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动物实验及患者的运动试验与冠状动脉造影显示,ST段的改变能反映心肌缺血,ST段抬高较ST段压低表示具有更为严重的缺血。曾有人应用ST段抬高的持续时间与辐度,以及ST段抬高的导联数来进行诊断及估计预后。标准导联中ST段抬高的早期恢复表示对急性心肌梗塞患者的治疗有效。采用多个体表电极来测定人体表面ST段的偏移,可在标准导联呈异常、以及某些标准导联正常的急性心肌梗塞患者中,录得异常的图型。Maroko等曾指出,多个胸前导联中ST段抬高数值的总和可用以作为组织损伤的指数,ST段抬高的导联数则可表示心肌缺
Animal experiments and patients with exercise test and coronary angiography showed that changes in ST segment can reflect myocardial ischemia, ST segment elevation than ST segment depression has more severe ischemia. Some people have used ST segment elevation duration and amplitude, as well as the number of ST segment elevation leads to diagnosis and prognosis. Early recovery of ST segment elevation in standard leads indicates efficacy in the treatment of patients with acute myocardial infarction. The use of multiple body surface electrodes to measure the deflection of the ST segment on the surface of the human body can result in abnormal patterns in the standard leads and in some patients with normal-lead acute myocardial infarction. Maroko et al have pointed out that the sum of ST elevation values in multiple thoracic leads can be used as an index of tissue damage and the number of leads in ST elevation can represent myocardial deficits