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Hunan Yi Ke Da Xue Xue Bao. 1998;23(6):563-5.

[Clinical evaluation of cardiac troponin I in ischemic heart diseases].

[Article in Chinese]

Author information

  • 1Emergency Department, Second Affiliated Hospital, Hunan Medical University, Changsha.


The detection of cardiac troponin I(cTnI), including serum or plasma, was evaluated in 114 patients with ischemic heart diseases or other heart diseases. The results were that the sensitivity of cTnI detection(qualitative analysis, cutoff is 0.2 was higher than that of creatine kinase(CK), creatine kinase-MB(CK-MB), alpha-hydroxybutyrate dehydrogenase(alpha-HBD), lactic dehydrogenase(LDH), and aspartic transaminase(AST) for diagnosing acute myocardial infarction (AMI) (93.2% vs 68.2%, 68.2%, 65.9%, 65.9%, and 75.0%; P < 0.05; respectively). The specificity of cTnI detection was higher than that of alpha-HBD, LDH, and AST(95.2% vs 81.0%, 73.8%, and 54.0%; P < 0.05; respectively) and similar to CK and CK-MB(95.2% vs 83.3% and 83.3%; P > 0.05; respectively). On the other hand, the sensitivity of cTnI in patients with unstable angina pectoris was 45.5%. It was higher than stable angina pectoris and lower than AMI. The results suggest that the cardiac troponin I is a better cardiac injury marker than other cardiac markers for diagnosing AMI.

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