简化三维电解剖标测指导峡部依赖性心房扑动的消融

目的探讨简化三维电解剖标测指导峡部依赖性心房扑动(简称房扑)消融的有效性。方法 59例峡部依赖性房扑患者,分别接受多极导管指导的常规法消融(n=22)及简化三维电解剖标测指导的消融(Carto法,n=37)。消融终点设定为双向跨越峡部的传导完全阻滞。结果 56例消融成功,两组成功率分别为86.4%和100%,(P=0.047);两组复发率分别为15.8%和0%,(P=0.035);Carto组较常规组手术耗时更短(68.2±6.9 min vs101.4±15.4 min,P<0.01)、X线暴露时间少(5.8±2.2 min vs 18.1±3.7 min,P<0.01),且射频消融时间更短(9.1±4.1 min vs 14.8±6.0 min,P<0.001)。3例常规组消融失败患者二次消融时交叉入Carto组均获得手术成功。Carto组显示峡部宽度的增加提示更长的X线暴露时间及射频消融时间。结论简化的峡部三维重建对指导峡部依赖性房扑的消融具有优势,且对常规法术后复发的房扑再次消融能获得有效成功。

Usefulness of simplified isthmus electro-anatomical reconstruction in ablation of isthmus dependant atrial flutter

Objective To investigate the usefulness of simplified isthmus electro-anatomical reconstruction in ablation of isthmus dependant atrial flutter(IDL). Method Fifty-nine patients were enrolled in this study and divided into 2 groups.22 were included in Group 1,using a multipolar catheter guided radiofrequency catheter ablation(RFCA) approach(conventional group),while other 37 were included in Group 2,applying with a simplified isthmus electro-anatomical reconstruction based approach(Carto group).Study endpoin...