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Latency during left ventricular pacing from the lateral cardiac veins: a cause of ineffectual biventricular pacing |
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| Authors: | Herweg Bengt Ilercil Arzu Madramootoo Chris Krishnan Sendhil Rinde-Hoffman Debbie Weston Mark Curtis Anne B Barold S Serge |
| Institution: | Arrhythmia Service and Division of Cardiology, Tampa General Hospital and University of South Florida, Tampa, Florida 33606, USA. bherweg@hsc.usf.edu |
| Abstract: | We report three patients with cardiomyopathy and pronounced stimulus to QRS latency during left ventricular (LV) pacing from an epicardial cardiac vein. Delayed LV activation during simultaneous biventricular pacing produced an electrocardiographic pattern dominated by right ventricular stimulation. Hemodynamic parameters improved immediately after advancing LV stimulation (in one patient) or pacing the LV only (in two patients) coupled with dramatic improvement of heart failure symptoms. |
| Keywords: | latency cardiac resynchronization therapy left ventricular pacing biventricular pacing congestive heart failure |
| 本文献已被 PubMed 等数据库收录！ | |