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Case Reports
Wide complex tachycardia cycle length shorter than the narrow complex tachycardia. What is the mechanism?
- Vern Hsen Tan, Colin Yeo, and Kelvin Wong.
- Cardiology Department, Changi General Hospital, Singapore. Electronic address: tan.vern.hsen@singhealth.com.sg.
- J Electrocardiol. 2020 Mar 1; 59: 171-173.
Abstract15-Year-old man's cardiac event monitor showed an episode of wide complex tachycardia which transitioned into narrow complex tachycardia. The tachycardia cycle length was shorter during wide complex tachycardia compared with narrow complex tachycardia. He underwent electrophysiology study in which an orthodromic atrioventricular reentrant tachycardia (wide and narrow complex tachycardia) utilizing left posterolateral bypass tract was induced. We propose the mechanism for shorter tachycardia cycle length during wide complex tachycardia compared with narrow complex tachycardia.Copyright © 2020 Elsevier Inc. All rights reserved.
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