The early outcome of atrial fibrillation treated by bipolar radiofrequency ablation modified maze procedure

Objective:To evaluate the early outcomes of bipolar radiofrequency ablation modified maze procedure for treating atrial fibrillation in valve replacement.Methods:From September 2011 to September 2012,bipolar radiofrequency was used to perform modified maze procedure for 39 patients with atrial fibrillation in valve replacement,including male 16 cases,female 23 cases.The age distribution was from 23 to 69 years.28 cases of mitral valve replacement,11 cases of double valve replacement,add tricuspid valve plasty in 26 cases.ECG was performed preoperatively,at ICU,and at discharge,after 1 month,3 months to determine the early effect of bipolar radiofrequency ablation modified maze procedure.89 patients who had received valve replacement by the same surgeon in the same period were divided into control group.Results: In the radiofrequency ablation group,34 patients was returned to sinus rhythm while atrial fibrillation remained in 3 patients at discharge(atrial fibrillation elimination coefficient was 87.1%).The patients took amiodarone for 3 months.At 3-month follow-up,35 patients remained in sinus rhythm(Atrial fibrillation elimination coefficient was 89.7%).The total drainage of the first 3 postoperative days statistics in Ablation group was more than control group(P0.05).The CPB time of Ablation group was more than control group(P0.05).There was no significant difference in surgical complications between Ablation group and control group(P0.05).Conclusion: Bipolar radiofrequency ablation modified maze procedure is a safe and simple method for treating atrial fibrillation.The early outcome is very good.