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급성 심근경색증 환자에서 심근 Troponin T 의 임상적 유용성
최진호(Jin Ho Choi),정우영(Woo Young Chung),이상철(Sang Cheul Lee),송종민(Jong Min Song),김효수(Hyo Soo Kim),김철호(Cheul Ho Kim),손대원(Dae Won Sohn),오병희(Byung Hee Oh),이명묵(Myoung Mook Lee),박영배(Young Bae Park),최윤식(Yun Shi 대한내과학회 1996 대한내과학회지 Vol.50 No.3
Objectives : Cardiac troponin T is an isoform of structurally bound proteins in myocardium. We evaluated cardiac troponin T and other cardiac enzymes as the diagnostic markers of the acute myocardial infarction. Methods: Twenty eight confirmed acute myocardial infarction patients and 12 non-anginal chest pain patients were enrolled. Concentrations of cardiac troponin T, CK, CK-MB and enzymatic activities of CK, LDH and LDH isoenzyme pattern were measured every 6 hours during the first 24 hours and then every 24 hours for 9 days after the onset of chest pain. Results: There were two peaks in the curve of serially measured serum cardiac troponin T(16.4±5.3 hour, 89.1±19.8 hour). Serum cardiac troponin T was elevated in 8 of 9 cases at 6 hours after the onset of chest pain. The sensitivity of cardiac troponin T for detecting acute myocardial infarction was 100% for 12 hours to 144 hours after onset of chest pain. Cardiac troponin T was not detected in all of 12 non-anginal chest pain patients confirmed by coronary angiography and left ventriculogrophy. Both early and late peaks of cardiac troponin T were related to the area under time-curve of cardiac troponin T curve. Conclusion : Compared to CK and CK-MB measurements, cardiac troponin T measurement has a few advantages in the diagnosis of acute myocardial infarction, such as longer time window and estimating infarct size. Therefore, cardiac troponin T appeares to be one of the most useful serum markers for detecting acute myocardial infarction.