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在急性心肌梗塞(AMI)的诊断中,生化测定已被公认为一个重要指标。尤其是当心电图改变不典型时,更具有诊断意义。本文仅将临床诊断价值较高的生化诊断指标,结合自己的测定结果作一综述。一、肌酸磷酸激酶同工酶 1.生化性能:肌酸磷酸激酶(CPK)主要存在于骨骼肌和心肌,其次分布在脑组织。CPK有三种同工酶,即MM、BB和MB型。其中MB型为心肌所特有。CPK及MB分子量均为8万,但两者的半衰期不同,MB半衰期为6～8小时,而CPK为10～15小
In the diagnosis of acute myocardial infarction (AMI), biochemical determination has been recognized as an important indicator. Especially when ECG changes are not typical, more diagnostic significance. This article only the clinical diagnosis of higher biochemical diagnostic indicators, combined with their own measurement results for a review. First, creatine phosphokinase isoenzyme 1. Biochemical properties: Creatine phosphokinase (CPK) is mainly present in skeletal muscle and myocardium, followed by distribution in the brain tissue. CPK has three isozymes, namely MM, BB and MB type. MB type which is unique to the myocardium. CPK and MB molecular weight of 80,000, but the two half-lives are different, MB half-life of 6 to 8 hours, while the CPK is 10 to 15 small