多巴酚丁胺多普勒超声心动图评价心肌梗塞后左室收缩功能储备

Doppler Echocardiography with Dobutamine Assessd the Left Ventricular Contractile Reserve in Patients with Old Myocardial Infarction

应用脉冲多普勒超声心动图观察静注多巴酚丁胺（Ｄｏｂ）对心肌梗塞（ＭＩ）后左室收缩功能各项参数的影响。经Ｄｏｂ超声心动图检测，将２６例陈旧性心肌梗塞患者分为存活心肌（ＶＭ）组和无存活心肌（ＮＭ）组；分析比较用药前后多普勒之收缩功能参数的变化情况。结果：主动脉瓣口的峰值血流速度、峰值加速度、血流速度积分和心搏出量、心排出量及其变化率ＶＭ组明显大于ＮＭ组。

Observed the effecting on parameters of left ventricular systolic function after myocardial infarction during infusion dobutamine(Dob) by pulse Doppler echocardiography. Twenty six patients with old myocardial infarction received the tests of two dimensional echocardiography with Dob and were divided into viable myocardium(VM) group and non viable myocardium(NM) group. The parameters of left ventricular systolic function AOPK, ACC, SV, CO, SVI and their change rates were analyzed and compared. Those parameters in VM group showed a greater increase than those in NM group. This indicated that above parameters are new useful means in evaluating myocardial contractile reserve in infarct zone and global function of left ventricular(LV).