Journal
JOURNAL OF CARDIOVASCULAR ELECTROPHYSIOLOGY
Volume 20, Issue 6, Pages 692-695Publisher
WILEY-BLACKWELL PUBLISHING, INC
DOI: 10.1111/j.1540-8167.2008.01395.x
Keywords
ventricular tachycardia; epicardial; reentrant; arrhythmogenic right ventricular cardiomyopathy; radiofrequency catheter ablation
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Macro-Reentrant ARVC epi-VT with a Focal Endo-Activation. A 55-year-old man with arrhythmogenic right ventricular cardiomyopathy underwent catheter ablation of ventricular tachycardia (VT) with left bundle branch block and left superior axis QRS morphology with an early precordial transition. Endocardial mapping during the VT revealed a focal activation pattern from a small region of low voltage in the left ventricular (LV) septum. Despite earliest endocardial activation in the LV septum, epicardial mapping demonstrated a macro-reentrant circuit with successful catheter ablation at an inferior peritricuspid annular site. Activation from the reentrant circuit propagated through the scar area in the epicardial right ventricle to the remote endocardial LV breakout site. (J Cardiovasc Electrophysiol, Vol. 20, pp. 692-695, June 2009).
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