平板运动试验后心率恢复对冠心病诊断价值的研究

Diagnostic Value of Heart Rate Recovery after Treadmill Exercise Test to Patients with Coronary Artery Disease

目的评价平板运动试验后心率恢复的意义及其对冠心病的诊断价值。方法76例拟诊冠心病患者行平板运动试验,根据冠状动脉造影结果分为冠心病组和非冠心病组。计算运动后1、2、3、4、5、7 min心率恢复值并比较,利用运动后心率恢复异常作为诊断冠心病标准与传统的ST段压低法比较。结果冠心病组的患者运动后各时段心率恢复值均低于非冠心病组。以运动后1、2 min心率恢复异常作为诊断冠心病的标准,与传统的ST段压低法相比,其敏感性无差别,特异性较高。结论冠心病组与非冠心病组比较,运动后心率恢复存在明显差异,说明运动后心率恢复异常可以作为诊断冠心病的方法之一。

Objective To evaluate the significance of heart rate recovery after treadmill exercise test and its clinical value in the detection of coronary artery disease （CAD）. Methods Methods Seventy-six subjects suspicious of coronary disease underwent treadmill exercise test and were divided into CAD group and non-CAD （NCAD） group according to coronary artery angiogram, Heart rate recovery between the two groups was compared at the 1st, 2nd, 3rd, 4th, 5th, and 7th minute after the test. The sensitivity and specificity were compared between with abnormal heart rate recovery and with ST segment eriteria for the diagnosis of CAD. Results The recovered rate at each time point was lower in the CAD group than in the NCAD group. The two diagnostic methods had the same sensitivity but the former had higher specificity. Conclusion Heart rate recovery significantly differs between the CAD group and the NCAD group. Abnormal heart rate recovery after the test can be used to diagnose CAD.