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Mapping and Ablation of Trigger Premature Ventricular Contractions in a Case of Electrical Storm Associated with Ischemic Cardiomyopathy
Author(s) -
OKADA TARO,
YAMADA TAKUMI,
MURAKAMI YOSHIMASA,
YOSHIDA NAOKI,
NINOMIYA YUUICHI,
TOYAMA JUNJI
Publication year - 2007
Publication title -
pacing and clinical electrophysiology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.686
H-Index - 101
eISSN - 1540-8159
pISSN - 0147-8389
DOI - 10.1111/j.1540-8159.2007.00689.x
Subject(s) - medicine , cardiology , ventricular tachycardia , ventricle , ablation , ischemic cardiomyopathy , ventricular fibrillation , cardiomyopathy , catheter ablation , heart failure , ejection fraction
We report a case of polymorphic ventricular tachycardia and ventricular fibrillation (PVT/VF) storm associated with ischemic cardiomyopathy (ICM). The electrocardiogram (ECG) monitor revealed frequent premature ventricular contractions (PVCs) initiated PVT/VF. Electroanatomic mapping revealed the plausible origins of PVCs were located in the scar border zone at the posterior septum of the left ventricle. Purkinje‐like potentials (PLPs) always preceded PVCs and a decremental property for the PLPs and infarcted myocardium junction was observed. Ablation at these sites eliminated both PVCs and PVT/VF .