龙德勇,孙莉萍,王琎,喻荣辉,汤日波,桑才华,蒋晨曦,李松南,胡宇才,杜昕,董建增,马长生

• 1:首都医科大学附属北京安贞医院心内科

摘要(Abstract)：

目的探讨左心室前乳头肌起源的室性早搏(premature ventricular contraction,PVC)消融特征。方法纳入2015年1月至2016年6月北京安贞医院收治的10例左心室前乳头肌起源的PVC/室性心动过速(ventricular tachycardia,VT),采用三维电解剖标测系统联合三维心腔内超声技术,术中经三维超声证实有效靶点位于左心室前乳头肌,完成电生理标测和消融。分析该部位起源的PVC/VT的心电图特征、腔内靶点图特点、解剖结构等消融特点。结果 10例患者均成功消融,随访12个月1例复发,均未出现相关并发症。靶点分别位于乳头肌近腱索处1例、中段4例及基底部5例;7例位于间隔前乳头肌,3例位于游离壁乳头肌;1例穿刺右侧股动脉,9例经右侧股静脉入径,穿刺房间隔顺行法消融成功。早搏QRS波时限(152.80±11.72)ms,其中6例患者在PVC/VT时靶点处可记录到提前的高频电位。结论左心室前乳头肌起源PVC/VT心电图有别于左前分支起源PVC/VT的特征,经房间隔穿刺途径容易到达靶点位置,应用三维超声可准确定位左心室前乳头肌起源室性心律失常消融靶点。

关键词(KeyWords)： 前乳头肌;三维超声;房间隔穿刺

Abstract:

Keywords:

基金项目(Foundation): 北京市博士后基金支持(2015ZZ-64)

作者(Author): 龙德勇,孙莉萍,王琎,喻荣辉,汤日波,桑才华,蒋晨曦,李松南,胡宇才,杜昕,董建增,马长生

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