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为探讨急性心肌梗死（ＡＭＩ）发病后３ 周内不同时间左室功能的动态变化，应用彩色多普勒二维超声心动图对３２ 例ＡＭＩ患者分别于发病后１ 周、２ 周和３ 周连续测量并计算左室收缩功能和舒张功能的各项指标，并对其结果作对比分析。结果发现３２ 例ＡＭＩ患者中，１８例（５６％ ）有左室功能的降低，其主要变化为：左室舒张末期和收缩末期容积显著增加，而射血分数、短轴缩短率、平均周边纤维缩短速率明显降低（Ｐ＜ ０．０１），二尖瓣舒张早期峰值血流速度减慢，晚期峰值血流速度增加。从ＡＭＩ后１ 周到３ 周，左室功能进行性发展，以左室容积的增加最为突出。可见ＡＭＩ后左室功能严重受损，其中左室容积的改变可作为早期评价左室功能的一个良好指标
To investigate the dynamic changes of left ventricular function at different time points after acute myocardial infarction (AMI) within 3 weeks after onset of acute myocardial infarction (AMI), 32 patients with AMI were assessed with color Doppler echocardiography at 1 week, 2 weeks and 3 weeks after onset of AMI Measurement and calculation of left ventricular systolic and diastolic function of the indicators, and the results for comparative analysis. The results showed that in 32 patients with AMI, 18 patients (56%) had decreased left ventricular function, the main changes are: left ventricular end-diastolic volume and end-systolic volume increased significantly, while ejection fraction, short axis shortening, average peripheral fibers The rate of shortening was significantly reduced (P <0.01), mitral valve peak early diastolic blood flow velocity slowed down, late peak blood flow velocity increased. From 1 week to 3 weeks after AMI, left ventricular function progressed to the most prominent increase of left ventricular volume. Can be seen after severe left ventricular dysfunction AMI, which changes in left ventricular volume can be used as early assessment of left ventricular function is a good indicator