急性心肌梗塞(AMI)时,心肌细胞坏死,多种酶体蛋白质及其分解产物可释放入血,如肌酸激酶(CK)、乳酸脱氢酶(LDH)、β-烯醇化酶(β-Enolase)、磷脂酶A_2(PLA_2)、谷草转氨酶(AST)等这些物质的变化,可以即时诊断新发、再发AMI及AMI的范围,可以在AMI后4小时确诊,并能推算出AMI发病时间,决定是否采取溶栓疗法,还可以作为溶栓后再灌注的早期指标.本文就近几年来上述四种酶类在AMI诊断方面的新进展作一综合. Acute myocardial infarction (AMI), myocardial necrosis, a variety of protein and its degradation products can release into the body, such as creatine kinase (CK), lactate dehydrogenase (LDH), β-enolase (β- Enolase, PLA_2, AST and so on, we can diagnose the newly diagnosed, recurrent AMI and AMI range, which can be diagnosed 4 hours after AMI, and we can calculate the onset time of AMI , To decide whether to take thrombolytic therapy, but also as an early indicator of reperfusion after thrombolysis.In this paper, the above four enzymes in recent years in the diagnosis of AMI new progress made a comprehensive.