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01.07.2016 | Invasive Electrophysiology and Pacing (EK Heist, Section Editor) | Ausgabe 7/2016

Current Cardiology Reports 7/2016

Outcomes of Catheter Ablation of Ventricular Tachycardia in the Setting of Structural Heart Disease

Zeitschrift:
Current Cardiology Reports > Ausgabe 7/2016
Autoren:
B. P. Betensky, F. E. Marchlinski
Wichtige Hinweise
This article is part of the Topical Collection on Invasive Electrophysiology and Pacing

Abstract

Sustained ventricular tachycardias are common in the setting of structural heart disease, either due to prior myocardial infarction or a variety of non-ischemic etiologies, including idiopathic dilated cardiomyopathy, hypertrophic cardiomyopathy, and arrhythmogenic right ventricular cardiomyopathy. Over the past two decades, percutaneous catheter ablation has evolved dramatically and has become an effective tool for the control of ventricular arrhythmias. Single and multicenter observational studies as well as several prospective randomized trials have begun to investigate long-term outcomes after catheter ablation procedures. These studies encompass a wide range of mapping and ablation techniques, including conventional activation mapping/entrainment criteria, substrate modification guided by pacemapping, late potential and abnormal electrogram ablation, scar de-channeling, and core isolation. While large-scale, multicenter prospective randomized clinical trials are somewhat limited, the published data demonstrate favorable outcomes with respect to a reduction in overall ventricular tachycardia (VT) burden, reduction of implantable cardioverter defibrillator (ICD) shocks, and discontinuation of anti-arrhythmic medications across varying disease subtypes and convincingly support the use of catheter ablation as the standard of care for many patients with VT in the setting of structural heart disease.

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