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Ventricular tachycardia originating from the aortic sinus cusp in patients with idiopathic dilated cardiomyopathy.

Abstract：

BACKGROUND:Ventricular tachycardia (VT) in patients with idiopathic dilated cardiomyopathy often originates from the basal left ventricular myocardium and also can originate from the conduction system. The basal left ventricular myocardium reaches to the base of the aortic sinus cusps. OBJECTIVE:The purpose of this study was to assess the prevalence of VT originating from the aortic sinus cusps in patients with idiopathic dilated cardiomyopathy. METHODS:Thirty-three consecutive patients with nonischemic cardiomyopathy (24 men, age: 59 ± 11 years, ejection fraction: 29% ± 14%) were referred for ablation. RESULTS:VTs originating from the aortic sinus cusps were identified in 8 of 33 patients (24%). The presence of low voltage in the basal left ventricle correlated with the inducibility of aortic sinus cusp VTs. All but 1 aortic sinus cusp VTs were effectively ablated. In 1 patient, the site of origin of the VT was <10 mm from the ostium of the left main coronary artery and ablation was not attempted. CONCLUSION:In patients with idiopathic dilated cardiomyopathy, VT often originates from the aortic sinus cusps. The large majority of these VTs can be successfully ablated.

journal_name

Heart Rhythm

journal_title

Heart rhythm

authors

Yokokawa M,Good E,Crawford T,Jongnarangsin K,Chugh A,Pelosi F Jr,Oral H,Morady F,Bogun F

doi

10.1016/j.hrthm.2010.10.045

subject

Has Abstract

pub_date

2011-03-01 00:00:00

pages

357-60

issue

3

eissn

1547-5271

issn

1556-3871

pii

S1547-5271(10)01193-8

journal_volume

8

pub_type

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