Clinical Significance of Inducibility Test of Atrial Fibrillation after Termination of Chronic, Persistent Atrial Fibrillation during Stepwise Approach

Yasutsugu Nagamoto, Jongil Choi, Jae Seok Park, Ji Eun Ban, Yae Min Park, Hong Euy Lim, Sang Weon Park, Young Hoon Kim

Research output: Contribution to journalArticle

Abstract

Background and Purpose: Atrial fibrillation (AF) termination has been used as the endpoint of Catheter ablation of longstanding persistent AF (LPAF). A value of an inducibility testing after achieving AF termination as predicting clinical outcome of Catheter ablation of AF is unclear. Methods: In 170 patients with LPAF (> 1 year) underwent stepwise approach (pulmonary vein isolation, multiple linear ablations, defragmentation, and bidirectional block of cavotricuspid isthmus), inducibility was tested by rapid atrial pacing after AF terminated. Results: Of 170 patients, induced AF (> 5 minutes) in 61 patients (group 1), induced atrial tachycardia (AT) (> 10 minutes) (group 2) in 72 and no induction of AF and AT (group 3) in 37. During 39 ±21 months of follow up, AF recurrence rate in group 1 (n=29, 48%) was similar to that in group 2 (n=34, 35%), however, higher than that in group 3 (n=10, 27%, p<0.05) Conclusion: Noninducibility of AF and AT after termination of LPAF during biatrial ablation led to a better outcome during the follow-up period.

Original languageEnglish
Number of pages1
JournalJournal of Arrhythmia
Volume27
Issue number4
DOIs
Publication statusPublished - 2011 Jan 1

Keywords

  • atrial fibrillation
  • inducibility test

ASJC Scopus subject areas

  • Cardiology and Cardiovascular Medicine

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