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A 32-year-old man with idiopathic ventricular fibrillation and an implantable cardioverter defibrillator presented during a ventricular fibrillation storm. Frequent monomorphic ventricular ectopics with left bundle branch block morphology were documented, some of which initiated fibrillation. He underwent noncontact mapping of the right ventricle, during which the ventricular ectopics were mapped to a site in the free wall displaying a diastolic potential 80 ms before ectopic QRS onset. Following three radiofrequency energy applications, the ectopics were abolished. After 11-month follow-up, he has experienced no further arrhythmias. Noncontact mapping may identify ablatable triggers of ventricular fibrillation and lead to successful outcomes even when only single ectopics are present.

Original publication

DOI

10.1046/j.1540-8167.2004.03655.x

Type

Journal article

Journal

J Cardiovasc Electrophysiol

Publication Date

08/2004

Volume

15

Pages

957 - 959

Keywords

Adult, Body Surface Potential Mapping, Catheter Ablation, Humans, Male, Treatment Outcome, Ventricular Fibrillation, Ventricular Premature Complexes