目的 :研究口服心得安试验在心电图ST -T异常者鉴别诊断中的意义。方法 :选择体检 12 0例心电图ST -T异常者 ,2 0岁以上 74例 (男 3 8例 ,女 46例 ) ,40岁以上 46例 (男 16例 ,女 3 0例 )。另选择心肌炎及冠心病病人作对照。进行口服心得安试验 ,观察其阳性率。结果 :口服心得安试验 ,体检组 2 0岁以上阳性率为 89 2 % ,40岁以上阳性率为 84 6% ;心肌炎组阳性率为17 4% ,冠心病组阳性率为 6 5 %。结论 :口服心得安试验对鉴别器质性与功能性心脏病正确率高 ,简便安全 ,仍不失为一种无创的有效诊断方法 Objective: To study the significance of oral propranolol in the differential diagnosis of ST-T abnormalities in ECG. Methods: One hundred and twenty STO abnormal ECGs were selected, 74 patients were over 20 years old (38 males and 46 females), 46 patients over 40 years old (16 males and 30 females). Another choice of myocarditis and coronary heart disease patients as a control. Oral propranolol test, observe the positive rate. Results: The oral propranolol test showed that the positive rate was 89 2% in the examination group and 84 6% in the 40-year-old group. The positive rate in myocarditis group was 17.4% and the positive rate in coronary heart disease group was 65%. Conclusions: Oral propranolol test for the identification of organic and functional heart disease, high accuracy, simple and safe, is still a non-invasive and effective method of diagnosis