Removal of tissue with electrical current delivered via electrodes positioned at the distal end of a catheter. Energy sources are commonly direct current (DC-shock) or alternating current at radiofrequencies (usually 750 kHz). The technique is used most often to ablate the AV junction and/or accessory pathways in order to interrupt AV conduction and produce AV block in the treatment of various tachyarrhythmias.
Catheters designed to be left within an organ or passage for an extended period of time.
Abnormal cardiac rhythm that is characterized by rapid, uncoordinated firing of electrical impulses in the upper chambers of the heart (HEART ATRIA). In such case, blood cannot be effectively pumped into the lower chambers of the heart (HEART VENTRICLES). It is caused by abnormal impulse generation.
Methods to induce and measure electrical activities at specific sites in the heart to diagnose and treat problems with the heart's electrical system.
A generic expression for any tachycardia that originates above the BUNDLE OF HIS.
A flexible, tubular device that is used to carry fluids into or from a blood vessel, hollow organ, or body cavity.
A form of ventricular pre-excitation characterized by a short PR interval and a long QRS interval with a delta wave. In this syndrome, atrial impulses are abnormally conducted to the HEART VENTRICLES via an ACCESSORY CONDUCTING PATHWAY that is located between the wall of the right or left atria and the ventricles, also known as a BUNDLE OF KENT. The inherited form can be caused by mutation of PRKAG2 gene encoding a gamma-2 regulatory subunit of AMP-activated protein kinase.
The veins that return the oxygenated blood from the lungs to the left atrium of the heart.
Abnormally rapid heartbeats caused by reentry of atrial impulse into the dual (fast and slow) pathways of ATRIOVENTRICULAR NODE. The common type involves a blocked atrial impulse in the slow pathway which reenters the fast pathway in a retrograde direction and simultaneously conducts to the atria and the ventricles leading to rapid HEART RATE of 150-250 beats per minute.
Abnormally rapid heartbeats originating from one or more automatic foci (nonsinus pacemakers) in the HEART ATRIUM but away from the SINOATRIAL NODE. Unlike the reentry mechanism, automatic tachycardia speeds up and slows down gradually. The episode is characterized by a HEART RATE between 135 to less than 200 beats per minute and lasting 30 seconds or longer.
Recording of regional electrophysiological information by analysis of surface potentials to give a complete picture of the effects of the currents from the heart on the body surface. It has been applied to the diagnosis of old inferior myocardial infarction, localization of the bypass pathway in Wolff-Parkinson-White syndrome, recognition of ventricular hypertrophy, estimation of the size of a myocardial infarct, and the effects of different interventions designed to reduce infarct size. The limiting factor at present is the complexity of the recording and analysis, which requires 100 or more electrodes, sophisticated instrumentation, and dedicated personnel. (Braunwald, Heart Disease, 4th ed)
Rapid, irregular atrial contractions caused by a block of electrical impulse conduction in the right atrium and a reentrant wave front traveling up the inter-atrial septum and down the right atrial free wall or vice versa. Unlike ATRIAL FIBRILLATION which is caused by abnormal impulse generation, typical atrial flutter is caused by abnormal impulse conduction. As in atrial fibrillation, patients with atrial flutter cannot effectively pump blood into the lower chambers of the heart (HEART VENTRICLES).
An abnormally rapid ventricular rhythm usually in excess of 150 beats per minute. It is generated within the ventricle below the BUNDLE OF HIS, either as autonomic impulse formation or reentrant impulse conduction. Depending on the etiology, onset of ventricular tachycardia can be paroxysmal (sudden) or nonparoxysmal, its wide QRS complexes can be uniform or polymorphic, and the ventricular beating may be independent of the atrial beating (AV dissociation).
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.
An impulse-conducting system composed of modified cardiac muscle, having the power of spontaneous rhythmicity and conduction more highly developed than the rest of the heart.
A small nodular mass of specialized muscle fibers located in the interatrial septum near the opening of the coronary sinus. It gives rise to the atrioventricular bundle of the conduction system of the heart.
The chambers of the heart, to which the BLOOD returns from the circulation.
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.
Production of an image when x-rays strike a fluorescent screen.
Catheters inserted into various locations within the heart for diagnostic or therapeutic purposes.
A type of cardiac arrhythmia with premature contractions of the HEART VENTRICLES. It is characterized by the premature QRS complex on ECG that is of abnormal shape and great duration (generally >129 msec). It is the most common form of all cardiac arrhythmias. Premature ventricular complexes have no clinical significance except in concurrence with heart diseases.
The return of a sign, symptom, or disease after a remission.
Removal of tissue by vaporization, abrasion, or destruction. Methods used include heating tissue by hot liquids or microwave thermal heating, freezing (CRYOABLATION), chemical ablation, and photoablation with LASERS.
Abnormally rapid heartbeats with sudden onset and cessation.
Extra impulse-conducting tissue in the heart that creates abnormal impulse-conducting connections between HEART ATRIA and HEART VENTRICLES.
Abnormally rapid heartbeats caused by reentry circuit in or around the SINOATRIAL NODE. It is characterized by sudden onset and offset episodes of tachycardia with a HEART RATE of 100-150 beats per minute. The P wave is identical to the sinus P wave but with a longer PR interval.
Abnormally rapid heartbeat, usually with a HEART RATE above 100 beats per minute for adults. Tachycardia accompanied by disturbance in the cardiac depolarization (cardiac arrhythmia) is called tachyarrhythmia.
Procedures using an electrically heated wire or scalpel to treat hemorrhage (e.g., bleeding ulcers) and to ablate tumors, mucosal lesions, and refractory arrhythmias. It is different from ELECTROSURGERY which is used more for cutting tissue than destroying and in which the patient is part of the electric circuit.
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.
Surgical procedures conducted with the aid of computers. This is most frequently used in orthopedic and laparoscopic surgery for implant placement and instrument guidance. Image-guided surgery interactively combines prior CT scans or MRI images with real-time video.
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.
The use of freezing as a special surgical technique to destroy or excise tissue.
Agents used for the treatment or prevention of cardiac arrhythmias. They may affect the polarization-repolarization phase of the action potential, its excitability or refractoriness, or impulse conduction or membrane responsiveness within cardiac fibers. Anti-arrhythmia agents are often classed into four main groups according to their mechanism of action: sodium channel blockade, beta-adrenergic blockade, repolarization prolongation, or calcium channel blockade.
Recording the locations and measurements of electrical activity in the EPICARDIUM by placing electrodes on the surface of the heart to analyze the patterns of activation and to locate arrhythmogenic sites.
Regulation of the rate of contraction of the heart muscles by an artificial pacemaker.
Small band of specialized CARDIAC MUSCLE fibers that originates in the ATRIOVENTRICULAR NODE and extends into the membranous part of the interventricular septum. The bundle of His, consisting of the left and the right bundle branches, conducts the electrical impulses to the HEART VENTRICLES in generation of MYOCARDIAL CONTRACTION.
A form of ventricular pre-excitation characterized by a normal PR interval and a long QRS interval with an initial slow deflection (delta wave). In this syndrome, the atrial impulse travel to the ventricle via the MAHAIM FIBERS which connect ATRIOVENTRICULAR NODE directly to the right ventricle wall (NODOVENTRICULAR ACCESSORY PATHWAY) or to the RIGHT BUNDLE BRANCH OF HIS (nodofascicular accessory pathway).
The valve consisting of three cusps situated between the right atrium and right ventricle of the heart.
Placement of an intravenous CATHETER in the subclavian, jugular, or other central vein.
Any disturbances of the normal rhythmic beating of the heart or MYOCARDIAL CONTRACTION. Cardiac arrhythmias can be classified by the abnormalities in HEART RATE, disorders of electrical impulse generation, or impulse conduction.
A rare form of supraventricular tachycardia caused by automatic, not reentrant, conduction initiated from sites at the atrioventricular junction, but not the ATRIOVENTRICULAR NODE. It usually occurs during myocardial infarction, after heart surgery, or in digitalis intoxication with a HEART RATE ranging from 140 to 250 beats per minute.
A conical fibro-serous sac surrounding the HEART and the roots of the great vessels (AORTA; VENAE CAVAE; PULMONARY ARTERY). Pericardium consists of two sacs: the outer fibrous pericardium and the inner serous pericardium. The latter consists of an outer parietal layer facing the fibrous pericardium, and an inner visceral layer (epicardium) resting next to the heart, and a pericardial cavity between these two layers.
Electromagnetic waves with frequencies between about 3 kilohertz (very low frequency - VLF) and 300,000 megahertz (extremely high frequency - EHF). They are used in television and radio broadcasting, land and satellite communications systems, radionavigation, radiolocation, and DIATHERMY. The highest frequency radio waves are MICROWAVES.
Pathological process resulting in the fibrous obstruction of the small- and medium-sized PULMONARY VEINS and PULMONARY HYPERTENSION. Veno-occlusion can arise from fibrous proliferation of the VASCULAR INTIMA and VASCULAR MEDIA; THROMBOSIS; or a combination of both.
The innermost layer of the heart, comprised of endothelial cells.
Elements of limited time intervals, contributing to particular results or situations.
Methods of creating machines and devices.
Diagnostic and therapeutic procedures that are invasive or surgical in nature, and require the expertise of a specially trained radiologist. In general, they are more invasive than diagnostic imaging but less invasive than major surgery. They often involve catheterization, fluoroscopy, or computed tomography. Some examples include percutaneous transhepatic cholangiography, percutaneous transthoracic biopsy, balloon angioplasty, and arterial embolization.
A short vein that collects about two thirds of the venous blood from the MYOCARDIUM and drains into the RIGHT ATRIUM. Coronary sinus, normally located between the LEFT ATRIUM and LEFT VENTRICLE on the posterior surface of the heart, can serve as an anatomical reference for cardiac procedures.
Impaired conduction of cardiac impulse that can occur anywhere along the conduction pathway, such as between the SINOATRIAL NODE and the right atrium (SA block) or between atria and ventricles (AV block). Heart blocks can be classified by the duration, frequency, or completeness of conduction block. Reversibility depends on the degree of structural or functional defects.
This structure includes the thin muscular atrial septum between the two HEART ATRIA, and the thick muscular ventricular septum between the two HEART VENTRICLES.
Method in which prolonged electrocardiographic recordings are made on a portable tape recorder (Holter-type system) or solid-state device ("real-time" system), while the patient undergoes normal daily activities. It is useful in the diagnosis and management of intermittent cardiac arrhythmias and transient myocardial ischemia.
Procedures in which placement of CARDIAC CATHETERS is performed for therapeutic or diagnostic procedures.
Studies to determine the advantages or disadvantages, practicability, or capability of accomplishing a projected plan, study, or project.
The hemodynamic and electrophysiological action of the LEFT ATRIUM.
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.
Simple rapid heartbeats caused by rapid discharge of impulses from the SINOATRIAL NODE, usually between 100 and 180 beats/min in adults. It is characterized by a gradual onset and termination. Sinus tachycardia is common in infants, young children, and adults during strenuous physical activities.
The hemodynamic and electrophysiological action of the RIGHT ATRIUM.
Catheters that are inserted into a large central vein such as a SUBCLAVIAN VEIN or FEMORAL VEIN.
The study of the generation and behavior of electrical charges in living organisms particularly the nervous system and the effects of electricity on living organisms.
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.
A type of cardiac arrhythmia with premature atrial contractions or beats caused by signals originating from ectopic atrial sites. The ectopic signals may or may not conduct to the HEART VENTRICLES. Atrial premature complexes are characterized by premature P waves on ECG which are different in configuration from the P waves generated by the normal pacemaker complex in the SINOATRIAL NODE.
Abnormal passage communicating with the ESOPHAGUS. The most common type is TRACHEOESOPHAGEAL FISTULA between the esophagus and the TRACHEA.
A group of cardiac arrhythmias in which the cardiac contractions are not initiated at the SINOATRIAL NODE. They include both atrial and ventricular premature beats, and are also known as extra or ectopic heartbeats. Their frequency is increased in heart diseases.
A vein which arises from the right ascending lumbar vein or the vena cava, enters the thorax through the aortic orifice in the diaphragm, and terminates in the superior vena cava.
Electric conductors through which electric currents enter or leave a medium, whether it be an electrolytic solution, solid, molten mass, gas, or vacuum.
Ear-shaped appendage of either atrium of the heart. (Dorland, 28th ed)
Insertion of a catheter into a peripheral artery, vein, or airway for diagnostic or therapeutic purposes.
The washing of a body cavity or surface by flowing water or solution for therapy or diagnosis.
Passage of a CATHETER into the URINARY BLADDER or kidney.
The thin membrane-like muscular structure separating the right and the left upper chambers (HEART ATRIA) of a heart.
General or unspecified injuries to the heart.
The fibrous tissue that replaces normal tissue during the process of WOUND HEALING.
Ultrasonic recording of the size, motion, and composition of the heart and surrounding tissues using a transducer placed in the esophagus.
The lower right and left chambers of the heart. The right ventricle pumps venous BLOOD into the LUNGS and the left ventricle pumps oxygenated blood into the systemic arterial circulation.
The venous trunk which returns blood from the head, neck, upper extremities and chest.
Visualization of the heart structure and cardiac blood flow for diagnostic evaluation or to guide cardiac procedures via techniques including ENDOSCOPY (cardiac endoscopy, sometimes refered to as cardioscopy), RADIONUCLIDE IMAGING; MAGNETIC RESONANCE IMAGING; TOMOGRAPHY; or ULTRASONOGRAPHY.
The study of the electrical activity and characteristics of the HEART; MYOCARDIUM; and CARDIOMYOCYTES.
Burns produced by contact with electric current or from a sudden discharge of electricity.
The process of generating three-dimensional images by electronic, photographic, or other methods. For example, three-dimensional images can be generated by assembling multiple tomographic images with the aid of a computer, while photographic 3-D images (HOLOGRAPHY) can be made by exposing film to the interference pattern created when two laser light sources shine on an object.
A congenital heart defect characterized by downward or apical displacement of the TRICUSPID VALVE, usually with the septal and posterior leaflets being attached to the wall of the RIGHT VENTRICLE. It is characterized by a huge RIGHT ATRIUM and a small and less effective right ventricle.
Catheters inserted into the URINARY BLADDER or kidney for therapeutic or diagnostic purposes.
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.
An electrical current applied to the HEART to terminate a disturbance of its rhythm, ARRHYTHMIAS, CARDIAC. (Stedman, 25th ed)
Failure of equipment to perform to standard. The failure may be due to defects or improper use.
The muscular structure separating the right and the left lower chambers (HEART VENTRICLES) of the heart. The ventricular septum consists of a very small membranous portion just beneath the AORTIC VALVE, and a large thick muscular portion consisting of three sections including the inlet septum, the trabecular septum, and the outlet septum.
The dilatation of the aortic wall behind each of the cusps of the aortic valve.
The small mass of modified cardiac muscle fibers located at the junction of the superior vena cava (VENA CAVA, SUPERIOR) and right atrium. Contraction impulses probably start in this node, spread over the atrium (HEART ATRIUM) and are then transmitted by the atrioventricular bundle (BUNDLE OF HIS) to the ventricle (HEART VENTRICLE).
The venous trunk which receives blood from the lower extremities and from the pelvic and abdominal organs.
Ultrasonic recording of the size, motion, and composition of the heart and surrounding tissues. The standard approach is transthoracic.
A group of conditions in which HEART VENTRICLE activation by the atrial impulse is faster than the normal impulse conduction from the SINOATRIAL NODE. In these pre-excitation syndromes, atrial impulses often bypass the ATRIOVENTRICULAR NODE delay and travel via ACCESSORY CONDUCTING PATHWAYS connecting the atrium directly to the BUNDLE OF HIS.
A potentially lethal cardiac arrhythmia that is characterized by uncoordinated extremely rapid firing of electrical impulses (400-600/min) in HEART VENTRICLES. Such asynchronous ventricular quivering or fibrillation prevents any effective cardiac output and results in unconsciousness (SYNCOPE). It is one of the major electrocardiographic patterns seen with CARDIAC ARREST.
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.
A device designed to stimulate, by electric impulses, contraction of the heart muscles. It may be temporary (external) or permanent (internal or internal-external).
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.
Agents that prevent clotting.
Infections resulting from the use of catheters. Proper aseptic technique, site of catheter placement, material composition, and virulence of the organism are all factors that can influence possible infection.
A repeat operation for the same condition in the same patient due to disease progression or recurrence, or as followup to failed previous surgery.
Implantable devices which continuously monitor the electrical activity of the heart and automatically detect and terminate ventricular tachycardia (TACHYCARDIA, VENTRICULAR) and VENTRICULAR FIBRILLATION. They consist of an impulse generator, batteries, and electrodes.
Impaired impulse conduction from HEART ATRIA to HEART VENTRICLES. AV block can mean delayed or completely blocked impulse conduction.
Pathological conditions involving the HEART including its structural and functional abnormalities.
Compression of the heart by accumulated fluid (PERICARDIAL EFFUSION) or blood (HEMOPERICARDIUM) in the PERICARDIUM surrounding the heart. The affected cardiac functions and CARDIAC OUTPUT can range from minimal to total hemodynamic collapse.
Surgery performed on the heart.
The use of focused, high-frequency sound waves to destroy tissue. It is sometimes used in conjunction with but is distinct from INTERVENTIONAL ULTRASONOGRAPHY.
Incision of tissues for injection of medication or for other diagnostic or therapeutic procedures. Punctures of the skin, for example may be used for diagnostic drainage; of blood vessels for diagnostic imaging procedures.
The application of electronic, computerized control systems to mechanical devices designed to perform human functions. Formerly restricted to industry, but nowadays applied to artificial organs controlled by bionic (bioelectronic) devices, like automated insulin pumps and other prostheses.
The valve between the left atrium and left ventricle of the heart.
A group of diseases in which the dominant feature is the involvement of the CARDIAC MUSCLE itself. Cardiomyopathies are classified according to their predominant pathophysiological features (DILATED CARDIOMYOPATHY; HYPERTROPHIC CARDIOMYOPATHY; RESTRICTIVE CARDIOMYOPATHY) or their etiological/pathological factors (CARDIOMYOPATHY, ALCOHOLIC; ENDOCARDIAL FIBROELASTOSIS).
Fluid accumulation within the PERICARDIUM. Serous effusions are associated with pericardial diseases. Hemopericardium is associated with trauma. Lipid-containing effusion (chylopericardium) results from leakage of THORACIC DUCT. Severe cases can lead to CARDIAC TAMPONADE.
The hemodynamic and electrophysiological action of the HEART ATRIA.
The constant checking on the state or condition of a patient during the course of a surgical operation (e.g., checking of vital signs).
Obstruction of a blood vessel (embolism) by a blood clot (THROMBUS) in the blood stream.
A congenital defect in which the heart is located on the right side of the THORAX instead of on the left side (levocardia, the normal position). When dextrocardia is accompanied with inverted HEART ATRIA, a right-sided STOMACH, and a left-sided LIVER, the combination is called dextrocardia with SITUS INVERSUS. Dextrocardia may adversely affect other thoracic organs.
Tomography using x-ray transmission and a computer algorithm to reconstruct the image.
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)
A beta-2 adrenergic agonist used in the treatment of ASTHMA and BRONCHIAL SPASM.
A congenital cardiomyopathy that is characterized by infiltration of adipose and fibrous tissue into the RIGHT VENTRICLE wall and loss of myocardial cells. Primary injuries usually are at the free wall of right ventricular and right atria resulting in ventricular and supraventricular arrhythmias.
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.
The use of a device composed of thermoluminescent material for measuring exposure to IONIZING RADIATION. The thermoluminescent material emits light when heated. The amount of light emitted is proportional to the amount of ionizing radiation to which the material has been exposed.
Also called xiphoid process, it is the smallest and most inferior triangular protrusion of the STERNUM or breastbone that extends into the center of the ribcage.
A form of heart block in which the electrical stimulation of HEART VENTRICLES is interrupted at either one of the branches of BUNDLE OF HIS thus preventing the simultaneous depolarization of the two ventricles.
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.
The study of MAGNETIC PHENOMENA.
The domestic dog, Canis familiaris, comprising about 400 breeds, of the carnivore family CANIDAE. They are worldwide in distribution and live in association with people. (Walker's Mammals of the World, 5th ed, p1065)
A congenital abnormality in which organs in the THORAX and the ABDOMEN are opposite to their normal positions (situs solitus) due to lateral transposition. Normally the STOMACH and SPLEEN are on the left, LIVER on the right, the three-lobed right lung is on the right, and the two-lobed left lung on the left. Situs inversus has a familial pattern and has been associated with a number of genes related to microtubule-associated proteins.
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.
Nerves and plexuses of the autonomic nervous system. The central nervous system structures which regulate the autonomic nervous system are not included.
The number of times the HEART VENTRICLES contract per unit of time, usually per minute.
The use of photothermal effects of LASERS to coagulate, incise, vaporize, resect, dissect, or resurface tissue.
Long-term changes in the electrophysiological parameters and/or anatomical structures of the HEART ATRIA that result from prolonged changes in atrial rate, often associated with ATRIAL FIBRILLATION or long periods of intense EXERCISE.
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.
Radiographic visualization or recording of a vein after the injection of contrast medium.
An anticoagulant that acts by inhibiting the synthesis of vitamin K-dependent coagulation factors. Warfarin is indicated for the prophylaxis and/or treatment of venous thrombosis and its extension, pulmonary embolism, and atrial fibrillation with embolization. It is also used as an adjunct in the prophylaxis of systemic embolism after myocardial infarction. Warfarin is also used as a rodenticide.
Occlusion of the outflow tract in either the LEFT VENTRICLE or the RIGHT VENTRICLE of the heart. This may result from CONGENITAL HEART DEFECTS, predisposing heart diseases, complications of surgery, or HEART NEOPLASMS.
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)
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 condition of an anatomical structure's being constricted beyond normal dimensions.
Migration of a foreign body from its original location to some other location in the body.

Frequency and long term follow up of valvar insufficiency caused by retrograde aortic radiofrequency catheter ablation procedures. (1/3420)

OBJECTIVE: To assess the frequency of valvar complications caused by left sided radiofrequency catheter ablation using the retrograde aortic technique. METHODS: 179 patients (118 male) with a mean (SD) age of 43 (17) years underwent 216 procedures at one centre. The target of the ablation was an accessory atrioventricular pathway in 144 patients, the atrioventricular junction in 29 patients, and a ventricular tachycardia in six patients. In 25 patients structural heart disease was identified before the procedure (ischaemic heart disease 10, cardiomyopathy nine, valvar three, other three). Echo/Doppler examinations were performed the day before the procedure and within 24 hours postablation; the investigations were all reviewed by the same investigator. Patients with identified valvar injury caused by the procedure were followed for 42 (7) months. RESULTS: Valvar injury caused by the ablation procedure was identified in four young (age 30 (8) years), otherwise healthy patients with left lateral atrioventricular accessory pathways. Mild mitral insufficiency with a central regurgitation jet was detected in two patients and remained unchanged at follow up. Mild aortic insufficiency was detected in another two patients. In one of these the regurgitation jet was central and remained unchanged at follow up. In one patient the regurgitation jet was located between the non-coronary and left cusps in relation to a loosely attached structure. Both the structure and the valvar regurgitation disappeared during follow up. No clinical complications occurred in any of the patients during follow up. CONCLUSION: In this study, the frequency of valvar complications after left sided radiofrequency catheter ablation using the retrograde aortic technique was 1.9%.  (+info)

AV reentrant and idiopathic ventricular double tachycardias: complicated interactions between two tachycardias. (2/3420)

An electrophysiological study was performed in a 61 year old man with Wolff- Parkinson-White (WPW) syndrome. At baseline, neither ventricular nor supraventricular tachycardias could be induced. During isoprenaline infusion, ventricular tachycardia originating from the right ventricular outflow tract (RVOT) with a cycle length of 280 ms was induced and subsequently atrioventricular reentrant tachycardia (AVRT) with a cycle length of 300 ms using an accessory pathway in the left free wall appeared. During these tachycardias, AVRT was entrained by ventricular tachycardia. The earliest ventricular activation site during the ventricular tachycardia was determined to be the RVOT site and a radiofrequency current at 30 W successfully ablated the ventricular tachycardia at this site. The left free wall accessory pathway was also successfully ablated during right ventricular pacing. The coexistence of WPW syndrome and cathecolamine sensitive ventricular tachycardia originating from the RVOT has rarely been reported. Furthermore, the tachycardias were triggered by previous tachycardias.  (+info)

Tachycardia induced tachycardia: case report of right ventricular outflow tract tachycardia and AV nodal reentrant tachycardia. (3/3420)

Tachycardia induced tachycardia, or so called double tachycardia, is rare. A 34 year old woman is described who had a history of syncope, frequent extrasystoles, and episodes of non-sustained ventricular tachycardia, perceived as palpitation, without syncope. At electrophysiological study, during infusion of isoprenaline, an episode of non-sustained ventricular tachycardia arising from the right ventricular outflow tract initiated sustained atrioventricular nodal reentrant tachycardia, thought to be the cause of the patient's syncope. Ablation of the right ventricular outflow tract focus abolished the ventricular ectopy; the slow AV nodal pathway was also ablated. The patient no longer has either syncope or palpitation.  (+info)

Clinical application of an integrated 3-phase mapping technique for localization of the site of origin of idiopathic ventricular tachycardia. (4/3420)

BACKGROUND: Radiofrequency (RF) catheter ablation provides curative treatment for idiopathic ventricular tachycardia (VT). METHODS AND RESULTS: Nineteen consecutive patients with an idiopathic VT underwent RF catheter ablation. An integrated 3-phase mapping approach was used, consisting of the successive application of online 62-lead body surface QRS integral mapping, directed regional paced body surface QRS integral mapping, and local activation sequence mapping. Mapping phase 1 was localization of the segment of VT origin by comparing the VT QRS integral map with a database of mean paced QRS integral maps. Mapping phase 2 was body surface pace mapping during sinus rhythm in the segment localized in phase 1 until the site at which the paced QRS integral map matched the VT QRS integral map was identified (ie, VT exit site). Mapping phase 3 was local activation sequence mapping at the circumscribed area identified in phase 2 to identify the site with the earliest local endocardial activation (ie, site of VT origin). This site became the ablation target. Ten VTs were ablated in the right ventricular outflow tract, 2 at the basal LV septum, and 7 at the midapical posterior left ventricle. A high long-term ablation success (mean follow-up duration, 14+/-9 months) was achieved in 17 of the 19 patients (89%) with a low number of RF pulses (mean, 3.3+/-2.2 pulses per patient). CONCLUSIONS: This prospective study shows that integrated 3-phase mapping for localization of the site of origin of idiopathic VT offers efficient and accurate localization of the target site for RF catheter ablation.  (+info)

LocaLisa: new technique for real-time 3-dimensional localization of regular intracardiac electrodes. (5/3420)

BACKGROUND: Estimation of the 3-dimensional (3D) position of ablation electrodes from fluoroscopic images is inadequate if a systematic lesion pattern is required in the treatment of complex arrhythmogenic substrates. METHODS AND RESULTS: We developed a new technique for online 3D localization of intracardiac electrodes. Regular catheter electrodes are used as sensors for a high-frequency transthoracic electrical field, which is applied via standard skin electrodes. We investigated localization accuracy within the right atrium, right ventricle, and left ventricle by comparing measured and true interelectrode distances of a decapolar catheter. Long-term stability was analyzed by localization of the most proximal His bundle before and after slow pathway ablation. Electrogram recordings were unaffected by the applied electrical field. Localization data from 3 catheter positions, widely distributed within the right atrium, right ventricle, or left ventricle, were analyzed in 10 patients per group. The relationship between measured and true electrode positions was highly linear, with an average correlation coefficient of 0.996, 0.997, and 0.999 for the right atrium, right ventricle, and left ventricle, respectively. Localization accuracy was better than 2 mm, with an additional scaling error of 8% to 14%. After 2 hours, localization of the proximal His bundle was reproducible within 1.4+/-1.1 mm. CONCLUSIONS: This new technique enables accurate and reproducible real-time localization of electrode positions in cardiac mapping and ablation procedures. Its application does not distort the quality of electrograms and can be applied to any electrode catheter.  (+info)

Atrioventricular nodal ablation and implantation of mode switching dual chamber pacemakers: effective treatment for drug refractory paroxysmal atrial fibrillation. (6/3420)

OBJECTIVE: To assess the effect of atrioventricular node ablation and implantation of a dual chamber, mode switching pacemaker on quality of life, exercise capacity, and left ventricular systolic function in patients with drug refractory paroxysmal atrial fibrillation. PATIENTS: 18 consecutive patients with drug refractory paroxysmal atrial fibrillation. METHODS: Quality of life was assessed before and after the procedure using the psychological general wellbeing index (PGWB), the McMaster health index (MHI), and a visual analogue scale for cardiac symptoms. Nine of the patients also underwent symptom limited exercise tests and echocardiography to assess left ventricular systolic function. RESULTS: The procedure allowed a reduction in antiarrhythmic drug treatment (p < 0.01). PGWB and symptom scores improved (p < 0.01) but the MHI score did not change. Left ventricular systolic function and exercise capacity were unchanged. CONCLUSIONS: Atrioventricular node ablation and implantation of a DDDR/MS pacemaker is effective treatment for refractory paroxysmal atrial fibrillation, producing improved quality of life while allowing a reduction in drug burden. The popularity of the treatment is justified, but further studies are needed to determine optimum timing of intervention.  (+info)

Predictors of atrial rhythm after atrioventricular node ablation for the treatment of paroxysmal atrial arrhythmias. (7/3420)

OBJECTIVE: To assess the natural history of the atrial rhythm of patients with paroxysmal atrial arrhythmias undergoing atrioventricular node ablation and permanent pacemaker implantation. DESIGN AND SETTING: A retrospective cohort study of consecutive patients identified from the pacemaker database and electrophysiology records of a tertiary referral hospital. PATIENTS: 62 consecutive patients with paroxysmal atrial arrhythmias undergoing atrioventricular node ablation and permanent pacemaker implantation between 1988 and July 1996. MAIN OUTCOME MEASURES: (1) Atrial rhythm on final follow up ECG, classified as either ordered (sinus rhythm or atrial pacing) or disordered (atrial fibrillation, atrial flutter or atrial tachycardia). (2) Chronic atrial fibrillation, defined as a disordered rhythm on two consecutive ECGs (or throughout a 24 hour Holter recording) with no ordered rhythm subsequently documented. RESULTS: Survival analysis showed that 75% of patients progressed to chronic atrial fibrillation by 2584 days (86 months). On multiple logistic regression analysis a history of electrical cardioversion, increasing patient age, and VVI pacing were associated with the development of chronic atrial fibrillation. A history of electrical cardioversion and increasing patient age were associated with a disordered atrial rhythm on the final follow up ECG. CONCLUSIONS: Patients with paroxysmal atrial arrhythmias are at high risk of developing chronic atrial fibrillation. A history of direct current cardioversion.  (+info)

Recovery pattern of left ventricular dysfunction following radiofrequency ablation of incessant supraventricular tachycardia in infants and children. (8/3420)

OBJECTIVE: To assess recovery pattern of left ventricular function secondary to incessant tachycardia after radiofrequency ablation in a group of infants and children. DESIGN AND SETTING: A combined prospective and retrospective echocardiographic study carried out in a tertiary paediatric cardiac centre. PATIENTS: Echocardiographic evaluation of left ventricular size and function in nine children with incessant tachycardia, before and after successful radiofrequency ablation. Age at ablation ranged from 2 months to 12.5 years (mean 4.1 years). Recovery of left ventricular function was analysed in relation to age at ablation (group I < 18 months, group II > 18 months). MAIN OUTCOME MEASURE: Ventricular recovery pattern. RESULTS: Seven of the nine children had left ventricular dysfunction; six of these also had left ventricular dilatation. All children with left ventricular dysfunction had normalisation of ejection fraction and fractional shortening; left ventricular dilatation also improved, but the improvement occurred after recovery of function. There was a shorter recovery time for left ventricular function in younger (group I) than in older children (group II) (mean (SD) 5.7 (7.2) months v 31.3 (5.2) (p < 0.002). CONCLUSIONS: Tachycardia induced cardiomyopathy is reversible following curative treatment with radiofrequency. Recovery of left ventricular systolic function precedes recovery of left ventricular dilatation. Time course to recovery is shorter in younger children.  (+info)

Damage to the coronary artery is a rare but important complication following radiofrequency catheter ablation. This case report describes the management of circumflex artery occlusion following mitral isthmus ablation in a 62-year-old male. It also provides a brief literature review and discusses the clinical implications of this complication.
INTENDED USE/INDICATIONS FOR USE. The Maestro 4000 Cardiac Ablation System is intended for use with BSC cardiac ablation catheters in cardiac ablation procedures.. Note: Refer to the individual catheter Directions for Use for catheter compatibility to the Maestro 4000 Cardiac Ablation System. It is also important to carefully review the specific indications, contraindications, warnings, precautions and adverse events included with each catheter, prior to use of the catheter with the Maestro 4000 Cardiac Ablation System.. CONTRAINDICATIONS. There are no specific contraindications for use of the Maestro 4000 Cardiac Ablation System itself. However, users should read and understand the specific indications, contraindications, warnings, and precautions included with any cardiac ablation catheter used in conjunction with the System.. Note: The contraindications listed in the catheter Directions For Use also apply to the use of the Maestro 4000 Cardiac Ablation System. Carefully review the specific ...
Successful Anesthetic Management for Surgical Repair of Atrio-Esophageal Fistula Following Radiofrequency Ablation for Atrial Fibrillation. . Biblioteca virtual para leer y descargar libros, documentos, trabajos y tesis universitarias en PDF. Material universiario, documentación y tareas realizadas por universitarios en nuestra biblioteca. Para descargar gratis y para leer online.
TY - JOUR. T1 - Liver abscess after percutaneous radiofrequency ablation for hepatocellular carcinomas. T2 - Frequency and risk factors. AU - Choi, Dongil. AU - Lim, Hyo K.. AU - Kim, Min Ju. AU - Kim, Suk Jung. AU - Kim, Seung Hoon. AU - Lee, Won Jae. AU - Lim, Jae Hoon. AU - Paik, Seung Woon. AU - Yoo, Byung Chul. AU - Choi, Moon Seok. AU - Kim, Seonwoo. PY - 2005/1/1. Y1 - 2005/1/1. N2 - OBJECTIVE. The purpose of this study was to clarify the frequency and risk factors of liver abscess formation after percutaneous radiofrequency ablation in patients with hepatocellular carcinoma. MATERIALS AND METHODS. Over a 4-year period, 603 patients with 831 hepatocellular carcinomas measuring 5 cm or less in maximum diameter who underwent a total of 751 percutaneous radiofrequency ablation procedures were enrolled in this study. We retrospectively reviewed the medical records and analyzed the overall frequency of liver abscess, risk factors for abscess, and clinical features of the patients. The ...
References: Symptomatic improvement after radiofrequency catheter ablation for typical atrial flutter; Heart 2001;86:167-171 Quality-of-Life in Patients With Paroxysmal Atrial Fibrillation After Catheter Ablation: Results of Long-Term Follow-Up; PACE 2003; 26:678-684 Quality of life restored to normal in patients with atrial fibrillation after pulmonary vein ostial Isolation; Am Heart J 2004;148:318-25 Effect of Left Atrial Ablation on the Quality of Life in Patients With Atrial Fibrillation; Circ J 2008; 72: 582-587 Catheter Ablation for Atrial Fibrillation in Congestive Heart Failure; N Engl J Med 2004;351:2373-83. Effects of Radiofrequency Catheter Ablation on Quality of Life in Patients With Atrial Flutter; Am J Cardiol 1999;84:278-283 Radiofrequency Catheter Ablation of Common Atrial Flutter : Significance of Palpitations and Quality-of-Life Evaluation in Patients With Proven Isthmus Block; Circulation 1999;99;534-540 Relationship Between Atrial Fibrillation and Typical Atrial Flutter in ...
Headline: Bitcoin & Blockchain Searches Exceed Trump! Blockchain Stocks Are Next!. The Ablation Technologies Market report covers detailed competitive outlook including the market share and company profiles of the key participants operating in the global market.. Worldwide Ablation Technologies Market 2022, presents critical information and factual data about the Ablation Technologies Market globally, providing an overall statistical study of the Ablation Technologies Market on the basis of market drivers, Ablation Technologies Market limitations, and its future prospects. The prevalent global Ablation Technologies trends and opportunities are also taken into consideration in Ablation Technologies Market study.. Global Ablation Technologies Market 2022 report has Forecasted Compound Annual Growth Rate (CAGR) in % value for particular period for Ablation Technologies Market, that will help user to take decision based on futuristic chart. Report also includes key players in global Ablation ...
Find the best radiofrequency catheter ablation doctors in Thane. Get guidance from medical experts to select radiofrequency catheter ablation specialist in Thane from trusted hospitals - credihealth.com
OBJECTIVE: To evaluate the indications, results and complications of radiofrequency catheter ablation in small infants with supraventricular tachycardia due to an accessory atrioventricular pathway. METHODS: Five infants less than 9 months old underwent radiofrequency catheter ablation of accessory pathways. Ablation was done for medically refractory tachyarrhythmia associated with aborted sudden death in two patients, left ventricular dysfunction in one, failure of antiarrhythmic drugs in one, and planned cardiac surgery in one. All five patients underwent a single successful procedure. Three left free wall pathways were ablated by transseptal approach, a right posteroseptal pathway was ablated from the inferior vena cava, and a left posteroseptal pathway was approached from the inferior vena cava into the coronary sinus. A deflectable 5F bipolar electrode catheter with a 3 mm tip was used. RESULTS: A sudden increment in impedance indicative of coagulum formation was observed in two procedures. ...
This report describes successful radiofrequency ablation of an accessory pathway in a situation with no identifiable AV valve ring. Mapping and ablation of accessory pathways are performed where they cross the fibrous AV valve ring, which provides purchase for the catheter and lessens the degree of myocardial injury. Precise localisation of a well defined AV ring may be a problem in patients with Ebsteins disease4 and possibly in patients with an unguarded tricuspid orifice.. Pulmonary atresia, intact ventricular septum with complete absence of tricuspid valve tissue, is an extremely rare lesion that was first described in a pathological specimen by Klein in 1938.7Anderson et al differentiates a true unguarded orifice from the much more common Ebsteins anomaly on the basis of presence or absence of the mural leaflet of the tricuspid valve.6The three necropsy cases they described all had a dilated right ventricle. Using echocardiography and angiography, further cases have been described usually ...
AIMS: Contact force (CF) between radiofrequency (RF) ablation catheter and myocardium and ablation index (AI) correlates with RF lesion depth and width in normal-voltage (,1.5 mV) myocardium (NVM). We investigate the impact of CF on RF lesion depth and width in low (,0.5 mV) (LVM) and intermediate-voltage (0.5-1.5 mV) myocardium (IVM) following myocardial infarction. Correlation between RF lesion depth and width evaluated by native contrast magnetic resonance imaging (ncMRI) and gross anatomical evaluation was investigated.. METHODS AND RESULTS: Twelve weeks after myocardial infarction, 10 pigs underwent electroanatomical mapping and endocardial RF ablations were deployed in NVM, IVM, and LVM myocardium. In vivo ncMRI was performed before the heart was excised and subjected to gross anatomical evaluation. Ninety (82%) RF lesions were evaluated. Radiofrequency lesion depth and width were smaller in IVM and LVM compared with NVM (P , 0.001). Radiofrequency lesion depth and width correlated with ...
Mitral isthmus ablation forms part of the electrophysiologists armoury in the catheter ablation treatment of atrial fibrillation. It is well recognised however, that mitral isthmus ablation is technically challenging and incomplete ablation may be pro-arrhythmic, leading some to question its role. This article first reviews the evidence for the use of adjunctive mitral isthmus ablation and its association with the development of macroreentrant perimitral flutter. It then describes the practical techniques of mitral isthmus ablation, with particular emphasis on the assessment of bi-directional mitral isthmus block. The anatomy of the mitral isthmus is also discussed in order to understand the possible obstacles to successful ablation. Finally, novel techniques which may facilitate mitral isthmus ablation are reviewed.
Mitral isthmus is often targeted as a part of stepwise approach during radiofrequency ablation for persistent atrial ablation. Acute success rate in achieving the mitral isthmus block is only modest, late reconduction rate is relatively high and, consequently, incomplete lesion may be proarrhythmic. We describe the first-in-man experience with successful MI ablation by bipolar RF energy delivery. A 64-year-old caucasian man after two previous ablation procedures for drug resistant atrial fibrillation in recent four years, which included pulmonary vein isolation and linear left atrial lesions, was referred for the treatment of recurrent perimitral flutter. Despite the third attempt to create bidirectional block at the mitral isthmus region, we were not even able to stop the arrhythmia by aggressive unipolar radiofrequency ablation both from the left atrium and coronary sinus, because of deeply embedded slow conducting channel probably around the vein of Marshall. Arrhythmia was finally terminated and the
Background- Segmental ostial catheter ablation (SOCA) to isolate the pulmonary veins (PVs) and left atrial catheter ablation (LACA) to encircle the PVs both may eliminate paroxysmal atrial fibrillation (PAF). The relative efficacy of these 2 techniques has not been directly compared.. Methods and Results- Of 80 consecutive patients with symptomatic PAF (age, 52±10 years), 40 patients underwent PV isolation by SOCA and 40 patients underwent LACA to encircle the PVs. During SOCA, ostial PV potentials recorded with a ring catheter were targeted. LACA was performed by encircling the left- and right-sided PVs 1 to 2 cm from the ostia and was guided by an electroanatomic mapping system; ablation lines also were created in the mitral isthmus and posterior left atrium. The mean procedure and fluoroscopy times were 156±45 and 50±17 minutes for SOCA and 149±33 and 39±12 minutes for LACA, respectively. At 6 months, 67% of patients who underwent SOCA and 88% of patients who underwent LACA were free of ...
This is a multi-center, observational, 1-year prospective cohort study (1 year follow-up, at 3, 6 and 12 month) with approximately 675 participants. We will conduct a thorough outcomes assessment utilizing data from Magnetic Resonance Imaging (MRI) scans, as well as pre-procedure and follow-up data. Scans will be blinded to location of participating site. MRI scans will be sequenced and analyzed as they arrive from the database.. Imaging Protocol: All patients will undergo a Delayed-Enhancement MRI (DE-MRI) within 30 days prior to the atrial fibrillation (AF) ablation procedure. The purpose of the initial MRI is to quantify the degree of atrial structural remodeling or fibrosis pre-ablation. Following ablation, DE-MRI will be obtained at 3, 6, and 12 months follow-up to detect and quantify ablation-related scar formation.. Clinical Follow-up: The institution where the ablation was performed will continue post-procedural care following standard of care procedures.. Atrial arrhythmia recurrences ...
TY - JOUR. T1 - Effect of radiofrequency ablation on atrial mechanical function in patients with atrial flutter. AU - Welch, Patrick J.. AU - Afridi, Imran. AU - Joglar, Jose A.. AU - Sheehan, Clifford J.. AU - Zagrodzky, Jason D.. AU - Abraham, Theodore P.. AU - Page, Richard L.. AU - Hamdan, Mohamed H.. PY - 1999/8/15. Y1 - 1999/8/15. N2 - Atrial stunning, as assessed by left atrial appendage emptying and increased spontaneous echo contrast, is known to occur following direct- current cardioversion of atrial fibrillation (AF) and atrial flutter (AFI). Little is known on atrial mechanical function and the time course of atrial recovery following radiofrequency ablation of AFI. Fourteen patients undergoing radiofrequency ablation of persistent typical counterclockwise AFI were enrolled. Two-dimensional and pulse Doppler transesophageal echocardiography (TEE) were performed before ablation and immediately following restoration of sinus rhythm. Left atrial spontaneous echo contrast grades, left ...
TY - JOUR. T1 - Clinical significance of early recurrences of atrial tachycardia after atrial fibrillation ablation. AU - Choi, Jong Il. AU - Pak, Hui Nam. AU - Park, Jae Seok. AU - Kwak, Jae Jin. AU - Nagamoto, Yasutsugu. AU - Lim, Hong Euy. AU - Park, Sang Weon. AU - Hwang, Chun. AU - Kim, Young Hoon. PY - 2010/12. Y1 - 2010/12. N2 - Early Recurrence After AF Ablation. Background: Atrial tachycardia (AT) commonly recurs within 3 months after radiofrequency catheter ablation for atrial fibrillation (AF). However, it remains unclear whether early recurrence of atrial tachycardia (ERAT) predicts late recurrence of AF or AT. Methods: Of 352 consecutive patients who underwent circumferential pulmonary vein isolation with or without linear ablation(s) for AF, 56 patients (15.9%) with ERAT were identified by retrospective analysis. ERAT was defined as early relapse of AT within a 3-month blanking period after ablation. Results: During 21.7 ± 12.5 months, the rate of late recurrence was higher in ...
Evidence-based recommendations on endoscopic bipolar radiofrequency ablation for biliary obstruction caused by bile duct and pancreas cancers..
Abstract:. Ventricular tachycardia (VT) is one of the major causes of sudden cardiac death (SCD). In general, VT could be managed with antiarrhythmic drugs (AADs) therapy, catheter ablation and implantable cardioverter defibrillators (ICD). While the AADs therapy and catheter ablation have been shown to reduce the recurrence of VT, only the ICD therapy is effective in aborting SCD. The recently published VANISH trial reveals that VT catheter ablation significantly decreases the rate of death, VT storm and appropriate ICD shock comparing with an escalation of AADs therapy for ischemic cardiomyopathy (ICM). However, the mapping strategies and feasibility of VT catheter ablation are often limited by the hemodynamically intolerant VT. Substrate modification strategy and percutaneous left ventricular assist device (pLVAD) are often used to overcome the hemodynamic intolerance. So far there are no large-scale randomized clinical trials comparing different mapping strategies in the setting of ...
The global Ablation Technology Market is primarily driven by high incidence of chronic illnesses, such as cancer. Rising cancer cases fuel the need for minimally invasive procedures for diagnostics purposes. Surgical removal of body tissues is carried out by minimally invasive procedures. These procedures employ ablation technologies. Besides being economical, ablation technologies ensure quick recovery and cause lesser damage to body tissues. They also ensure lower risks of infection.. Favorable government initiatives and a rapidly growing geriatric population are factors that positively impact demand. Owing to high success rates in diagnosis of chronic illnesses and minimal risks, developing economies, such as Brazil, India, Russia, and China are gradually adopting ablation technologies. It is anticipated that popularity of minimally invasive procedures and surging per capita expenditure on healthcare may propel the ablation technology market during the forecast period (2012 to 2020).. Browse ...
Radiofrequency ablation is today the most common invasive technique used to treat thyroid pancreas, bone, liver, kidneys, and lung cancer. It is an intricate procedure done by highly experienced Interventional Radiologists. In the US, for instance, the Austin radiofrequency ablation clinic in Texas has been attested. This is due to their high patient survival rates.. What is Radiofrequency Ablation?. If you or your loved one has cancer, then youve probably heard the doctor say that surgeries are, at times, not an option. This usually happens when the patients malignant tumor is at an early stage or is in locations that cant be surgically removable. Other times the patient is unable to afford the cost of surgical resection of the tumor.. Radiofrequency ablation involves the application of a high heat current through the tumor to kill the diseased cells.. How is it done?. Four key stages are followed to ensure a successful radiofrequency ablation.. Preoperative Evaluation. This is the first ...
Atrial fibrillation is the commonest cardiac arrhythmia. While a number of established drug therapies are often successful in achieving satisfactory control, more recently radiofrequency catheter ablation has emerged as an effective therapy for patients with paroxysmal AF. However, the place of catheter ablation remains unclear with limited data comparing ablation with antiarrhythmic drug therapy as first-line treatment in patients.. In the MANTRA-PAF trial 294 patients (mean age 55) with new onset paroxysmal atrial fibrillation and no history of antiarrhythmic drug use were randomly assigned to an initial strategy of either catheter ablation (146 patients) or therapy with class IC or class III antiarrhythmic agents (148 patients). Follow-up was by 7-day Holter-monitoring at 3, 6, 12, 18, and 24 months. The primary end points were the cumulative and per-visit burden of atrial fibrillation (i.e., percentage of time in atrial fibrillation). During follow-up there was no significant difference ...
TY - JOUR. T1 - Elimination of triggers without an additional substrate modification is not sufficient in patients with persistent atrial fibrillation. AU - Park, Junbeom. AU - Pak, Hui Nam. PY - 2015/2/1. Y1 - 2015/2/1. N2 - Atrial fibrillation (AF) is a multifactorial disease with complex pathophysiology. Although restoring sinus rhythm delays the progression of atrial remodeling, non-pharmacologic intervention, such as radiofrequency catheter ablation (RFCA), should be done based on the background pathophysiology of the disease. While circumferential pulmonary vein isolation (CPVI) has been known to be the cornerstone of AF catheter ablation, a clinical recurrence rate after CPVI is high in patients with persistent AF (PeAF). Step-wise linear ablation, complex fractionate atrial electrogram (CFAE)-guided ablation, rotor ablation, ganglionate plexus ablation, and left atrial appendage isolation may improve the ablation success rate after CPVI. But, there are still substantial AF recurrences ...
Objectives: To describe the initial results and early follow-up data after radiofrequency catheter ablation (RFA) of septal hypertrophy in children with hypertrophic obstructive cardiomyopathy (HOCM).. Methods: 11 children (5 female; age range 5-17 years; weight range 17-52 kg) with symptomatic HOCM underwent RFA for septal reduction. After initial left ventricular angiography to delineate the anatomic extent of the obstruction, sequential AV pacing at varying AV delays was performed to determine whether the LVOT gradient could be influenced by pacing techniques. If this was not the case, RFA was performed. The His bundle was plotted and marked using the LocaLisa navigation system (Medtronic, Minneapolis). Using an 8F cooled tip catheter (Sprinklr, Medtronic) with an infusion rate of 300 ml/hour during RFA, ablation was commenced at the most apical extent of the hypertrophied septum. Three lines of contiguous RF lesions were made, extending upto just under the aortic valve. Care was taken to ...
BACKGROUND Even with a low energy setting, radiofrequency energy applications on the left atrial (LA) posterior wall may cause excessive transmural injury (ETI) during catheter ablation of atrial fibrillation (AF). OBJECTIVE The purpose of this study was to clarify the prevalence and characteristics of ETI. METHODS This study included 104 patients with AF who underwent extensive encircling pulmonary vein isolation (EEPVI) followed by an endoscopic examination (≤48 hours after EEPVI). EEPVI was performed under conscious sedation, and the ablation settings at the LA posterior wall were a maximum energy of 20 to 25 W and duration of ≤30 seconds. The ETI was defined as any injury that resulted from EEPVI, including esophageal damage or periesophageal nerve injury. RESULTS ETIs were found in 10 (9.6%) patients and were all asymptomatic; esophageal damage in 4 patients and periesophageal nerve injury in the remaining 6. All patients with ETI were below normal weight (body mass index [BMI] | 24.9 kg
The need for this trial arises out of 1) the rapidly increasing number of pts , 60 years of age with AF accompanied by symptoms and morbidity, 2) the failure of anti-arrhythmic drug therapy to maintain sinus rhythm and reduce mortality, 3) the rapidly increasing application of radio-frequency catheter ablation without appropriate evidence-based validation, and 4) the expanding impact of AF on health care costs.. This study will randomize up to 2200 patients to a strategy of catheter ablation versus pharmacologic therapy with rate or rhythm control drugs. Each pt will have 1) characteristics similar to AFFIRM pts (≥65 yo or ,65 with ,1 risk factor for stroke, 2) Documented AF warranting treatment, and 3) Eligibility for both catheter ablation and ≥2 anti-arrhythmic or ≥2 rate control drugs. Pts will be followed every 6 months for an average of approximately 5 years and will undergo repeat trans-telephonic monitor, Holter monitor, and CT/MR studies to assess the impact of treatment.. The ...
To the Editor:. Catheter ablation is an important treatment for recurrent, symptomatic atrial fibrillation (AF). The original procedure targeted focal triggers of AF arising from within the pulmonary veins (PVs). This technique generated minimal left atrial (LA) scar but was complicated by the development of PV stenosis (1). Pulmonary vein antral isolation (PVAI) creates circular ablation lines within the left atrium, minimizing the risk for PV stenosis, and has become the preferred procedure for paroxysmal AF ablation. However, when PVAI is combined with adjunctive ablation, as much as 40% of the LA myocardium may be replaced by scar during a single catheter ablation (2), raising a concern that the procedure may adversely affect the ability of the left atrium to act as a contractile chamber (transport function) and/or compliance chamber (reservoir function). Although prior studies have examined the effect of AF ablation (3) and scar (4) on LA contractility, the effect on LA compliance has ...
RF has been successful in destroying tumors in patients with HCC. It has many advantages compared with other methods of thermal ablation. Rossi et al.8 reported that the maximum diameter of coagulation necrosis was 2.5 cm. This was achieved with a single electrode insertion using an RF generator with a frequency of 480 kHz, a maximum output power of 50 W (electrosurgical generator, RITA Medical System), and four expandable needle electrodes. In our study, the greatest long-axis dimension of standard RFA was 26.7 ± 6.4 mm. using an RITA 500PA with a frequency of 460 kHz, a maximum output power of 50 W, and four expandable needle electrodes. A necrotic area of up to 3 cm in dimension produced with a cooled RF single electrode was observed in tumors10 and cluster electrodes achieved a much larger necrotic area.9, 12, 29 However, the limited volume of coagulation necrosis obtained at each activation of the RF system and the sometimes irregular burn shape due to the proximity of large vessels that ...
Between February 1995 to May 2000, 626 consecutive patients underwent radiofrequency catheter ablation for various types of cardiac arrhythmia. The mean age was 41 years, range 1-85 years. Mapping and ablation were guided by intracardiac electrogram and anatomical approaches. The initial success, compliction, recurrent and final success rates are shown below :-WPW AVRT AT AFI AVNRT PVC VT AF Initial success (%) 95 100 83 91 100 89 95 81 Complication (%) 2.1 4.6 7.1 8.8 6.0 7.7 1.4 25 Recurrence (%) 9 4 13 6 1 11 11 6 Final success (%) 93 99 77 88 100 89 91 75 Conclusion, RFCA is an effective treatment and should be considered as first line treatment for certain tachyarrhythmia ...
Ventricular arrhythmias (VAs) arising from the origin above pulmonary valve lack comprehensive investigation. This study aimed to disclose the characteristics and radiofrequency catheter ablation (RFCA) outcomes for those VAs. One hundred six VAs arising from the region above pulmonary valve treated with RFCA were included in this study. Seventy-five cases were identified in the pulmonary sinus cusps (PSCs, 32 in left sinus cusp (PLC), 15 in right (PRC), 28 in anterior (PAC)) and 31 cases were in the main stem of pulmonary artery (MSPA, 18 above PLC (LMSPA), 3 above PRC (RMSPA), 10 above PAC (AMSPA)). Compared with PSCs VAs, MSPA VAs exhibited a higher R wave amplitude in the inferior leads, a total inferior R amplitude | 5.1 mV predicting MSPA origins. LMSPA, RMSPA and AMSPA VAs resembled PLC, PRC and PAC VAs in electrocardiographic characteristics respectively. No electrophysiological differences were found between PSCs and MSPA VAs. The irrigated-up catheter and R0 Swartz long sheath were more
TY - JOUR. T1 - RFA Guardian. T2 - Comprehensive Simulation of Radiofrequency Ablation Treatment of Liver Tumors. AU - Voglreiter, Philip. AU - Mariappan, Panchatcharam. AU - Pollari, Mika. AU - Flanagan, Ronan. AU - Blanco Sequeiros, Roberto. AU - Portugaller, Rupert Horst. AU - Fütterer, Jurgen. AU - Schmalstieg, Dieter. AU - Kolesnik, Marina. AU - Moche, Michael. PY - 2018/12/1. Y1 - 2018/12/1. N2 - The RFA Guardian is a comprehensive application for high-performance patient-specific simulation of radiofrequency ablation of liver tumors. We address a wide range of usage scenarios. These include pre-interventional planning, sampling of the parameter space for uncertainty estimation, treatment evaluation and, in the worst case, failure analysis. The RFA Guardian is the first of its kind that exhibits sufficient performance for simulating treatment outcomes during the intervention. We achieve this by combining a large number of high-performance image processing, biomechanical simulation and ...
Iatrogenic ATs have been reported after either surgical or catheter ablation of AF.7-14 After ablation of paroxysmal AF (wherein the initial ablation procedure is predominantly directed to PV isolation), the mechanism of AT is virtually always focal, originating from reconnected PVs.10 However, ablation of persistent AF typically involves LA, and sometimes RA, substrate ablation (linear lesions and ablation of sites of complex fractionated electrograms) beyond simple PV isolation. Here, we report a novel approach to mapping these postablation scar-related ATs by using a combination of activation mapping with a multielectrode array mapping catheter and targeted entrainment mapping.. The mechanisms of postablation ATs depend to a large extent on the ablation performed in the index procedure. A segmental approach to PV isolation, confirmed with a circular mapping catheter, resulted in most postablation ATs being of a focal mechanism from reconnected PV ostia.10,12 Anatomic approaches have been ...
The goal of the trial was to evaluate treatment with high-frequency source ablation compared with circumferential pulmonary vein isolation among patients with symptomatic drug-refractory atrial fibrillation (AF).. Contribution to the Literature: The RADAR-AF trial showed that high-frequency source ablation plus circumferential pulmonary vein isolation was not superior to circumferential pulmonary vein isolation alone.. ...
BACKGROUND: The catheter ablation using radiofrequency(RF) energy in patients with AV nodal reentrant tachycardia(AVNRT) has been proved as a safe and effective nonpharmacologic therapeutic modality. The selective ablation of slow pathway is now becomming a standard treatment in patients with AVNRT because of its high success rate and negligible AV block risk. In our study, we demonstrated the feasibility, success rate and complications of selective radiofrequency catheter ablation of fast pathway or slow pathway for the treatment of AV nodal reentrant tachycardia. METHODS: Among patients diagnosed as AVNRT by electrophysiologic study, total 21 patients (M : F=11 :10, mean age ; 39 years old) were included in this study. Selective RF ablation of fast pathway was performed in 9 patients and selective RF ablation of slow pathway in 12 patients. The RF generator used in this study was Osypka HAT 200 model and catheters were 6F or 7F steerable catheters with 4 mm distal tip. RESULTS: The successful ...
TY - JOUR. T1 - Radiofrequency catheter ablation of atrioventricular nodal reentrant tachycardia in a patient with orthotopic heart transplantation by bicaval anastomosis. AU - Rodríguez De Armas, Lissette. AU - Dorantes, Margarita. AU - Castro, Jesús. AU - Tornés, Francisco José. AU - Rodríguez, Julio César. AU - Fayad, Yanela. AU - Almeida, Javier. PY - 2006/4/1. Y1 - 2006/4/1. UR - https://www.scopus.com/inward/record.uri?partnerID=HzOxMe3b&scp=33749438223&origin=inward. UR - https://www.scopus.com/inward/citedby.uri?partnerID=HzOxMe3b&scp=33749438223&origin=inward. U2 - 10.1007/s10840-006-9009-5. DO - 10.1007/s10840-006-9009-5. M3 - Article. SP - 171. EP - 174. JO - Journal of Interventional Cardiac Electrophysiology. JF - Journal of Interventional Cardiac Electrophysiology. SN - 1383-875X. ER - ...
Preface, vii List of contributors, ix. VeniceChart task force composition, xxxiii. List of abbreviations, xxxvii. 1 Anatomy of structures relevant to atrial fibrillation ablation, 1. 2 Pathophysiology of atrial fibrillation, 20. 3 Techniques and technologies for atrial fibrillation catheter ablation, 35. 4 Endpoints of catheter ablation for atrial fibrillation, 61. 5 Patient management pre-, during-, and postablation, 70. 6 Periprocedural and long-term anticoagulation, 77. 7 Periprocedural and late complications, 85. 8 Short- and long-term efficacy of catheter ablation procedures for atrial fibrillation, 118. 9 Indications to atrial fibrillation ablation and cost-effectiveness, 127. 10 Clinical trials on atrial fibrillation/future perspectives, 137. 11 Surgical approach/ablation, 161. 12 Hospital equipment and facilities, personnel, training requirements, and competences, 176. Index, 184. ...
Background: Radiofrequency (RF) catheter ablation is the procedure of choice for the potential cure of atrioventricular nodal reentrant tachycardia (AVNRT) with high success rates. We hypothesed that as a result of the close proximity of Kochs triangle and low inter-atrial septal fibers, the RF ablation applied at this region may result in prolongation of inter-atrial conduction time (IACT). Methods: RF ablation of AVNRT was performed by conventional technique. IACT was measured before and 20 minutes after RF ablation during sinus rhythm. Number of ablations given and duration of ablation were noted. Results: The study group was consisted of 48 patients (36 [75%] female, 12 [25%] male, mean age 43.4 ± 14. 5 years). RF ablation was successful in all patients. Mean RF time was 4. 0 ± 3. 3 minutes and mean number of RF was 11. 9 ± 9, 8. The mean IACT was 70.1 ± 9.0 ms before ablation and 84.9 ± 12.7 ms after ablation, which demonstrated a significant prolongation (p,0.001). The prolongation ...
Atrioventricular nodal reentry tachycardia (AVNRT) is the most common arrhythmia in electrophysiology laboratory. The classical approach to the treatment is ablation of slow or fast pathway with right approach. In 3% of cases, conventional classical approach is insufficient and tachycardia recurs again. In aggressive right-hand side ablation, AV block can be seen. Experience with AVNRT ablation with left approach is limited. The aim of this study was to examine the results of the early ablation of typical AVNRT with the left approach.. 150 patients with typical AVNRT ablation by conventional methods in electrophysiology laboratory were included in the study. The average age of the patients was 43.2±2.6. 12. In 12 patients (8%) recurrence was observed immediately after the procedure. With retrograde aortic approach left posteroseptal radiofrequency (RF) energy was given to all 12 cases. The rhythm of the intersection in all cases observed. RF energy is until you return to sinus rhythm. ...
There are still some AV nodal reentrant tachycardias with unusual AV nodal properties that need further study to understand these complexities. Accordingly, the two-dimensional model with alpha and beta pathways in the AV nodal reentrant tachycardia
GRÖNEFELD, G. C., WEGENER, F., ISRAEL, C. W., TEUPE, C. and HOHNLOSER, S. H. (2003), Thromboembolic Risk of Patients Referred for Radiofrequency Catheter Ablation of Typical Atrial Flutter Without Prior Appropriate Anticoagulation Therapy. Pacing and Clinical Electrophysiology, 26: 323-327. doi: 10.1046/j.1460-9592.2003.00042.x ...
Laser, Rf or catheter ablation to treat atrioventricular nodal reentrant tachycardia (avnrt) (3d-controlled fluoroscopy) (costs for program #159909) ✔ University Hospital Düsseldorf ✔ Department of General Pediatrics, Neonatology and Pediatric Cardiology ✔ BookingHealth.com
Laser, Rf or catheter ablation to treat atrioventricular nodal reentrant tachycardia (avnrt) (3d-controlled fluoroscopy) (costs for program #126283) ✔ University Hospital Rechts der Isar of the Munich Technical University ✔ Department of Pediatrics ✔ BookingHealth.com
ntroduction: Long side-firing microwave (MW) arrays can deliver energy uniformly over its length without the need for intimate endocardial contact. We hypothesize that a novel 6 Fr 20 mm long percutaneous high-efficiency MW antenna array ablation catheter can rapidly create long, continuous, and transmural linear ablation lesions. Methods and Results: Cavotricuspid isthmus (CTI)-dependent atrial flutter (AFL) was created in 11 sheep by a line of radiofrequency ablation lesions in the posterior right atrium (RA) linking the venae cavae. After 46 weeks recovery, CTI-dependent AFL was still inducible in all 11 sheep (cycle length 178 ± 13 ms). MW ablation of the CTI at 100 W for 30 seconds was then performed with an endpoint of AFL noninducibility. AFL was not inducible in all 11 sheep after 4.3 ± 3.3 MW applications (129 ± 99 seconds). The last 6 animals needed fewer ablations (2.2 ± 1.5) and 3 of these sheep required only a single ablation. Although conduction times from proximal coronary ...
TY - JOUR. T1 - Mitral annuloplasty ring dehiscence demonstrated by preablation cardiac computed tomographic angiography. T2 - Influence on radiofrequency ablation of atrial fibrillation. AU - Cheng, Alan. AU - George, Richard. PY - 2012/7/1. Y1 - 2012/7/1. N2 - We present a case that demonstrates mitral valve annuloplasty ring dehiscence discovered on a cardiac computed tomography imaging study performed prior to radiofrequency ablation for atrial fibrillation. We describe the relevant imaging findings and the clinical implications this finding has on catheter selection and patient safety during a radiofrequency ablation procedure.. AB - We present a case that demonstrates mitral valve annuloplasty ring dehiscence discovered on a cardiac computed tomography imaging study performed prior to radiofrequency ablation for atrial fibrillation. We describe the relevant imaging findings and the clinical implications this finding has on catheter selection and patient safety during a radiofrequency ...
Radiofrquency (RF) treatments for low back pain are known by a few different names: radiofrequency, radiofrequency lesioning, radiofrequency ablation, and radiofrequency neurotomy. Common side effects of ablation of the endometrium are vaginal discharge, menstrual-style cramping and frequent urination. Since radiofrequency ablation is less invasive than stripping and ligation surgery, complications and associated risks can be avoided.. What you are experiencing are normal side effects following an ablation procedure. These side effects include thermal injury to the skin, nerves, muscles, or. A needle electrode is used to send electrical currents to the nerves in your facet joint. The risk of complication from radiofrequency ablation is very low.. Packer DL, et al. Possible Side Effects of Radiofrequency Ablation Therapy. Nerve damage may cause feelings of burning, pain or prickling after the surgery. The sheath usually stays in your leg for several hours after catheter ablation. you may ...
Aims To test the ability of four circulating biomarkers of fibrosis, and of low left atrial voltage, to predict recurrence of atrial fibrillation after catheter ablation. Background Circulating biomarkers potentially may be used to improve patient selection for atrial fibrillation ablation. Low voltage areas in the left atrium predict arrhythmia recurrence when mapped in sinus rhythm. This study tested type III procollagen N terminal peptide (PIIINP), galectin-3 (gal-3), fibroblast growth factor 23 (FGF-23), and type I collagen C terminal telopeptide (ICTP), and whether low voltage areas in the left atrium predicted atrial fibrillation recurrence, irrespective of the rhythm during mapping. Methods 92 atrial fibrillation ablation patients were studied. Biomarker levels in peripheral and intra-cardiac blood were measured with enzyme-linked immunosorbent assay. Low voltage (,0.5mV) was expressed as a proportion of the mapped left atrial surface area. Follow-up was one year. The primary endpoint was ...
TY - JOUR. T1 - Gender, race, and health insurance status in patients undergoing catheter ablation for atrial fibrillation. AU - Patel, Nileshkumar. AU - Deshmukh, Abhishek. AU - Thakkar, Badal. AU - Coffey, James O.. AU - Agnihotri, Kanishk. AU - Patel, Achint. AU - Ainani, Nitesh. AU - Nalluri, Nikhil. AU - Patel, Nilay. AU - Patel, Nish. AU - Patel, Neil. AU - Badheka, Apurva O.. AU - Kowalski, Marcin. AU - Hendel, Robert. AU - Viles-Gonzalez, Juan. AU - Noseworthy, Peter A.. AU - Asirvatham, Samuel. AU - Lo, Kaming. AU - Myerburg, Robert J.. AU - Mitrani, Raul D.. PY - 2016/4/1. Y1 - 2016/4/1. N2 - Catheter ablation for atrial fibrillation (AF) has emerged as a popular procedure. The purpose of this study was to examine whether there exist differences or disparities in ablation utilization across gender, socioeconomic class, insurance, or race. Using the Nationwide Inpatient Sample (2000 to 2012), we identified adults hospitalized with a principal diagnosis of AF by ICD 9 code 427.31 who had ...
Catheter ablation is a minimally invasive procedure used to remove or destroy faulty electrical pathways from sections of the heart that promote irregular cardiac rhythms (also known as cardiac arrhythmias). Cardiac arrhythmias can be of several types, including atrial fibrillation, atrial flutter, and supraventricular tachycardia. Atrial fibrillation is the most common type of cardiac arrhythmia prevalent among the global population. EP ablation catheters are devices used to treat cardiac arrhythmias. These catheters destroy the faulty tissue with the use heat energy generated from RF, laser and microwave radiation or by freezing the abnormal tissue.. Analysts forecast the Global Electrophysiology Ablation Catheters market to grow at a CAGR of percent over the period 2013-2018.. Covered in this Report. The Global Electrophysiology Ablation Catheters market can be segmented into five divisions: RF Ablation EP Catheters, Cryoablation EP Catheters, Laser Ablation Systems, Microwave Ablation EP ...
Guides you through the decision to have catheter ablation for the heart rhythm problem supraventricular tachycardia. Lists benefits and risks of catheter ablation and medical therapy. Includes interactive tool to help you make your decision.
antiarrhythmic medications - MedHelps antiarrhythmic medications Center for Information, Symptoms, Resources, Treatments and Tools for antiarrhythmic medications. Find antiarrhythmic medications information, treatments for antiarrhythmic medications and antiarrhythmic medications symptoms.
Aims Steering soft, flexible catheters using an external magnetic field could have advantages for heart catheterization, especially for therapy of tachyarrhythmias. Our aims were to assess the feasibility of magnetic navigation to Kochs triangle and reliable ablation of atrioventricular nodal re-entry tachycardia (AVNRT) with a magnetic catheter.. Methods and results Consecutive patients with AVNRT were mapped and ablated with a magnetically enabled catheter (Helios I or II), with, respectively, one and three magnets at the tip. The catheter was remotely advanced with the Cardiodrive™ system and orientated with the Navigant™ control system. After initial positioning with the external magnets, adjustment was made in 5° steps. Success rates, procedure, and fluoroscopy times were analysed, and compared with a local contemporary series of conventional AVNRT ablations. Magnetic navigation was feasible in all 20 patients. Targets were easily reached. Catheters remained stable in position during ...
The endovenous radio frequency ablation (or VNUS Closure) procedure is a minimally-invasive vein treatment. It uses a patented radiofrequency catheter inserted into the vein, which applies RF energy to heat the vein. This causes the vein to collapse and seal shut. The VNUS Closure procedure has been FDA-approved since 1999 and over 250,000 procedures have been performed worldwide.
Although pulmonary vein isolation is accepted as an established interventional treatment in paroxysmal atrial fibrillation (AF), alternative modalities are being investigated because of the high recurrence rates of nonparoxysmal forms. One of the alternative ablation approaches is ablation or modification of vagal ganglionated plexi (VGP). The technique has not only been used in vagally mediated AF but also investigated in paroxysmal and nonparoxysmal AF. Clinical studies demonstrate significant discrepancy related with detection of VGP sites or ablation targets and definition of procedurel end-points, so far. In this review, we aimed to discuss the current data on the role of VGP in the pathogenesis of AF and potential therapeutic implications of ablation of these ganglia.. Keywords: parasympathetic, vagal ganglia, cardioneuroablation, tachycardia, ...
The macro-reentrant circuit of isthmus-dependent atrial flutter (AFL) is located in the right atrium around the tricuspid annulus. High acute success and low recurrence rate makes isthmus ablation a definitive therapy for patients with only AFL. However, a review of the literature suggests that, different aspects of this macro-reentrant circuit are still not entirely understood, while new information continues to emerge. The aim of this article is to discuss some gaps in our complete understanding of isthmus-dependent AFL. Few hypotheses have been stated which are open to investigation. ...
Radio frequency ablation devices have found a widespread application in arthroscopic surgery. However, recent publications report about elevated temperatures, which may cause damage to the capsular tissue and especially to chondrocytes. The purpose of this study was the investigation of the maximum temperatures that occur in the ankle joint with the use of a commercially available radio frequency ablation device. Six formalin-fixed cadaver ankle specimens were used for this study. The radio frequency device was applied for 120 s to remove tissue. Intra-articular temperatures were logged every second for 120 s at a distance of 3, 5 and 10 mm from the tip of the radio frequency device. The irrigation fluid flow was controlled by setting the inflow pressure to 10 mmHg, 25 mmHg, 50 mmHg and 100 mmHg, respectively. The controller unit voltage setting was set to 1, 5 and 9. Maximum temperatures exceeding 50 °C/122 °F were observed for all combinations of parameters, except for those with a pressure of 100
Antiarrhythmic drugs alone control atrial flutter in only 50-60% of patients. Since the early 1990s, radiofrequency catheter ablation (RFA) has been used to interrupt the reentrant circuit in the righ... more
Methods and Results We studied 41 patients who underwent successful catheter ablation of LPF-VT with HV interval ,0 ms (n=8; proximal-LPF group), HV interval 0 to −15 ms (n=15; middle-LPF group), and HV interval ,-15 ms (n=18; distal-LPF group). The earliest mapped presystolic potential (PP)-QRS interval was 34.1±4.2, 24.5±3.2, and 19.4±2.8 ms in proximal-, middle-, and distal-LPF groups. The earliest PP ratio (PP-QRS interval during VT/HV interval during sinus rhythm) was 0.59±0.05, 0.45±0.07, and 0.31±0.05 in the proximal-, middle-, and distal-LPF groups. There were statistically significant differences between the 3 groups in earliest PP ratio, and there was close correlation between the HV interval during LPF-VT and earliest PP ratio. The QRS duration in the proximal-LPF group (114±6 ms) was significantly narrower compared with the middle-LPF group (128±5 ms) and distal-LPF group (140±6 ms). In leads I and V6, the ratio of R/S tended to be greater in the proximal-LPF group ...
Atrial fibrillation is a heart arrhythmia in which abnormal electrical signals begin in the atria (top chambers) of the heart. Atrial fibrillation may be treated by catheter ablation, if medications alone are not effective. In ablation, areas of tissue in the heart that cause arrhythmias are destroyed.. Before ablation procedure, electrical mapping of the heart is performed. An electrically-sensitive catheter is used to map the heart muscle and the origins of the electrical activity throughout the heart. The map tells the specialist which areas of the heart are creating problematic electric signals that interfere with the proper rhythm.. Catheter ablation is a non-invasive procedure; no major incision is necessary. A surgeon inserts a catheter into the heart via a blood vessel. The surgeon carefully destroys malfunctioning tissue using the catheter to deliver energy (such as radiofrequency, laser or cyrotherapy) to scar the problematic areas. The scarred areas will no longer send abnormal ...
Thyroid Radiofrequency Ablation of Thyroid Nodules: A 2017 Preview Comments. Richard Guttler MD,FACE,ECNU. Clinical Professor of Medicine Keck/USC school of Medicine. Director, Santa Monica Thyroid Center, Santa Monica Ca 90404. Member, American Association of Clinical Endocrinologists task force on the introduction of thyroid radiofrequency ablation RFA of thyroid nodules to the United States.. [email protected] www.thyroid.com. Introduction Comments. Radiofrequency Ablation has been reported in various tumors including liver or kidney tumors but not for thyroid in the USA. However thyroid RFA has been reported to be a safe and efficient treatment option in managing symptomatic cold thyroid nodules or hyperfunctioning thyroid nodules in other countries. Cosmetic and symptoms have been shown to be significantly improved both in the short and long terms after RFA.. ...
TY - JOUR. T1 - Imaging-Based Simulations for Predicting Sudden Death and Guiding Ventricular Tachycardia Ablation. AU - Trayanova, Natalia A.. AU - Pashakhanloo, Farhad. AU - Wu, Katherine Chih-Ching. AU - Halperin, Henry R. PY - 2017/7/1. Y1 - 2017/7/1. KW - arrhythmias cardiac. KW - cardiac ablations. KW - defibrillators implantable. KW - image-based simulations. KW - myocardial infarction. KW - risk assessment. KW - tachycardia ventricular. UR - http://www.scopus.com/inward/record.url?scp=85024912752&partnerID=8YFLogxK. UR - http://www.scopus.com/inward/citedby.url?scp=85024912752&partnerID=8YFLogxK. U2 - 10.1161/CIRCEP.117.004743. DO - 10.1161/CIRCEP.117.004743. M3 - Article. C2 - 28696219. AN - SCOPUS:85024912752. VL - 10. JO - Circulation: Arrhythmia and Electrophysiology. JF - Circulation: Arrhythmia and Electrophysiology. SN - 1941-3149. IS - 7. M1 - e004743. ER - ...
A 2-month-old baby was resuscitated from ventricular fibrillation attributed to a concurrent chaotic atrial tachycardia with Wolff-Parkinson-White syndrome. He underwent successful radiofrequency catheter ablation of an accessory pathway. Throughout the 4-year follow-up after the procedure, the boy remained free of any drugs, was in sinus rhythm without ventricular pre-excitation and ...
Catheter ablation[edit]. A further treatment option for people with Brugada syndrome is radiofrequency catheter ablation.[33] ... Kautzner J, Peichl P (June 2017). "Catheter ablation to prevent sudden cardiac death". International Journal of Cardiology. 237 ...
Medication, catheter ablation. Lown-Ganong-Levine syndrome (LGL) is a pre-excitation syndrome of the heart. Those with LGL ...
Definitive care may include catheter ablation. AV reentrant tachycardia (AVRT) requires an accessory pathway for its ...
Definitive care may include catheter ablation.[citation needed] AV reentrant tachycardia[edit]. AV reentrant tachycardia (AVRT ...
Ablation[edit]. Catheter ablation (CA) is a procedure performed by an electrophysiologist, a cardiologist who specializes in ... Electrophysiologists generally use two forms of catheter ablation-radiofrequency ablation and cryoablation. In young people ... After catheter ablation, people are moved to a cardiac recovery unit, intensive care unit, or cardiovascular intensive care ... Upadhyay, GA; Alenghat, FJ (August 2019). "Catheter Ablation for Atrial Fibrillation in 2019". JAMA. 322 (7): 686-87. doi: ...
Catheter ablationEdit. *Ablation therapy - Catheter based ablation of lesions in the heart (with radiofrequency energy, ... "Non-complex" ablations include ablation for arrhythmias such as: AV nodal reentrant tachycardia, accessory pathway mediated ... "Complex" ablations include ablation for arrhythmias such as multifocal atrial tachycardia, atrial fibrillation, and ventricular ... In addition to the apparatus used for a "non-complex" ablation, these procedures often make use of sophisticated computer ...
Practical Guide to Catheter Ablation of Atrial Fibrillation (2nd ed.). Wiley-Blackwell. pp. 65-73. ISBN 9781118658505.. .mw- ... Radiofrequency ablation. References[edit]. *^ a b c Fauci, Anthony, et al. Harrison's Textbook of Medicine. New York: McGraw ... ablation.[5] Its navigation system calculates the position and orientation of the catheter tip, using three known magnetic ... The system is designed to visualise the real-time calculated position and orientation of a specialised RF ablation catheter ...
Catheter ablation is a possible treatment for those with recurrent VT.[14] Remote magnetic navigation is one effective method ... There was consensus among the task force members that catheter ablation for VT should be considered early in the treatment of ... June 2009). "EHRA/HRS Expert Consensus on Catheter Ablation of Ventricular Arrhythmias: developed in a partnership with the ... Wissner E, Stevenson WG, Kuck KH (June 2012). "Catheter ablation of ventricular tachycardia in ischaemic and non-ischaemic ...
If medications fail to control an arrhythmia, another treatment option may be catheter ablation. In these procedures, wires are ... Main articles: Heart arrhythmia, Radiofrequency ablation, and Artificial cardiac pacemaker. Abnormal heart rhythms (arrhythmias ... Whilst the majority of arrhythmias can be treated using minimally invasive catheter techniques, some arrhythmias (particularly ...
Catheter ablation of cardiac arrhythmias. Huang, Shoei K.,, Miller, John M. (John Michael), 1954- (Third ed.). Philadelphia, PA ... Inoue, Shin; Becker, Anton E. (1998). "Koch's Triangle Sized Up: Anatomical Landmarks in Perspective of Catheter Ablation ... Implications for Catheter Ablation". Revista Española de Cardiología. 63 (6): 660-7. doi:10.1016/S1885-5857(10)70140-7. PMID ...
In August 2007, Phillips announced that he would undergo catheter ablation to address his heart problems.[14] Later that autumn ...
Formation of an AVF is a potential complication of catheter ablation. Catheter Ablation of Cardiac Arrhythmias (4 ed.). ...
Issa, Ziad F.; Miller, John M.; Zipes, Douglas P. (2019-01-01). "Complications of Catheter Ablation of Cardiac Arrhythmias". ... For example, CT angiography avoids the invasive insertion of a catheter. CT scanning can perform a virtual colonoscopy with ...
"Adoption of fluoroless catheter ablation may rise with proper training", CardiologyToday, June 23, 2017. "Bruce Lerman , Weill ... 2018 "Fluoroless catheter ablation of atrial fibrillation." Heart Rhythm. 2017 "Limitations of dormant conduction as a ... Among his publications are: "Risk of Mortality Following Catheter Ablation of Atrial Fibrillation." Journal of the American ... 2019 "Sex-based differences in outcomes, 30-day readmissions, and costs following catheter ablation of atrial fibrillation: the ...
Future episodes can be prevented by catheter ablation. About 2.3 per 1000 people have paroxysmal supraventricular tachycardia. ...
Cheema A; Vasamreddy CR; Dalal D. "Long-term single procedure efficacy of catheter ablation of atrial fibrillation". J Interv ... is a cardiac arrhythmia mapping company for targeting catheter ablation company launched in San Diego, California and ... "Topera receives FDA clearance for FIRMap Catheter". News Medical. Retrieved 15 April 2014. "Topera's FIRMap Catheter Receives ... "Catheter ablation for atrial fibrillation: are results maintained at 5 years of follow-up?". J Am Coll Cardiol. 57 (2): 160-6. ...
He pioneered the use of catheter ablation to treat atrial fibrillation using the technique of pulmonary vein isolation to ... Warin, J F; Haissaguerre, M; Lemetayer, P; Guillem, J P; Blanchot, P (October 1988). "Catheter ablation of accessory pathways ... The team pioneered the use of catheter ablation to treat ventricular fibrillation in 2002. Despite the effective treatments ( ... "Catheter ablation of Mahaim fibers with preservation of atrioventricular nodal conduction". Circulation. 82 (2): 418-427. doi: ...
Long-term management is best achieved with catheter ablation. Without treatment, the prevalence of tachycardia-induced ... cardiomyopathy has been reported to be between 20% and 50%, however most patients who undergo ablation have significant ...
... in people treated with radiofrequency catheter ablation for WPW. If radiofrequency catheter ablation is successfully performed ... Two main types of catheter ablation include cryoablation (cold) or radiofrequency (heat) ablation. This procedure is performed ... Thakur RK, Klein GJ, Yee R (September 1994). "Radiofrequency catheter ablation in patients with Wolff-Parkinson-White syndrome ... catheter ablation). It is unclear whether invasive risk stratification (with PES) is necessary in the asymptomatic individual. ...
Catheter ablation may be used to treat intractable ventricular tachycardia. It has a 60-90% success rate. Unfortunately, due to ... Indications for catheter ablation include drug-refractory VT and frequent recurrence of VT after ICD placement, causing ... catheter ablation, and placement of an implantable cardioverter-defibrillator. Prior to the decision of the treatment option, ... "Ventricular tachycardia catheter ablation in arrhythmogenic right ventricular dysplasia: a 16-year experience". Current ...
Catheter ablation is a possible treatment for those with recurrent VT.[16] Remote magnetic navigation is one effective method ... There was consensus among the task force members that catheter ablation for VT should be considered early in the treatment of ... June 2009). "EHRA/HRS Expert Consensus on Catheter Ablation of Ventricular Arrhythmias: developed in a partnership with the ... "Catheter ablation of ventricular tachycardia in ischaemic and non-ischaemic cardiomyopathy: where are we today? A clinical ...
September 2007). "Cost Comparison of Catheter Ablation and Medical Therapy in Atrial Fibrillation". Journal of Cardiovascular ... He started a complex ablation program there, developing it into one of the most successful ablation programs in Canada, ... He has published research into complex ablation and pioneered cardiac ablation methods. Khaykin attended the University of ... "Prior Rhythm-Control Failure With Amiodarone Predicts Atrial Fibrillation Recurrence Following Catheter Ablation: Presented at ...
... it is usually hard to treat and one may consider radiofrequency catheter ablation. Jameson, J. N. St C.; Dennis L. Kasper; ...
Bhaskaran, Ashwin; Tung, Roderick; Stevenson, William G.; Kumar, Saurabh (2019). "Catheter Ablation of VT in Non-Ischaemic ...
Bhaskaran, Ashwin; Tung, Roderick; Stevenson, William G.; Kumar, Saurabh (2019). "Catheter Ablation of VT in Non-Ischaemic ... A catheter is inserted into an artery (typically the radial or femoral artery) and pushed to the vessels supplying the heart. A ... Kolkailah (2018). "Radial artery versus femoral artery approach for performing coronary catheter procedures in people with ... radio-opaque dye is administered through the catheter and a sequence of x-rays (fluoroscopy) is performed. Obstructed or ...
Reducing frequent PVC (>20%) by antiarrhythmic drugs or by catheter ablation significantly improves heart performance. Recent ... Radiofrequency catheter ablation treatment. It is advised for people with ventricular dysfunction and frequent arrhythmias or ... In these cases, if the PVCs are reduced or removed (for example, via ablation therapy) the cardiomyopathy usually regresses. ... Very frequent PVCs in people with dilated cardiomyopathy may be treated with radiofrequency ablation. Although there are many ...
Invasive treatments include forms of catheter ablation such as sinus node modification (selective ablation of the sinus node), ... Treatments in the form of pharmacological therapy or catheter ablation are available, but the condition is currently difficult ... 2005). "Sinus node revisited in the era of electroanatomical mapping and catheter ablation". Heart. 91 (2): 189-94. doi:10.1136 ... complete sinus node ablation (with associated implantation of a permanent artificial pacemaker), and AV node ablation in very ...
... catheter ablation) କାର୍ଯ୍ୟକ୍ଷମ ହୁଏ । ଆଟ୍ରିଆଲ ଫିବ୍ରିଲେସନ ନିମନ୍ତେ କ୍ୟାଲସିଅମ ଚାନେଲ ବ୍ଲକର (calcium channel blockers) ବା ବିଟା ବ୍ଲକର ...
These treatments begin by guiding a catheter up through the femoral artery in the leg, navigating to the desired target site ... stereotactic treatments are intended to destroy clonogenic cells by a process of ablation - i.e. the delivery of a dose ... the SAVI device delivers the radiation dose through multiple catheters, each of which can be individually controlled. This ... "Quantification and reduction of reflux during embolotherapy using an antireflux catheter and tantalum microspheres: Ex vivo ...
Using Image Integration Guided Catheter Ablation it is possible to know the precise location of the catheter in relation to the ... Transvenous catheter ablation is established as a curative treatment for many arrhythmias. ... J. Dong & H. Calkins (2006). Image Integration Guided Catheter Ablation of Arrhythmias. ... This is performed by a cardiologist who specializes in electrophysiology and is done percutaneously with catheters. ...
Alcohol septal ablation. Conduction system. Maze procedure Cox maze and minimaze. Catheter ablation Cryoablation. ...
en:Endometrial ablation (4). *en:Environmental enteropathy (2). *en:Epidemic (81) → 유행병 ... en:Central venous catheter (19). *en:Cerebral palsy (47) → 뇌성마비 *en:Cerebrovascular disease (12) ...
When it is delivered via catheter, it is called radiofrequency catheter ablation. Two important advantages of radio frequency ... In 2004, former British prime minister Tony Blair underwent radiofrequency catheter ablation for recurrent atrial flutter. In ... Endovenous ablation of perforator veins Avery J, Kumar K, Thakur V, Thakur A (2014). "Radiofrequency ablation as first-line ... Therefore, the introduction of non-surgical means of renal denervation with radiofrequency ablation catheter was ...
Alcohol septal ablation. Conduction system. Maze procedure Cox maze and minimaze. Catheter ablation Cryoablation. ... Ablation Equipment, a Cardiac Mapping System and the necessary cables, catheters and sheaths. ... Ablation[edit]. If at any step during the EP study the electrophysiologist finds the source of the abnormal electrical activity ... Once the catheter is in and all preparations are complete elsewhere in the lab, the EP study begins. The two large magnets are ...
Endovenous ablation for venous leg ulcers PMID 24096603 https://doi.org/10.1002/14651858.CD009494.pub2 ... Frequency of dressing changes for central venous access devices on catheter-related infections PMID 26827714 https://doi.org/ ... Devices and dressings to secure peripheral venous catheters to prevent complications PMID 26068958 https://doi.org/10.1002/ ... Dressings and securement devices for central venous catheters (CVC) PMID 26358142 https://doi.org/10.1002/14651858.CD010367. ...
Alcohol septal ablation. Conduction system. Maze procedure Cox maze and minimaze. Catheter ablation Cryoablation. ...
Alcohol septal ablation. Conduction system. Maze procedure Cox maze and minimaze. Catheter ablation Cryoablation. ... Through a catheter inserted in the groin, the valve leaflets are clipped together. This technique - percutaneous mitral valve ...
... intravenously administered photosensitizers can be illuminated using endoscopes and fiber optic catheters.[citation needed] ... "Photothermal ablation of bone metastasis of breast cancer using PEGylated multi-walled carbon nanotubes". Sci Rep. 5: 11709. ...
In this procedure, a foley catheter is laparoscopically inserted to the rectouterine pouch whereupon gradual traction and ...
Alcohol septal ablation. Conduction system. Maze procedure Cox maze and minimaze. Catheter ablation Cryoablation. ...
Alcohol septal ablation. Conduction system. Maze procedure Cox maze and minimaze. Catheter ablation Cryoablation. ... laser ablation of the cornea) or to a radiosurgical procedure (e.g. irradiation of a tumor). ...
The term is usually used to describe studies of such phenomena by invasive (intracardiac) catheter recording of spontaneous ... These procedures increasingly include therapeutic methods (typically radiofrequency ablation, or cryoablation) in addition to ... Interventional cardiology is a branch of cardiology that deals specifically with the catheter based treatment of structural ... Other may be effectively treated with catheter based procedures or heart surgery.[91] Occasionally a number of operations may ...
Alcohol septal ablation. Conduction system. Maze procedure Cox maze and minimaze. Catheter ablation Cryoablation. ...
Alcohol septal ablation. Conduction system. Maze procedure Cox maze and minimaze. Catheter ablation Cryoablation. ...
Alcohol septal ablation. Conduction system. Maze procedure Cox maze and minimaze. Catheter ablation Cryoablation. ... When it is delivered via catheter, it is called radiofrequency catheter ablation. ... Endovenous ablation of perforator veins *^ Avery J, Kumar K, Thakur V, Thakur A (2014). "Radiofrequency ablation as first-line ... Schematic view of a pulmonary vein ablation. The catheter reaches (from below) through the inferior vena cava, the right atrium ...
Alcohol septal ablation. Conduction system. Maze procedure Cox maze and minimaze. Catheter ablation Cryoablation. ... The Rashkind balloon atrial septostomy is performed during cardiac catheterization (heart cath), in which a balloon catheter is ... The catheter is threaded into the foramen ovale, a naturally existing hole between the atria that normally closes shortly after ... The details of the procedure are largely the same, except that a small blade on the end of the catheter is first used to create ...
Alcohol septal ablation. Conduction system. Maze procedure Cox maze and minimaze. Catheter ablation Cryoablation. ...
Alcohol septal ablation. Conduction system. Maze procedure Cox maze and minimaze. Catheter ablation Cryoablation. ... During such a study, catheters are used to access the heart and some of these catheters include electrodes that can be placed ... The catheter is inserted through the femoral vein and can have several electrodes along its length to record the direction of ... One additional form of ECG is used in clinical cardiac electrophysiology in which a catheter is used to measure the electrical ...
The ablation procedure can be classified by energy source: radiofrequency ablation and cryoablation. Catheter ablation may be ... Typically, catheter ablation is used only when pharmacologic treatment has been ineffective.[citation needed] Catheter ablation ... in a cath lab or a specialized EP lab.[citation needed] After catheter ablation the patients are moved to a cardiac recovery ... Catheter ablation involves advancing several flexible catheters into the patients blood vessels, usually either in the femoral ...
... is a procedure that is used to destroy (ablate) areas of the heart which are causing ... Ablation Catheter Accessory Pathway. *During the procedure, you will lie on a padded X-ray table. You will have a blood ... If one of the many arrhythmias that are curable with ablation is identified, a catheter is guided to the site of the abnormal ... Catheter ablation plays an important role in the management of most types of cardiac arrhythmias. ...
Simplified catheter ablation could slash waiting lists for atrial fibrillation patients A day case catheter ablation procedure ... Loyola tests new catheter ablation system that can reach deeper into heart muscle Loyola Medicine is among two centers in the ... Catheter ablation better than drug therapy for reducing AFib episodes, but not for reducing death Atrial fibrillation is a ... Catheter ablation provides better outcomes for AF patients than conventional drug therapies Every year millions of people ...
Catheter ablation for cardiac arrhythmias. BMJ 2001; 322 doi: https://doi.org/10.1136/bmj.322.7286.613/a (Published 10 March ... Ablation should not be denied to elderly patients on basis of age. *David Bourne ([email protected]), specialist ...
I had my third ablation in February for recurring Atrial Fibrillation, since then my condition has worsen, to where I have had ... Catheter Ablation Leonard834 I had my third ablation in February for recurring Atrial Fibrillation, since then my condition has ... Catheter Ablation. I had my third ablation in February for recurring Atrial Fibrillation, since then my condition has worsen, ... My ablation was in January 08, however I was told in 2006 I needed an ablation because my a-fib was a very rapid a-fib and it ...
The apparatus includes an ablation catheter and an expansible member. The expansible member is attached to the ablation ... The ablation catheter of the present invention provides for advanced ablation catheters and techniques of thermal ablation ... The ablation catheter is suitable thermal ablation, pressure ablation without a thermal component, or combined thermal plus ... 3 is a view of an ablation catheter inside a uterine cavity. The ablation catheter in partially enclosed by a hysteroscope and ...
Catheter ablation is an important therapy for atrial and ventricular arrhythmias. Catheter ablation is now an established first ... Advanced Catheter Ablation. Start Date:. Saturday, 23 September, 2017. End Date:. Tuesday, 26 September, 2017 12:00pm. ... discussing detailed patient cases provide a step-by-step analysis and in-depth review of approaches to catheter ablation for ... the spectrum of cardiac arrhythmias including atrial fibrillation, complex atrial arrhythmias after AF ablation or in ...
4. Balloon-Based Ablation Catheter Point-to-point ablation using a focal catheter for PV isolation is associated with technical ... After ablation, AF burden was reduced from 26% to 9%. 5.3. Complications of Cryoballoon Catheter Ablation. Phrenic nerve ... Another study, the Freeze AF trial, is being planned to compare cryoballoon catheter ablation with open-irrigation RF ablation ... Comparison with Conventional Radiofrequency Catheter Ablation. Both conventional focal RF ablation and cryoablation are used ...
According to one aspect of the present invention, an ablation catheter includes an elongated flexible tubular member that is ... The catheter also includes a monopole antenna with tip section and a body section that includes a distal end and a proximal end ... antenna that is arranged to provide a relatively uniform electric field and a method for using such an ablation catheter ... produce a relatively uniform electric field around the monopole antenna which is sufficiently strong to cause tissue ablation. ...
A meta-analysis of randomized controlled trials found that catheter ablation was superior to conventional drug therapy alone ... Catheter ablation superior to standard drug. American College of Physicians. Journal. Annals of Internal Medicine. Keywords. * ... Catheter ablation is an established therapeutic strategy for atrial fibrillation, but guidelines recommend caution in certain ... The benefits and harms of catheter ablation versus drug therapy for patients with atrial fibrillation have not been firmly ...
Does anyone know how long is the typical recovery period from a catheter ablation for tachycardia? And how long it will take to ... Catheter Ablation Recovery Period vbluraschi Does anyone know how long is the typical recovery period from a catheter ablation ... Catheter Ablation Recovery Period. Does anyone know how long is the typical recovery period from a catheter ablation for ... I had a ablation just over a month ago now. I had to have 2 weeks off work as my groin area on my right leg was very painful ...
Catheter ablation is widely accepted as an effective and safe form of therapy for cardiac arrhythmia. In many instances this ... Progress in Catheter Ablation. Clinical Application of New Mapping and Ablation Technology. ... Catheter ablation is widely accepted as an effective and safe form of therapy for cardiac arrhythmia. In many instances this ... Radiofrequency Linear Ablation Using Looped Multipolar Catheters Boaz Avitall, Arvydas Urbonas, Dalia Urboniene, Scott C. ...
The location of this ablation target is determined by a process called mapping, in which the ablation catheter is moved from ... A catheter with a large electrode at its tip is in contact with the focus; after ablation (right), the area of the focus has ... Figure 2. Ablation of an SVT. Two electrocardiographic recordings (ECG) and a recording from a catheter in the atrium are shown ... What Types of Problems Are Treated by Catheter Ablation?. CA can be used to treat a wide variety of tachycardias, which can ...
AVNRT Ablation, Atrial Flutter Ablation, Atrioventricular Reciprocating Tachycardia Ablation, AVRT Ablation, Atrial Catheter ... Cardiac Catheter Ablation, Cardiac Ablation, Atrial Fibrillation Ablation, Supraventricular Tachycardia Ablation, Atrial ... Ablation, Catheter, Catheter Ablation, ABLATION CATH, CATH ABLATION, catheter ablation, catheter ablation (treatment), ablation ... ablation catheter, ablations catheter, ablations cardiac, cardiac ablation, Cardiac Ablation, Catheter ablation, Cardiac ...
Catheter ablation is usually performed by an electrophysiologist (a specially trained cardiologist) in a cath lab or a ... Catheter ablation involves advancing several flexible catheters into the patients blood vessels, usually either in the femoral ... Catheter ablation of most arrhythmias has a high success rate. Success rates for WPW syndrome have been as high as 95% [1] For ... Catheter ablation is a procedure used to remove or terminate a faulty electrical pathway from sections of the hearts of those ...
Catheter-ablation treatment is related to, but distinct from, surgical ablation, which was the subject of a Page One article in ... Catheter ablation can help, he said. Douglas L. Packer, a Mayo Clinic cardiologist, also presented early results of a planned ... Ablation redirects electricity onto its proper path.. *The catheter typically is inserted into the femoral vein in the groin ... Catheter ablation may treat some patients who have atrial fibrillation.. *In atrial fibrillation, the hearts electrical ...
The catheter is characterized in having a tip member which during the initial placement of the catheter within the vascular ... A RF ablation catheter for removing athero-stenotic lesions or modifying the tissue characteristics of the interior walls of ... the ablation catheter with means for deploying electrodes following the positioning of the distal end of the ablation catheter ... an important aspect of the ablation catheter of the present invention is that as the catheter is being routed through the ...
... and ablation, wherein a flexible electrode catheter, having a tip electrode with suspension structure, is pre-shaped to snugly ... A catheter-based method for coronary sinus mapping, pacing, ... Ablation Frontiers, Inc.. Atrial ablation catheter and method ... Curved ablation catheter. US20050267460 *. May 27, 2004. Dec 1, 2005. Roop John A. Ablation catheter with suspension system ... Medtronic Ablation Frontiers Llc. Ablation catheter. US8771269. May 8, 2008. Jul 8, 2014. Medtronic Ablation Frontiers Llc. RF ...
Minimally-invasive surgery to correct drug refractory atrial fibrillation appears to work better than catheter-based ablation ... Surgical ablation was significantly better than catheter ablation. A higher percentage of surgically treated patients were free ... Source Reference: Boersma L, et al "Atrial fibrillation catheter ablation versus surgical ablation treatment (FAST): a 2-center ... This small randomized trial compared catheter-based ablation and open surgical ablation for atrial fibrillation. All subjects ...
Jude Medical to initiate a clinical trial of the companys Duo irrigated ablation catheter for treatment of atrial fibrillation ... 1 between the companys Duo 12 port open irrigated catheter ablation system and an irrigated catheter ablation system that has ... Duo Ablation Catheter Going on Trial. February 3rd, 2010 Editors Cardiac Surgery, Cardiology ... The IRASE AF trial is the industrys first and the largest head-to-head IDE trial studying irrigated ablation catheters, which ...
Gordys heart doctor talked to him about catheter ablation, and specifically the Arctic Front® Cardiac CryoAblation Catheter, ... Catheter ablation is a minimally-invasive procedure in which energy terminates (ablates) the abnormal electrical pathways in ... The Arctic Front cryoablation catheter is a flexible thin tube that is maneuvered through a vessel into the left atrium. Once ... positioned in the heart, the balloon portion of the catheter is filled with a coolant which applies subzero temperatures to the ...
... with ablation catheters from Medtronic, is a minimally invasive procedure to treat atrial fibrillation. ... your doctor may recommend catheter ablation. Catheter ablation is a minimally invasive procedure that may lessen the number of ... there are benefits and risks with catheter ablation. An important benefit of successful catheter ablation is that you may ... Catheter ablation is a minimally invasive procedure in which the doctor threads a flexible thin tube (catheter) through the ...
Catheter Ablation at University of Maryland. Our program offers several advantages when it comes to catheter ablation:. * ... Heart Ablation Effectiveness. While it still depends on the type of arrhythmia, we are increasingly using catheter ablation for ... Catheter ablation provides a minimally invasive option when other approaches - such as regular checkups, lifestyle changes, ... A standard form of such ablation uses thin tubes (catheters) to reach the heart from a blood vessel. ...
Catheter Ablation of Ventricular Tachycardia Beneath an Endoventricular Patch Michifumi Tokuda, Jaimie Manlucu, Scott Brancato ... Wolff-Parkinson-White Syndrome in the Era of Catheter AblationCLINICAL PERSPECTIVEInsights From a Registry Study of 2169 ... Surgical Septal Myectomy Versus Alcohol Septal AblationAssessing the Status of the Controversy in 2014 Barry J. Maron and Rick ...
... called catheter ablation, for atrial fibrillation if medicine is not effective or not tolerated. Also discusses implanting a ... Should I Have Catheter Ablation?. AV node ablation. AV node ablation is a slightly different type of ablation procedure for ... catheter ablation did not stop your atrial fibrillation, or you cannot have catheter ablation. With AV node ablation, the ... Catheter Ablation for Atrial Fibrillation. Treatment Overview. Catheter ablation is a minimally invasive procedure to treat ...
Radiofrequency Catheter Ablation synonyms, Radiofrequency Catheter Ablation pronunciation, Radiofrequency Catheter Ablation ... English dictionary definition of Radiofrequency Catheter Ablation. n. 1. Surgical excision or amputation of a body part or ... Related to Radiofrequency Catheter Ablation: Radiofrequency ablation. ab·la·tion. (ă-blā′shən). n.. 1. Surgical excision or ... ablation. (redirected from Radiofrequency Catheter Ablation). Also found in: Thesaurus, Medical, Acronyms, Encyclopedia. ...
First line catheter ablation or drugs for paroxysmal atrial fibrillation? BMJ 2012; 345 :e7274 ... First line catheter ablation or drugs for paroxysmal atrial fibrillation?. BMJ 2012; 345 doi: https://doi.org/10.1136/bmj.e7274 ... with symptomatic paroxysmal atrial fibrillation can choose between antiarrhythmic drugs and radiofrequency catheter ablation. ...
PURPOSE OF REVIEW: Ablation for atrial fibrillation has become a widely accepted and practiced treatment for this arrhythmia. ... However, the technique for ablation has evolved over time, particularly... ... the outcome of catheter ablation is less efficacious. It is widely believed that additional ablation targeting the substrate of ... The techniques for catheter ablation of paroxysmal and persistent atrial fibrillation: a systematic review. *Verma A ...
We use advanced catheter ablation techniques to treat more than 700 patients with arrhythmia including atrial fibrillation and ... Catheter Ablation. Dukes electrophysiology program uses advanced catheter ablation techniques to treat more than 700 patients ... New, Better Ways to Perform Catheter Ablation Catheter ablation is a minimally invasive procedure that uses energy to destroy ... CATHETER ABLATION Techniques * Irrigated Radiofrequency A widely used ablation technique that uses heat to create a larger ...
... hefty proceeds over 2018-2024: Johnson & Johnson, Japan Lifeline ... o EP ablation catheters. o Radiofrequency (RF) ablation catheters. o Cryoablation catheters. o Laser. o Others. o EP diagnostic ... Product segment of electrophysiology market includes ablation catheters, diagnostic catheters and electrophysiology laboratory ... EP ablation catheters held largest market share of around 48.2% in 2017 owing to increasing prevalence of atrial fibrillation, ...
  • In a radiofrequency ablation, electrophysiologists pinpoint the area and then use radio wave energy to "cauterize" the tiny part of the heart muscle causing the abnormal heart rhythm. (hopkinsmedicine.org)
  • radiofrequency ablation and cryoablation . (wikipedia.org)
  • Our four, fully equipped electrophysiology laboratories have actively cooled radiofrequency ablation technologies that give electrophysiologists greater control and greater success. (dukehealth.org)
  • Radiofrequency ablation is immediately successful in more than 90% of cases and avoids the long-term toxicity observed with antiarrhythmic drugs. (medscape.com)
  • In patients who have failed antiarrhythmic therapy or who have failed radiofrequency ablation and who are symptomatic, palliative therapy with AV-His Bundle ablation can eliminate rapid ventricular rates, but it does require a permanent pacemaker to be placed, as this procedure creates third-degree heart block. (medscape.com)
  • Impact of cavotricuspid isthmus morphology in CRYO versus radiofrequency ablation of typical atrial flutter. (medscape.com)
  • Covidien (NYSE: COV), a leading global provider of healthcare products, announced the expansion of its portfolio of radiofrequency ablation (RFA) catheters with the launch of the Barrx™ Channel RFA Endoscopic. (thestreet.com)
  • Covidien (NYSE: COV), a leading global provider of healthcare products, announced the expansion of its portfolio of radiofrequency ablation (RFA) catheters with the launch of the Barrx™ Channel RFA Endoscopic Catheter for treating Barrett's esophagus and certain gastrointestinal bleeding disorders 1 . (thestreet.com)
  • Radiofrequency ablation terminated atrial fibrillation in 12 of 77 patients randomized to ablation, while the remaining 65 patients had sinus rhythm restored after ablation by administration of ibutilide or transthoracic cardioversion. (medpagetoday.com)
  • This procedure is also called radiofrequency ablation. (texasheart.org)
  • The area of heart muscle at the affected site is then destroyed using either heat (radiofrequency ablation) or by freezing (cryoablation). (bhf.org.uk)
  • Radiofrequency ablation as initial therapy in paroxysmal atrial fibrillation. (bmj.com)
  • Catheter ablation for the treatment of paroxysmal atrial fibrillation: A pulmonary vein isolation procedure will be performed using radiofrequency ablation. (clinicaltrials.gov)
  • Radiofrequency ablation could be described as a thermal strategy to destroy a tissue by increasing its temperature and causing anirreversible cellular injury. (psu.edu)
  • Radiofrequency ablation is a relatively new modality which has found use in a wide range of medical applications and gained acceptance. (psu.edu)
  • Researchers randomized participants to either radiofrequency ablation (146) or an anti-arrhythmic drug (148). (healthcanal.com)
  • Twenty-two radiofrequency ablation patients (15 percent) had AF compared to 43 (29 percent) treated with drugs. (healthcanal.com)
  • Of the patients primarily treated with ablation, 13 needed supplementary drugs and 54 patients who didn't improve with drugs underwent supplementary radiofrequency ablation. (healthcanal.com)
  • Radiofrequency ablation with the THERMOCOOL ablation catheter resulted in a clinically significant improvement in the quality of life (QOL) of the patients. (medicaldevice-network.com)
  • Ninety-four patients (age: 56 +/- 10 years) with AF (paroxysmal 46, persistent 48) underwent wide encirclement of ipsilateral PV pairs using irrigated radiofrequency ablation with the endpoint of electrical isolation. (nih.gov)
  • DUBLIN - April 21, 2016 - Medtronic (NYSE: MDT) today announced the launch of the new Barrx TM 360 Express radiofrequency ablation (RFA) balloon catheter, which can help in the treatment of Barrett's esophagus. (bioflorida.com)
  • Radiofrequency Ablation vs Endoscopic Surveillance for Patients With Barrett Esophagus and Low-Grade Dysplasia: A Randomized Clinical Trial. (bioflorida.com)
  • Catheter ablation is a procedure that is used to destroy (ablate) areas of the heart which are causing arrhythmias . (hopkinsmedicine.org)
  • A diagnostic EP study (described above) is always performed as part of the catheter ablation procedure to accurately diagnose the heart rhythm abnormality. (hopkinsmedicine.org)
  • A day case catheter ablation procedure which includes only the bare essentials and delivers the same outcomes could slash waiting lists for atrial fibrillation patients, according to late-breaking results from the AVATAR-AF trial presented today at EHRA 2019, a European Society of Cardiology congress. (news-medical.net)
  • New research shows that catheter ablation, a common cardiovascular procedure, appears no more effective than drug therapy to prevent strokes, deaths and other complications in patients with atrial fibrillation. (news-medical.net)
  • The cryoballoon catheter was recently approved for this procedure. (hindawi.com)
  • Also summarized here are the publications describing the clinical experience with the cryoballoon catheter ablation in both paroxysmal and persistent atrial fibrillation, its safety and efficacy, and discussions on the technical aspect of the cryoballoon ablation procedure. (hindawi.com)
  • The main goal in catheter ablation is complete electrical isolation of the PVs, and therefore the success of the procedure and the reduction of procedure-related complications require careful identification of the PV ostia and application of ablation to the PV antra. (hindawi.com)
  • Catheter ablation is a procedure used to remove or terminate a faulty electrical pathway from sections of the hearts of those who are prone to developing cardiac arrhythmias such as atrial fibrillation , atrial flutter , supraventricular tachycardias (SVT) and Wolff-Parkinson-White syndrome (WPW syndrome). (wikipedia.org)
  • Medtronic said the catheter patients' strokes weren't related to the procedure. (wsj.com)
  • The invited discussant, A. Marc Gillinov, MD, a staff thoracic surgeon at the Cleveland Clinic, noting that nearly 40% of patients who undergo catheter ablation do well after 12 months, suggested that many patients might opt for the catheter procedure first because it does not rule out having a surgical operation if fibrillation recurs. (medpagetoday.com)
  • He noted that the majority of patients in the study had a catheter procedure previously and that procedure had failed to control atrial fibrillation. (medpagetoday.com)
  • Eventually 66 patients were assigned to catheter ablation and 63 were assigned to the surgical procedure. (medpagetoday.com)
  • 73.8% of those getting surgery were seeking treatment following a previously unsuccessful catheter procedure. (medpagetoday.com)
  • The procedure time was faster in the patients undergoing catheter ablation. (medpagetoday.com)
  • The IRASE AF trial is the industry's first and the largest head-to-head IDE trial studying irrigated ablation catheters, which use radiofrequency (RF) energy in a non-invasive procedure to destroy abnormal heart tissue. (medgadget.com)
  • Catheter ablation is a minimally-invasive procedure in which energy terminates (ablates) the abnormal electrical pathways in the heart tissue that are causing atrial fibrillation. (medtronic.com)
  • Catheter ablation is a minimally invasive procedure that may lessen the number of episodes or treat your atrial fibrillation. (medtronic.com)
  • Catheter ablation is a minimally invasive procedure in which the doctor threads a flexible thin tube (catheter) through the blood vessels to your heart to terminate (ablate) abnormal electrical pathways in the heart tissue. (medtronic.com)
  • As with any medical procedure, there are benefits and risks with catheter ablation. (medtronic.com)
  • AV node ablation is a slightly different type of ablation procedure for atrial fibrillation. (rexhealth.com)
  • You might feel symptoms, such as palpitations, after the ablation procedure. (rexhealth.com)
  • If they do not go away after a few months, you may need a second ablation procedure. (rexhealth.com)
  • Catheter ablation is a minimally invasive procedure that uses energy to destroy tiny areas of the heart muscle that produce an arrhythmia or abnormal heart rhythm. (dukehealth.org)
  • Computerized catheter mapping, combined with sophisticated imaging, helps us determine exactly which locations within the heart are causing the arrhythmia to target for ablation, and increases the accuracy of the procedure. (dukehealth.org)
  • We are one of the few centers with substantial experience in this complex procedure, which involves mapping and ablation of the epicardium (area outside of the heart) for the 15 to 20 percent of patients whose ventricular arrhythmia occur on the heart's outer surface. (dukehealth.org)
  • Catheter Ablation is a procedure that corrects irregular heartbeats by destroying small amounts of tissue that cause the abnormal heart rhythm. (medmovie.com)
  • During this procedure, a catheter is threaded into the heart. (medmovie.com)
  • Endoscopic surgeons and gastroenterologists can shorten procedure time with the new Channel RFA device, as this patient-centric design allows for fewer endoscope introductions and removals (compared to other Barrx catheters). (thestreet.com)
  • The ablation procedure will then be performed as usual. (clinicaltrials.gov)
  • Cardiac Electrophysiologist Jaime Molden explains the new guidelines for treating atrial fibrillation with catheter ablation-an invasive, nonsurgical procedure that may reduce patient reliance on toxic medications. (prweb.com)
  • Catheter ablation for Afib first became a viable treatment option in the early 1990s, and researchers and cardiologists have studied its efficacy ever since, fine-tuning the procedure throughout the process. (prweb.com)
  • Patients with paroxysmal Afib can achieve excellent results with a single ablation procedure. (prweb.com)
  • In the procedure, we use several different diagnostic catheters and an ablation catheter to map out and treat the areas of the heart that are causing the abnormal rhythm. (prweb.com)
  • Catheter ablation is a procedure where energy is used to treat the site of an arrhythmia. (texasheart.org)
  • The procedure is performed in the cardiac catheterization angiography suite (also called the cath lab) or the electrophysiology lab. (texasheart.org)
  • The shortest ablation can take as little as 15 minutes, whereas a more difficult and complex procedure can take three or four hours. (bhf.org.uk)
  • However, this slight improvement came at the price of one death in the ablation group due to a procedure-related stroke and there were also three cases of cardiac tamponade. (bmj.com)
  • Echocardiography must be performed after the ablation procedure to investigate pericardial effusion. (bmj.com)
  • Endosense's TactiCath Quartz is designed to shorten cardiac ablation procedure times and deliver better outcomes, according to the company. (massdevice.com)
  • Cardiac ablation is a procedure used to correct irregular heartbeats by destroying the tissue that creates the abnormal electrical signals. (medmovie.com)
  • Catheter ablation is used in patients with atrial fibrillation to restore and maintain the heart's normal rhythm, but the procedure has an inherent risk of stroke, bleeding, acute brain lesions, and potentially of cognitive impairment. (eurekalert.org)
  • Professor Kirchhof noted that patients in the trial were four years older than participants of previous studies with the NOACs rivaroxaban5 and dabigatran.6 Other features of the trial were that local investigators chose the VKA and catheter ablation procedure which led to the use of a variety of drugs and techniques. (eurekalert.org)
  • Catheter ablation-a procedure that treats the heart rate problem called supraventricular tachycardia (SVT)-might be done if you have symptoms that bother you a lot and you do not want to take medicine, or medicine has not worked. (healthwise.net)
  • Catheter ablation is a minimally invasive procedure used to remove or destroy faulty electrical pathways from sections of the heart that promote irregular cardiac rhythms (also known as cardiac arrhythmias). (pitchengine.com)
  • BACKGROUND: Percutaneous catheter ablation in the posterior left atrium (LA) is a technically demanding procedure that in our experience is best accomplished using general anesthesia, including endotracheal intubation and mechanical ventilation. (biomedsearch.com)
  • We hypothesized that use of high-frequency jet ventilation (HFJV), a low-volume, fast-rate technique, would reduce posterior LA motion and thus facilitate the ablation procedure. (biomedsearch.com)
  • RESULTS: Fewer ablation lesions were required in the HFJV group because of fewer incidences of ablation electrode dislodgment, resulting in significantly decreased procedure time. (biomedsearch.com)
  • When the procedure is done, the catheters are removed. (baycare.org)
  • Catheter ablation of AF is a challenging and complex procedure, which is not free of the risk of potentially life-threatening complications, such as an atrio-oesophageal fistula, stroke, and cardiac tamponade. (nih.gov)
  • When radiofrequency catheter ablation was first introduced in the late 1980s, few would have predicted that catheter ablation of AF would emerge as the most commonly performed ablation procedure in most major hospitals. (nih.gov)
  • However, no studies have been conducted comparing catheter with thoracoscopic ablation in patients with persistent AF as a primary invasive procedure after failing treatment with anti-arrhythmic medication. (clinicaltrials.gov)
  • I have performed thousands of AFib ablation procedures over the past two decades, and I have never had a patient die as a result of the procedure. (cardiovascularbusiness.com)
  • At the end of the day, this is a very important study that should serve as a wake-up call to all electrophysiologists who perform AFib ablation, all cardiologists who refer patients for this procedure, and all patients who are considering undergoing AFib ablation," he wrote. (cardiovascularbusiness.com)
  • What is clear is that AFib ablation is not a benign procedure, and mortality is a very real complication. (cardiovascularbusiness.com)
  • What Is a Cardiac Ablation Procedure? (utah.edu)
  • Cardiac ablation is a minimally-invasive procedure that involves inserting catheters into your blood vessel and threading wires up into your heart. (utah.edu)
  • You may need some tests before your ablation procedure. (utah.edu)
  • This test looks for blood clots in your heart and needs to be done 24-48 hours before your ablation procedure. (utah.edu)
  • If there is a clot found in your heart, we will reschedule your ablation procedure. (utah.edu)
  • NEW YORK (Reuters Health) - Ablation of atrial fibrillation by combining the transvenous catheter approach with the thoracoscopic epicardial approach in a single procedure has a high success rate and is safe, according to a report from a Dutch team. (thedoctorschannel.com)
  • In the new study, 71 percent of patients treated with a surgical procedure called catheter ablation were free of atrial fibrillation, the study's primary endpoint, after two years of follow-up, while only 34 percent of patients who took the antiarrhythmic drug Amiodarone were free of symptoms at that point. (healthcanal.com)
  • The researchers randomly assigned half of the patients to undergo catheter ablation, a surgical procedure in which doctors thread thin, flexible wires into the heart through blood vessels in the arm, groin or neck. (healthcanal.com)
  • Di Biase said the type and extent of the ablation procedure had a marked impact on the procedure's success rate. (healthcanal.com)
  • In addition, many patients in the study required more than one ablation procedure to achieve freedom from atrial fibrillation. (healthcanal.com)
  • These catheters can ablate a larger area of tissue than single point radiofrequency energy catheters, which could decrease procedure times. (stopafib.org)
  • No complications were observed and 82% of the patients discontinued anti-arrhythmic drug therapy and were free of atrial fibrillation 9 months (+/- 2 months) following a single ablation procedure. (biospace.com)
  • Use of the GENius generator and a single PVAC catheter for mapping, ablating and confirming isolation reduces the risk of complications and streamlines the procedure by eliminating the need for elaborate mapping and imaging technology. (biospace.com)
  • Ablation therapy restored the heart to normal rhythm in 94% of the patients on the day of the procedure, with an average procedure time of 144 minutes (+/- 44 minutes) following transseptal puncture. (biospace.com)
  • The databook report provides procedure volumes within segments - Electrophysiology Diagnostic Catheters Procedures and Electrophysiology Ablation Catheters Procedures. (reportlinker.com)
  • These new features provide for a reduction in surgery time 2,5 and the number of catheters required during RFA procedures, allowing me to concentrate on increasing the quality of the procedure. (bioflorida.com)
  • CHICAGO, IL--(Marketwire - April 21, 2009) - This Heart Rhythm Society live webcast will feature video of an ablation procedure for a patient left atrial tachycardia post atrial fibrillation ablation procedure. (marketwired.com)
  • Catheter ablation plays an important role in the management of most types of cardiac arrhythmias. (hopkinsmedicine.org)
  • If one of the many arrhythmias that are curable with ablation is identified, a catheter is guided to the site of the abnormal heart rhythm. (hopkinsmedicine.org)
  • Johnson & Johnson Medical Devices Companies announced today that Biosense Webster, Inc., a worldwide leader in the diagnosis and treatment of heart arrhythmias, has completed patient enrollment in its U.S. Investigational Device Exemption study of the THERMOCOOL SMARTTOUCH SF Catheter. (news-medical.net)
  • Catheter ablation is an important therapy for atrial and ventricular arrhythmias. (drugs.com)
  • This course will provide comprehensive instruction for diagnosing common and complexcardiac arrhythmias in the electrophysiology laboratory and achieving effective and safe ablation. (drugs.com)
  • Experts discussing detailed patient cases provide a step-by-step analysis and in-depth review of approaches to catheter ablation for the spectrum of cardiac arrhythmias including atrial fibrillation, complex atrial arrhythmias after AF ablation or in congenital heart disease, atrial tachycardias and atypical flutters, and ventricular arrhythmias with and without associated heart disease. (drugs.com)
  • Catheter ablation is a therapy that is becoming more widely used for the treatment of medical problems such as cardiac arrhythmias, cardiac disrhythmias, and tachycardia. (google.com)
  • Catheter ablation of most arrhythmias has a high success rate. (wikipedia.org)
  • The results indicate that, in atrial fibrillation patients with dilated left atrial and hypertension or failed prior catheter ablation, surgical ablation is superior in achieving freedom from left atrial arrhythmias after 12 months of follow-up at the cost of a higher procedural serious adverse event rate," Boersma said in his oral presentation. (medpagetoday.com)
  • We specialize in using ablation to treat complex arrhythmias. (umm.edu)
  • Moreover, on-going research activities pertaining to investigating appropriateness and applicability of different ablation modalities to treat and reduce recurrence rate of cardiac arrhythmias should boost industry size growth over the coming years. (openpr.com)
  • Twenty to 30 consecutive patients with ventricular arrhythmias due to ischemic heart disease or dilated cardiomyopathy undergoing VT ablation will be included in a prospective, one-center, non-randomized study. (clinicaltrials.gov)
  • Catheter ablation is used to treat a wide variety of cardiac arrhythmias. (texasheart.org)
  • 2009). EHRA/HRS expert consensus on catheter ablation of ventricular arrhythmias. (cigna.com)
  • Catheter ablation is a drug-free solution for a wide range of abnormal heart rhythms (arrhythmias). (bhf.org.uk)
  • Cardiac Electrophysiology and Catheter Ablation is the first handbook-sized practical training guide for medical, technical and industry personnel needing easily accessible, detailed information on the theory and practice of modern invasive investigation and treatment of cardiac arrhythmias. (alibris.com)
  • EP ablation catheters are devices used to treat cardiac arrhythmias. (pitchengine.com)
  • The presence of structural heart disease (SHD) during catheter ablation (CA) for ventricular arrhythmias (VA) increased the complication rate of major and any complications by approximately 3-fold for both and the hospital mortality by ≥20-fold compared to patients without SHD. (mdedge.com)
  • Comparison of complications of catheter ablation for ventricular arrhythmias in adults with and without structural heart disease. (mdedge.com)
  • Radiofrequency catheter ablation of cardiac arrhythmias were investigated using a finite-element based solution of bioheat transfer equation. (psu.edu)
  • Recurrent arrhythmias can be handled with AADs [antiarrhythmic drugs] or CA [catheter ablation]," Dr. Laurent Pison, at Maastricht University Medical Center and Cardiovascular Research Institute, and colleagues note in their paper in the July 3 issue of the Journal of the American College of Cardiology. (thedoctorschannel.com)
  • Therefore, global cardiac electrophysiology professional societies undertook to outline recommendations and best practices for these procedures in a document that will update and replace the 2009EHRA/HRS Expert Consensus on Catheter Ablation of Ventricular Arrhythmias. (medworm.com)
  • The INTELLATIP MIFI™ OI Ablation Catheter delivers the critical, multi-dimensional information you need to confidently diagnose and treat complex cardiac arrhythmias and provide the true picture of exactly what is happening at the tip of the ablation catheter in real-time. (bostonscientific.com)
  • Once the abnormal areas in the heart from which the arrhythmias originate are found, radiocatheter ablation is used to destroy them by applying a high frequency electrical impulse via a special catheter (ablation catheter) that generates intense localised heat destroying all the cells in that area. (vetspecialists.co.uk)
  • Whether you are in the lab or the office, stay current in the ever-evolving field of electrophysiology with Catheter Ablation of Cardiac Arrhythmias . (indigo.ca)
  • Founded in 2004, Ablation Frontiers is dedicated to helping individuals suffering from AF and other cardiac arrhythmias. (biospace.com)
  • Meta-analysis of zero or near-zero fluoroscopy use during ablation of cardiac arrhythmias. (springer.com)
  • Near zerO fluoroscopic exPosure during catheter ablAtion of supRavenTricular arrhYthmias: the NO-PARTY multicentre randomized trial. (springer.com)
  • The spectrum of treated arrhythmias changed over time, with a gradual increase in AF, VT, and PVC ablation (Pamp;lt;0.001). (diva-portal.org)
  • Duke's electrophysiology program uses advanced catheter ablation techniques to treat more than 700 patients with arrhythmia, including atrial fibrillation and ventricular tachycardia, each year. (dukehealth.org)
  • Technological advancements in electrophysiology devices such as ablation catheters and devices used for mapping and navigational technologies will escalate adoption rate, thereby fueling industry growth. (openpr.com)
  • Growing preference towards early disease diagnosis and treatment will further accelerate demand for electrophysiology diagnostic catheters. (openpr.com)
  • Product segment of electrophysiology market includes ablation catheters, diagnostic catheters and electrophysiology laboratory devices. (openpr.com)
  • Technological advancements coupled with increasing research activities pertaining to development of innovative ablation techniques will drive U.S. electrophysiology market. (openpr.com)
  • Electrophysiology catheter ablation is one of the most commonly performed cardiovascular intervention in the country. (openpr.com)
  • The facility is a rapid-prototyping, development and pilot facility that expands the company's ability to provide customers with electrophysiology and neuromuscular catheters and complex delivery systems for structural heart and vascular applications. (massdevice.com)
  • ReportsnReports.com adds report Global Electrophysiology Ablation Catheters Market 2014-2018 to its store. (pitchengine.com)
  • Analysts forecast the Global Electrophysiology Ablation Catheters market to grow at a CAGR of percent over the period 2013-2018. (pitchengine.com)
  • The Global Electrophysiology Ablation Catheters market can be segmented into five divisions: RF Ablation EP Catheters, Cryoablation EP Catheters, Laser Ablation Systems, Microwave Ablation EP Catheters, and Navigational Advanced Mapping Accessories. (pitchengine.com)
  • Global Electrophysiology Ablation Catheters Market 2014-2018, has been prepared based on an in-depth market analysis with inputs from industry experts. (pitchengine.com)
  • it also covers the Global Electrophysiology Ablation Catheters market landscape and its growth prospects in the coming years. (pitchengine.com)
  • During the electrophysiology study the location of these pathways is identified and subsequently destroyed with radiocatheter ablation. (vetspecialists.co.uk)
  • WPW ablation is one of the most rewarding procedures performed in electrophysiology. (springer.com)
  • CA works by delivering energy through an electrode at the end of a catheter that has been threaded through a vein or artery to the heart. (ahajournals.org)
  • 4. The catheter for mapping the electrical conduction pattern of the coronary sinus in the right atrium of the heart of claim 1 further comprising a reference electrode, wherein the reference electrode is located about 30-40 cm from the distal end of the elongate tubular element. (google.com)
  • 5. The catheter for mapping the electrical conduction pattern of the coronary sinus in the right atrium of the heart as in claim 1, wherein the suspension means includes a coil at a proximal end of the tip electrode. (google.com)
  • The device, which already has the European CE mark, features twelve irrigation ports that should provide better cooling of the electrode during ablation. (medgadget.com)
  • 2 . The irrigated ablation electrode assembly of claim 1 , wherein the electrode forms at least a portion of the shield, and wherein the electrode comprises an electrically conductive material that is substantially less oxidizable than the permanent magnet. (google.de)
  • 3 . The irrigated ablation electrode assembly of claim 2 wherein the electrically conductive material is selected from the group consisting of platinum, gold, tantalum, iridium, stainless steel, palladium, and mixtures thereof, and wherein the electrically conductive material is plated onto a substrate made of a biocompatible material that is substantially less oxidizable than the permanent magnet. (google.de)
  • 4 . The irrigated ablation electrode assembly of claim 1 wherein the shield comprises one or more materials selected from the group consisting of silicone, polyimide, platinum, gold, tantalum, iridium, stainless steel, palladium, and mixtures thereof. (google.de)
  • 5 . The irrigated ablation electrode assembly of claim 1 wherein the permanent magnet comprises NdFeB. (google.de)
  • 6 . The irrigated ablation electrode assembly of claim 1 further comprising at least one mapping electrode spaced proximally from the electrode which is a distal electrode capable of ablation. (google.de)
  • 7 . The irrigated ablation electrode assembly of claim 1 wherein the electrode is disposed at a distal portion of the electrode assembly, and wherein the electrode assembly further comprises a proximal portion which includes at least one proximal passageway for a fluid with an outlet disposed at an external surface of the proximal portion. (google.de)
  • 8 . The irrigated ablation electrode assembly of claim 7 wherein the proximal portion comprises a material which is electrically nonconductive and has a lower thermal conductivity than a material of the electrode. (google.de)
  • 9 . The irrigated ablation electrode assembly of claim 7 wherein the at least one proximal passageway extends toward the electrode at an acute angle with respect to the longitudinal axis of the proximal portion. (google.de)
  • 10 . The irrigated ablation electrode assembly of claim 7 wherein the proximal portion comprises a material which is electrically nonconductive, and wherein the external surface of the proximal portion and the external electrode surface of the electrode at the distal portion meet at an intersection, and wherein the at least one proximal passageway is configured to direct a fluid flow through the outlet toward a region adjacent the intersection. (google.de)
  • The innovative technology in the Channel catheter enables a 7.5mm wide electrode to easily pass through a 2.8mm diameter endoscope working channel. (thestreet.com)
  • Other features and benefits of the new device include a transparent ablation electrode for enhanced visualization and a unique rotatable shaft design that provides additional control and maneuverability. (thestreet.com)
  • A deflectable 5F bipolar electrode catheter with a 3 mm tip was used. (bmj.com)
  • An ablative catheter assembly whose electrode is completely covered by a buffer layer. (google.es)
  • In this case, the conductive fluid couples the electrode to the surrounding tissue so that RF energy will pass from the electrode to the tissue, thereby effecting ablation. (google.es)
  • 6. The ablation catheter assembly according to claim 5 , further comprising a power supply for delivering radio frequency electrical energy to the lead wire and the electrode. (google.es)
  • 7. The ablation catheter assembly of claim 1 wherein the tip forms a substantially fluid-tight enclosure at the distal end of the catheter shaft so that conductive fluid flowing into the tip forms a conductive path between the electrode and the tip. (google.es)
  • The INTELLANAV MIFI™ Open-Irrigated Catheter brings together our proprietary mini-electrode technology with the elegant Total Tip Cooling™ design and the INTELLANAV magnetic tracking for unparalleled clarity, cool performance and confident navigation in RHYTHMIA HDx™ Mapping System procedures. (bostonscientific.com)
  • The INTELLATIP MIFI™ OI Ablation Catheter combines Boston Scientific's proprietary MicroFidelity (MiFi) mini-electrode sensor technology for Unparalleled Clarity with our open-irrigated Total Tip Cooling™ design for Cool Performance . (bostonscientific.com)
  • Irrigated-tip ablation catheters overcome the limitations of non-irrigated ablation catheters by lowering the temperature of the electrode and tissue surface, thereby, increasing the efficacy of the power delivery with safety and reduced coagulum formation at the catheter tip. (pitchengine.com)
  • However, using conventional intermittent positive-pressure ventilation (IPPV) technique, we were dissatisfied with motion of the posterior LA. This occurred during changes in lung volume, which destabilized ablation electrode-endocardial contact. (biomedsearch.com)
  • Abstract-We used the finite-element method (FEM) to model and analyze the resistance between the catheter tip electrode and the dispersive electrode during radio-frequency cardiac catheter ablation for the prediction of myocardium-electrode contact. (psu.edu)
  • According to one embodiment, catheter includes a metallic cap having a plurality of apertures and at least one electrode disposed in each aperture of the plurality of apertures. (google.com)
  • Loyola Medicine is among two centers in the world offering a novel catheter ablation system intended to improve treatment outcomes for a life-threatening heart rhythm disorder called ventricular tachycardia. (news-medical.net)
  • Does anyone know how long is the typical recovery period from a catheter ablation for tachycardia? (medhelp.org)
  • Ablation indicated in symptomatic Atrial Tachycardia refractory to medical therapy (e.g. (fpnotebook.com)
  • We continually refine current practice and seek out new approaches, such as epicardial ablation for ventricular tachycardia and surgical ablation. (dukehealth.org)
  • A direct information on the force exerted by the catheter tip obtained from the SmartTouch technology might improve the assessment of the scar areas during electroanatomical mapping in patients with ventricular tachycardia (VT) due to ischemic disease or cardiomyopathy. (clinicaltrials.gov)
  • Catheter ablation can eliminate atrioventricular nodal reciprocating tachycardia (AVNRT), a type of supraventricular tachycardia, in almost all cases. (cigna.com)
  • For ventricular tachycardia, catheter ablation might make the arrhythmia happen less often or stop the arrhythmia from happening again. (cigna.com)
  • Supraventricular Tachycardia: Should I Have Catheter Ablation? (cigna.com)
  • 1999). Catheter ablation of accessory pathways, atrioventricular nodal reentrant tachycardia, and the atrioventricular junction: final results of a prospective, multicenter clinical trial. (cigna.com)
  • Catheter ablation of ventricular tachycardia: are there limits? (bmj.com)
  • Of the numerous non-surgical therapies available to treat ventricular tachycardia (VT), catheter ablation is the least practised but has great promise for increased use in the treatment of this difficult arrhythmia. (bmj.com)
  • Currently, when catheter ablation is applied to treat ventricular tachycardia (VT), the aim is to improve quality of life but not prognosis. (bmj.com)
  • OBJECTIVE: To evaluate the indications, results and complications of radiofrequency catheter ablation in small infants with supraventricular tachycardia due to an accessory atrioventricular pathway. (bmj.com)
  • Catheter ablation works well to stop supraventricular tachycardia (SVT) and the symptoms it causes. (healthwise.net)
  • In catheter ablation for atrioventricular nodal reentrant tachycardia (AVNRT), damage to the heart's conduction system requires a permanent pacemaker in about 1 out of 100 people. (cardiosmart.org)
  • Catheter ablation is a way to treat an abnormal heart rhythm (arrhythmia) in which the heart beats too fast (tachycardia). (baycare.org)
  • In many cases, one ablation is enough to treat a tachycardia. (baycare.org)
  • Before the advent of catheter ablation, curative treatment for atrial tachycardia could only be performed using open chest surgery in highly selected patients. (psu.edu)
  • Thermal energy (extreme heat) or cryoenergy (extreme cold) is then passed through the catheter to this site to destroy the problem-causing tissue. (hopkinsmedicine.org)
  • In this paper, the basics of cryothermal energy ablation are reviewed including its ability of creating homogenous lesion formation, minimal destruction to surrounding vasculature, preserved tissue integrity, and lower risk of thrombus formation. (hindawi.com)
  • The tip section and the body section are arranged to produce a relatively uniform electric field around the monopole antenna which is sufficiently strong to cause tissue ablation. (google.com)
  • More particularly, the present invention relates to a monopole tip for a catheter that enables distal fire capabilities while enabling a relatively even electromagnetic field to be created at the sides of the monopole tip to facilitate the ablation of cardiac tissue. (google.com)
  • Removal of tissue with electrical current delivered via electrodes positioned at the distal end of a catheter. (fpnotebook.com)
  • In surgical ablation, tiny bits of heart tissue also are destroyed, but in an operation that is done either through a small incision or as part of open-heart surgery. (wsj.com)
  • A RF ablation catheter for removing athero-stenotic lesions or modifying the tissue characteristics of the interior walls of selected blood vessels is described. (google.co.uk)
  • and RF energy is then applied to the coronary sinus tissue through the electrodes to cause activation mapping, and/or ablation. (google.com)
  • A widely used ablation technique that uses heat to create a larger lesion in the heart tissue more safely. (dukehealth.org)
  • Catheter ablation, aimed at burning or freezing heart tissue causing atrial fibrillation, is recommended to restore normal rhythm after failure of, or intolerance to, drug treatment. (news-medical.net)
  • The tip of the catheter is guided to the area of heart tissue that is causing the abnormal heart rhythm. (medmovie.com)
  • Then the catheter emits a pulse of painless radiofrequency energy that destroys the abnormal tissue and corrects the irregular heartbeat. (medmovie.com)
  • The Barrx line of RFA catheters is based on Covidien's proprietary technology that carefully controls the amount of RF energy delivered to remove diseased tissue, thereby allowing the growth of healthy tissue. (thestreet.com)
  • The pressure exerted by the ablation catheter on the tissue has been shown to play an important role on determining the size and the potential efficacy of the ablation lesions. (clinicaltrials.gov)
  • After catheter ablation, a patient's pulmonary veins will still fire an electric signal that would normally cause arrhythmia, but the signal cannot pass through the ablated tissue, and sinus rhythm (normal rhythm) is maintained. (prweb.com)
  • the catheter shaft includes a lumen extending therethrough, with the lumen being adapted to carry the conductive fluid from a proximal portion of the catheter shaft to the tip and wherein the tip includes flush holes which allow passage of the conductive fluid through the tip and into contact with the tissue. (google.es)
  • These catheters destroy the faulty tissue with the use heat energy generated from RF, laser and microwave radiation or by freezing the abnormal tissue. (pitchengine.com)
  • The mapping and/or ablation catheter for use in ablating the tissue in the wall forming a chamber in the heart comprising a flexible elongate tubular member having proximal and distal extremities, end cap formed of a conductive material mounted on the distal extremity of the flexible elongate tubular. (google.ca)
  • This invention relates to a mapping and/or ablation catheter for use in mapping and/or ablating tissue in the wall forming a chamber in the heart which has a tip with fixation means and method. (google.ca)
  • In general, it is an object of the present invention to provide a mapping and/or ablation catheter which can be utilized in mapping and ablating tissue in the wall forming a chamber in the heart and which is provided with fixation means for retaining the tip in a desired position on the wall of the heart. (google.ca)
  • Another object of the invention is to provide a catheter of the above character in which the fixation means can be moved between a tissue engaging position and a tissue disengaging position. (google.ca)
  • Your doctor will then use catheters with tiny electrodes attached to the end to destroy (ablate) small areas of your heart tissue that aren't using electrical signals correctly. (utah.edu)
  • Another option for stabilizing the heartbeat is delivering high frequency alternating current through a catheter to destroy the small bits of heart tissue that cause AF. (healthcanal.com)
  • A transmural lesion scar tissue that completely penetrates the heart tissue is key to a successful ablation because it keeps errant electrical signals from being transmitted. (stopafib.org)
  • It depends on the temperature generated by the energy source, how much pressure is applied to the catheter (contact force), and how long the catheter remains in contact with tissue. (stopafib.org)
  • It may be easier to make lesions using cryothermy since the cold temperatures cause tissue to stick to the catheter. (stopafib.org)
  • With laser energy, the catheter doesn't need to be in direct contact with tissue, which could mean it will have fewer complications than radiofrequency energy. (stopafib.org)
  • These catheters tell the electrophysiologist how much pressure is being applied to the catheter and tissue. (stopafib.org)
  • THERMOCOOL SMARTTOUCH SF ablation catheter improves outcomes with a more stable catheter-tissue contact force. (medicaldevice-network.com)
  • Among patients with AF undergoing catheter ablation, atrial tissue fibrosis estimated by delayed enhancement MRI was independently associated with likelihood of recurrent arrhythmia," the authors write. (empr.com)
  • With AV node ablation, the entire atrioventricular (AV) node is destroyed. (rexhealth.com)
  • In the former, success rates approaching those for ablation of accessory atrioventricular pathways can be anticipated 2-7 so that for many, usually young patients, ablation may, as with SVT, be the treatment of choice. (bmj.com)
  • After resuscitation from cardiovascular collapse, a successful radiofrequency catheter ablation (RFA) of a left free wall atrioventricular pathway was performed at 24 h of age without extracorporeal support. (biomedsearch.com)
  • The doctor threads thinner tubes (catheters) with electrodes into the sheath and toward the heart. (umm.edu)
  • The company's Globe catheter array consists of 122 individually controllable electrodes, allowing for single-shot ablation anywhere within the heart's left atrium, as well as high-definition anatomical and electrical mapping of the organ. (fiercebiotech.com)
  • Multielectrode radiofrequency catheters have several electrodes, each of which can transmit radiofrequency energy. (stopafib.org)
  • THERMOCOOL SMARTTOUCH SF ablation catheter features surround flow catheter porous tip and electrodes that deliver thermal energy to the specific region of the heart to treat AF by creating lesions. (medicaldevice-network.com)
  • Nodal ablation can control your heart rate and reduce your symptoms, but it does not prevent or cure atrial fibrillation. (rexhealth.com)
  • With catheter ablation, lesions ('burns') are made around the opening of each pulmonary vein until there is no electrical conduction into the vein. (prweb.com)
  • For the creation of controllable larger ablation lesions, cooled tipped RF delivery has already been shown to be effective 10 while alternative forms of energy delivery capable of creating large lesions, such as ultrasound, laser, microwave and percutaneous cryotherapy, are at an early stage of development. (bmj.com)
  • The present invention eliminates many of the problems associated with previous ablation catheters by providing an ablation treatment not dependent upon continuous lesions. (patents.com)
  • Intervention: Thoracoscopic surgical or catheter PVI without additional lesions. (clinicaltrials.gov)
  • They explain that catheter ablation of paroxysmal AF is effective in more than 80% of cases, and persistent AF can often be dealt with thoracoscopically by pulmonary vein isolation and creating linear lesions. (thedoctorschannel.com)
  • In addition, multielectrode catheters may be better at making contiguous lesions (lesion lines without any gaps) than single point catheters. (stopafib.org)
  • Duke has been at the forefront of discovery and uncovering new and better ways to perform catheter ablation. (dukehealth.org)
  • Although current guidelines state that is appropriate to perform catheter ablation as a first-line therapy in selected patients, in our clinical practice this is rare. (nih.gov)
  • Di Biase said another limitation of the study is that not all hospitals have the experience and equipment necessary to properly perform catheter ablation. (healthcanal.com)
  • We report a patient who has had persistent visual disturbances since she underwent catheter ablation to treat her Wolff-Parkinson-White (WPW) syndrome. (hindawi.com)
  • Among patients with heart failure and atrial fibrillation, those who underwent catheter ablation were less likely to die, be hospitalized or have recurrent atrial fibrillation than patients taking a heart rhythm regulating drug, according to a study presented at the American College of Cardiology's 64th Annual Scientific Session. (healthcanal.com)
  • In addition to having a higher rate of freedom from atrial fibrillation, participants who underwent catheter ablation also had lower rates of hospitalization and mortality during the two-year follow up. (healthcanal.com)
  • Some 633 patients in Europe and the US with atrial fibrillation and additional stroke risk factors were recruited into the study, and underwent catheter ablation. (b-s-h.org.uk)
  • Pulmonary vein isolation with catheter ablation is an effective treatment in patients with symptomatic atrial fibrillation refractory or intolerant to antiarrhythmic medications. (hindawi.com)
  • Pulmonary vein (PV) isolation with catheter ablation is one of the primary treatments for symptomatic AF refractory or intolerant to antiarrhythmic medications [ 1 ]. (hindawi.com)
  • In some cases, it may be even appropriate to perform AF ablation as first-line therapy, particularly in selected symptomatic patients with heart failure and/or reduced left ventricular ejection fraction [ 2 ]. (hindawi.com)
  • The IRASE AF pivotal study intends to determine whether or not ablation using the company's Duo 12 port open irrigated catheter system is safe and effective compared to the other market approved catheter for treatment of symptomatic paroxysmal AF. (medgadget.com)
  • It will also determine if the ablation catheter can be indicated for the treatment of symptomatic paroxysmal AF. (medgadget.com)
  • People with symptomatic paroxysmal atrial fibrillation can choose between antiarrhythmic drugs and radiofrequency catheter ablation. (bmj.com)
  • P=0.007), and more patients in the ablation group were free from any AF (85% vs. 71%, P=0.004) and from symptomatic AF (93% vs. 84%, P=0.01). (bmj.com)
  • Catheter ablation is an established therapeutic strategy for symptomatic, drug-refractory atrial fibrillation," they added. (healio.com)
  • Catheter ablation is indicated for treatment of patients with symptomatic AF in whom one or more attempts at class 1 or 3 antiarrhythmic drug therapy have failed. (nih.gov)
  • Ten ablation patients (7 percent) had symptomatic AF episodes compared to 24 (16 percent) in the drug group. (healthcanal.com)
  • PRECEPT trial is a prospective, non-randomised, multi-centre study on 381 patients with symptomatic persistent AF to assess the safety and efficacy of the THERMOCOOL SMARTTOUCH SF ablation catheter. (medicaldevice-network.com)
  • Approximately 80.4% patients treated with the THERMOCOOL ablation catheter with the CARTO VISITAG™ Module experienced freedom from symptomatic persistent AF at 15 months after treatment, while 86% of the patients experienced freedom from repeat procedures at 15 months. (medicaldevice-network.com)
  • Read about the experiences of people who have received catheter ablation for atrial fibrillation. (medtronic.com)
  • The study evaluated 63 patients who had the catheter procedures and 61 who underwent surgery. (medpagetoday.com)
  • In 98.2% of the catheter procedures and in 98.3% of the surgeries, pulmonary vein isolation was performed. (medpagetoday.com)
  • Learn more about surgical CryoMaze ablation , including hybrid procedures. (umm.edu)
  • For example, we performed one of the region's first laser balloon ablation procedures, which uses a laser to ablate an arrhythmia like atrial fibrillation. (dukehealth.org)
  • Finally, they noted that one third of the patients required additional ablation procedures, even in the hands of these skilled physicians. (medpagetoday.com)
  • When symptoms persist, more catheter ablation procedures can often get patients to where they want to be, with the type of Afib playing a significant role in the efficacy of the treatment. (prweb.com)
  • Endosense in June won CE Mark approval in the European Union for its 3rd-generation TactiCath Quartz, making it the only company to produce a rival to BioSense Webster with a catheter that can sense the force being applied to heart muscle during cardiac ablation procedures. (massdevice.com)
  • Combining the proven performance of the BLAZER™ platform with a navigation-enabled 4 mm tip, the INTELLANAV™ ST Ablation Catheter offers smaller, more precise ablation for increased accuracy, efficiency and performance in RHYTHMIA HDx™ Mapping System procedures. (bostonscientific.com)
  • The INTELLANAV™ OPEN-IRRIGATED catheter encompasses the elegant Total Tip Cooling™ design and the familiarity and proven performance of the Blazer platform, now enhanced with INTELLANAV magnetic tracking technology for cool performance and confident navigation in RHYTHMIA Mapping System procedures. (bostonscientific.com)
  • There has been an increase in the adoption of irrigated-tip ablation catheters used in cardiac ablation procedures to treat atrial fibrillation. (pitchengine.com)
  • The present invention relates generally to multifunctional catheters for performing ablation procedures, and more particularly to ablation catheters utilized in the treatment of atrial fibrillation and other cardiac disorders. (patents.com)
  • As the overall volume of AFib ablation procedures performed worldwide continues to grow, an understanding of the real-world rates of serious complications is needed. (cardiovascularbusiness.com)
  • Catheter ablation was most successful in procedures where ablation was required in other areas in addition to the pulmonary vein, researchers said. (healthcanal.com)
  • With over a million procedures performed worldwide over the past 30 years, Boston Scientific's portfolio of therapeutic & diagnostic catheters remains the industry gold standard. (bostonscientific.com)
  • However, there is limited clinical data on multielectrode catheters, which means that complications arising from these procedures may not be fully known or understood. (stopafib.org)
  • The system assists electrophysiologists by creating a precise 3D map and locating the exact position and direction of catheters in the heart during diagnostic and therapeutic procedures. (medicaldevice-network.com)
  • CARTO 3 system employs fast anatomical mapping (FAM) technology that enables clinicians to easily construct a CT -like resolution map of the heart, reducing the need for fluoroscopy radiation during catheter ablation procedures. (medicaldevice-network.com)
  • Compared to results collected during Frost & Sullivan's 2007 End User Perceptions of Atrial Fibrillation Study, a statistically significant increase in awareness of the latest trends in EP ablation procedures and technologies was noted. (bio-medicine.org)
  • Cardiologists on average estimate that 35 percent of their patients are aware of and receptive to ablation procedures. (bio-medicine.org)
  • This week, Dr. Luigi Di Biase and his colleagues from the Cleveland Clinic reported in the Journal of the American College of Cardiology their early results of magnetic navigation to aid catheter ablation of atrial fibrillation in 45 patients during pulmonary vein isolation procedures. (blogspot.com)
  • Marketed by Stereotaxis as a safe and effective means for performing atrial fibrillation procedures, magnetic navigation was able to negotiate catheters to appropriate locations, but the technology, with its current generation of specially-designed floppy magnetic ablation catheters, failed to adequately electrically isolate the pulmonary veins (except in one patient) and had a significant 33% incidence of char formation on the conventional temperature-controlled (non-irrigated) ablation catheter tip. (blogspot.com)
  • For now, based on this report, the use of conventional temperature-controlled catheter ablation with the magnetic navigation system appears to add no benefit to the more conventional atrial fibrillation ablation procedures. (blogspot.com)
  • Working in concert with clinical experts in the field of ablation, the company is focused on developing and commercializing innovative products designed to make ablation procedures safer and less time consuming, thereby making it possible for more individuals to benefit from this life-bettering therapy. (biospace.com)
  • A total of 26642 patients (5715years, 62% men), undergoing a total of 34428 ablation procedures were included in the study. (diva-portal.org)
  • Conclusion Catheter ablations have shifted towards more complex procedures over the past decade. (diva-portal.org)
  • Once positioned in the heart, the balloon portion of the catheter is filled with a coolant which applies subzero temperatures to the abnormal pathways and restores normal electrical conduction. (medtronic.com)
  • Radiofrequency catheter ablation of accessory pathways in infants. (bmj.com)
  • METHODS: Five infants less than 9 months old underwent radiofrequency catheter ablation of accessory pathways. (bmj.com)
  • Accessory pathways in this area typically are very difficult to ablate because of the difficultly of retaining the tip of the catheter in one position. (google.ca)
  • 10 Catheter ablation of accessory pathways: Aman Chugh (University of Michigan), Frank Bogun (University of Michigan), and Fred Morady (University of Michigan). (wiley.com)
  • Anatomic and electrophysiologic relation between the coronary sinus and mitral annulus: implications for ablation of left-sided accessory pathways. (springer.com)
  • Pulmonary vein isolation by wide area circumferential ablation was performed for paroxysmal AF with additional linear and fractionated potential ablation for persistent AF. (springer.com)
  • Catheter ablation, endocardial pulmonary vein isolation (PVI) in particular, is the most commonly applied approach to treat drug refractory persistent AF, but particularly in this patient group results are modest. (clinicaltrials.gov)
  • All patients underwent pulmonary vein isolation of all veins, while 44.5% of them received additional left atrium ablation. (medicaldevice-network.com)
  • The patient underwent pulmonary vein isolation and ablation of the cavotricuspid isthmus on August 19th, 2008. (marketwired.com)
  • Gordy's heart doctor talked to him about catheter ablation, and specifically the Arctic Front ® Cardiac CryoAblation Catheter, as a treatment for paroxysmal atrial fibrillation. (medtronic.com)
  • The Arctic Front cryoablation catheter is a flexible thin tube that is maneuvered through a vessel into the left atrium. (medtronic.com)
  • A proximal cooling chamber can be positioned proximally to a thermal mass for cooling a proximal portion of the catheter. (google.es)
  • In addition, or alternatively, a distal cooling chamber can be positioned for cooling a distal portion of the catheter tip. (google.es)
  • Using X-rays as a guide, the doctor will pass several small catheters through veins in the groin or neck and position them in the area that is interfering with the heart's normal electrical activity. (hopkinsmedicine.org)
  • View a slideshow of catheter ablation to see how the heart's electrical system works, how atrial fibrillation happens, and how ablation is done. (rexhealth.com)
  • The catheters record the heart's electrical activity and can pinpoint where the arrhythmia is coming from. (bhf.org.uk)
  • Marrouche and Johannes Brachmann from the Klinikum Coburg conducted the eight-year CASTLE-AF clinical trial to compare catheter ablation to conventional drug therapies recommended by the American Heart Association and European Heart Society to control the heart's rate. (utah.edu)
  • 3D mapping systems are widely used in catheter ablation of AF. (springer.com)
  • Other energy sources , such as microwave and high intensity focused ultrasound (HIFU), have been studied but these energy sources aren't widely used in catheter ablation. (stopafib.org)
  • The field of catheter ablation has progressed with the development of new methods and tools, and with the publication of large clinical trials. (medworm.com)
  • A meta-analysis of randomized controlled trials found that catheter ablation was superior to conventional drug therapy alone for patients with atrial fibrillation and heart failure. (eurekalert.org)
  • The benefits and harms of catheter ablation versus drug therapy for patients with atrial fibrillation have not been firmly established. (eurekalert.org)
  • Researchers from Icahn School of Medicine at Mount Sinai reviewed six published randomized controlled trials to compare the benefits and harms between catheter ablation and standard drug therapy (rate or rhythm control medications) in adult patients with atrial fibrillation and heart failure. (eurekalert.org)
  • In the UK, patients with atrial fibrillation have to wait months for catheter ablation. (news-medical.net)
  • Young, healthy patients with atrial fibrillation can expect a success rate of 90% with catheter ablation, says Adrian Hernandez, MD, a cardiologist with the Duke Clinical Research Institute. (health.com)
  • Their reservations included the fact that the study population did not represent the greater population of patients with atrial fibrillation, such as elderly patients with structural heart disease who may be less responsive to ablation. (medpagetoday.com)
  • Compared with standard drug therapy, catheter ablation improved all-cause mortality and quality of life in patients with atrial fibrillation and heart failure, according to findings published in Annals of Internal Medicine . (healio.com)
  • Turagam and colleagues reviewed six randomized controlled trials to compare the benefits and harms of catheter ablation vs. standard drug therapy (rate or rhythm control medications) for adult patients with atrial fibrillation and heart failure (n = 775). (healio.com)
  • Researchers at the University of Utah Health and Klinikum Coburg, Germany co-led a clinical trial that showed radiofrequency catheter ablation lowered hospitalization and mortality rates by 47 and 44 percent respectively in patients with atrial fibrillation (AF), a contributing factor to heart failure. (utah.edu)
  • ORLANDO, FLA. - Catheter ablation, which uses high frequency radio waves to destroy electrical triggers in the heart, worked as well as or better than drugs to reduce periodic episodes of erratic heartbeats in patients with atrial fibrillation, according to late-breaking research presented at the American Heart Association's Scientific Sessions 2011. (healthcanal.com)
  • HealthDay News) - Magnetic resonance imaging (MRI) measurements of left atrial scarring in patients with atrial fibrillation (AF) are associated with poor outcomes of first AF catheter ablation, according to a study published in the February 5 issue of the Journal of the American Medical Association . (empr.com)
  • Recent clinical and preclinical studies demonstrated that the cryothermal energy application using a balloon catheter for PV isolation is an effective treatment for AF [ 5 , 6 ]. (hindawi.com)
  • RECENT FINDINGS: The most commonly applied techniques for atrial fibrillation ablation include isolation of the pulmonary venous antra, left-atrial linear ablation, and ablation of complex fractionated electrograms (CFEs) during atrial fibrillation. (mendeley.com)
  • It is widely believed that additional ablation targeting the substrate of atrial fibrillation maintenance is required beyond pulmonary venous isolation. (mendeley.com)
  • SUMMARY: Pulmonary venous antral isolation is the cornerstone of ablation of both paroxysmal and persistent atrial fibrillation. (mendeley.com)
  • Today, catheter ablation is gaining traction in the treatment of Afib as it has shown to help certain patient groups return to healthy heart rhythms while reducing their reliance on medications, which can have significant side effects. (prweb.com)
  • Dr. Molden regularly treats patients with Afib and he is a leading specialist in the area of catheter ablation techniques. (prweb.com)
  • The study, spearheaded by Weill Cornell Medicine-New York Presbyterian Hospital's Edward P. Cheng, MD, PhD, and published in the Journal of the American College of Cardiology , examined 60,203 adults undergoing ablation for AFib between 2005 and 2010. (cardiovascularbusiness.com)
  • Though catheter ablation of AFib has been around for two decades and is widely accepted as effective and safe, some recent work has suggested otherwise. (cardiovascularbusiness.com)
  • Recent studies have suggested an increasing trend in AFib ablation-related complication rates despite advances in catheter technology and operator experience," Cheng et al. (cardiovascularbusiness.com)
  • Furthermore, the landmark ablation trials that form the underpinning for the field of AFib ablation-such as FIRE AND ICE, CASTLE AF and CABANA-report no deaths. (cardiovascularbusiness.com)
  • Calkins emphasized the fact that experience clearly matters when it comes to AFib ablation, since the best outcomes are consistently found at the highest-volume hospitals with the highest-volume operators. (cardiovascularbusiness.com)
  • Since the early 1990s, radiofrequency catheter ablation (RFA) has been used to interrupt the reentrant circuit in the right atrium and prevent recurrences of atrial flutter. (medscape.com)
  • Some of the irrigated-tip EP ablation catheters available in the market include ThermoCool irrigated tip catheter, offered by Biosense Webster, and Blazer open-irrigated ablation catheter, offered by Boston Scientific. (pitchengine.com)
  • Developed by Biosense Webster, a subsidiary of Johnson & Johnson, the catheter is the only approved device, which combines contact force sensing with advanced irrigated porous tip ablation for improved efficiency. (medicaldevice-network.com)
  • Whether the system will be able to perform better with irrigated-tip ablation catheters under development with Biosense-Webster remains to be seen. (blogspot.com)
  • Rising market penetration of ablation and diagnostic catheters in developing countries of Asia Pacific and Latin America will positively impact industry expansion. (openpr.com)
  • Typically, catheter ablation is used only when pharmacologic treatment has been ineffective. (wikipedia.org)
  • One year after the ablation treatment, 69.9% of patients avoided recurrence of atrial-fibrillation episodes involving such symptoms as weakness and shortness of breath. (wsj.com)
  • Catheter-ablation treatment is related to, but distinct from, surgical ablation, which was the subject of a Page One article in The Wall Street Journal last week about marketing surgical-ablation devices. (wsj.com)
  • More particularly, this invention relates to a catheter and the methods for coronary sinus mapping as a diagnostic device, and for coronary sinus ablation in the treatment of atrial flutter indications. (google.com)
  • Treatment of atrial flutter may be accomplished by a variety of approaches, including drugs, surgery, implantable pacemakers/defibrillators, and catheter ablation. (google.com)
  • The FDA has cleared St. Jude Medical to initiate a clinical trial of the company's Duo irrigated ablation catheter for treatment of atrial fibrillation. (medgadget.com)
  • The trial will randomize patients 1:1 between the company's Duo 12 port open irrigated catheter ablation system and an irrigated catheter ablation system that has been approved by the FDA for the treatment of paroxysmal AF, a type of AF that begins suddenly and ends spontaneously. (medgadget.com)
  • When the first line of therapy for the treatment of paroxysmal AF using antiarrhythmic medication is ineffective, RF ablation is currently recommended as a second line of therapy for long-term cardiac arrhythmia control. (medgadget.com)
  • While it still depends on the type of arrhythmia, we are increasingly using catheter ablation for effective treatment. (umm.edu)
  • PURPOSE OF REVIEW: Ablation for atrial fibrillation has become a widely accepted and practiced treatment for this arrhythmia. (mendeley.com)
  • Our active involvement in the latest ablation research means you will have access to the most recent advancements in treatment. (dukehealth.org)
  • A thorough evaluation is needed to determine if catheter ablation is an appropriate treatment option for you. (clevelandclinic.org)
  • If you are a Cleveland Clinic patient and are receiving treatment for your arrhythmia, talk to your cardiologist about whether catheter ablation is an option for you. (clevelandclinic.org)
  • This guidance addresses the use of a randomized clinical trial (RCT) approach in designing clinical studies for catheter ablation devices for the treatment of atrial flutter. (fda.gov)
  • Recently approved IDE studies and PMA applications have used the option of a RCT given the availability of PMA-approved ablation catheters indicated for treatment of atrial flutter. (fda.gov)
  • What is the role of catheter ablation in the treatment of atrial flutter? (medscape.com)
  • 0.0001), and not significantly different to the conventional ablation group, of whom 18% required treatment (p=0.6). (news-medical.net)
  • The study gives the first direct proof that ablation is better than drugs for controlling symptoms and avoiding hospital treatment. (news-medical.net)
  • The findings also question the value of drug therapy, and whether catheter ablation should be the first line treatment for atrial fibrillation patients with symptoms. (news-medical.net)
  • They recruited 146 patients with recurrent atrial fibrillation and randomized 77 to circumferential pulmonary vein ablation without drug treatment. (medpagetoday.com)
  • SUNNYVALE, Calif.--(BUSINESS WIRE)--Mar 6, 2012-- Covidien (NYSE: COV), a leading global provider of healthcare products, today announced the launch of the HALO60 Ablation Catheter, the latest addition to the HALO family of catheters for the endoscopic treatment of Barrett's esophagus. (mdtmag.com)
  • However, the place of catheter ablation remains unclear with limited data comparing ablation with antiarrhythmic drug therapy as first-line treatment in patients. (bmj.com)
  • In this study there is no significant difference between catheter ablation and antiarrhythmic drug therapy as first-line treatment in patients with paroxysmal atrial fibrillation. (bmj.com)
  • In view of the potential for significant complications with catheter ablation, current practice of using drug therapy as first line treatment appears justified. (bmj.com)
  • Catheter ablation has become the treatment of choice for most supraventricular tachycardias (SVTs) with the sole exception, for the moment, of atrial fibrillation. (bmj.com)
  • Re-treatment for AF with ablation or the use of Class I or Class III antiarrhythmic drugs after a 3 month blanking period constitute a treatment failure. (clinicaltrials.gov)
  • Not every patient should be offered ablation, but this research should be discussed with patients when a physician feels it is a viable treatment option," Nielsen said. (healthcanal.com)
  • Our study suggests that in patients with heart failure and atrial fibrillation, catheter ablation is an effective alternative treatment that can help patients avoid or discontinue this drug to reduce the risk of these long-term side effects. (healthcanal.com)
  • If the ablation is limited to the pulmonary vein alone, the success rate goes down-almost to the level of the Amiodarone treatment," Di Biase said. (healthcanal.com)
  • The THERMOCOOL SMARTTOUCH® Surroundflow (SF) is a cardiac ablation catheter indicated for the treatment of atrial fibrillation (AF), including paroxysmal AF and persistent AF. (medicaldevice-network.com)
  • The catheter is used for the treatment of persistent atrial fibrillation (AF). (medicaldevice-network.com)
  • Frost & Sullivan: Momentum Mounting for Catheter Ablation Technologies in Treatment of Atrial Fi. (bio-medicine.org)
  • The market that participants like to call "two years away, for the past ten years," is now building momentum due to ongoing clinical research and recent FDA approval of the first catheter ablation system for treatment of atrial fibrillation in February of 2009. (bio-medicine.org)
  • The latest end-user study from Frost & Sullivan's Medical Device group assesses a variety of critical dynamics of catheter ablation approaches and technologies in treatment of both paroxysmal and long-standing persistent atrial fibrillation. (bio-medicine.org)
  • Services include diagnostic studies, implantation and testing of pacemakers and cardioverter defibrillators, and radio-frequency catheter ablation for the treatment of potentially fatal irregular heartbeats. (thefreedictionary.com)
  • The Barrx 360 Express catheter, with its self-adjusting circumferential RFA catheter, lets gastroenterologists and surgeons provide RFA treatment more easily and efficiently. (bioflorida.com)
  • Aims Catheter ablation is considered the treatment of choice for many tachyarrhythmias, but convincing real-world data on efficacy and safety are lacking. (diva-portal.org)
  • After the balloon catheter is inserted into the left atrium, the electrophysiologist inflates the balloon at the tip of the catheter. (stopafib.org)
  • In reducing the progression of dysplastic Barrett's esophagus to esophageal cancer, the launch of the Barrx 360 Express RFA balloon catheter underscores our commitment to patients," said Vafa Jamali, president, Early Technologies business in the Medtronic Minimally Invasive Therapies Group. (bioflorida.com)
  • The company is currently launching the Barrx 360 Express RFA balloon catheter in the United States. (bioflorida.com)
  • High-frequency jet ventilation: utility in posterior left atrial catheter ablation. (biomedsearch.com)
  • After AV node ablation, a permanent pacemaker is needed to regulate your heart rhythm. (rexhealth.com)
  • A special machine delivers energy through the catheter to tiny areas of the heart muscle that cause the abnormal heart rhythm. (clevelandclinic.org)
  • Catheter ablation might be done if you have symptoms that bother you a lot, you don't want to take heart rhythm medicine, or medicine has not worked for you. (healthwise.net)
  • The catheters are used to determine the type and origin of the heart rhythm disorder. (dupagemedicalgroup.com)
  • A special catheter can then be used to cauterize the abnormal heart rhythm. (dupagemedicalgroup.com)
  • We have achieved some of the lowest complication rates associated with catheter ablation and less than ten percent of our patients in the last two years needed a repeat ablation, a rate less than half the average. (dukehealth.org)
  • One patient developed a transient ischaemic complication after ablation of a left lateral accessory pathway by transseptal approach. (bmj.com)
  • With cardiac MRI, we evaluate your anatomy and see how much scarring you have in areas we might target for ablation. (utah.edu)
  • The present invention generally relates to a medical device and its use for endocardiac mapping and ablation. (google.com)
  • There is therefore a need for an improved mapping and ablation catheter which can be utilized for mapping and ablation and in which it is possible to affix the tip of the catheter so that it will remain in a desired position on the wall of the heart during beating of the heart. (google.ca)
  • A mapping and ablation catheter is described. (freepatentsonline.com)
  • These images are a random sampling from a Bing search on the term "Cardiac Catheter Ablation. (fpnotebook.com)
  • The catheter is characterized in having a tip member which during the initial placement of the catheter within the vascular system so that the distal tip member is disposed in a working relation with the lesion to be removed, means are provided for increasing the cross-sectional profile of the tip members to thereby cause it to move into engagement with the lesion to be excised. (google.co.uk)
  • These catheters require doctors to painstakingly manipulate the catheter to control exactly where each individual lesion should be applied. (medgadget.com)
  • The goal of any catheter or energy source is to create a transmural lesion while minimizing complications. (stopafib.org)
  • The catheter's stable contact force transmits exact location reference signal through location sensor and transmitter coil, promoting persistent lesion formation and reducing ablation time. (medicaldevice-network.com)
  • From the article: Char found on the ablation catheter tip after an ablation lesion. (blogspot.com)
  • They placed a right external jugular vein catheter, tunneling subcutaneously to exit from the patient's upper back, near the midline, just below his neck. (eurekalert.org)
  • Catheter ablation involves advancing several flexible catheters into the patient's blood vessels , usually either in the femoral vein , internal jugular vein, or subclavian vein . (wikipedia.org)
  • During the ablation process, a catheter is snaked through the patient's body to the site of abnormal heart cells. (utah.edu)
  • The specific areas that benefit from additional ablation depend on each patient's individual condition. (healthcanal.com)
  • However, the technique for ablation has evolved over time, particularly for the two distinct groups of paroxysmal and persistent atrial fibrillation. (mendeley.com)
  • Integration of a 3D reconstruction of the left atrium into cardiac mapping systems can aid catheter ablation of atrial fibrillation (AF). (springer.com)
  • At conventional ablation of atrial fibrillation the catheters are manually navigated to the ideal anatomic position where to isolate the pulmonary veins from the left atrium. (centerwatch.com)
  • Our arrhythmia specialists (electrophysiologists) work closely with our surgeons, who provide another form of ablation during open-heart operations. (umm.edu)
  • The purpose of this document is to help electrophysiologists around the world to appropriately select patients for catheter ablation, to p. (medworm.com)
  • For persistent atrial fibrillation, the outcome of catheter ablation is less efficacious. (mendeley.com)
  • However, to obtain better outcomes in persistent atrial fibrillation, further adjuvant ablation, in the form of either linear or CFE ablation, will likely have to be performed to achieve comparable success rates. (mendeley.com)
  • Epicardial (EPI) catheter approach is considered as an accessory to endocardial (ENDO) ablation for persistent atrial fibrillation (PeAF). (clinicaltrials.gov)
  • My second ablation was very successful in that I was incident free for two years with no drugs. (medhelp.org)
  • A second ablation usually gets rid of SVT. (healthwise.net)
  • Was hoping a successful ablation would snap me back to my old self. (healingwell.com)
  • There is a small risk of the arrhythmia recurring even after successful ablation of WPW. (cigna.com)
  • Catheter ablation is now an established first line therapy for many supraventricular tachycardias and ventricular arrhythmia's in patients with structurally normal hearts. (drugs.com)
  • How catheter ablation works in different types of tachycardias. (ahajournals.org)
  • ANN ARBOR, Mich., March 2 - Circumferential pulmonary vein ablation restored sinus rhythm in 74% of patients with chronic atrial fibrillation and did so without antiarrhythmic drugs, according to researchers here. (medpagetoday.com)
  • Ablation was done for medically refractory tachyarrhythmia associated with aborted sudden death in two patients, left ventricular dysfunction in one, failure of antiarrhythmic drugs in one, and planned cardiac surgery in one. (bmj.com)
  • The BLAZER Open Irrigated Catheter, with its Total Tip Cooling™ design, provides an elegant cooling platform with the robust handling capabilities of the historical BLAZER platform to provide performance and efficacy. (bostonscientific.com)
  • Using Swedish national registry data, the ablation spectrum, procedural characteristics, as well as ablation efficacy and reported adverse events are reported. (diva-portal.org)
  • Fluoroscopy time has markedly decreased and the efficacy of catheter ablation seems to improve for AF. (diva-portal.org)
  • During an ablation, the doctor destroys tiny areas in the heart that are firing off abnormal electrical impulses and causing atrial fibrillation. (rexhealth.com)
  • A catheter is threaded into the heart and the tip is guided to the area producing abnormal electrical signals. (medmovie.com)
  • Electrical impulses are also delivered to the heart muscle via these catheters in specific ways that can trigger or terminate the abnormal heart rhythms so that their origin can be located. (vetspecialists.co.uk)
  • RADIOFREQUENCY ABLATIONS During radio-frequency catheter ablation , a catheter positioned next to the abnormal pathway in the heart destroys abnormal tissues. (thefreedictionary.com)
  • In the catheter patients the fluoroscopy time was about 27 minutes. (medpagetoday.com)
  • These catheters are positioned in key areas inside the heart with the help of real-time x-rays (fluoroscopy) and cardiac ultrasound (transoesophageal echocardiography). (vetspecialists.co.uk)
  • Using the circular decapolar Pulmonary Vein Ablation Catheter (PVAC(TM)) and GENius(TM) Multi-Channel Radiofrequency (RF) energy generator from Ablation Frontiers, 100% of the veins were isolated in 97 minutes (+/- 32 minutes) with just 20 minutes (+/- 9 minutes) of fluoroscopy. (biospace.com)
  • Fluoroscopy has been used to guide catheters into the heart chambers, but even in EP labs using fluoroscopy, 3D mapping systems are utilized more and more for accessory pathway (AP) ablation to tag AP location, a feature not possible to achieve using X-ray-only approach. (springer.com)
  • We describe in detail how to approach AP ablation with little or no fluoroscopy in the right and left chambers of the heart. (springer.com)
  • Catheter ablation of atrial fibrillation without the use of fluoroscopy. (springer.com)
  • A catheter ablation involves passing thin, flexible tubes, called catheters, through the blood vessels to the heart. (bhf.org.uk)
  • The doctor will then put the catheters through blood vessels. (baycare.org)
  • This small randomized trial compared catheter-based ablation and open surgical ablation for atrial fibrillation. (medpagetoday.com)
  • Surgical ablation was significantly better than catheter ablation. (medpagetoday.com)
  • This is the only randomized clinical trial that compares catheter to surgical ablation," he said. (medpagetoday.com)
  • What we observe in this trial is that in these more difficult patients, surgical ablation is more effective," Gillinov said, "but it also had greater morbidity. (medpagetoday.com)
  • Among the 69 control group patients 53 crossed over to circumferential ablation within one year and sinus rhythm was present in 37 of these 53 patients. (medpagetoday.com)
  • The most utilized ablation strategy for Paroxysmal Atrial Fibrillation is wide area circumferential ablation. (bio-medicine.org)