Narrow Complex Tachycardia: What is the Mechanism?
作者信息
Refaat Marwan M, Scheinman Melvin, Badhwar Nitish
机构信息
Section of Cardiac Electrophysiology, Division of Cardiology, Department of Medicine, Faculty of Medicine and Medical Center, American University of Beirut, PO Box 11-0236, Riad El-Solh, Beirut 1107 2020, Lebanon.
Section of Cardiac Electrophysiology, Division of Cardiology, Department of Medicine, University of California, 500 Parnassus Avenue, San Francisco, CA 94143, USA.
出版信息
Card Electrophysiol Clin. 2016 Mar;8(1):67-9. doi: 10.1016/j.ccep.2015.10.006. Epub 2016 Jan 13.
This article presents a diagnostic dilemma in which atrioventricular nodal reentrant tachycardia (AVNRT) and junctional tachycardia (JT) were differentiated based on tachycardia initiation with atrial extrastimulus as well as on the response to progressive decremental atrial extrastimuli. The progressive increase in A2H2' and H2H2' in response to atrial extrastimuli favors reentry as the mechanism of the tachycardia. This is a novel mechanistic differentiation of AVNRT from focal JT.
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