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)

TY - JOUR. T1 - Solid-state, pulsed-wave, mid-infrared coronary laser angioplasty in de novo versus restenosis lesions. T2 - Observations from a multicenter study. AU - Topaz, O.. AU - McIvor, M.. AU - De Marchena, Eduardo. PY - 1995/10/1. Y1 - 1995/10/1. N2 - The following is a study of the response of de novo versus restenosis coronary lesions to pulsed-wave, mid-infrared (holmium:YAG) laser assisted angioplasty. De novo lesions contain thrombi, cholesterol, and fibrosis, whereas restenotic lesions are composed of smooth muscle cells corresponding to injury caused by preceding balloon inflations. It is not known whether the different composition affects results of treatment by laser. In a clinical multicenter study, a mid-infrared, solid-state, pulsed-wave laser (holmium:YAG, 2.1 μm wavelength, 250-600 mJ/pulse, 5 Hz) was applied for revascularization of de novo and restenosis coronary lesions. Analysis of data was undertaken to document laser success, complications, and restenosis rate and ...
Abstract. Laser angioplasty has been reported as a debulking tool in highly calcified stenosis and in chronic total occlusions followed by a conventional balloon angioplasty/stenting. This systematic review includes one randomized controlled trial and two case series reporting on totally 444 patients. Due to limitation in study designs, one RCT with per randomization and per protocol analysis and two case series without controls the evidence of effectiveness and safety is low. An inclusion in the reimbursement catalogue of Austrian hospitals is currently not recommended. ...
A fiber-optic waveguide, used for ablating lesions in blood vessels, is mounted within and guided by a catheter having multiple lumens extending therethrough and parallel to each other. The waveguide fits within at least one lumen and a guidewire, previously inserted in a blood vessel, extends through another lumen. The distal end of the waveguide can have a short section of larger diameter fiber fused to it to cause a laser beam transmitted through the fiber to expand as it emerges from the waveguide to provide a larger ablation area. The waveguide may also be connected to an energy source by means of an energy coupler.
Laser atherectomy might decrease procedural complications during percutaneous coronary intervention (PCI) of degenerated saphenous vein grafts (SVGs) in case of unstable or thrombotic lesions because of its ability to debulk and vaporize thrombus. We aimed at prospectively evaluating the safety and efficacy of excimer laser coronary angioplasty (ELCA) as a primary treatment strategy in consecutively unstable patients undergoing PCI of degenerated SVG lesions. Seventy-one consecutive patients with non-ST elevation acute coronary syndrome (mean age 69 ± 10 years, 66 men [89%]) undergoing PCI of degenerated SVG were enrolled in a prospective case-control registry, using 2 different distal protection devices (DPDs; FilterWire EZ [Boston Scientific, Natick, Massachusetts; n = 24] and SpiderRX [Ev3, Plymouth, Minnesota; n = 23]) or ELCA (n = 24 ...
To help elucidate the mechanism of excimer laser coronary angioplasty (ELCA), intravascular ultrasound (IVUS) imaging was performed in 19 of 29 patients who were treated with ELCA. The results were compared with a non-randomized control group of 18 p
From February to August 1997, 64 patients were enrolled in a study of intracoronary gamma radiation for in-stent restenosis. In the present study, we analyzed 37 lesions (31 native coronary and 6 vein graft) in 36 patients (age, 62±10 years; 24 men) previously treated with Palmaz-Schatz stents (Cordis). Reasons for exclusion were restenting of the lesions (n=13), no delayed (n=6) or inadequate IVUS (n=1), in-stent tissue ,75% of stent cross-sectional area (CSA; n=2), restenosis localized to stent margin(s) (n=1), or presence of non-Palmaz-Schatz stents (n=5). (One patient had 2 lesions; per protocol, only 1 was enrolled in the radiation trial.) There were 65 stents (1.8 per lesion), implanted 9.6±8.3 months previously. Fifteen patients (40%) had prior in-stent restenosis; the last episode was 5.5±3.3 months previously.. Primary treatment strategy was determined by the operator: PTCA (n=8), excimer laser coronary angioplasty (ELCA; Spectranetics; n=12) + adjunct PTCA, or rotational atherectomy ...
Angina Treatments include drugs and procedures that are used to relieve the chest pain or discomfort associated with angina.. Drugs used to treat angina can affect the blood supply to the heart muscle or the hearts demand for oxygen or both. Drugs that affect the blood supply are coronary vasodilators. They cause blood vessels to relax allowing more oxygen and nutrients reach the heart muscle. Nitroglycerin is the drug most often used. The hearts demand for oxygen also can be modified with drugs that reduce blood pressure. This reduces the hearts workload and need for oxygen. Drugs that slow the heart rate have a similar effect. Drugs called beta-blockers and calcium antagonists are used for these effects. There are many different beta-blockers and calcium antagonists, and the specific ones used are selected depending on the individual characteristics of each patient.. Procedures that are used to treat angina include: coronary angioplasty (PTCA), laser angioplasty, and atherectomy. These ...
An absorption characteristic and a thermal relaxation time of a target biomedical tissue is an important parameter for development of low-invasive treatment that considers of interaction between biomedical tissue and laser. Laser irradiations with a wavelength corresponding to the absorption characteristics of tissue enable selective treatment. Furthermore, the thermal effect to tissue can be controlled at the laser irradiation time which depends on the laser pulse width and reception rate. A free electron laser (FEL) can continuously vary the wavelength in the mid-infrared region, has a unique pulse structure; the structure at the Institute of the Free Electron Laser (iFEL) consist of train of macropulses with a 15 &mgr;s pulse width, and each macropulse contained a train of 300-400 ultrashort micropulse with a 5 ps pulse width. In a previous report, we have proposed a novel laser treatment such as soft tissue cutting, dental treatment and laser angioplasty using the tenability of the FEL. To ...
Biscione, C., Mariano, E., Sergi, D., Tarsia, G., Viceconte, N., Bernardo, V., et al. (2012). Large coronary aneurysm following laser angioplasty of the left anterior descending coronary artery. JOURNAL OF CARDIOVASCULAR MEDICINE, 13(5), 334-335 ...
Learn the symptoms of wet age-related macular degeneration, an eye condition that can give you a blind spot in the center of your field of vision.
Endo-venous laser therapy is the method of treating varicose veins without performing surgery. EVLA is used to treat varicose veins using laser energy. It is minimally invasive ultrasound-guided technique that is used to eliminate varicose veins. The therapy is safe and effective in medical procedures such as eye surgery, dermatology.. Some of the Top companies Influencing in this Market are: AngioDynamics, Syneron, Dornier, Alma, Alna-Medicalsystem, LSO, WONTECH, intros, Energist.. Get Sample Copy of this report @: www.a2zmarketresearch.com/sample?reportId=71345. This report provides a detailed and analytical look at the various companies that are working to achieve a high market share in the global Endovenous Laser Therapy market. Data is provided for the top and fastest growing segments. This report implements a balanced mix of primary and secondary research methodologies for analysis. Markets are categorized according to key criteria. To this end, the report includes a section dedicated to ...
Impact Analysis of Covid-19The complete version of the Report will include the impact of the COVID-19, and anticipated change on the future outlook of the industry, by taking into the account the political, economic, social, and technological parameters.Endovenous laser therapy (ELT) is majorly used to close or shri...
The biological effects of excimer lasers and safety associated with their use were discussed. Excimer lasers operate in the 193 to 351 nanometer (nm) wavelength range producing short pulses of high energy ultraviolet (UV) radiation. They have been used to ablate tissues and nonbiological material to a small depth. As excimer lasers produce radiation in wavelengths where mutagenic and carcinogenic
Angioplasty is a type of Percutaneous Intervention but the two terms are often used to talk about the same procedure. Angioplasty is much like an angiogram procedure.
Expectations with angioplasty often include relief of chest pain. This eMedTV article discusses the expected results of angioplasty and explains that arteries may not remain unblocked after the procedure.
Angioplasty is often recommended for people who have blocked arteries. Find out if angioplasty is for you in this article from Discovery Health.
Featured Angioplasty News. Find breaking news, commentary, and archival information about Angioplasty From The tribunedigital-mcall (Page 4 of 5)
Every day, physicians and medical facilities around the world choose Ra Medical Systems excimer lasers to offer the highest caliber treatments to their patients.
A heart disease expert, Dr. Ravinder Singh Rao is one of the leading Heart Specialist for Angioplasty Procedure in Jaipur, Rajasthan, India who has saved countless lives. Consult today.
Hello everyone, I just came back after an angioplasty with a stens implants. No heart attack or muscle damage. Just Chest pain. I am 54, been doing weights for many years, I cant live without working out. I was wondering if anyone has the same experience and how they manage to came back to the gym. Thanks in advance
న్యూఢిల్లీ: అనారోగ్యంతో ఆస‍్పత్రిలో చేరిన టిమిండియా మాజీ కెప్టెన్‌ కపిల్‌ దేవ్‌ కోలుకుని ఇవాళ డిశ్చార్జ్‌ అయ్యారు. ఇటీవల కపిల్‌కు గుండెపోటు రావడంతో కుటుంబ సభ్యులు న్యూఢిల్లీలోని ఓ ప్రవైటు ఆస్పిత్రిలో చేర్పించగా అదే రోజు రాత్రి వైద్యులు ఆయనకు ఆపరేషన్‌ చేసిన విషయం తెలిసిందే. ప్రస్తుతం ఆయన ఆరోగ్యం నిలకడగా ఉండటంతో వైద్యులు ఆయనను డిశ్చార్జ్‌ చేసినట్లు మాజీ క్రికెటర్‌
Varicose veins are large, rope-like veins which are often one-quarter inch or larger in diameter.. Varicose veins occur when veins are not properly returning blood from the lower leg to the heart. All veins have valves that open to allow the flow of blood to the heart and close to prevent backflow (otherwise known as reflux) of blood to the foot. When valves fail to function properly, blood leaks through and flows down the leg in the wrong direction. The blood overfills and distends the superficial veins under the skin, resulting in the bulging seen in varicose veins.. Approximately half of the population has some form of venous disease, and varicose veins affect about one out of two people age 50 and older, and 15-25% of all adults.. With endovenous laser therapy, no surgery is required, and the entire procedure can be performed in less than one hour in our office. During the procedure, you are awake and your leg is anesthetized. A thin laser fiber is inserted into the great saphenous vein ...
Endovenous laser therapy is one of the most popular treatments for varicose veins. This minimally-invasive treatment uses laser energy to cause the problematic vein to collapse. The laser is a beam of light that turns to heat inside the vein. Due to the high concentration and narrow focus of light, the laser is able to target the specific area with maximum precision. Lasers have been used for medical treatments for years. In the hands of our highly qualified specialist, laser treatment offers much less risk than surgery.. The process involves inserting a thin fiber into the damaged vein. This only requires a tiny entry point, no incision. The laser light is emitted through the fiber while it is drawn through the vein. The energy is delivered to affect the vein walls so it collapses and seals shut. These veins are superficial veins and handle less than five percent of your bodys blood, which is automatically redirected to healthy veins.. The treatment does not require general anesthesia. A local ...
Atherectomy led to better postprocedural luminal dimensions but was similar to angioplasty for 6-month outcomes in left anterior descending coronary arteries. Coronary atherectomy, endoluminal stenting, and laser angioplasty are alternative interventions to balloon angioplasty (PTCA) for the percutaneous revascularization of obstructive CAD. They were developed because of the persistent unacceptably high restenosis rate (30% to 50%) associated with PTCA. The Coronary Angioplasty versus Excisional Atherectomy Trial (CAVEAT) by Topol and colleagues and the Canadian Coronary Atherectomy Trial (CCAT) by Adelman and colleagues are important because they are the first randomized trials to compare PTCA with an alternative intervention device. In fact, only 2 other randomized trials with PTCA have been reported: the Angioplasty Compared to Medicine (ACME) trial in patients with single-vessel disease and the Randomized Intervention Treatment of Angina (RITA) trial comparing PTCA with bypass graft ...
PURPOSE: To present the immediate and short-term results of our first 60 endovenous laser (EVL) ablation procedures. MATERIALS AND METHODS: Between July 2005 and December 2006, 60 EVL ablations were performed in 36 symptomatic patients (26 females, 1
TY - JOUR. T1 - Deposition of nonlinear optical films of potassium titanyl phosphate (KTiOPO4) by pulsed excimer laser ablation) by Pulsed Excimer Laser Ablation. AU - Xiong, Fulin. AU - Hagerman, M.. AU - Zhou, H.. AU - Kozhevnikov, V.. AU - Wong, G. K.. AU - Poeppelmeier, Kenneth. AU - Ketterson, John B. AU - Chang, R P H. PY - 1994/1/1. Y1 - 1994/1/1. N2 - Nonlinear optical films of potassium titanyl phosphate (KTiOP04, or KTP) have been, for the first time, fabricated by pulsed excimer laser deposition on several substrates such as sapphire, Si(100) crystals, and fused quartz slides. The properties of the deposited KTP films, such as the chemical stoichiometry, crystallinity, effective index of refraction, and Raman response, have been extensively characterized. All of the results match the values of KTP crystals. The nonlinear optical property of the second harmonic generation of the films has been evaluated, showing a highefficiency comparable to a bulk value of KTP crystals. It is ...
A rare gas-halogen excimer laser in which the laser gases are exposed virtually only to metal and ceramic, thereby reducing contamination of the gases and optics. In one preferred embodiment magnetic fluid seals (56) are used to isolate the bearings (58) supporting the shaft (46) upon which the tangential fan (44) rotates so that the lubricated bearings do not contaminate the laser gases. The fan (44) uses magnetic coupling (70, 76) so that an isolating enclosure may be placed over the seal to prevent the leakage of gases into the environment should the seal fail. An excimer laser that is therefore both safe enough to be used in medical and industrial applications as well as reliable may be fabricated.
[124 Pages Report] Check for Discount on Global Cerebral Balloon Angioplasty & Stenting Systems Market Report 2020 by Key Players, Types, Applications, Countries, Market Size, Forecast to 2026 (Based on 2020 COVID-19 Worldwide Spread) report by Maia Research. The Cerebral Balloon Angioplasty & Stenting Systems market is expected to...
[96 Pages Report] Check for Discount on United States Laser Atherectomy Devices Market Report 2017 report by QYResearch Group. In this report, the United States Laser Atherectomy Devices market...
Step-by-Step Instructions for Angioplasty Treatment of CCSVI as Performed by Dr. Tariq Sinans Team in Kuwait.... I found it by chance: Step-by-Step Instructions for Angioplasty Treatment of CCSVI as Performed by Dr. Tariq Sinans Team These notes were dictated to ...
Infections that occur after an angioplasty are uncommon. This part of the eMedTV Web site describes how the use of sterile equipment reduces the risk of infections following angioplasty. If a patient does develop an infection, it is usually minor.
A new study of more than 500,000 cardiac patients who underwent recent cardiac stent or angioplasty procedures in the United States has found that up to 15 percent were either unnecessary or
The Coalition for Community Schools is an alliance of national, state and local organizations in education K-16, youth development, community planning and development, family support, health and...
Hi, Please help me to code this report, my physician has attempted angioplasty it was unsucccesful so i havent coded it.But he is telling that he tried for...
excimer, zdravotnícke centrum, Očná ambulancia, Očná optika, Excimer laserove pracovisko, Gastroenterologická ambulancia, Urologická ambulancia
Posted by Sheller on April 13, 2011 at 08:51:25:. In Reply to: Snails posted by Merry on April 12, 2011 at 20:44:46:. Great shots Merry. Not many would even notice those little guys. I especially like the shots of the californica. Thanks for sharing. Regards, Sheller ...
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Is swelling normal after closing veins with endovenous laser ablation? - I had swelling in my left foot and my doctor confirmed that the valves in two of my veins were not working properly. I had these veins closed with endovenous laser ablation, but four weeks later I still have swelling in my foot that doesnt go away. Is this normal?
Endovenous Laser Treatment is quickly becoming the gold-standard in the treatment of varicose veins. Endovenous Laser Treatment uses laser energy, which is simply a highly concentrated beam of light. Medical lasers work by delivering this light energy to the targeted tissue with extreme precision, so as not to affect the surrounding tissue.. In endovenous laser treatment, a thin fiber is inserted into the damaged vein through a very small entry point in the skin. A laser light is emitted through the fiber, as the fiber is pulled back through the vein, it delivers just the right amount of energy. The targeted tissue reacts with the light energy, causing the vein to close and seal shut. The veins that are closed are superficial veins that handle less than five percent of the bodys blood flow. The blood is automatically routed to other, healthy veins.. Some patients may experience temporary soreness or some slight swelling, which can be treated effectively with over-the-counter, non-aspirin pain ...
Varicose Vein Endovenous Laser Treatment Pro-V. A new approach to varicose vein treatment. Varicose veins affect half of people age 50 and older and 15-20% of all adults worldwide. They are larger than spider veins, typically 3 mm or more in diameter, and are deeper than spider veins. Contributing factors of venous insufficiency are heredity, age, obesity, prolonged standing and pregnancy. If you are suffering from varicose veins-heavy, bulging, ropey veins-treatment with the Varicose Vein Pro-V laser is the optimal solution. The Varicose Vein Pro-V treatment is a safe and effective solution for treating venous insufficiency, often the cause of varicose veins, in a fast comfortable procedure. If you are considering treatment, eliminating varicose veins is easy with Pro-V.. The Varicose Vein Pro-v treatment is done with an infrared laser that is FDA cleared for endovenous laser treatment of varicose veins. The Varicose Vein Pro-v treatment is a safe and effective solution for treating venous ...
Welcome to the Vein-Treatment.com Local Pages. Here you will find local information about Endovenous Laser Ablation in Lewiston, ID and other similar resourses that may be of interest to you. In addition to a number of relevant services we can help you with online, we have compiled a list of businesses and services around Lewiston, including Vascular Specialists, Hospitals, and Health Clinics that should help with your search. Before you look through our local resources, please browse our site. You may just find all you need online!
Welcome to the Vein-Treatment.com Local Pages. Here you will find local information about Endovenous Laser Ablation in Southbridge, MA and other similar resourses that may be of interest to you. In addition to a number of relevant services we can help you with online, we have compiled a list of businesses and services around Southbridge, including Vascular Specialists, Hospitals, and Health Clinics that should help with your search. Before you look through our local resources, please browse our site. You may just find all you need online!
Endovenous laser treatment: The objective of this study is to analyze the results of the first 400 cases treated with Endovenous Laser Ablation
Having performed more than 15000+ cases, Dr Padaria is one of the Best Varicose Veins Surgeons in Mumbai, India. Dr. Padaria pioneered the technique of Endovenous Laser Treatment for Varicose Veins in India in January 2003.
Find Vascular Surgeons that treat Endovenous Laser Treatment of Varicose Veins, See Reviews and Book Online Instantly. Its free! All appointment times are guaranteed by our dentists and doctors.
Endovenous laser treatment (ELT) is a minimally invasive ultrasound-guided technique used for treating varicose veins using laser energy commonly performed by a phlebologist, interventional radiologist or vascular surgeon. Endovenous laser treatment treats varicose veins using an optical fiber that is inserted into the vein to be treated, and laser light, normally in the infrared portion of the spectrum, shines into the interior of the vein. This causes the vein to contract, and the optical fiber is slowly withdrawn. Some minor complications can occur, including thrombophlebitis, pain, hematoma, edema and infection, which can lead to cellulitis. EVLT has the same meaning as ELT, but it is a trademark name owned by Diomed and used as the name for their 910 nm laser treatment unit for ELT. The 810 nm laser is the original laser fiber wavelength as pioneered by Dr. Robert Min of New York, USA. Subsequently, various other fibers with different wavelengths have become available. The varying ...
As the treatment of varicose veins has progressed , so has the science involved and now patients can opt for laser treatment that uses a more sophisticated radial fibre that emits the laser light in an arc around the end of the fibre rather than in a thin beam. Evidence has suggested that the use of these radial fibres aids and quickens recovery - although both methods are just as successful as each other.. Radial fibre endovenous laser ablation (EVLA) and the more standard non radial variety are both highly effective in the treatment of varicose veins, although we do find that patients may feel they want to choose the radial fibre option for greater piece of mind.. A duplex ultrasound is used to guide the laser treatment that damages the faulty vein wall making it impossible for the blood to flow through it. This stops the bulging and the blood is diverted to the healthy, working veins in the leg.. The ELVeS™ and EVLT™ are varicose vein treatments that are quick, minimally invasive ...
Excimer: Ablation on Human Hair The unparalleled precision of the excimer laser makes it uniquely suited to the task of refractive corneal surgery. Each pulse of the laser removes 0.25 microns of tissue. Think of it as slicing 1/200 of a human hair, 1/28 of a red blood cell, or 1/39 millionth of an inch in 4 billionths of a second. This allows the surgeon to literally sculpt the cornea, gently and precisely, into a more desirable shape that allows rays of light to focus properly on the retina.. Myopic Correction. As explained previously, patients with nearsightedness have corneas that are too steep for the length of their eyes. The excimer laser is used to flatten the cornea so that the light rays that pass through it come to a point of focus on the retina, rather than in front of it.. Hyperopic Correction. Patients with hyperopia have corneas that are too flat for the length of their eye. The excimer laser is used to steepen the cornea so that light rays are focused on the retina, rather than ...
Laser Varicose Vein Treatment FDA approved will help you safely & immediately make your spider veins disappear & return your skin to its natural,even tone.
Dr. Amanda Lloyd offers effective, minimally-invasive treatment for varicose veins at her Encinitas office. Call (760) 642-6674 to schedule a consultation
Excimer laser sources have already been used with success for a number of novel material processing procedures. Most promising of these deal effectively with challenging materials for which little can be done with ordinary tools in order to materialize their potential. In this presentation, attention is focused on excimer irradiation processing of high grade sintered alumina. On one hand, it is shown how effective and unique can be an excimer beam in transforming the surface of this heavily used material. Under specific irradiation conditions, surface melting of sintered alumina is obtained. The resulting material is then studied by low-angle X-ray diffraction which reveals in particular the eventual formation of the uncommon gamma-alumina phase within 10 nm from the material surface. On the other hand, a rather thorough investigation of the phenomenology of the gamma-phase synthesis is presented, stressing various aspects: dynamic, energetic, structural and chemical, all of them stemming from ...
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Smart Tips For Finding Tips. Your lifestyle can help improve or worsen the symptoms of varicose veins, so its important you watch out for any activities or habits that may not help with your case. If youre obese, try losing weight so that theres less pressure on your legs. In addition, walking can also help with symptoms of varicose veins.. Endovenous Laser Therapy With endovenous therapy, a tiny laser fiber is placed into the vein. Then, pulses of laser light are beamed through the fiber into the varicose vein, destroying it. This is a procedure you can undergo on an outpatient basis under local anesthesia.. Radiofrequency Occlusion. Radiofrequency occlusion entails the placement of a small catheter into the vein. The purpose of this catheter is to transmit radiofrequency energy to the affected veins wall, heating it and causing it to collapse and close shut. Normally, this ought to be an outpatient therapy, and sometimes it requires local anesthesia.. Surgical Methods. There are several ...
Excimer laser ablations to the cornea (PresbyLASIK) to create a multifocal cornea may be an alternative treatment for patients with presbyopia
Excimer laser ablations to the cornea (PresbyLASIK) to create a multifocal cornea may be an alternative treatment for patients with presbyopia
Endovenous laser therapy (EVLT) is one of the more recent advances, enabling us to treat varicose veins in an almost painless fashion. Read more.
Having performed more than 15000+ cases, Dr Padaria is one of the Best Varicose Veins Surgeons in Mumbai, India. Dr. Padaria pioneered the technique of Endovenous Laser Treatment for Varicose Veins in India in January 2003.
SCHAUMBURG, IL--(Marketwired - Jun 4, 2013) - A new vein treatment center in the Chicago area is now relieving varicose vein sufferers using a painless, affordable treatment called endovenous laser therapy. Skypoint Medical Centers new Vein Center in Schaumburg provides this minimally invasive, in-office treatment alternative to vein surgery for...
EVLT Endovenous Laser Treatment is a revolutionary treatment for significant varicose veins cause by incompetence of the deep vein system.
Since 2004, VeinTherapies has brought the latest in laser vein technologies to Indian River County. We are one of the oldest and most experienced practices in our area exclusively dedicated to bringing our clients the newest, safest and most effective venous treatments. Our state-of-the-art lasers allow us to literally turn back time. At VeinTherapies, we can combine several techniques to customize a treatment plan and achieve the best possible results with little or no down time. We combine an extensive Vein Evaluation, Endovenous Laser Treatment or ELT, Microphlebectomy, Sclerotherapy, Laser Vein Therapy and Veinwave to achieve the best results for you ...
Doctors for Balloon Angioplasty in Delhi. Find Doctors Near You, Book Doctors Appointment, Consult Online, View Cost for Balloon Angioplasty in Delhi | Lybrate
Sequence illustrating the steps of balloon angioplasty in an artery suffering from Atherosclerosis. This procedure guides a deflated balloon into the narrowed artery. The balloon is inflated and as a result crushes the plaque into the walls of the artery. The balloon is deflated and removed leaving the passageway open for easy blood flow. Image 2 of 4. The pathology this procedure is used for is shown in images BP4210 and BP4211. - Stock Image C007/5682
The new VYPER/LB750 line beam annealing system enables volume production of low-temperature polysilicon (LTPS) on large generation 6 glass panels. LTP
International Journal of Engineering Inventions (IJEI) provides a multidisciplinary passage for researchers, managers, professionals, practitioners and student…
Research Report on Europe Cerebral Balloon Angioplasty & Stent Market Report 2017. The Report includes market price, demand, trends, size, Share, Growth, Forecast, Analysis & Overview.
The most common procedure for clearing blocked kidney arteries can also release thousands of tiny particles into the bloodstream that can impair kidney function, according to researchers from Wake Forest University Baptist Medical Center and colleagues.
The first observation to the authors knowledge of excimer molecules formed by reactive kinetics in a laser-produced plasma is reported. Emission from XeF at 351 nm and a new ionic excimer (XeRb)+ at 165 nm have been observed.. © 1989 Optical Society of America. Full Article , PDF Article ...
Angioplasty, or peripheral vascular angioplasty, is a medical procedure that opens narrowed or blocked blood vessels, arteries, or veins that is less invasive
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Question - Suffering from cold, cough and dry throat after angioplasty. What medication should be taken?. Ask a Doctor about Angioplasty, Ask a Cardiologist
The majority of angioplasty procedures to open blocked arteries involve the placement of a stent--a metal mesh tube that remains permanently in the artery. Learn more about stents: risks, benefits and types.
This is my journey from the very first symptoms of Multiple Sclerosis; 17 years of progressive disability, through the search for a cure to the angioplasty procedure for Chronic Cerebro-Spinal Venous Insufficiency that pulled me out of a wheelchair and into a second chance for life.There is no cure...but we have for the first time a chance for an enhanced quality of life.. ...
Angioplasty and stenting is a procedure to open narrow or blocked arteries caused by fatty material called plaque. It is often done to treat a heart attack.
Question - Had angioplasty, stents fitted, shivering. What is wrong?. Ask a Doctor about diagnosis, treatment and medication for Lung infection, Ask a Cardiologist
Several European studies have found that the majority of people who undergo nonemergency angioplasty do not have to remain in the hospital overnight, but further…
A week after undergoing angioplasty, Kapil Dev greeted his former India teammates, saying he is feeling very good and eager to meet everyone soon.
... 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 ...
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, ...
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 ...
... 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 - ...
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 ... particularly the XeCl laser, as pump sources for tunable dye lasers, mainly to excite laser dyes emitting in the blue-green ... Large-scale excimer-laser-pumped dye lasers, in High Power Dye Lasers, Duarte, F. J. (Ed.) (Springer, Berlin, 1991) Chapter 4. ...
... 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 ...
State-of-the-art intracoronary optical coherence tomography uses a swept-source laser to make OCT images at high-speed (i.e., ... IVOCT has been used as guidance for angioplasty intervention of coronary arteries, including optimization of stent implantation ...
... , also known as balloon angioplasty and percutaneous transluminal angioplasty (PTA), is a minimally invasive, ... Carotid angioplasty[edit]. Main article: Carotid artery stenting. Carotid artery stenosis is treated with angioplasty in a ... Peripheral angioplasty[edit]. Peripheral angioplasty refers to the use of a balloon to open a blood vessel outside the coronary ... Venous angioplasty[edit]. Angioplasty is occasionally used to treat venous stenosis, such as stenosis of the subclavian vein ...
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. ...
Low level laser therapy. Mesenteric ischemia. Surgical revascularization. Peripheral arterial occlusive disease. Angioplasty ... Charles Dotter, who invented angioplasty. Further development of the field has occurred via joint efforts between ... endovenous laser treatment are rapidly replacing major surgery in many first world countries. These newer procedures provide ... American interventional radiologist Charles Theodore Dotter who is credited with inventing minimally invasive angioplasty, and ...
Other applications include laser assisted angioplasties and laser-assisted vascular anastomosis. Foot and ankle surgeryEdit. ... Lasers are also used for laser-assisted lipectomy.[12]. Eye surgeryEdit. Various types of laser surgery are used to treat ... The laser beam penetrates the skin until it encounters chromophore which absorbs the laser beam. After absorption of the laser ... CO2 lasers are both efficient at cutting and coagulating.[9]. Dermatology and plastic surgeryEdit. A range of lasers such as ...
Laser Doppler imaging by near-infrared digital holography can reveal characteristic blood flow waveforms in the central artery ... Patients who do not respond to steroids may require revascularization, either via vascular bypass or angioplasty and stenting. ... "Transradial retrograde percutaneous transluminal angioplasty with stenting of long segment occlusion of subclavian artery". ...
By equipment used: Laser surgery involves use of a laser for cutting tissue instead of a scalpel or similar surgical ... Angioplasty. Bypass/Coronary artery bypass MIDCAB. Off-pump CAB. TECAB. Coronary stent. Bare-metal stent. Drug-eluting stent. * ... Other procedures that do not necessarily fall under this rubric, such as angioplasty or endoscopy, may be considered surgery if ... as in laparoscopic surgery or angioplasty. By contrast, an open surgical procedure such as a laparotomy requires a large ...
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 ... Lasers in Surgery and Medicine. 2002;30(3):177-183. [PubMed] [17] Seibel EJ, Smithwick QYJ, Brown CM, Reinhall PG. Single-fiber ... It is believed that the concept of moving an optical fiber to produce 2D images with confocal sectioning and laser illumination ...
... later by a laser (CR), or it may directly activate a matrix of solid-state detectors (DR-similar to a very large version of a ... such as angioplasty, pacemaker insertion, or joint repair/replacement. The latter can often be carried out in the operating ...
... is a medical technique for visualizing the interior of blood vessels. In this technique, a flexible fiberoptic catheter inserted directly into an artery.[1] It can be helpful in diagnosing e.g. arterial embolism.[1] Angioscopy is also used as an adjunctive procedure during vascular bypass to visualize valves within venous conduits. The instrument used to perform angioscopy is called as angioscope. Coronary artery angioscopy, which first was used to reveal the presence of a blood clot in the coronary arteries of patients with unstable angina and myocardial infarction,[2] is now widely used in catherization laboratories to visualize stents. ...
Angioplasty. Bypass/Coronary artery bypass MIDCAB. Off-pump CAB. TECAB. Coronary stent. Bare-metal stent. Drug-eluting stent. * ...
The patient must be placed supine, without the head or any extremities dangling over the edge of the table. Measurement of ankle blood pressures in a seated position will grossly overestimate the ABI (by approximately 0.3). A Doppler ultrasound blood flow detector, commonly called Doppler wand or Doppler probe, and a sphygmomanometer (blood pressure cuff) are usually needed. The blood pressure cuff is inflated proximal to the artery in question. Measured by the Doppler wand, the inflation continues until the pulse in the artery ceases. The blood pressure cuff is then slowly deflated. When the artery's pulse is re-detected through the Doppler probe the pressure in the cuff at that moment indicates the systolic pressure of that artery. The higher systolic reading of the left and right arm brachial artery is generally used in the assessment. The pressures in each foot's posterior tibial artery and dorsalis pedis artery are measured with the higher of the two values used as the ABI for that leg.[2] ...
While most IVC filters are made of non-ferromagnetic materials, there are a few types that are weakly ferromagnetic. Accordingly, IVC filters fall under the MRI Safe and MRI Conditional categories depending mostly on type of material used during construction. Rarely will one find an MRI Not Safe IVC filter, as most of the steel, and other ferromagnetic material devices have been discontinued via the FDA. IVC filters are attached to the vena cava via hooks on their ends. Some are compression springs, which compress outward onto the side wall of the vena cava; however, they still have small hooks that retain their location. These hooks aid in the anchoring and healing process, as they allow the tissues to 'ingrow' around them, securing the IVC in place. It is unlikely, then, after 4 to 6 weeks of healing, that an MRI of 1.5 tesla, up to 3 tesla, will cause any level of dislodging to occur to the IVC filter. Studies of MR examination of both animals and humans, with implanted IVC filters, have not ...
Angioplasty. Bypass/Coronary artery bypass MIDCAB. Off-pump CAB. TECAB. Coronary stent. Bare-metal stent. Drug-eluting stent. * ...
Optical/Laser. *Optical tomography *Optical coherence tomography. *Confocal microscopy. *Endomicroscopy. *Orthogonal ...
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". J Biomech Eng. 130 (1): ...
Percutaneous angioplasty or atherectomy of precerebral (extracranial) vessel(s) (01) Incision and excision of skull, brain, and ... guided laser induced prostatectomy (TULIP) (60.29) Other transurethral prostatectomy Transurethral resection of prostate (TURP ...
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 ...
Angioplasty. Bypass/Coronary artery bypass MIDCAB. Off-pump CAB. TECAB. Coronary stent. Bare-metal stent. Drug-eluting stent. * ... or laser ablation have also been developed but are not in widespread use. ... twin in recent studies than previous methods including laser photocoagulation. Due to the rarity of this complication, its ...
Angioplasty. Bypass/Coronary artery bypass MIDCAB. Off-pump CAB. TECAB. Coronary stent. Bare-metal stent. Drug-eluting stent. * ...
Angioplasty. Bypass/Coronary artery bypass MIDCAB. Off-pump CAB. TECAB. Coronary stent. Bare-metal stent. Drug-eluting stent. * ... Removal in other cases is typically done with a laser or cutting device which threads like a cannula with a cutting edge over ... the lead and is moved down the lead to remove any organic attachments with tiny cutting lasers or similar device. ...
The distal end of the waveguide can have a short section of larger diameter fiber fused to it to cause a laser beam transmitted ... Grundfest, W.S., Pulsed Ultraviolet Lasers and the Potential for Safe Laser Angioplasty, The American Journal of Surgery, vol. ... Grundfest, W.S., Pulsed Ultraviolet Lasers and the Potential for Safe Laser Angioplasty, The American Journal of Surgery, vol. ... White, R.A., "Catheters for Laser Angioplasty--Design Considerations", Lasers in Cardiovascular Disease: Clinical Applications ...
Laser angioplasty, coronary arteries, calcified stenosis, chronic total occlusions, Subjects:. WB Practice of medicine , WB 300 ... Laser angioplasty has been reported as a debulking tool in highly calcified stenosis and in chronic total occlusions followed ... by a conventional balloon angioplasty/stenting. This systematic review includes one randomized controlled trial and two case ...
Topaz, O., McIvor, M., & De Marchena, E. (1995). Solid-state, pulsed-wave, mid-infrared coronary laser angioplasty in de novo ... Topaz, O, McIvor, M & De Marchena, E 1995, Solid-state, pulsed-wave, mid-infrared coronary laser angioplasty in de novo versus ... Solid-state, pulsed-wave, mid-infrared coronary laser angioplasty in de novo versus restenosis lesions: Observations from a ... Solid-state, pulsed-wave, mid-infrared coronary laser angioplasty in de novo versus restenosis lesions: Observations from a ...
To help elucidate the mechanism of excimer laser coronary angioplasty (ELCA), intravascular ultrasound (IVUS) imaging was ... Angioplasty, Laser* / adverse effects. Angioplasty, Transluminal, Percutaneous Coronary. Coronary Artery Disease / pathology, ... To help elucidate the mechanism of excimer laser coronary angioplasty (ELCA), intravascular ultrasound (IVUS) imaging was ... 2013078 - Angioplasty of coronary bifurcation stenoses: immediate and long-term results of the pr.... 1398688 - Angioplasty of ...
Laser AngioplastyLaser Angioplasty (also known as excimer laser coronary angioplasty) is a technique that can be used to open ... Laser Angioplasty (also known as excimer laser coronary angioplasty) is a technique that can be used to open coronary arteries ... Laser Angioplasty. Please note: reference image is displayed in place of Flash media. ... Coronary AngioplastyCoronary Angioplasty (also called percutaneous coronary intervention or PCI) is a procedure that opens up ...
Laser balloon angioplasty (LBA) is a technique for improving the post angioplasty result by the radial diffusion of continuous ... Management of failed angioplasty with laser balloon angioplasty Author(s): Ronald D. Jenkins; J. Richard Spears ... YAG laser energy to the arterial wall during the final inflation of percutaneous transluminal coronary angioplasty (PTCA). ...
... to facilitate conversion of laser energy to thermal energy. The probe body is fixedly secured to the optical fiber by a ... the proximal end of the fiber being connectable to a source of laser energy. The probe assembly comprises a thermally ... A laser-energizable thermal probe comprising a probe assembly connected to the distal end of an optical fiber, ... US4760845A - Laser angioplasty probe - Google Patents. Laser angioplasty probe Download PDF Info. Publication number. ...
Prior to laser angioplasty, angioscopy demonstrated endoluminal findings that were not detected by angiography. Following laser ... Percutaneous angioscopy of sapphire-tip laser angioplasty Author(s): Michael Ralph Rees; Abdurrazak A. Gehani; Simon Ashley; ... guiding catheter system was used to evaluate the endoluminal appearances before and after laser angioplasty using ND-YAG laser ... angioplasty it was observed that the probes predominantly recanalised via the true lumen of the vessel with charring and other ...
Laser-driven short-duration heating angioplasty: dilatation performance in cadaver atherosclerotic femoral arteries Author(s): ... 25 s by a combination of laser-driven heat generation and continuous fluid irrigation in the balloon. We performed ex vivo ... laser irradiation duration of 25 s, and balloon dilatation pressure of 3.5 atm. The artery lumen configurations before and ...
laser, then balloon angioplasty. Device: Turbo Elite Laser and Turbo Tandem Laser Guide Catheters application of laser energy ... Device: Turbo Elite Laser and Turbo Tandem Laser Guide Catheters Procedure: Balloon angioplasty Phase 2 Phase 3 ... Randomized Study of Laser and Balloon Angioplasty Versus Balloon Angioplasty to Treat Peripheral In-stent Restenosis (EXCITE ... The purpose of the study is to evaluate the safety and efficacy of laser atherectomy with balloon angioplasty compared to ...
Evidence-based recommendations on percutaneous laser atherectomy with balloon angioplasty (with or without stenting) for ... Percutaneous laser atherectomy as an adjunct to balloon angioplasty (with or without stenting) for peripheral arterial disease ...
Evidence-based recommendations on percutaneous laser atherectomy with balloon angioplasty (with or without stenting) for ... Percutaneous laser atherectomy as an adjunct to balloon angioplasty (with or without stenting) for peripheral arterial disease ... Scotland and Northern Ireland on Percutaneous laser atherectomy as an adjunct to balloon angioplasty (with or without stenting ... For this procedure, a laser attached to a flexible plastic tube (a catheter) is inserted into a blood vessel in the leg and ...
Comparison of Angioplasty/Drug Coated Balloon/Laser + Drug Coated Balloon for Femoropopliteal Artery In-stent Restenosis ... Comparison of Angioplasty/Drug Coated Balloon/Laser + Drug Coated Balloon for Femoropopliteal Artery In-stent Restenosis Are ...
Comparison of Immediate and 2-Year Outcomes between Excimer Laser-Assisted Angioplasty with Spot Stent and Primary Stenting in ... "Comparison of Immediate and 2-Year Outcomes between Excimer Laser-Assisted Angioplasty with Spot Stent and Primary Stenting in ...
Excimer laser coronary angioplasty (ELCA) is a unique revascularization modality that can vaporize plaque and thrombus. ... This includes laser thermal angioplasty where the laser energy heats up a metal tip, and direct laser angioplasty where the ... When laser angioplasty is performed in combination with balloon angioplasty it is called laser-assisted balloon angioplasty ( ... balloon angioplasty immediately following laser angioplasty; or 3, laser energy transmitted through angioplasty balloons that ...
Sultan S, Tawfick W and Hynes N: Cool excimer laser-assisted angioplasty (CELA) and tibial balloon angioplasty (TBA) in ... Liu H, Gu Y, Yang S, He J and Zhang F: Excimer laser atherectomy combined with drug‑coated balloon angioplasty for the ... Bosiers M, Peeters P, Elst FV, Vermassen F, Maleux G, Fourneau I and Massin H: Excimer laser assisted angioplasty for critical ... Liu, H., Gu, Y., Yang, S., He, J., Zhang, F.Excimer laser atherectomy combined with drug‑coated balloon angioplasty for the ...
Coronary artery perforation during excimer laser coronary angioplasty. The percutaneous Excimer Laser Coronary Angioplasty ... The mechanism and prognosis of vessel perforation following excimer laser coronary angioplasty in the new generation laser ... "The mechanism and prognosis of vessel perforation following excimer laser coronary angioplasty in the new generation laser ... "The mechanism and prognosis of vessel perforation following excimer laser coronary angioplasty in the new generation laser ...
Excimer laser atherectomy after unsuccessful angioplasty of TASC C and D lesions in femoropopliteal arteries. Wissgott C., ... Aim: The study objective was to examine the application of excimer laser atherectomy (ELA) in patients with refractory ... an excimer laser catheter (catheter diameters from 1.7-2.5 mm) was used for recanalization using the step-by-step method of ... occlusions in femoropopliteal arteries, where the initial conventional percutaneous transluminal angioplasty (PTA) ...
Minimal lumen diameter before excimer laser-assisted balloon angioplasty and balloon angioplasty alone were (mean ± SD) 0.73 ± ... After laser-assisted balloon angioplasty, elastic recoil was 0.84 ± 0.30 mm (32% of balloon size), which was identical to that ... A series of 57 consecutive coronary lesions successfully treated by xenon chloride excimer laser-assisted balloon angioplasty ... Coronary lumen changes during and after excimer laser-assisted balloon angioplasty were measured by quantitative coronary ...
Recently, excimer laser coronary angioplasty (ELCA) with angiographic or intra vascular ultrasound guidance failed to show its ... TCT-589 Effectiveness of Excimer Laser Coronary Angioplasty with Optical Coherence Tomography Guidance for In-stent Restenosis ... TCT-589 Effectiveness of Excimer Laser Coronary Angioplasty with Optical Coherence Tomography Guidance for In-stent Restenosis ... TCT-589 Effectiveness of Excimer Laser Coronary Angioplasty with Optical Coherence Tomography Guidance for In-stent Restenosis ...
An optical radiating apparatus is formed on one end of a light-conducting optical fiber such that high intensity laser ... An apparatus for delivery of high intensity laser radiation of large spot size into arteries and a method for making same are ... Early laser angioplasty systems, however, have not taken full advantage of the unique properties of laser radiation. As a ... Optical fiber with atraumatic rounded end for use in laser angioplasty US07/919,150 Expired - Fee Related US5304228A (en) 1990- ...
... laser explanation free. What is Angioplasty, laser? Meaning of Angioplasty, laser medical term. What does Angioplasty, laser ... Looking for online definition of Angioplasty, laser in the Medical Dictionary? Angioplasty, ... Related to Angioplasty, laser: Excimer laser. Angioplasty. Definition. Angioplasty is a term describing a procedure used to ... laser-assisted angioplasty. The use of laser energy to vaporize an atherosclerotic plaque in a diseased coronary or peripheral ...
Coronary aneurysm is a rare complication after coronary excimer laser angioplasty. A 45-year-old woman underwent laser ... Treatment of in-stent restenosis with excimer laser coronary angioplasty: benefits over scoring balloon angioplasty alone. ... treatment-of-in-stent-restenosis-with-excimer-laser-coronary-angioplasty-benefits-over-scoring-balloon-angioplasty-alone ... Other indications for laser angioplasty embrace in-stent restenosis, chronic total occlusions, saphenous vein graft lesions and ...
... balloon angioplasty immediately following laser angioplasty; or 3, laser energy transmitted through angioplasty balloons that ... Laser-Assisted" by people in this website by year, and whether "Angioplasty, Balloon, Laser-Assisted" was a major or minor ... Techniques using laser energy in combination with a balloon catheter to perform angioplasty. These procedures can take several ... "Angioplasty, Balloon, Laser-Assisted" is a descriptor in the National Library of Medicines controlled vocabulary thesaurus, ...
Catheters, Vascular, Angioplasty, Direct Laser Ablation. Definition : Angioplasty catheters designed for direct laser ablation ... " , "Laser Ablation Catheters" , "Laser Angioplasty Catheters" , "Catheters, Angioplasty, Laser" , "Ablation Catheters" , " ... Laser angioplasty catheters are mostly used before balloon angioplasty for canalization of completely occluded vessels, for ... The Spectranetics Corporation was founded in the 1980s on excimer laser technology and today markets the only Excimer Laser ...
Mark, N.J., Augousti, A.T. and Belli, A.-M. (1996) A Study of the Radiological Use of Laser Angioplasty in Britain. Lasers in ... Laser recanalization was introduced and developed in Britain in the 1980s in an attempt to deal with the limitations associated ... However, despite current disenchantment, the majority of radiologists questioned felt that lasers could have a future role to ... the high cost of the laser system, and the lack of evidence of any improvement in results compared with conventional PTA. ...
Balloon Angioplasty, Coronary Artery Balloon Dilation, Angioplasty, Laser Angioplasty, Artificial Heart Valve Surgery, ... Balloon Angioplasty, Coronary Artery Balloon Dilation, Percutaneous Coronary Interventions, PCI, ... Angioplasty, Laser What the Procedure Does. Similar to angioplasty except that the catheter has a laser tip that opens the ... Angioplasty Also known as Percutaneous Coronary Interventions [PCI], Balloon Angioplasty and Coronary Artery Balloon Dilation ...
laser angioplasty Laser angioplasty is a technique used to open coronary arteries blocked by plaque. In a laser angioplasty ... procedure, a tube known as a catheter is inserted into an artery, then moved to the blockage; once there, a laser at the tip of ...
Angioplasty - Excimer Laser - Animation. Interactive section of Medindia gives explanation for Angioplasty - Coronary Artery ... Angioplasty - Animation. Arteries supplying the heart is sometimes blocked by plaque leading to heart attack.Angioplasty is a ... Angioplasty - 3D - Animation. Interactive section of Medindia gives explanation for Angioplasty - 3D. ...
keywords = "Carbon monoxide laser, Laser balloon angioplasty, Percutaneous transluminal coronary angioplasty, Restenosis", ... Implications for Laser Balloon Angioplasty-. Together they form a unique fingerprint. * Laser-Assisted Balloon Angioplasty ... To limit the thickness of the coagulation layer in laser balloon angioplasty, we used a carbon monoxide (CO) laser, which has ... To limit the thickness of the coagulation layer in laser balloon angioplasty, we used a carbon monoxide (CO) laser, which has ...
  • Laser angioplasty has been reported as a debulking tool in highly calcified stenosis and in chronic total occlusions followed by a conventional balloon angioplasty/stenting. (aihta.at)
  • The following is a study of the response of de novo versus restenosis coronary lesions to pulsed-wave, mid-infrared (holmium:YAG) laser assisted angioplasty. (elsevier.com)
  • In a clinical multicenter study, a mid-infrared, solid-state, pulsed-wave laser (holmium:YAG, 2.1 μm wavelength, 250-600 mJ/pulse, 5 Hz) was applied for revascularization of de novo and restenosis coronary lesions. (elsevier.com)
  • With the mid-infrared, pulsed-wave, holmium:YAG laser, the composition of the target lesion affects the energy level required, as well as the procedure-related complications. (elsevier.com)
  • Restenosis lesions, known to be composed of smooth muscle proliferation, needed more laser energy for ablation than de novo lesions, which contain an atherosclerotic plaque (130 ± 123 pulses vs 109 ± 31, p = 0.001). (elsevier.com)
  • Laser success was 87 and 86% in these lesions, respectively. (elsevier.com)
  • Analysis of data was undertaken to document laser success, complications, and restenosis rate and to define whether the type of lesion treated had an effect on laser success and related complications. (elsevier.com)
  • It is not known whether the different composition affects results of treatment by laser. (elsevier.com)
  • A catheter with a laser at its tip is inserted into an artery. (medmovie.com)
  • Percutaneous angioscopy using flexible steerable 2.2mm diameter and non-steerable 1.4 mm. angioscopes together with a guiding catheter system was used to evaluate the endoluminal appearances before and after laser angioplasty using ND-YAG laser energy modified by 1.8,2.2 and 3.0 mm rounded sapphire probes in 8 patients with occlusive peripheral vascular disease. (spie.org)
  • We designed a prototype short-duration heating balloon catheter that can heat artery media to around 60 °C in 15−25 s by a combination of laser-driven heat generation and continuous fluid irrigation in the balloon. (spie.org)
  • For this procedure, a laser attached to a flexible plastic tube (a catheter) is inserted into a blood vessel in the leg and moved to the site of the blockage to burn away the deposits. (nice.org.uk)
  • This study showed that efficacy of 0.9 and 1.4 mm excimer laser catheter was equivalent in ELCA for AMI patients. (bioportfolio.com)
  • platelets phenomenon, the 0.9 mm excimer laser catheter is sufficient for ELCA in AMI patients. (bioportfolio.com)
  • A technique utilizing a laser coupled to a catheter which is used in the dilatation of occluded blood vessels. (bioportfolio.com)
  • Yoshida R, Takagi K, Morishima I, Morita Y, Kanzaki Y, Tsuboi H. The mechanism and prognosis of vessel perforation following excimer laser coronary angioplasty in the new generation laser catheter era. (termedia.pl)
  • Also, the risk factors related to ELCA-induced vessel perforation in the era of a new indication, ACS, and a new generation excimer laser catheter are unknown. (termedia.pl)
  • After the unsuccessful attempt, an excimer laser catheter (catheter diameters from 1.7-2.5 mm) was used for recanalization using the step-by-step method of crossing. (minervamedica.it)
  • Techniques using laser energy in combination with a balloon catheter to perform angioplasty. (ucdenver.edu)
  • It has been determined that the main reasons for the decline are improvements in conventional guidewire and catheter technology, the high cost of the laser system, and the lack of evidence of any improvement in results compared with conventional PTA. (kingston.ac.uk)
  • A new technique, pioneered by several groups of researchers in the early 1980s, combines lasers with the catheter. (encyclopedia.com)
  • Similar to angioplasty except that the catheter has a laser tip that opens the blocked artery. (heart.org)
  • Similar to angioplasty except that the catheter has a rotating shaver on its tip to cut away plaque from the artery. (heart.org)
  • For example, percutaneous transluminal angioplasty (PTA) means that the vessel is entered through the skin (percutaneous) and that the catheter is moved into the blood vessel of interest through the same vessel or one that communicates with it (transluminal). (encyclopedia.com)
  • In the case of an angioplasty involving the coronary arteries, the point of entry might be the femoral artery in the groin, with the catheter/guidewire system passed through the aorta to the heart and the origin of the coronary arteries at the base of the aorta just outside the aortic valve. (encyclopedia.com)
  • In angioplasty, a thin tube called a catheter with a balloon or other device on the end is first threaded through a blood vessel in the arm or groin (upper thigh) up to the site of a narrowing or blockage in a coronary artery. (daviddarling.info)
  • Laser angioplasty is similar to balloon angioplasty, but instead of a balloon-tipped catheter, one with a laser at the tip is used. (yourmedicalsource.com)
  • Stents are small, expandable, metal devices inserted by a catheter into a narrowed artery after the angioplasty procedure is complete. (yourmedicalsource.com)
  • A mode mixer is described for mixing themodes of optical fibers in a laser catheter adapted to be inserted in arteries for treatment of arterial tissue or obstructions. (google.es)
  • This invention relates to devices in which optical fibers are provided within a catheter and laser radiation is directed through the fibers for medical applications including diagnosis and removal of arterial or vascular obstructions (angiosurgery). (google.es)
  • 3. The angioplasty device of claim 2 wherein said control means comprises an expansion canal situated within said catheter bundle and connected to said operative member by an expansion aperture. (freepatentsonline.com)
  • The catheter sends out laser energy that shrinks and seals the vein wall. (iuhealth.org)
  • A thin laser optic fiber is inserted through a catheter in the greater saphenous vein. (ucdavis.edu)
  • Chief Deputy Coroner Arthur Reid said Snyder underwent angioplasty, a procedure in which a catheter is inserted into an artery of the heart, and a tiny balloon is inflated against the artery walls to open the blood flow. (mcall.com)
  • 13. Laser Catheter Ablation of Arrhythmias. (booktopia.com.au)
  • 16. Catheter Systems for Laser Angioplasty. (booktopia.com.au)
  • 21. Laser Angioplasty Using a Special Sapphire-Tip Catheter: Preliminary Clinical Trial. (booktopia.com.au)
  • The laser catheter has been used to solve this problem. (springer.com)
  • Atherectomy is a form of angioplasty that uses tiny blades or a drill-like tip on the end of the catheter to cut away or drill through the plaque. (yourmedicalsource.com)
  • Now angioplasty is also done using tiny blades, a drill, or a laser attached to the tip of the catheter, in place of the balloon. (yourmedicalsource.com)
  • balloon angioplasty angioplasty in which a balloon catheter is inflated inside an artery, stretching the intima and leaving a ragged interior surface after deflation, which triggers a healing response and breaking up of plaque. (thefreedictionary.com)
  • percutaneous transluminal angioplasty a type of balloon angioplasty in which the catheter is inserted through the skin and through the lumen of the vessel to the site of the narrowing. (thefreedictionary.com)
  • Angioplasty is a term describing a procedure used to widen vessels narrowed by stenoses or occlusions. (thefreedictionary.com)
  • If angioplasty is performed in the radiology department's angiographic suite, the patient may be sedated for the procedure and a nurse will monitor the patient's vital signs during the procedure. (thefreedictionary.com)
  • If performed by a vascular surgeon, the angioplasty procedure will be performed in an operating room or specially designed vascular procedure suite. (thefreedictionary.com)
  • Angioplasties performed by vascular surgeons are done in an operating room or specially designed vascular procedure suite. (encyclopedia.com)
  • Angioplasty is a keyhole surgery procedure for repairing damaged or diseased blood vessels. (daviddarling.info)
  • Percutaneous coronary intervention (PCI), commonly known as coronary angioplasty is a therapeutic procedure to treat the stenotic (narrowed) coronary arteries of the heart found in coronary heart disease . (wikidoc.org)
  • This procedure is begun similar to angioplasty. (yourmedicalsource.com)
  • It is used for patients who aren't candidates for angioplasty or bypass surgery, usually because their heart is too weak to withstand either procedure or because plaque build-up is so widespread that it would be impossible to treat every narrowing. (yourmedicalsource.com)
  • TMR is sometimes called the "snake heart" procedure, because the surgeon duplicates the design of the reptile heart by using a laser to create open channels in the heart muscle. (yourmedicalsource.com)
  • Your doctor may then use a procedure such as angioplasty or coronary artery bypass grafting to help open up these blockages. (ahealthyme.com)
  • A variation on this procedure uses a laser instead of a balloon. (ahealthyme.com)
  • With the mid-infrared, pulsed-wave, holmium:YAG laser, the composition of the target lesion affects the energy level required, as well as the procedure-related complications. (elsevier.com)
  • In a procedure called "laser thermal angioplasty," the surgeons use a laser-heated probe to tunnel through a blockage. (mcall.com)
  • Coronary angioplasty is a medical procedure during which narrowed arteries that supply blood to the heart muscle are widened, to allow for improved flow of blood through these arteries to the heart, without the need for open heart surgery. (yourmedicalsource.com)
  • Angioplasty is a procedure that widens narrowed arteries in the heart without the need for major surgery. (yourmedicalsource.com)
  • More than a half million angioplasties are performed each year in the United States alone, making it the most common procedure for treating narrowed or blocked arteries and restoring blood flow to the heart. (yourmedicalsource.com)
  • Transmyocardial laser revascularization (TMR) is a procedure used to treat inoperable heart disease in people with persistent angina that isn't relieved by any other revascularization method. (wikipedia.org)
  • Transmyocardial laser revascularization (TMR) can also be performed as a secondary procedure in patients that have ischemic heart disease with areas of the heart that cannot be bypassed. (wikipedia.org)
  • The purpose of the study is to evaluate the safety and efficacy of laser atherectomy with balloon angioplasty compared to balloon angioplasty alone in the treatment of above the knee peripheral artery in-stent restenosis. (clinicaltrials.gov)
  • Recently, excimer laser coronary angioplasty (ELCA) with angiographic or intra vascular ultrasound guidance failed to show its superiority over the conventional balloon angioplasty for treating in-stent restenosis (ISR). (onlinejacc.org)
  • There has been growing concern, however, about a buildup in the arteries called restenosis that often appears in patients who have undergone balloon angioplasty . (encyclopedia.com)
  • Laser balloon angioplasty using a CO laser may help to prevent restenosis. (elsevier.com)
  • 1. Cutting balloon angioplasty might be considered to avoid slippage induced coronary artery trauma during PCI for in-stent restenosis or ostial lesions in side branches [7] . (wikidoc.org)
  • Excimer laser angioplasty was used to treat total occluded coronary arteries and instent restenosis lesions with high success rate. (who.int)
  • The following is a study of the response of de novo versus restenosis coronary lesions to pulsed-wave, mid-infrared (holmium:YAG) laser assisted angioplasty. (elsevier.com)
  • In a clinical multicenter study, a mid-infrared, solid-state, pulsed-wave laser (holmium:YAG, 2.1 μm wavelength, 250-600 mJ/pulse, 5 Hz) was applied for revascularization of de novo and restenosis coronary lesions. (elsevier.com)
  • Analysis of data was undertaken to document laser success, complications, and restenosis rate and to define whether the type of lesion treated had an effect on laser success and related complications. (elsevier.com)
  • Restenosis lesions, known to be composed of smooth muscle proliferation, needed more laser energy for ablation than de novo lesions, which contain an atherosclerotic plaque (130 ± 123 pulses vs 109 ± 31, p = 0.001). (elsevier.com)
  • Despite the advantages of PTCA, 30-50% of patients require repeat balloon angioplasty or CABG for restenosis within 6 months. (thefreedictionary.com)
  • Insertion of a stainless steel stent at the time of balloon angioplasty to maintain arterial patency has improved initial success and reduced the 6-month restenosis rate. (thefreedictionary.com)
  • Intracoronary radiation involves irradiation of the section of artery after balloon angioplasty to help prevent in-stent restenosis. (canada.com)
  • To help elucidate the mechanism of excimer laser coronary angioplasty (ELCA), intravascular ultrasound (IVUS) imaging was performed in 19 of 29 patients who were treated with ELCA. (biomedsearch.com)
  • After balloon dilatation in the laser treated group, lumen diameter (2.5 x 2.1 mm) and lumen CSA (4.9 mm2) were significantly greater than those post ELCA alone. (biomedsearch.com)
  • Excimer laser coronary angioplasty (ELCA) is a unique revascularization modality that can vaporize plaque and thrombus. (bioportfolio.com)
  • The objectives of this study are to observe and examine prospectively whether excimer laser coronary angioplasty (ELCA) and percutaneous coronary intervention with biodegradable-polymer pl. (bioportfolio.com)
  • This study evaluated the clinical safety and 6-month efficacy of excimer laser coronary angioplasty (ELCA) before scoring balloon dilatation for the treatment of ISR. (readbyqxmd.com)
  • OBJECTIVE: To describe the six month outcome and predictors of adverse clinical events following successful excimer laser coronary angioplasty (ELCA). (elsevier.com)
  • 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)
  • 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)
  • As of 2003, the catheters used to perform angioplasties contain balloons that are inflated to widen the vessel, and stents (thin collapsed tubes made of wire mesh) to provide structural support for the vessel. (encyclopedia.com)
  • Stents are used in most angioplasties except when an artery is too small for a stent to fit. (daviddarling.info)
  • Stents are now used in combination with balloon angioplasty an estimated 60% to 70% of the time. (yourmedicalsource.com)
  • Generally, stents have improved the outcome of patients who have angioplasty. (yourmedicalsource.com)
  • Under his leadership, NYU Winthrop's Cardiac Catheterization Laboratory has developed a regional and national reputation for excellent patient outcomes and for pioneering the latest technologies and techniques on Long Island, including the first implantations of the Xience and Endeavor drug-eluting stents and the first placement of the Impella ventricular assist device for high-risk angioplasty. (winthrop.org)
  • However, there was no difference in lumen CSA or atheroma CSA in the group treated with excimer laser plus balloon dilatation vs. these measurements in the group treated with PTCA alone. (biomedsearch.com)
  • Laser balloon angioplasty (LBA) is a technique for improving the post angioplasty result by the radial diffusion of continuous wave Neodymium:YAG laser energy to the arterial wall during the final inflation of percutaneous transluminal coronary angioplasty (PTCA). (spie.org)
  • If a percutaneous transluminal coronary angioplasty (PTCA) is to be performed, the patient will be kept awake to report on discomfort and cough if required. (thefreedictionary.com)
  • Angioplasty, also known as "Percutaneous Transluminal Coronary Angioplasty" (PTCA), rapidly came into widespread use around the world as a relatively simple, inexpensive, and safe alternative to coronary bypass surgery (a major operation that requires cutting open the patient's chest and usually a leg, from which a vein is harvested, or taken, to be used in the bypass). (encyclopedia.com)
  • If a percutaneous transluminal coronary angioplasty (PTCA) is to be performed, the patient is sedated so that he or she can report discomfort and cough if asked to do so. (encyclopedia.com)
  • Coronary Angioplasty in Australia 1998 provides details of percutaneous transluminal coronary angioplasty (PTCA) as performed in Australia in 1998. (aihw.gov.au)
  • Balloon angioplasty, also called percutaneous transluminal coronary angioplasty (or PTCA), was the original type of angioplasty. (yourmedicalsource.com)
  • percutaneous transluminal coronary angioplasty (PTCA) percutaneous transluminal angioplasty to enlarge the lumen of a sclerotic coronary artery (see accompanying illustration). (thefreedictionary.com)
  • It's sometimes called percutaneous transluminal coronary angioplasty (PTCA) or percutaneous coronary intervention (PCI). (canada.com)
  • Schillinger M, Sabeti S, Dick P, Amighi J, Mlekusch W, Schlager O, Loewe C, Cejna M, Lammer J and Minar E: Sustained benefit at 2 years of primary femoropopliteal stenting compared with balloon angioplasty with optional stenting. (spandidos-publications.com)
  • The National Institute for Health and Clinical Excellence (NICE) has issued full guidance to the NHS in England, Wales, Scotland and Northern Ireland on Percutaneous laser atherectomy as an adjunct to balloon angioplasty (with or without stenting) for peripheral arterial disease. (nice.org.uk)
  • The aim of the present retrospective study was to evaluate the feasibility, safety and the primary results following application of excimer laser atherectomy (ELA) combined with adjunctive drug‑coated balloon angioplasty (DCBA) as the first‑line endovascular treatment for patients with chronic obstructive femoropopliteal arterial disease. (spandidos-publications.com)
  • 11. Laser-Induced Arterial Fluorescence Spectroscopy. (booktopia.com.au)
  • Background and Purpose To study the effects of in vivo transluminal balloon angioplasty (TBA) on the structure and function of the arterial wall, a canine model of hemorrhagic cerebral vasospasm of the high cervical internal carotid artery (ICA) was used. (ahajournals.org)
  • a pulsed XeCl Excimer laser having an output wavelength of about 308 nm, with each pulse having a duration between 100 nsec and 3000 nsec and being coupled into a proximal end of said fiber-optic waveguides at a density of at least 50 mJ/mm 2 to ablate atherosclerotic plaque in a blood vessel. (google.com)
  • In 1964 Charles T. Dotter and Melvin Judkins of the University of Oregon (Eugene) combined these advances to successfully perform transluminal (along the "lumen," or cavity, of a blood vessel) angioplasty (blood vessel repair). (encyclopedia.com)
  • The laser vaporizes plaque in arteries, then balloon angioplasty finishes the opening of the blood vessel. (encyclopedia.com)
  • An angioplasty is done to reopen a partially blocked blood vessel so that blood can flow through it again at a normal rate. (encyclopedia.com)
  • Angioplasty is the mechanical widening of a narrowed or totally obstructed blood vessel . (wikidoc.org)
  • An angioplasty is when a blood vessel, in particular a coronary artery, is unblocked. (toptenz.net)
  • Comparative studies of patients undergoing myocardial revascularization through either surgery or angioplasty have not reported statistically significant differences in regard to immediate or late survival rates between the 2 types of treatment. (scielo.br)
  • Our cardiologists were the first in the region to offer the minimally invasive transmyocardial revascularization (TMR) laser to relieve angina. (trihealth.com)
  • REvascularization RateS and Clinical OUtcomes With DABRA Laser. (cardiosmart.org)
  • TMR, or transmyocardial laser revascularization, is a newer treatment aimed at improving blood flow to areas of the heart that were not treated by angioplasty or surgery. (wikipedia.org)
  • For example, percutaneous transluminal angioplasty (PTA) describes entry through the skin (percutaneous) and navigates to the area of the vessel of interest through the same vessel or one that communicates with it (transluminal). (thefreedictionary.com)
  • Although many angioplasties are performed by puncturing the vessel through the skin, others are done by surgically exposing the site of entry. (encyclopedia.com)
  • The term angioplasty is a portmanteau of the words "angio" (from the Latin/ Greek word meaning "vessel") and "plasticos" (Greek: fit for moulding). (wikidoc.org)
  • An angioplasty device is disclosed for treatment of, or for compression and/or removal of an obstruction from, a vessel or vessel-like structure in medical, non-medical and industrial applications. (freepatentsonline.com)
  • A method for treatment of, or for removal or compression of an obstruction in, a vessel or vessel-like structure is disclosed that utilizes an angioplasty device of the instant invention. (freepatentsonline.com)
  • A method employing an angioplasty device of the instant invention is also disclosed for preventing particles from escaping from a point of manipulation of a vessel or vessel-like structure. (freepatentsonline.com)
  • These variations, however, have been observed in recent studies comparing the results of surgery and angioplasty 9 , including 45% of patients with single-vessel disease, while the samples of other studies 14,17 had 60% of patients with 2-vessel stenoses. (scielo.br)
  • Angioplasty -A balloon is inflated to open the vessel. (epnet.com)
  • Angioplasty and stent placement -After the balloon is used, a mesh frame called a stent will be placed in the vessel to support the walls to keep the vessel open. (epnet.com)
  • We performed ex vivo short-duration heating dilatation in the cadaver atherosclerotic femoral arteries (initial percent diameter stenosis was 36-98%), with the maximum balloon temperature of 65±5 °C, laser irradiation duration of 25 s, and balloon dilatation pressure of 3.5 atm. (spie.org)
  • Laser Angioplasty (also known as excimer laser coronary angioplasty) is a technique that can be used to open coronary arteries blocked by plaque. (medmovie.com)
  • When the laser is in position, it emits pulsating beams of light that vaporize the plaque. (medmovie.com)
  • However, an excimer laser, which can vaporize thrombus, suppress platelet aggregation, and ablate the underlying plaque, has recently been shown to be effective in patients with acute coronary syndrome (ACS) [ 5 ]. (termedia.pl)
  • In balloon angioplasty, plaque is pushed out of the clogged artery by the inflation of the balloon device. (thefreedictionary.com)
  • Lasers may be used to assist in the break up of the fat or calcium plaque. (thefreedictionary.com)
  • Excimer coronary laser atherectomy (ECLA) has been shown to be both well tolerated and effective for plaque modification. (readbyqxmd.com)
  • Balloon angioplasty is a medical technique used to widen coronary (heart) arteries that have been narrowed by plaque (fatty material) deposits that cling to the inside of the artery walls. (encyclopedia.com)
  • once there, a laser at the tip of the tube sends pulsating beams of light to vaporize the plaque. (heart.org)
  • A laser is used to dissolve or vaporize plaque. (daviddarling.info)
  • The purpose of angioplasty is to widen the coronary arteries of the heart that have been narrowed or completely blocked by plaque build-up or a blood clot. (yourmedicalsource.com)
  • Specifically which angioplasty technique the cardiologist uses depends on where the narrowing is, how it is shaped, and whether it is made of hard or soft plaque. (yourmedicalsource.com)
  • If it is teamed up with balloon angioplasty, with the balloon inserted first to attack the hard plaque. (yourmedicalsource.com)
  • The laser angioplasty , on the other hand, threads a small cable into the artery and emits a cool laser that breaks down the plaque. (toptenz.net)
  • The laser vaporizes plaque in an artery. (ahealthyme.com)
  • Atherectomy-The plaque is removed using a rotating shaver or laser. (epnet.com)
  • Balloon angioplasty opens the arteries that have been narrowed by built-up plaque (atherosclerosis) along the artery walls. (mcall.com)
  • However, balloon angioplasty can be used only if there is an adequate opening that allows passages of the balloon inside the plaque. (springer.com)
  • uses laser energy to destroy plaque. (yourmedicalsource.com)
  • Also known as Percutaneous Coronary Interventions [PCI], Balloon Angioplasty and Coronary Artery Balloon Dilation. (heart.org)
  • Angioplasty has come to include all manner of vascular interventions typically performed in a minimally invasive or percutaneous method. (wikidoc.org)
  • 2. The angioplasty system of claim 1 wherein each of said fiber-optic waveguides has a diameter no greater than about 200 microns. (google.com)
  • 3. The angioplasty system of claim 1 wherein the energy-conducting core of each waveguide is surrounded by cladding that is made of glass material. (google.com)
  • 4. The angioplasty system of claim 1 wherein the core of each of said waveguides is doped with fluorine. (google.com)
  • 5. The angioplasty system of claim 1 wherein each pulse of said laser energy comprises a sequence of time shifted subpulses. (google.com)
  • 6. The angioplasty system of claim 1 wherein the core of each of said waveguides is doped with an OH - radical. (google.com)
  • 9. An apparatus according to claim 1, wherein the light scattering particles are selected from the group consisting of: diamond particles, sapphire particles, quartz particles, single crystal zirconium oxide particles, particles of transmissible and heat resistant synthetic resins, laser light reflective metal particles, and particles on which laser light reflective metals have been coated. (google.com.au)
  • 2. The angioplasty device of claim 1 wherein said operative member is a balloon. (freepatentsonline.com)
  • Aim: The study objective was to examine the application of excimer laser atherectomy (ELA) in patients with refractory occlusions in femoropopliteal arteries, where the initial conventional percutaneous transluminal angioplasty (PTA) recanalization attempts, were unsuccessful. (minervamedica.it)
  • Laser recanalization was introduced and developed in Britain in the 1980s in an attempt to deal with the limitations associated with the conventional technique of percutaneous transluminal angioplasty (PTA). (kingston.ac.uk)
  • Laser angioplasty has been reported as a debulking tool in highly calcified stenosis and in chronic total occlusions followed by a conventional balloon angioplasty/stenting. (aihta.at)
  • IMSEAR at SEARO: Acute and follow-up results of laser angioplasty: single center experience. (who.int)
  • IMSEAR at SEARO: YAG laser angioplasty in lower extremity: sole therapy as well as adjunct to balloon dilatation. (who.int)
  • Note: Current coding rules state that when angioplasty and stent procedures are performed concurrently, and individual codes are available for the angioplasty and stent, only the code for the stent insertion is required. (nice.org.uk)
  • Angioplasty procedures are performed on hospital inpatients in facilities for proper monitoring and recovery. (thefreedictionary.com)
  • More than 1 million angioplasty procedures are performed each year worldwide. (yourmedicalsource.com)
  • Early metabolic response to acute myocardial ischaemia in patients undergoing elective coronary angioplasty. (nih.gov)
  • The study aims to compare the impact of non-mechanical excimer laser-assisted (EXCIMER) and femtosecond laser-assisted (FEMTO) trephinations on graft endothelial cell density (ECD) and graft thickness. (bioportfolio.com)
  • Minimal lumen diameter before excimer laser-assisted balloon angioplasty and balloon angioplasty alone were (mean ± SD) 0.73 ± 0.44 and 0.74 ± 0.43 mm, respectively. (onlinejacc.org)
  • 18. Laser Recanalization and Treatment of Peripheral Atherosclerosis: A Vascular Surgeon's Perspective. (booktopia.com.au)
  • A detailed description of available to the clinician and the researcher, laser recanalization techniques is presented for which often makes the choice of a laser system the various systems in the clinical setting. (booktopia.com.au)
  • The Spectranetics Corporation was founded in the 1980s on excimer laser technology and today markets the only Excimer Laser System approved in the United States, Canada, Europe and Japan for use in minimally invasive interventional procedures within the cardiovascular system. (medicalproductguide.com)