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在冠心病患者中,运动常能引起隐匿性心肌缺血,但对于无心绞痛者ST段变化的意义尚有争议。本研究旨在比较有痛和无痛性心肌缺血患者的临床和冠脉造影特征。方法:473名造影证实的冠心病患者中,男448例,女25例。运动时水平或下斜型ST段压低均在0.1mV以上。合并有瓣膜病的心衰、LBBB、变异型心绞痛及使用洋地黄的患者均被除外。踏车起始功率为25W,随后每三分钟增加25W。运动前、后、及恢复
In patients with coronary heart disease, exercise can often cause occult myocardial ischemia, but the significance of ST segment changes in patients without angina is still controversial. This study aimed to compare clinical and angiographic characteristics of patients with painful and painless myocardial ischemia. Methods 473 angiography confirmed coronary heart disease patients, 448 males and 25 females. Exercise level or down ramp ST-segment depression are more than 0.1mV. Patients with valvular heart failure, LBBB, variant angina, and digitalis were excluded. The starting power of the treadmill is 25W, then increase by 25W every three minutes. Before exercise, after, and recovery