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Ventricular tachycardia originating from the aortic sinus cusp in patients with idiopathic dilated cardiomyopathy.
MedLine Citation:
PMID:  21056120     Owner:  NLM     Status:  In-Data-Review    
Abstract/OtherAbstract:
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.
Authors:
Miki Yokokawa; Eric Good; Thomas Crawford; Krit Jongnarangsin; Aman Chugh; Frank Pelosi; Hakan Oral; Fred Morady; Frank Bogun
Publication Detail:
Type:  Journal Article     Date:  2010-11-04
Journal Detail:
Title:  Heart rhythm : the official journal of the Heart Rhythm Society     Volume:  8     ISSN:  1556-3871     ISO Abbreviation:  Heart Rhythm     Publication Date:  2011 Mar 
Date Detail:
Created Date:  2011-03-01     Completed Date:  -     Revised Date:  -    
Medline Journal Info:
Nlm Unique ID:  101200317     Medline TA:  Heart Rhythm     Country:  United States    
Other Details:
Languages:  eng     Pagination:  357-60     Citation Subset:  IM    
Copyright Information:
Copyright © 2011 Heart Rhythm Society. All rights reserved.
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