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女性患者,57岁。反复发作心前区疼痛一月余,加重1周于1989年10月20日入院。查体:心律齐,心率70次/min。X线心脏像、超声心动图无异常。患者于10月27日作活动平板运动试验检查。使用美国Marquette公司生产的CASE-12型活动平板运动试验自动控制、分析记录仪。采用BRUCE方案,选用极量标准的90％,即目标心率163次/min。对照心电图示窦性心率88次/min,正常心电图。血压22.5/12.0kPa。运动试验开始皮带转速1.7英里/h,坡度10.0％,以后每3分钟转速递增0.8英里/h,坡
Female patient, 57 years old. Recurrent anterior precordial pain more than a month, an increase of 1 week in October 20, 1989 admission. Physical examination: heart rate Qi, heart rate 70 beats / min. X-ray heart, echocardiography no abnormalities. Patients on October 27 for the activities of treadmill exercise test. The use of the United States Marquette company CASE-12-type treadmill exercise test automation control, analysis of the recorder. Using BRUCE program, choose the most standard 90%, that is, the target heart rate 163 times / min. Control ECG showed sinus heart rate 88 beats / min, normal ECG. Blood pressure 22.5 / 12.0kPa. Exercise test belt speed 1.7 miles / h, slope 10.0%, after every 3 minutes increase speed of 0.8 miles / h, slope