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作者研究了肌酸激酶(CK)正常但 MB 同功酶(CK-MB)增加,对急性心肌梗塞的意义。研究对象为400例可疑急性心肌梗塞患者,均测定12导联心电图、CK 和 CK-MB,CK≥160IU/L、CK-MB≥5IU/L 列为增加。400例中350例 CK 和CK-MB 均增加(组Ⅰ);21例仅 CK-MB 增加(组Ⅱ);24例 CK 和 CK-MB 均正常(组Ⅲ);5例仅CK 增加(组Ⅳ)。组Ⅳ例数太少,未作深入分析。入院时,组Ⅰ中心电图 ST 段上升者占78％,组Ⅱ中占10％,组Ⅲ中占8％(X~2=82,P<0.0001)。组Ⅱ、Ⅲ中 ST 段下降或心电图正常的人数较多。
The authors studied the normal creatine kinase (CK) but MB isoenzyme (CK-MB) increased, the significance of acute myocardial infarction. The subjects were 400 patients with suspected acute myocardial infarction, 12-lead ECG, CK and CK-MB, CK≥160IU / L, CK-MB≥5IU / L were measured as increased. The CK and CK-MB were increased in all of the 400 cases (group Ⅰ), only CK-MB was increased in 21 cases (group Ⅱ), CK and CK-MB were normal in all 24 cases (group Ⅲ) Ⅳ). There are too few cases in group Ⅳ, and no further analysis was done. At admission, 78% of patients in group I were found to have ST-segment elevation, 10% in group II, and 8% in group III (X 2 = 82, P <0.0001). In group Ⅱ, Ⅲ, there were more ST-segment depression or normal electrocardiogram.