Objective: To evaluate the clinical value of heart rate recovery loop (HRRL) during treadmill exercise test in the detection of coronary artery disease (CAD).

目的：评价平板运动试验心率恢复环(HRRL)在冠心病(CAD)诊断中的价值。

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Objective:To determine the diagnosis value of ST change in different lead of electrocardiogram(ECG) during treadmill exercise test in patients with coronary artery disease(CAD).

目的：总结平板运动试验中不同导联ST改变对冠心病的诊断价值。

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