标题:Detection of myocardial damage by serial measurements of cardiac troponin T, CK MBmass, and TROPT rapid test
作者:Gerhardt WLjungdahl L
网址:PMID: 9211015
求助者:dudu
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求助时间:2015/6/26 10:06:01
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求助状态:AB图书馆客服已找到全文,详情咨询在线客服qq 1257749646
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文献摘要:
Detection of cardiac damage is greatly facilitated by serial blood measurements of myocardial cell markers. In many hospitals creatine kinase MBmass concentration (CK MBmass) constitutes the biochemical criterion (WHO) for acute myocardial infarction (AMI). Cardiac troponin T (TnT) is an even more sensitive and specific marker for myocardial damage. With discriminator levels of 10.0 and 0.10 micrograms/l, respectively, serial measurements of both markers provide a useful diagnostic strategy for ischemic heart disease. This survey reviews representative cumulated time curves in individual patients covering the spectrum of myocardial damage, including unstable angina pectoris (UAP), non-Q-wave and Q-wave infarctions with and without early reperfusion, re-infarction, and subacute infarction. Increased TnT detects minor myocardial damage (MMD) in over 30% of patients with UAP, although CK MBmass remains below its discriminator. Subacute infarction is detected by the wide diagnostic time window of the serum TnT at a time when CK MBmass has already returned to normal. In a substudy of 502 suspected cases of AMI, the distributions of maximum serum TnT concentrations within each patient series demonstrated that TnT had a diagnostic sensitivity of 100% and a specificity of 99%. Median, 5th and 95th percentiles of maximum TnT values within the diagnostic subgroups showed that serum TnT was increased five-fold more than CK MBmass. Median values of Q-wave AMI were higher than in non-Q-wave AMI. A diagnostic strategy using TROPT, a rapid test specific for the cardiac isoform of TnT with a detection limit 0.10 microgram/l, is presented.
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