运动中ST段下移程度不同的心肌梗死后患者的心血管反应

目的：对运动中ST段下移程度不同的心梗后患者（PMIP）的心血管反应进行探讨。方法：46名男性PMIP在跑台上进行递增负荷运动实验．其间测量每级负荷时的血压、心率并连续监测12导联心电图（ECG）。根据跑台第Ⅱ级负荷时的ST段下移程度将其分为两组．第一组ST段下移〈1．0mm．第二组ST段下移〉1．0mm。结果：定量负荷工作时ST段下移程度大的患者其心率-血压乘积（RPP）也高。结论：当不便进行ECG监测时．RPP可能是评价患者对运动的临床反应的特效指标。

Cardiovascular responses between post myocardial infarction patients with different levels of ST segment depression during exercise

Objective:To investigate selected cardiovascular responses of post myocardial infarction patients(PMIP) during exercise within the context of different levels of ST segment depression. Method:Forty-six male recent PMIP performed a graded exercise test on a motorized treadmill during which time blood pressure and heart rate were measured and a 12 lead electrocardiogram(ECG) was monitored continuously. They were then subdivided into those ST segment depression <1.0 mm at exercise stage II (group 1) and those who had ST segment depression >1.0 mm at this stage(group 2). Result: The results showed that the patients with a larger degree of ST segment depression at the given work load exhibited higher a value of rate-pressure product (RPP).Conclusion: RPP may be of particular value in estimating the clinical response to exercise when ECG monitoring is not available.