运动诱导的ST段改变是运动试验判断心肌缺血的主要标准,但在确定病变血管的部位时却缺乏特异性[1 ] 。虽然运动诱导的ST段抬高比ST段压低少见得多,但通常被认为是严重局部心肌缺血的反映,其原因可能包括冠状动脉痉挛[2 ]或者冠脉严重狭窄[3]。运动诱导ST段改变的发生率,因人群 Exercise-induced changes in ST segment are the major criteria for exercise testing to determine myocardial ischemia, but lack specificity in determining the location of the diseased vessel [1]. Although exercise-induced ST elevation is much less common than ST depression, it is often thought of as a reflection of severe regional myocardial ischemia, which may be due to coronary spasm [2] or severe coronary stenosis [3]. The incidence of exercise-induced ST segment changes due to population