平板运动试验和动态心电图联合检查对评估冠状动脉狭窄程度的预测价值

目的：为了明确活动平板运动试验和动态心电图联合检测对冠状动脉病变的预测价值。方法：选取冠状动脉造影阳性且造影前3个月内做平板运动试验和动态心电图的患者165例，冠状动脉造影用通用直径法确定冠状动脉狭窄程度，并与平板运动试验和动态心电图的结果进行对比观察。结果：平板运动试验中ST段下移出现越早，ST段下移程度越大，持续时间越长，冠状动脉狭窄程度越重。冠状动脉造影阳性而平板运动试验阴性者，多为单支病变或者病变程度较轻；平板运动试验的敏感性为71．8％，特异性为80．5％，动态心电图的敏感性为63．7％，特异性为78．1％。结论：活动平板运动试验和动态心电图联合检测可提高冠心病诊断的准确性。

The Predictive Value in the Assessment of the Degree of Coronary Artery Stenosis through the Joint Inspection of Exercise Treadmill Test and Dynamic Electrocardiogram

Objective： To define the predictive value of the joint detection of between exercise treadmill test and dynamic electrocardiogram in the diagnosis of coronary artery leslons.Method： 165 patients who were found coronary angiography positive and did treadmill exercise test and dynamic electrocardiogram within 3 months before angiography were selected. Coronary angiography employed the general method of diameter to determine the degree of coronary artery stenosis whose results were compared with the results of exercise treadmill test and dynamic electrocardiogram.Result： In the exercise treadmill test, the sooner ST segment depression appeared , the greater degree ST segment depression showed, the longer duration of ST segment depression lasted, the more severe coronary artery stenosis was. The patient who was found positive in coronary angiography and negative in exercise treadmill test was mostly single lesions or a lesser degree of lesions. The sensitivity of exercise treadmill test was 71.8%, and its specificity was 80.5%. The sensitivity of the dynamic electrocardiogram was 63.7%, and its specificity was 78.1%. Conclusion： The diagnostic accuracy of coronary heart disease can be improved by the combination of exercise treadmill test and dynamic electrocardiogram.