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|Title:||Narrow QRS Tachycardia with Transition: What Is the Mechanism?|
|Keywords:||Cardiovascular System & Cardiology; Engineering|
|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?|
|Appears in Collections:||Journal Articles|
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