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Successful Catheter Ablation of Unmappable Monomorphic Postinfarction Ventricular Tachycardia Guided by a Purkinje Potential
Author(s) -
KIEDROWICZ RADOSŁAW,
KAŹMIERCZAK JAROSŁAW,
WIELUSIŃSKI MACIEJ,
PEREGUDPOGORZELSKA MAŁGORZATA
Publication year - 2012
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.1540-8159.2011.03110.x
Subject(s) - medicine , cardiology , ventricular tachycardia , catheter ablation , sinus rhythm , right bundle branch block , ablation , qrs complex , radiofrequency ablation , radiofrequency catheter ablation , electrocardiography , atrial fibrillation
We describe a case of a patient with the history of a monomorphic postinfarction ventricular tachycardia that exhibited a right bundle branch block morphology and a superior axis. Because of electrical and hemodynamic instability of arrhythmia, classical mapping techniques were not applied. An electroanatomic voltage map during sinus rhythm was performed. A Purkinje potential (PP) preceding the QRS complex was recorded at posteroseptal area of a scar. Radiofrequency energy delivery at sites where a PP was detected resulted in a successful ablation. (PACE 2012; 35:e124–e126)