Double multielectrode mapping catheters facilitate radiofrequency catheter ablation of focal atrial fibrillation originating from pulmonary veins

Ming Hsiung Hsieh, Shih Ann Chen, Ching Tai Tai, Chin Feng Tsai, V. S. Prakash, Wen Chung Yu, Chuen Chia Liu, Yu An Ding, Mau Song Chang

研究成果: 雜誌貢獻文章同行評審

106 引文 斯高帕斯(Scopus)

摘要

Ablation of Focal AF. Introduction: Several reports have demonstrated that focal atrial fibrillation (AF) may arise from pulmonary veins (PVs). The purpose of this study was to investigate the safety and efficacy of using double multielectrode mapping catheters in ablation of focal AF. Methods and Results: Forty-two patients (30 men, 12 women, age 65 ± 14 years) with frequent attacks of paroxysmal AF were referred for catheter ablation. After atrial transseptal procedure, two long sheaths were put into the left atrium. Two decapolar catheters were put into the right superior PV (RSPV) and left superior PV (LSPV), or inferior PVs if necessary, guided by pulmonary venography. All the patients had spontaneous initiation of AF either during baseline (2 patients), after isoproterenol infusion (8 patients) or high- dose adenosine (2 patients), after short duration burst pacing under isoproterenol (14 patients), or after cardioversion of pacing-induced AF (16 patients). The trigger points of AF were from the LSPV (12 patients), RSPV (8 patients), and both superior PVs (19 patients). The trigger points from PVs (total 61 points) were 18 (30%) in the ostium of PVs and 43 inside the PVs (9 to 40 mm). After 6 ± 3 applications of radiofrequency energy, 57 of 61 triggers were completely eliminated, and the other 4 triggers were partially eliminated. During a follow-up period of 8 ± 2 months, 37 patients (88%) were free of symptomatic AF without any antiarrhythmic drugs. Twenty patients received a transesophageal echocardiogram, and 19 showed small atrial septal defects (2.8 ± 1.2 mm) with trivial shunt. Fifteen defects closed spontaneously 1 month later. Conclusion: The technique using double multielectrode mapping catheters is a relatively safe and highly effective method for mapping and ablation of focal AF originating from PVs.
原文英語
頁(從 - 到)136-144
頁數9
期刊Journal of Cardiovascular Electrophysiology
10
發行號2
出版狀態已發佈 - 1999
對外發佈

ASJC Scopus subject areas

  • 心臟病學與心血管醫學
  • 生理學

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