title: Evaluation of serum troponin T measurement in acute myocardial infarction.
abstract: The release kinetics of the cardiac specific troponin T (cTnT), measured by an immunosorbent assay, in 32 patients with acute myocardial infarction (AMI) was evaluated. In 8 AMI patients (25%), the release kinetics of serum cTnT showed biphasic serum concentration curves with a large peak at 10 to 18 hours after onset and the serum cTnT concentrations were up to 30 to 120 times of the normal upper limit-detected (0.2 microgram/ml), and another samll cTnT peak at 70 to 100 hours after onset of pain. The serum cTnT measurements in the remaining 24 AMI patients (75%) gave only one large peak which was around 32 to 108 hours after onset of pain. cTnT appeared in serum as early as 3 to 4 hours and remained elevated until 240 hours after the infarctions. The results indicated that (1) cTnT was a sensitive and specific marker of AMI; (2) the biphasic curve of cTnT releae in general, the ratio of cTnT at around 14 to 32 (14/32) > 1 in particular, may be a useful marker suggesting early reperfusion; (3) the continuous elevation of serum cTnT in AMI course might be a prognostic indicator for unfavorable outcomes.
authors.affiliation: Department of Internal Medicine, College of Medicine, University of Qingdao.
authors.forename: H
authors.initials: H
authors.lastname: Yu
authors.forename: W
authors.initials: W
authors.lastname: Zhao
authors.forename: H
authors.initials: H
authors.lastname: Fan
authors.forename: Q
authors.initials: Q
authors.lastname: Xu
authors.forename: Z
authors.initials: Z
authors.lastname: Miao
mesh_terms: D000368:Aged; D015415:Biomarkers / Q000097:blood; D005260:Female; D006801:Humans; D007163:Immunosorbent Techniques; D008297:Male; D008875:Middle Aged; D009203:Myocardial Infarction / Q000097:blood*; D011379:Prognosis; D014336:Troponin / Q000097:blood*; D020107:Troponin T
chemical_list: D015415:Biomarkers; D014336:Troponin; D020107:Troponin T