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目的：了解心肌酶谱对急性心肌梗死的诊断价值。方法：应用受试者特征（ＲＯＣ）曲线对１２９例急诊怀疑为急性心肌梗死的发病２４ｈ内就诊患者进行评价。结果：（１）急性心肌梗死组患者心肌酶谱各指标的平均水平均高于非急性心肌梗死组患者；（２）各指标的ＲＯＣ曲线下面积以肌酸激酶同工酶ＣＫＮＡ为最大（Ａ＝０．８７３），其余各项指标的面积介于０．７１２至０．７５８之间。结论：除ＣＫＮＡ具有较高的诊断价值外，其余各项指标的诊断价值不大。ＣＫＮＡ似以１６０ｕ作为诊断参考值最佳，此时灵敏度为８５．１％，特异度为８２．３％。
Objective: To understand the diagnostic value of myocardial enzymes in acute myocardial infarction. Methods: The characteristics of patients (ROC) curve were used to evaluate 129 patients who were diagnosed within 24 hours after onset of acute myocardial infarction. Results: (1) The average level of myocardial enzymes in patients with acute myocardial infarction was higher than that in patients without non-acute myocardial infarction; (2) The areas under the curve of ROC of each index were the CK-NA of creatine kinase (A = 0.873), the remaining indicators of the area between 0.712 to 0.758. Conclusion: In addition to CK NA has a higher diagnostic value, the remaining indicators of the diagnostic value is not. CK NA like 160u as the best diagnostic reference, the sensitivity was 85.1%, the specificity was 82.3%.