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Lead aVL P‐Wave Polarity: Insight from Mapping and Ablation of Atrial Arrhythmia Initiated from Superior Vena Cava |
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| Authors: | KAZUYOSHI SUENARI M.D. YENN‐JIANG LIN M.D. SHIH‐LIN CHANG M.D. LI‐WEI LO M.D. YU‐FENG HU M.D. SHIH‐ANN CHEN M.D. |
| Affiliation: | 1. Division of Cardiology, Taipei Veterans General Hospital, Taipei, Taiwan;2. Department of Medicine and Institute of Clinical Medicine, Cardiovascular Research Center, National Yang‐Ming University School of Medicine, Taipei, Taiwan |
| Abstract: | We report a case of focal atrial tachycardia (AT) originating from prior superior vena cava isolation line. The P‐wave morphology in lead aVL during the AT differed from that during sinus rhythm although their foci were in close proximity to each other. We discuss the mechanism based on the activation maps of the right atrium. (PACE 2010; 33:e100–e101) |
| Keywords: | atrial tachycardia electrophysiology ablation |