持续性ST-T改变对慢性心肌缺血诊断价值的探讨

Study of value of sustained electrocardiogram ST-T change in chronic myocardial ischemia

目的探讨静息心电图持续性ST-T改变与慢性冠状动脉供血不足之间的关系。方法观察168例持续性ST-T改变患者选择性冠状动脉造影术和活动平板运动试验等结果。结果34例(20.2%)造影发现有冠状动脉狭窄,其中活动平板运动试验阳性者32例,占冠状动脉狭窄病例的94.1%。运动试验阳性者42例中冠状动脉狭窄者32例(76.2%)。结论静息心电图持续性ST-T改变不是慢性心肌缺血的特异性改变,绝大多数(79.8%)并非由冠状动脉狭窄引起,应努力寻找其他原因。

Objective To investigate relationship between patients in rest with sustained ECG ST-T change and chronic myocardial ischemia. Methods One hundred sixty eight cases in rest with sustained ECG ST-T change was diagnosed by selective coronary angiography (SCA) and exercise treadmill ECG-test. Results Thirty four cases(20.2%) was diagnosed coronary artery stenosis, in it, 32 cases was diagnosed exercise treadmill ECG-test positive(94.1%). In 42 cases with exercise treadmill ECG-test positive, 32 cases was diagnosed coronary artery stenosis(76.2%). Conclusion We don't diagnose chronic myocardial ischemia by patient in rest with sustained ECG ST-T change, change is not almost introduce from coronary artery stenosis (79.8%), and we should try to find out other causes.