Persistent atrial flutter in patients treated for atrial fibrillation with amiodarone and propafenone: Electrophysiologic characteristics, radiofrequency catheter ablation, and risk prediction

Ching Tai Tai, Chern En Chiang, Shih Huang Lee, Yi Jen Chen, Wen Chung Yu, An Ning Feng, Yu An Ding, Mau Song Chang, Shih Ann Chen

研究成果: 雜誌貢獻文章

47 引文 斯高帕斯(Scopus)

摘要

Introduction: Antiarrhythmic drugs have been reported to promote the conversion of atrial fibrillation to atrial flutter in patients with paroxysmal atrial fibrillation. However, information about the electrophysiologic mechanism and response to radiofrequency ablation of these drug-induced atrial flutters is limited. Furthermore, the determinants of the development of persistent atrial flutter in patients treated for atrial fibrillation with antiarrhythmic drugs are still unknown. Methods and Results: Among the 136 patients treated for atrial fibrillation with amiodarone (n = 96) or propafenone (n = 40), 15 (11%, mean age 65.5 ± 12.3 years) were identified to have subsequent development of persistent atrial flutter based on surface ECG characteristics during antiarrhythmic drug treatment. The mean interval between the beginning of drug treatment and the onset of atrial flutter was 5.0 ± 5.5 months. Intracardiac mapping and entrainment studies revealed that 11 patients had counterclockwise typical atrial flutter, and 4 had clockwise typical atrial flutter. All 15 patients underwent successful ablation with creation of complete bidirectional isthmus conduction block. After a mean follow-up of 12.3 ± 4.2 months, 14 (93%) of 15 patients who underwent successful ablation and continued taking antiarrhythmic drugs have remained in sinus rhythm. Univariate analysis of clinical variables demonstrated that only atrial enlargement was significantly related to the occurrence of persistent atrial flutter. Conclusion: In patients with atrial fibrillation, persistent typical atrial flutter might occur during antiarrhythmic drug treatment, and atrial enlargement was a risk factor for the development of such an arrhythmia. Radiofrequency ablation and continuation of pharmacologic therapy offered a safe and effective means of achieving and maintaining sinus rhythm.

原文英語
頁(從 - 到)1180-1187
頁數8
期刊Journal of Cardiovascular Electrophysiology
10
發行號9
出版狀態已發佈 - 1999
對外發佈Yes

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ASJC Scopus subject areas

  • Cardiology and Cardiovascular Medicine
  • Physiology

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