The different mechanisms between late and very late recurrences of atrial fibrillation in patients undergoing a repeated catheter ablation

Ming Hsiung Hsieh, Ching Tai Tai, Shih Huang Lee, Yung Kuo Lin, Hsuan Ming Tsao, Shih Lin Chang, Yenn Jiang Lin, Wanwarang Wongchaoen, Kun Tai Lee, Shih Ann Chen

研究成果: 雜誌貢獻文章同行評審

68 引文 斯高帕斯(Scopus)

摘要

Introduction: The mechanisms of late (1 year after the ablation) recurrences of paroxysmal atrial fibrillation (AF) after catheter ablation have not been reported. Methods and Results: Fifty consecutive patients undergoing a repeated electrophysiologic study to investigate the recurrence of paroxysmal AF after the first ablation were included. Group 1 consisted of 12 patients with very late (26 ± 13 months) and group 2 consisted of 38 patients with late (3 ± 3 months) recurrence of paroxysmal AF. In the baseline study, group 1 had a lower incidence of AF foci from the pulmonary veins (PVs) (67% vs 92%, P = 0.048) and a higher incidence of AF foci from the right atrium (50% vs 13%, P = 0.014) than group 2. In the repeated study, group 1 had a higher incidence of AF foci from the right atrium (67% vs 3%, P <0.001) and a lower incidence of AF foci from the left atrium (50% vs 97%, P <0.001), including a lower incidence of AF foci from the PVs (50% vs 79%, P = 0.07) and from the left atrial free wall (0% vs 29%, P = 0.046) than group 2. Furthermore, most of these AF foci (64% of group 1, 65% of group 2) were from the previously targeted foci. Conclusion: The right atrial foci played an important role in the very late recurrence of AF, whereas the left atrial foci (the majority were PVs) were the major origin of the late recurrence of AF after the catheter ablation of paroxysmal AF.

原文英語
頁(從 - 到)231-235
頁數5
期刊Journal of Cardiovascular Electrophysiology
17
發行號3
DOIs
出版狀態已發佈 - 三月 2006
對外發佈Yes

ASJC Scopus subject areas

  • Cardiology and Cardiovascular Medicine
  • Physiology

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