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本文应用Ｄｏｐｐｌｅｒ超声心动图，结合同步描记的心电图，测定了４０例冠心病病人左室收缩功能和舒张功能的改变，与正常组３０例进行对照，检测项目相同。研究目的：探索Ｄｏｐｐｌｅｒ超声心动图评定左室早期功能改变的敏感指标。结论：１．４０例冠心病病人中，２７例出现了异常，其中１４例心功能改变仅存在于舒张期。２．缺血心肌收缩期频谱的峰值较正常组明显下降，其下降程度与心肌缺血程度有关。３．舒张期指标是判定心肌缺血较敏感的指标。
In this paper, Doppler echocardiography, combined with synchronous electrocardiogram, measured 40 cases of coronary heart disease patients with left ventricular systolic and diastolic function changes, compared with the normal group of 30 cases of control, the same test items. Objective: To explore the sensitive index of Doppler echocardiography in assessing early left ventricular function changes. Conclusion: Among the 40 patients with coronary heart disease, 27 cases showed abnormalities, of which 14 cases had cardiac function changes only in diastole. 2. The peak of systolic frequency spectrum of ischemic myocardium was significantly lower than that of the normal group, and the degree of decrease was related to the degree of myocardial ischemia. 3. Diastolic index is to determine the more sensitive indicators of myocardial ischemia.