关键词: 超声心动图;冠脉介入术;室壁节段运动指数;左室射血分数;心功能不全

    摘 要:目的 研究采用小剂量多巴酚丁胺超声心动图检测存活心肌数量对心肌梗死心功能不全患者冠脉介入术的影响. 方法 30名左室射血分数(LVEF)小于50%的心肌梗死患者，于冠脉介入术前，采用小剂量多巴酚丁胺超声心动图(LDDE)(即多巴酚丁胺剂量为5μg·kg-1 ·min-1 ，10μg·kg-1 ·min-1 )检测存活心肌，并分别于术前及术后1wk，1mo和3mo观察室壁节段运动指数(WMSI)和LVEF的变化. 结果 存活心肌大于等于4个节段的患者，术后1mo和3mo WMSI和LVEF均较术前明显改善;存活心肌小于4个节段的患者，术后1wk，1mo和3mo WMSI和LVEF没有显著变化;存活心肌大于等于4个节段的急性心梗(AMI)患者术后1mo WMSI和LVEF即有明显改善，陈旧性心梗(OMI)于术后3mo方有明显改善. 结论 心肌梗死伴心功能不全患者，经LDDE检测存活心肌大于等于4个节段，冠脉介入术能使患者最大获益;心梗患者尽早行冠脉介入术能使患者心功能尽早恢复.

    Low┐dose dobutamine echocardiography predicts im┐provement of left ventricular function after coro┐nary intervention in patients with myocardial in┐farction

    LI Huan LI Cheng-Xiang JIA Guo-Liang ZHANG Yu-Shun GUO Wen-Yi WU Qiao-Ying LI Nan

    1 Department of Cardiovasology，

    2 Department of Ul-trasonography，Xijing Hospital，Fourth Military Medical University，Xi'an710033，China

    Keywords:echocardiography;coronary intervention;wall motion score index;left ventricular ejection frac-tion;left ventricular dysfunction

    Abstract:AIM To study the value of low-dose dobutamine echocardiography(LDDE)to coronary intervention in pa-tients with myocardial infarction with left ventricular dys┐function.METHODS Thirty patients with myocardial in-farction(left ventricular ejection fraction ......