Narrow QRS Tachycardia with Transition: What Is the Mechanism?
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Date
2016
Journal Title
Journal ISSN
Volume Title
Publisher
PACE-PACING AND CLINICAL ELECTROPHYSIOLOGY
Abstract
A 50-year-old woman underwent radiofrequency catheter ablation of narrow QRS tachycardia that was terminated with intravenous adenosine. Twelve-lead electrocardiogram was normal during sinus rhythm. The electrophysiological study showed normal atriohisian and hisioventricular intervals during sinus rhythm. Atrial burst pacing reproducibly induced two narrow QRS tachycardias. Figure 1 shows spontaneous switch of tachycardia 1 to tachycardia 2. What are the likely mechanisms of the tachycardia and the transition?
Description
Keywords
Cardiovascular System & Cardiology; Engineering
Citation
39 ,9;1016-1017