平板运动试验与心率恢复在冠心病诊断中的应用价值

Diagnostic value of coronary artery disease in heart rate recovery after treadmill exercise test

目的评价平板运动试验后心率恢复在冠心病诊断中的应用价值。方法对219例拟诊为冠心病的患者行活动平板运动试验,根据运动试验结果分为运动试验阳性组85例和运动试验阴性组134例。计算运动后心率恢复值并进行比较,比较两组患者的心率恢复值、达标时间、静息心率及运动最大心率,同时将心率恢复异常作为冠心病的诊断标准,比较其与平板运动试验诊断冠心病的准确性。结果冠心病组运动后心率恢复值低于非冠心病组,差异有显著性;诊断冠心病的准确性与传统的ST段压低法相比,差异无显著性。而心率恢复与传统阳性结合诊断冠心病的准确性明显提高。结论冠心病组与非冠心病组相比,心率恢复异常有明显的差异,其与平板运动阳性联合诊断冠心病的准确性高,可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）. Method 219 subjects suspicious of coronary disease under-went treadmill exercise test and were divided into positive group and negative group according to treadmill exercise test. Heart rate recovery between the two groups was compared at the 1 st minute after the test. To compare between with abnormal heart rate recovery and with ST segment criteria for the diagnosis of CAD. Result The recovered rate at each tinle point was lower in the positive group than in the negative group. There were no significant differences in the accuracy between the traditional standards and heart rate recovery for CAD,the accuracy（82% ） of heart rate re-covery markedly elevated based on the positive outcomes of the traditional standards, respectively. Conclusion Heart rate recovery significantly differs between the positive group and the negative group. Abnormal heart rate recov-ery after the test can be used to diagnose CAD.