Electrophysiologic characteristics and radiofrequency catheter ablation in patients with multiple atrioventricular nodal reentry tachycardias

Ching Tai Tai, Shih Ann Chen, Chern En Chiang, Chen Chuen Cheng, Chuen Wang Chiou, Shih Huang Lee, Kwo Chang Ueng, Zu Chi Wen, Mau Song Chang

Research output: Contribution to journalArticlepeer-review

26 Citations (Scopus)

Abstract

Information about the mechanism and radiofrequency catheter ablation of multiple atrioventricular (AV) nodal reentry tachycardias is limited. Among the 550 consecutive patients with AV nodal reentry tachycardia, 36 with multiple forms of AV nodal reentry tachycardia were included in this study. Electrophysiologic characteristics, as well as the efficacy and safety of radiofrequency ablation, were evaluated. Results showed that anterograde dual pathways were seen in 32 patients and triple pathways in 2, and retrograde dual pathways were seen in 23 patients and triple pathways in 11. Twenty-two patients had 2 types, 7 had 3 types, 5 had 4 types, and 2 had 5 types of AV nodal reentry tachycardia and echoes. After delivering radiofrequency energy to the target sites, 32 patients had no induction of AV nodal reentry tachycardia and only 4 had induction of 1 echo. Furthermore, 22 patients (61%) had simultaneous elimination or modification of the slow and/or intermediate pathways in the anterograde and retrograde direction. During the follow-up period of 19 ± 14 months, 2 patients had recurrence of tachycardia. Thus, multiple anterograde and retrograde AV nodal pathways were present in the human AV node and they constituted the substrates of reentry circuits. Radiofrequency catheter ablation was safe and effective in eliminating the slow and intermediate pathways for maintenance of multiple AV nodal reentry tachycardias.

Original languageEnglish
Pages (from-to)52-58
Number of pages7
JournalAmerican Journal of Cardiology
Volume77
Issue number1
DOIs
Publication statusPublished - Jan 1 1996

ASJC Scopus subject areas

  • Cardiology and Cardiovascular Medicine

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