Key result
Catheter ablation is an important adjunctive therapy for ventricular tachycardia in patients with nonischemic cardiomyopathy, though it is generally less successful than in ischemic VT due to midmyocardial scars.
This review provides an overview of the substrate and catheter ablation strategies for ventricular tachycardia in patients with nonischemic cardiomyopathy.
Supports adjunctive ablation in nonischemic cardiomyopathy VT; leaves optimal midmyocardial strategies open for prospective study.
The term "nonischemic cardiomyopathy" (NICM) designates a myocardial disease characterized by mechanical and/or electrical dysfunction in the absence of significant coronary artery disease, valvular heart disease, hypertension, or congenital heart disease. Although sustained ventricular tachycardia (VT) occurs in only 5% of patients with NICM, it is an important cause of sudden cardiac death. In this review we summarize the current understanding of the anatomic and electrophysiologic substrates of VT in the different types of NICM. In addition, we discuss recent progress and experience with catheter ablation of VT in these patients.
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Liuba et al. (2013) conducted a review in Nonischemic Cardiomyopathy with Ventricular Tachycardia. Catheter ablation was evaluated. Catheter ablation is an important adjunctive therapy for ventricular tachycardia in patients with nonischemic cardiomyopathy, though it is generally less successful than in ischemic VT due to midmyocardial scars.
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