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  • Title: Successful catheter ablation of unmappable monomorphic postinfarction ventricular tachycardia guided by a Purkinje potential.
    Author: Kiedrowicz R, Kaźmierczak J, Wielusiński M, Peregud-Pogorzelska M.
    Journal: Pacing Clin Electrophysiol; 2012 May; 35(5):e124-6. PubMed ID: 21535033.
    Abstract:
    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.
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