Yoshimura S, Nakatani Y, Kaseno K, Nakamura K, Naito S. A-V-V-A response to single atrial premature depolarization in a narrow QRS tachycardia: What is the mechanism?
J Arrhythm 2023;
39:965-968. [PMID:
38045453 PMCID:
PMC10692860 DOI:
10.1002/joa3.12924]
[Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/14/2023] [Revised: 08/31/2023] [Accepted: 09/05/2023] [Indexed: 12/05/2023] Open
Abstract
We present an atypical response to single atrial premature depolarization (APD) in a long RP' tachycardia. APD advanced the His-bundle potential immediately after it and resulted in a VA block; however, tachycardia persisted and consequently exhibited an A-V-V-A response. We propose the mechanism for an A-V-V-A response to APD in a long RP' tachycardia.
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