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目的探讨心肌肌钙蛋白Ⅰ(cTnⅠ)、肌红蛋白(Mb)在急性心肌梗塞(AMI)早期诊断中的意义。方法选择78例胸痛疑似急性心肌梗塞患者的血液标本,进行cTnⅠ和Mb的测定。结果在确诊的62例AMI早期诊断中,cTnⅠ阳性出现滞后,3h内测定的阳性率为16.1%,显著低于Mb的阳性率(72.4%),24h内测定cTnⅠ的阳性率为100%。结论在AMI的早期检测cTnⅠ与Mb,对AMI的早期诊断非常必要,可起到相辅相成的作用。
Objective To investigate the significance of cardiac troponin Ⅰ and myoglobin in the early diagnosis of acute myocardial infarction (AMI). Methods Blood samples were collected from 78 patients with chest pain suspected acute myocardial infarction and cTnI and Mb were measured. Results In the early diagnosis of 62 cases of AMI, cTn Ⅰ positivity was delayed. The positive rate of cTn Ⅰ was 16.1% in 3 h, which was significantly lower than that of Mb (72.4%). The positive rate of cTn Ⅰ was 100% in 24 h. Conclusion Early detection of cTnI and Mb in AMI is necessary for the early diagnosis of AMI, which can play a complementary role.