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目的观察冠心病患者平板运动试验QT离散度变化。方法选取疑似冠心病患者128例,进行冠状动脉造影并分为冠心病组80例、正常组48例,观察比较平板运动试验QT离散度。结果冠心病组与正常组运动前QT离散度有显著差异性,并且在运动中差异进一步扩大,运动后仍有显著差异性(P<0.05)。结论活动平板运动试验QT离散度联合ST段指标观察能显著提高对冠心病诊断率,是简单、无创性检测方法,值得临床重视。
Objective To observe the QT dispersion of treadmill exercise test in patients with coronary heart disease. Methods 128 patients with suspected coronary heart disease were selected for coronary angiography and were divided into coronary heart disease group (80 cases) and normal group (48 cases). The QT dispersion of treadmill exercise test was compared. Results There was a significant difference in QT dispersion between CHD group and normal group before exercise, and the difference was further enlarged during exercise. There was still significant difference after exercise (P <0.05). Conclusions The observation of QT dispersion and ST segment index in active treadmill exercise test can significantly improve the diagnostic rate of coronary heart disease. It is a simple and noninvasive detection method that deserves clinical attention.