外科射频消融改良迷宫术治疗大左心房心脏瓣膜病并发心房颤动的临床疗效

摘要

目的:探讨外科射频消融改良迷宫术治疗大左心房(左心房前后径≥60 mm)心脏瓣膜病并发心房颤动的临床疗效.方法: 回顾性分析2014-01至2015-12在我院行心脏瓣膜置换术并同期采用Medtronic双极消融系统按改良迷宫Ⅲ手术路线射频消融(射频消融改良迷宫术)治疗心房颤动的风湿性心脏病患者267例.根据左心房大小将患者分为左心房前后径<60 mm组(n=182)和左心房前后径≥60 mm组(n=85).术后进行系统随访至少6个月,对比两组患者外科射频消融改良迷宫术治疗心房颤动的疗效.结果:(1)所有患者手术均顺利完成,射频消融时间左心房前后径<60 mm组18~32(24±4)min,左心房前后径≥60 mm组22~38(25±6)min,差异无统计学意义(P>0.05).(2)恢复窦性心率患者的构成比:手术结束及出院时左心房前后径<60 mm组分别为156例(86%)、152例(84%),左心房前后径≥60 mm组分别为 56例(66%)、54例(64%);术后3个月、6个月,左心房前后径<60 mm组分别为149例(81.6%)和146例(80.2%),左心房前后径≥60 mm组为48例(56.4%)和46例(54.1%),差异均有统计学意义(P均<0.05).(3)267例患者,均无需安装永久起搏器,无手术死亡和射频相关并发症.结论: 射频消融改良迷宫术治疗心脏瓣膜病合并心房颤动,左心房前后径≥60 mm组的疗效逊于左心房前后径<60 mm组,但总体疗效仍是安全、简便,有一定的疗效.大左心房的心脏瓣膜病患者心房颤动射频消融改良迷宫术仍值得在临床推广应用.%Objective: To explore the clinical efficacy of surgical radiofrequency ablation-modified Maze procedure in treating atrial fibrillation (AF) patients with large left atrial heart valve disease. Methods: A total of 267 patients received cardiac valve replacement and radiofrequency ablation-modified Maze procedure at the same time in our hospital from 2014-01 to 2015-15 were retrospectively studied. Based on the size of left atril, patients were divided into 2 groups: Group A, patients with left atrial size<60 mm, n=182 and Group B, patients with left atrial size≥60 mm, n=85. All patients were followed-up for 6 months after operation, clinical efficacy of surgical radiofrequency ablation-modified Maze procedure in treating AF was compared between 2 groups. Results: ①All patients were successfully completed the operation, radiofrequency ablation time was similar between Group A and Group B [18-32 (24±4) min] vs [22-38 (25±6)min], P>0.05. ②The ratios for recovering to sinus rhythm at the end of operation and discharge in Group A were 156/182 (86%) and 152 (84%), in Group B were 56/85 (66%) and 54 (64%); at 3 and 6 months post-operation in Group A were 149/182 (81.6%) and 146 (80.2%), in Group B were 48/85 (56.4%) and 46 (54.1%), all P<0.05. ③No patients needed installing permanent pacemaker, no operative mortality and no ablation related complications.Conclusion: Radiofrequency ablation-modified Maze procedure was safe, simple and effective in treating heart valve disease complicated AF, the effect in patients with left atrial ≥60 mm was inferior than left atrial<60mm; it could be used in clinical practice.