急性心肌梗死(AMI)是冠心病的严重类型,是在冠状动脉病变的基础上发生冠状动脉血供急剧减少或中断,以致相应心肌发生持久而严重的心肌缺血,引起部分心肌缺血性坏死[1]。临床上表现为严重而持久的胸部闷痛,常并发心力衰竭、休克与心律失常,是心脏猝死的主要原因,因此做好早期诊 Acute myocardial infarction (AMI) is a severe type of coronary heart disease, which is a sudden reduction or interruption of coronary blood supply on the basis of coronary artery disease, resulting in persistent and severe myocardial ischemia corresponding to the myocardium causing partial myocardial ischemic necrosis [1]. Clinical manifestations of severe and persistent chest pain, often complicated by heart failure, shock and arrhythmia, is the main cause of sudden cardiac death, so early diagnosis