The therapeutic effects of modified Cox-Maze Ⅲ procedure using bipolar radiofrequency ablation for rheumatic valve disease combined with permanent atrial fibrillation

Objective The present study was designed to evaluates the short term effect of modified Cox-Maze Ⅲ procedure using bipolar radiofrequency ablation (BPRF) on the combination of rheumatic valve disease and long-standing permanent atrial fibrillation(AF). Methods Thirteen cases of rheumatic valve dis-ease with permanent AF received BPRF modified Cox-Maze Ⅲ procedure using the Medtronic Cardioblate BP system from May 2007 to May 2008. The therapeutic effect was evaluated. Results The average age of the pa-tients were 56.5 (range 44-65) years,average duration of AF were 5 (2-11) years and the average left atrial diameter was (55.1±5.9) mm. No mortalities or severe complications were seen in all the 13 patients during the study period. The average time for cross clamping of the aorta was 10 min. The AF was disappeared in all 13 patients immediately after the procedure. Successful restoration of sinus rhythm has been achieved in 12 pa-tients (92.3%) during the follow-up of 6-17 (9.2±3.2) months,while one patient had recurrence of AF. Conclusion The Cox-Maze Ⅲ procedure with BPRF using the Medtronic Cardioblate BP system is a safe and effective treatment for patients suffering from rheumatic valve disease combined with permanent AF. ±3.2