心电图TET结合QT离散度对冠心病的诊断分析

Clinical analysis of treadmill exercise test with QT dispersion in coronary heart disease

目的实现对冠心病进行有效、无创、经济地诊断分析。方法对50例疑似冠心病患者进行心电图运动负荷试验,并结合QT离散度与冠状动脉血管造影观察结果分析比较。结果平板运动试验阳性诊断冠心病的敏感性、特异性、准确性分别为78.57%、81.82%、80.00%,运动后QT离散度诊断冠心病的敏感性、特异性、准确性分别为89.29%、95.45%、92.00%。结论运动负荷试验与QT离散度结合使用与单纯TET相比,对冠心病的诊断敏感性和特异性明显升高,对冠心病诊断准确性的提高更有意义。

Objective To diagnose coronary heart disease accurately,noninvasively and economically.Methods 50 cases suspected with coronary heart disease were tested positive by treadmill exercise test and QT dispersion,and contrast with the result of Coronary Angiography.Results The trial sensitivity of TET was 78.57%,with the specificity was 81.82% and the accuracy was 80.00%.The sensitivity of QT dispersion was 89.29% with the specificity was 95.45% and the accuracy was 92.00%.Conclusion Diagnosis of coronary heart disease by using TET with QT dispersion can obviously raise sensitivity and accuracy than TET alone.