered to reduce the risk of late occlusions and restenosis after laser angioplasty of bypass grafts. ...

https://scholars.duke.edu/display/pub717461

Laser angioplasty -- Lasers that blast away plaque *Coronary artery stent -- A tiny coil expanded inside your blocked artery to ... Balloon angioplasty -- A small balloon inflated inside your blocked artery to open it ...

https://www.medicinenet.com/whats_atherosclerosis/article.htm

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 ... 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. ... Keratectomy, Photorefractive, Excimer Laser. E4.416.237.500 E2.594.480.875. E4.540.492 E4.416.480.875. E4.540.825.437.500. ( ...

https://decs.bvs.br/P/mnchg2008.htm

Percutaneous angioplasty versus atherectomy for treatment of symptomatic infra-popliteal arterial disease. Cardiovasc Revasc ... a laser may be useful in making a small hole through which to pass the balloon. Restenosis is a concern with PTCA, particularly ... Some areas of arteriostenosis can be revascularized with percutaneous transluminal coronary angioplasty (PTCA). If the ...

https://www.medscape.com/answers/761556-89731/how-is-pain-managed-in-patients-with-peripheral-vascular-disease-pvd

Treatments include laser therapy, angioplasty, stenting and heart catheterizations. ... Endovenous laser therapy. *Peripheral angioplasty. *Peripheral stenting. *Inferior vena cava filter insertions ...

https://baycare.org/hospitals/morton-plant-north-bay-hospital/services/heart-and-vascular/vascular

Angioplasty. Angioplasty, set of techniques used in reconstructing damaged blood vessels, which may involve surgery, lasers, or ...

http://www.jrank.org/encyclopedia/collection/2/21st-Century-Webster-s-Family-Encyclopedia.html

Coronary angiography is widely used to guide interventions such as balloon angioplasty, atherectomy, laser treatment, stent ... Balloon angioplasty can disrupt an obstruction so that the vessel appears to recover its full diameter, when, in fact, the ... Is any stenosis near a branch point (such that balloon angioplasty of the lesion may obstruct a branch artery)? ... bypass or angioplasty) will not eliminate problems in this portion of the heart. ...

http://emedicine.medscape.com/article/349040

... and interventional cardiologists are experts at treating heart conditions that can be treated with procedures like angioplasty ... Angioplasty. *Laser or diamondback atherectomy. *Stenting of leg arteries *Surgery. Symptoms of PAD ... and interventional cardiologists are experts at treating heart conditions that can be treated with procedures like angioplasty ...

https://www.stbernards.info/services/heart/invasive-interventional-cardiology

... are considered good candidates for treatment with lasers and light therapies, but for acne, treatments with these therapies are ... Balloon pulmonary angioplasty for CTEPH improves heart failure symptoms. March 30, 2018 ... Oxyhemoglobin in the blood absorbs light from lasers at wavelengths of about 595 nm (pulsed dye laser) and 532 nm (KTP laser), ... Spacing laser spots too far apart can result in "foot printing," the appearance of clearance in the areas of the laser pulse, ...

https://www.pm360online.com/rosacea-responds-well-to-laser-ipl-therapies/

Balloon angioplasty (PTCA). *Percutaneous Coronary Intervention (PCI). *Rotational atherectomy. *Orbital atherectomy. *Laser ...

https://icahn.mssm.edu/education/residencies-fellowships/list/msh-interventional-cardiology-fellowship

Opening procedures - treatment of vasospasm or stenosis by angioplasty and stenting, chemical and mechanical thrombolysis in ... Frequency and determinants of postprocedural hemodynamicinstability after carotid angioplasty and stenting. Stroke 1999;30:2086 ... Biliary Endoscopic Laser Lithotripsy (BELL) and percutaneous stone retrieval * Arteriography. * * Renal vascular disease - ...

http://ispub.com/IJA/19/1/11318

... we offer distinct types of angioplasty procedures to remove plaque buildup and improve heart health. Call 631-654-3278 today! ... laser angioplasty is combined with balloon angioplasty for better results.. Balloon Angioplasty. Speaking of balloon ... Angioplasty For the Treatment of Atherosclerosis What Is the Radial Artery Approach for Angioplasty? What Is an Angioplasty? ... Laser Angioplasty. Following an obstruction of plaque buildup in an artery, angioplasty helps dilate the affected artery to ...

https://brookhavenheart.com/3-types-angioplasty-procedures-offered-brookhaven-heart-patchogue-ny/

He has advanced training from Harvard and the Texas Heart Institute in angioplasty, laser and stent therapy for coronary and ... He serves as a national proctor for the techniques of peripheral vascular angioplasty and laser therapy. He has spoken ... She was one of the first physicians to begin using the ultrapulse CO2 laser for treating wrinkles, photodamage, and acne ... He has co-authored articles on laser surgery for tumors of the central nervous system, spinal surgery techniques, spinal and ...

https://www.dmagazine.com/publications/d-magazine/2001/october/the-best-doctors-in-dallas/

Angioplasty is a surgical technique for reopening narrowed or blocked arteries in the heart (coronary arteries) without doing ... Click Here! To Get Affordable ReLeX SMILE Laser Surgery * Les hôpitaux réduisent les prix des chirurgies à cœur ouvert à Delhi! ... Process Before Angioplasty:. You have to ask your doctor if you are allergic to iodine or seafood since angioplasty involves ... 2. Carotid Artery Angioplasty:. In carotid angioplasty, stenting is a minimally invasive procedure in which a very small hollow ...

https://gomedii.com/blogs/english/treatments/angioplasty-balloon-percutaneous-transluminal-angioplasty/

Laser Therapy. A urologist inserts a laser into the urethra via a catheter. The laser heats and destroys prostate tissue, which ... This procedure is similar to the balloon angioplasty used to open up clogged arteries. Using a catheter, the doctor places a ... The procedure is performed in much the same way as laser or microwave therapy. ...

https://www.thehealthpages.com/health-issues/cancer/prostate-cancer/prostate-alert/

Endovenous laser therapy treatment or perforator surgery for varicose veins and venous ulcers ... Open surgical reconstructions and endovascular surgical interventions, such as balloon angioplasty and stenting in all vascular ... Our surgeons use a variety of laser and catheter-based techniques to effectively treat varicose veins. ...

https://healthonecares.com/specialties/vascular-surgery

... use of laser catheter or through gene therapy), (c) brachytherapy (optimum delivery system of gamma or beta radiations), (d) ... angioplasty (removal or compression of the plaque by use of catheter, balloon or stent) and (e) bypass grafting (detouring ...

https://www.igi-global.com/chapter/recent-innovations-in-coronary-stents/225370

Angioplasty and vascular stenting are widely adopted procedures in the cardiology market and have a considerable market share. ... 5.4.2. Transmyocardial laser revascularization. 5.4.3. Heart valve repair. 5.4.4. Arrhythmia treatment. 5.4.5. Aneurysm repair ... 5.1.1. Angioplasty. 5.1.2. Cardiovascular stents. 5.1.3. Cardiovascular catheters. 5.1.4. Cardiac rhythm management. 5.1.5. ... On the basis of surgeries type, the market is classified into coronary artery bypass grafting, transmyocardial laser ...

https://www.researchandmarkets.com/reports/4901016/european-cardiology-market-2019-2025

Carbon monoxide laser angioplasty using contact irradiation.. Arai, T., Nakagawa, M., Kikuchi, K., Mizuno, K., Arakawa, K., ... CLEO 88 Conf Lasers Electro Opt 1988 Tech Dig Ser Vol 7. Publ by IEEE, p. 366, 367 (CLEO 88 Conf Lasers Electro Opt 1988 Tech ...

https://keio.pure.elsevier.com/en/publications/?indexableKeyword=%2Fdk%2Fatira%2Fpure%2Fsustainabledevelopmentgoals%2Faffordable_and_clean_energy&format=&page=1622&ordering=publicationYearThenTitle&descending=true

Blocked Coronary Artery with Balloon Angioplasty and Stent Repair - Medical Animation. Add to my lightbox. Find More Like This ... Other catheter techniques are also being developed for opening narrowed coronary arteries, including laser and mechanical ... Balloon angioplasty involves inserting a catheter with a tiny balloon at the end into a forearm or groin artery. The balloon is ... Doctors may recommend surgery or angioplasty if drugs fail to ease angina or if the risk of heart attack is high. Coronary ...

https://www.doereport.com/displaymonograph.php?MID=6

The C-Code used for NC EMERGE PTCA Dilatation Catheter is C1725 Catheter, Transluminal, Angioplasty, Non-Laser (may include ... Class II Special Controls Guidance Document for Certain Percutaneous Transluminal Coronary Angioplasty (PTCA) Catheters. ...

https://www.bostonscientific.com/en-US/products/catheters--balloon/nc-emerge-balloon-catheter.html

... recommends an applicant for hospital or other institutional privileges have completed a minimum of 8-10 hours of basic laser ... a cardiologist should have coronary artery angioplasty privileges before requesting privileges for use of lasers in angioplasty ... FOR THE USE OF LASERS IN MEDICINE AND SURGERY TRAINING. The American Society for Laser Medicine and Surgery recommends an ... Guidelines for Office-Based Laser Procedures * Standards Of Training For Physicians For The Use Of Lasers In Medicine And ...

https://www.aslms.org/for-professionals/professional-resources/standards-of-practice/standards-of-training-for-physicians-for-the-use-of-lasers-in-medicine-and-surgery

Apollo is the pioneer in Coronary Artery Stenting and LASER angioplasty since 2002. ... The team of the best cardiologists in India has performed over 85,000 angiographies and more than 50,000 coronary angioplasties ... First to apply heart, lung machine-supported Coronary Angioplasty in India.. *Member of various prestigious groups- FRACS - ... Pacemaker Implantation, Coronary Angioplasty/Bypass Surgery, Mitral/Heart Valve Replacement, Invasive Cardiac, Intra - Arterial ...

https://www.vaidam.com/search/lvad/india

Angioplasty alone or drug-coated balloon or laser debulk/drug-coated balloon for in-stent restenosis Eric Ducasse, Bordeaux, ... Laser treatment of reticular and subcuticular veins Kasuo Miyake, Sao Paulo, Brazil 17:04 to 17:12 Evidence of choice of ... MRA calf perfusion before and after angioplasty Gerd Groezinger, Tubingen, Germany 16:00 to 16:08 First experience with a ... Treatment of iliac in-stent restenosis with laser debulking and covered stents Jos van den Berg, Lugano, Switzerland 14:08 to ...

https://www.cxsymposium.com/cx-2016-presentations/

Laser AngioplastyLaser Angioplasty (also known as excimer laser coronary angioplasty) is a technique that can be used to open ... Laser AngioplastyLaser Angioplasty (also known as excimer laser coronary angioplasty) is a technique that can be used to open ... Coronary AngioplastyCoronary Angioplasty (also called percutaneous coronary intervention or PCI) is a procedure that opens up ... Coronary AngioplastyCoronary Angioplasty (also called percutaneous coronary intervention or PCI) is a procedure that opens up ...

https://medmovie.com/library_id/3255/topic/ahaw_0264i/

Russians pioneered laser eye surgery. Moscow opthomologist Svyatoslov Fyodorov made a fortune treating near-sightedness with an ... needless deaths from heart disease occur because hospitals lack the equipment needed to perform bypass surgery and angioplasty ... Although Russia pioneered in some specialized fields of medicine such as laser eye surgery and heart surgery, the countrys ...

https://factsanddetails.com/russia/Education_Health_Transportation_Energy/sub9_6b/entry-5145.html

Endovenous ablation - radiofrequency or laser. *Foam Sclerotherapy. *Microsclerotherapy. *Varicose Veins Surgery. *Angioplasty ... they pioneered the use of lasers in venous surgery and brought Laser Vein Surgery to both the NHS and private medical practice. ... Jacket fibre laser for smaller veins. *All treatments based on The Whiteley Protocol - a research-based protocol to optimise ... Endovenous Laser Ablation (EVLA), Varicose Veins Surgery, Varicose Veins, Painful Legs + 16 more ...

https://www.doctify.com/uk/find/vascular-surgery/bow/specialists

The initial success rate of ELCA was 86.4 per cent which is comparable to plain balloon angioplasty performed during the same period. (who.int)
Early and late quantitative angiographic results of vein graft lesions treated by excimer laser with adjunctive balloon angioplasty. (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)
On occasion, laser angioplasty is combined with balloon angioplasty for better results. (brookhavenheart.com)
Speaking of balloon angioplasty - our procedure addresses clogged arteries using a balloon attached to a catheter. (brookhavenheart.com)
The difference between using a balloon and using a laser is that the balloon is maneuvered to the affected artery, and then inflated to dilate that artery and compact the plaque. (brookhavenheart.com)
On occasion we use angioplasty stenting, combined with balloon angioplasty, to treat the affected artery. (brookhavenheart.com)
Many times a balloon can be placed across the a narrow area and expanded to make it opened again (angioplasty). (surgspecswfl.com)
Some of the treatments used include laser, balloon angioplasty and stenting. (surgspecswfl.com)
Angioplasty involves temporarily inserting and expanding a tiny balloon at the site of your blockage to help widen a narrowed artery. (exonmed.co)
In most cases, balloon angioplasty is performed in combination with the stenting procedure. (exonmed.co)
Angioplasty that is also called percutaneous coronary interventions or balloon angioplasty is an invasive medical procedure to dilate heart arteries. (exonmed.co)
Angioplasty applies a tiny balloon to widen the artery. (exonmed.co)
Angioplasty - A balloon is inflated to open the vessel. (mednhealth.com)
Angioplasty and stent placement - After the balloon is used, a stent (mesh frame) will be placed in the vessel to support the walls. (mednhealth.com)
When laser angioplasty is performed in combination with balloon angioplasty it is called laser-assisted balloon angioplasty (ANGIOPLASTY, BALLOON, LASER-ASSISTED). (bvsalud.org)
More than 7 million medical devices have been produced at the site this year, including diagnostic and therapeutic technologies such as biopsy forceps, balloon angioplasty products and laser fibers. (amcham.com.my)
A Balloon Angioplasty is a procedure used to widen blocked or narrowed blood vessels to allow a greater blood flow to go through to the heart. (tourmyindia.com)
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)
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)
What is balloon angioplasty? (indiahealthtour.com)
Dr Viveka Kumar is the best Cardiologist in Delhi with experience in angioplasty, pacemaker implant, angiography & balloon valvotomy. (steeldirectory.net)

Definition excerpted from FDA Guidance document titled, Class II Special Controls Guidance Document for Certain Percutaneous Transluminal Coronary Angioplasty (PTCA) Catheters. (bostonscientific.com)
The main treatments for coronary artery disease (CAD) are medical treatment (primarily with drugs), coronary artery bypass grafting (CABG) and percutaneous transluminal coronary angioplasty (PTCA). (inahta.org)
Percutaneous transluminal coronary angioplasty (PTCA), or angioplasty, is an invasive procedure performed to reduce or eliminate blockages in coronary arteries. (indiahealthtour.com)

At St. Bernards, our invasive and interventional cardiologists are experts at treating heart conditions that can be treated with procedures like angioplasty and stenting. (stbernards.info)
Opening procedures - treatment of vasospasm or stenosis by angioplasty and stenting, chemical and mechanical thrombolysis in stroke. (ispub.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)
Angioplasty and vascular stenting are widely adopted procedures in the cardiology market and have a considerable market share. (researchandmarkets.com)
Apollo is the pioneer in Coronary Artery Stenting and LASER angioplasty since 2002. (vaidam.com)
Our surgeons have been instrumental in the technological advancements made in surgical procedures-from minimally invasive techniques such as laparoscopic surgery to vascular stenting and angioplasty. (oregonsurgical.com)

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)
Angioplasty is used to open narrowed arteries and increase oxygen-rich blood flow to muscle and tissue. (healthlinkbc.ca)
Angioplasty can also be done for the femoral, popliteal, and tibial arteries. (healthlinkbc.ca)
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)
Atherectomy and angioplasty are methods that can be used to open arteries without surgery. (mednhealth.com)
Although angioplasty is done in other blood vessels elsewhere in the body, percutaneous coronary intervention (PCI) refers to angioplasty in the coronary arteries to permit more blood flow into the heart. (touro.com)
An angioplasty is a procedure that restores normal blood flow to the heart muscle in someone that has blocked arteries. (tourmyindia.com)
Interventional cardiologists perform angioplasty, which opens narrowed arteries. (indiahealthtour.com)

Atherectomy - The plaque is removed by using a rotating shaver or laser. (mednhealth.com)
Atherectomy or angioplasty of noncoronary vessel - How Long Will It Take? (mednhealth.com)
Atherectomy or angioplasty of noncoronary vessel - How Much Will It Hurt? (mednhealth.com)
A burgeoning variety of new recanalization technologies are, or have been, under investigation, such as laser angioplasty, thermal angioplasty, atherectomy and intravascular stents. (inahta.org)
In an atherectomy, Dr. Ellichman removes plaque from your artery with a specialized rotating tool or laser. (ellichmanvascular.com)

Angiography, Angioplasty & Cardiovascular Interventional Procedures. (shreesaibabaheartinstitute.com)

Often, a stent is implanted after angioplasty to keep the artery open and prevent restenosis (regrowth of plaque). (indiahealthtour.com)

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. (bvsalud.org)

However, an experienced heart surgeon may also perform angioplasty, a less invasive procedure. (brookhavenheart.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 American Society for Laser Medicine and Surgery recommends an applicant for hospital or other institutional privileges be familiar with the pertinent literature and have completed a basic training program devoted to laser physics, tissue interaction, safety, surgical techniques, and pre- and post-operative care. (aslms.org)
For example, a cardiologist should have coronary artery angioplasty privileges before requesting privileges for use of lasers in angioplasty procedures and, likewise, gynecologists requesting privileges for use of lasers in laparoscopic delivery for surgery should already have privileges and experience in operative laparoscopy. (aslms.org)
Lasers in Surgery and Medicine (LSM) , the Society's official journal, is the most prestigious and widely circulated peer reviewed scientific journal dedicated to basic and applied aspects of laser therapy and diagnosis. (aslms.org)
Transmyocardial Revascularization (TMR) is a procedure used to relieve severe angina or chest pain in very ill patients who aren't candidates for bypass surgery or angioplasty. (medmovie.com)
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)

Peripheral artery angioplasty (say "puh-RIFF-er-rull AR-ter-ree ANN-jee-oh-plass-tee") is a procedure to treat peripheral arterial disease of the legs. (healthlinkbc.ca)
Another type of procedure is a coronary angioplasty also known as a coronary stent. (tourmyindia.com)
Angioplasty patients often are given aspirin at least 2 hours before the procedure. (indiahealthtour.com)
Heparin has been a traditional adjunctive medical therapy for patients undergoing coronary angioplasty and has been shown to decrease complications after the procedure. (medscape.com)
Each year, approximately half a million Americans receive a stent to hold open an artery in their heart that has been unclogged during a procedure called angioplasty. (medlineplus.gov)

Following an obstruction of plaque buildup in an artery, angioplasty helps dilate the affected artery to better restore blood flow. (brookhavenheart.com)
With laser angioplasty, a thin, flexible catheter is inserted directly into the coronary artery . (brookhavenheart.com)
From there, the laser emits a pulsating beam to vaporize the plaque and open the artery once more. (brookhavenheart.com)
In this technique, a laser is used to vaporize the blockage in the artery. (gomedii.com)
On the basis of surgeries type, the market is classified into coronary artery bypass grafting, transmyocardial laser revascularization, heart valve repair, arrhythmia treatment, aneurysm repair, and heart transplant. (researchandmarkets.com)
If your doctor finds a narrowed artery, he or she may do an angioplasty. (healthlinkbc.ca)
These images show angioplasty for the iliac artery. (healthlinkbc.ca)
Angioplasty can widen a narrowed part of an artery. (healthlinkbc.ca)
In an angioplasty, Dr. Ellichman places a slim tube (catheter) into your artery. (ellichmanvascular.com)

The catheter then guides the laser on its tip to the blockage. (brookhavenheart.com)
Our surgeons use a variety of laser and catheter-based techniques to effectively treat varicose veins. (healthonecares.com)
A technique utilizing a laser coupled to a catheter which is used in the dilatation of occluded blood vessels. (bvsalud.org)

Physicians requiring privileges to use lasers should first meet all institutional standards with respect to Board certification, specialty training, ethical character, good standing and judgment and have interventional privileges in the specialty before requesting laser privileges. (aslms.org)

The extent of laser ablation remains limited by the diameter and effectiveness of the catheters. (duke.edu)

At Brookhaven Heart, we offer a few types of angioplasty procedures , all designed to help your condition! (brookhavenheart.com)
Our angioplasty procedures are designed to make your life easier! (brookhavenheart.com)
Whether you are looking for a clinician or would like to learn about how lasers and energy-based devices are used in common procedures or specialty fields, this area is for you! (aslms.org)

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)

Their centers in various cities like New Delhi, Mumbai, Chandigarh, Gurgaon and Noida are visited by national and international patients to receive world-class fertility treatments such as IVF, surrogacy, egg donation, laser hatching among others. (placidway.com)

In this paper, we propose an endovascular laser treatment that allows reducing the invasiveness and complications in case of SFJ and SPJ reflux after ligation and stripping of the great and small saphenous vein. (nih.gov)

To assess immediate and long-term results of patients treated with excimer laser, we analyzed demographic information and the immediate results of 44 patients who underwent ELCA. (who.int)
BACKGROUND: Percutaneous excimer laser coronary angioplasty (PELCA) has been approved for treatment of diseased saphenous vein bypass grafts. (duke.edu)
One form of the latter approach uses an EXCIMER LASER which creates microscopically precise cuts without thermal injury. (bvsalud.org)

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)

Plaque can be cut out, ablated with a laser, or bored out using a surgical drill bit. (indiahealthtour.com)

The laser may stimulate new blood vessels to grow, called angiogenesis or it may destroy nerve fibers to the heart, making patients unable to feel their chest pain. (medmovie.com)
Sometimes ischemia or severely reduced blood flow in heart muscle needs to be assessed by angioplasty. (exonmed.co)

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

It is recommended that the initial program include clinical applications of various wavelengths in the particular specialty and hands-on practical sessions with lasers and their appropriate surgical or therapeutic delivery systems. (aslms.org)

Moreover, People that suffer from chest pain or blockages are often candidates for angioplasty. (exonmed.co)

The laser device which the surgeon places on the outside of the heart creates 20 to 40 channels throught the heart which are approximately 1 mm in diameter (about the size of a pin head) from the outside of the heart into the heart's pumping chamber. (medmovie.com)
After a coronary angioplasty is performed, the stent is put into the heart to ensure the passageway that has a high likelihood of clogging again. (tourmyindia.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)

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

Conclusions Office-based endovascular laser treatment of groin and popliteal recurrent varicose veins with 1470 nm diode laser and radial-slim fiber is a safe and highly effective option, with a high success rate in the early post-operative period. (nih.gov)

Methods 8 SFJ and 1 SPJ stumps were treated by endovascular laser treatment in out-patient clinic. (nih.gov)
Endovascular laser treatment was performed with a 1470 nm diode laser and a 400 µc radial slim™ fiber. (nih.gov)

Anatomy21

Organisms3

Diseases55

Chemicals and Drugs27

Analytical, Diagnostic and Therapeutic Techniques and Equipment125

Phenomena and Processes18

Disciplines and Occupations3

Technology, Industry, Agriculture4

Information Science6

Health Care44

Pacemaker lead extraction with the laser sheath: results of the pacing lead extraction with the excimer sheath (PLEXES) trial. (1/33)

Laser angioplasty of restenosed coronary stents: results of a multicenter surveillance trial. The Laser Angioplasty of Restenosed Stents (LARS) Investigators. (2/33)

Effect of plaque debulking and stenting on short- and long-term outcomes after revascularization of chronic total occlusions. (3/33)

Comparison of debulking followed by stenting versus stenting alone for saphenous vein graft aortoostial lesions: immediate and one-year clinical outcomes. (4/33)

Photoangioplasty with local motexafin lutetium delivery reduces macrophages in a rabbit post-balloon injury model. (5/33)

Cerebral blood flow restoration and reperfusion injury after ultraviolet laser-facilitated middle cerebral artery recanalization in rat thrombotic stroke. (6/33)

Endovascular surgery for peripheral arterial occlusive disease. A critical review. (7/33)

Meta-analysis of randomized trials of percutaneous transluminal coronary angioplasty versus atherectomy, cutting balloon atherotomy, or laser angioplasty. (8/33)

Angioplasty, Balloon

Angioplasty, Balloon, Coronary

Lasers

Angioplasty

Angioplasty, Laser

Stents

Recurrence

Lasers, Solid-State

Constriction, Pathologic

Coronary Disease

Coronary Angiography

Treatment Outcome

Laser Coagulation

Follow-Up Studies

Laser Therapy, Low-Level

Myocardial Infarction

Arterial Occlusive Diseases

Iliac Artery

Vascular Patency

Atherectomy, Coronary

Coronary Vessels

Femoral Artery

Time Factors

Graft Occlusion, Vascular

Lasers, Excimer

Popliteal Artery

Coronary Artery Bypass

Angiography

Angina Pectoris

Thrombolytic Therapy

Prospective Studies

Carotid Stenosis

Tunica Intima

Ischemia

Aortic Coarctation

Retreatment

Renal Artery Obstruction

Retrospective Studies

Lasers, Dye

Atherectomy

Catheterization

Laser Scanning Cytometry

Coronary Restenosis

Intermittent Claudication

Coronary Circulation

Leg

Platelet Aggregation Inhibitors

Keratomileusis, Laser In Situ

Ultrasonography, Interventional

Myocardial Revascularization

Postoperative Complications

Endarterectomy, Carotid

Beta Particles

Hirudin Therapy

Coronary Thrombosis

Angina, Unstable

Intracranial Arteriosclerosis

Reoperation

Ultrasonography, Doppler, Duplex

Hyperplasia

Arteriosclerosis

Peripheral Vascular Diseases

Limb Salvage

Saphenous Vein

Equipment Design

Myocardial Reperfusion

Fibrinolytic Agents

Hypertension, Renovascular

Cardiac Catheterization

Immunoglobulin Fab Fragments

Amputation

Coronary Artery Disease

Electrocardiography

Arteriovenous Shunt, Surgical

Risk Factors

Treatment Failure

Lower Extremity

Feasibility Studies

Coronary Stenosis

Heparin