منابع مشابه
Catheter Ablation for Tachycardias
T ACHY ARRHYTHMIAS constitute a major cause of mortality and morbidity. The most serious manifestation of cardiac arrhythmia is sudden cardiac death where the underlying rhythm is ventricular tachycardia-ventricular fibrillation (VT VF) in the vast majority of patients. I Other symptoms produced by cardiac arrhythmias are syncope, near syncope, lightheadedness, and palpitations. Although suprav...
متن کاملImplications for Catheter Ablation
Background. The primary mechanism of tissue injury by radiofrequency catheter ablation is presumed to be thermally mediated. However, the myocardial cellular electrophysiological effects of hyperthermia are not well characterized. We used an in vitro model of isolated guinea pig right ventricular papillary muscle to investigate the acute cellular electrophysiological effects of hyperthermia. Me...
متن کاملCatheter ablation of ventricular tachycardia.
Ventricular tachycardia (VT) most commonly develops in patients with structural heart disease. Myocardial infarction results in collagen replacement interspersed with surviving myocardium, which alters impulse propagation, facilitating re-entry.1 Aside from the postinfarction substrate, scar-mediated VT occurs in patients with nonischemic cardiomyopathy, Chagas disease, sarcoidosis, arrhythmoge...
متن کاملCatheter Ablation of Atrial Fibrillation
Ma A frequent need for re-ablations and limited overall success rates are still major limitations of catheter ablation procedures for the treatment of atrial fibrillation (AF). These limitations include not only the durability of the pulmonary vein isolation (PVI) lines, but also the pathophysiological understanding of the arrhythmia’s substrate. Long-term single procedure success rates in non-...
متن کاملCatheter Ablation for Atrial Fibrillation
everal different approaches have been proposed for targeting the pulmonary veins (PVs) or atria in catheter ablation for atrial fibrillation (AF). It was initially focal radiofrequency (RF) application inside the PV, then PV ostial isolation by segmental RF applications guided by a circular mapping catheter was developed (EP-guided method).1 Another standard method, circumferential PV isolation...
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ژورنال
عنوان ژورنال: JACC: Clinical Electrophysiology
سال: 2018
ISSN: 2405-500X
DOI: 10.1016/j.jacep.2018.03.016