Intraoperative treatment for atrial fibrillation using dry Bi-polar radiofrequency ablation system
CUI Yong-qiang
MENG Xu
LI Yan
HAN Jie
WANG Jian-gang
Abstract：Objective To observe the short and mid-term therapeutic effects of dry Bi-polar ablation systems for intraoperative treatment of atrial fibrillation (AF).Methods Between March 2005 and August 2009, a total of 208 patients received intraoperative treatment of atrial fibrillation with dry Bi-pelar ablation systems, including 40 cases of paroxysmal atrial fibrillation and 168 persistent/permanent cases.The main concomitant heart operations were rheumatic mitral valve diseases.Three groups of ablation lesion patterns were included: Cox-maze Ⅲ, Modified Cox Mini-maze, Left-sided Maze.Results Mean ablation time was (7.1 ±3.2)min; no ablation-related complications occurred.9 perioperative deaths.3 patients had permanent pacemaker implantation 3～6 months after operation.1 case suffered from stroke and lower limb thrombosis 2.5 years after operation, and overall stroke rate was 0.5%.Follow-up lasted for 5～58 months.Compared to a Uni-polar Ablation therapy group during the same period, the restoration of sinus rhythm in this Bi-polar group was significantly higher at 6 months and ≥ 12 months postoperatively.The latest follow-up results showed that 92.5% of preoperative paroxysmal atrial fibrillation patients restored sinus rhythm and 72.1% of persistent/permanent patients are free from atrial fibrillation.Also among 60 patients who had left atrial dynamic observation with ultrasound cardiogram exam in the latest follow-up, 57(95.0%)restored the left atrial function with a mean Peck A-wave (89.3 ± 22.6)cm/s.Conclusions Intraoperative radiofrequency ablation with dry Bi-polar systems is a feasible, safe and highly effective surgical option.Presenting superior therapeutic outcomes, compared to the Uni-pelar ablation technique, dry Bi-pelar Radiofrequency ablation is considered to be the future direction of technology in the field of surgical treatment for atrial fibrillation in China.
Keywords：Atrial fibrillationArrhythmia surgeryCox-maze procedure
Publication Date：2010-01-01
Online Publishing Date：2026-09-14(First online date of this platform, not the publication date of the document)