Ventricular fibrillation induced by a radiofrequency energy delivery for idiopathic premature ventricular contractions arising from the left ventricular anterior papillary muscle

A 73-year-old man with idiopathic premature ventricular contractions (PVCs) underwent electrophysiological testing. Left ventricular activation mapping revealed a focal mechanism of the PVCs with the earliest activation on the anterior papillary muscle (APM). Irrigated radiofrequency (RF) current de...

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Bibliographic Details
Published in:Europace (London, England) England), 2009-08, Vol.11 (8), p.1115-1117
Main Authors: Yamada, Takumi, McElderry, H. Thomas, Allred, James D., Doppalapudi, Harish, Kay, G. Neal
Format: Article
Language:English
Subjects:
Aged
Catheter Ablation - adverse effects
Heart Conduction System - abnormalities
Heart Conduction System - surgery
Heart Ventricles - abnormalities
Heart Ventricles - surgery
Humans
Male
Papillary Muscles - abnormalities
Papillary Muscles - surgery
Ventricular Fibrillation - diagnosis
Ventricular Fibrillation - etiology
Ventricular Fibrillation - prevention & control
Ventricular Premature Complexes - surgery
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Summary:A 73-year-old man with idiopathic premature ventricular contractions (PVCs) underwent electrophysiological testing. Left ventricular activation mapping revealed a focal mechanism of the PVCs with the earliest activation on the anterior papillary muscle (APM). Irrigated radiofrequency (RF) current delivered at that site induced a cluster of non-sustained ventricular tachycardia episodes with the same QRS morphology as the PVCs, followed by ventricular fibrillation (VF). The APM might have served as an abnormal automatic trigger and driver for the VF occurrence. Ventricular fibrillation may occur as a complication during RF catheter ablation of papillary muscle ventricular arrhythmias even if the clinical arrhythmia is limited to PVCs.
ISSN:1099-5129
1532-2092
DOI:10.1093/europace/eup092