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Clinical implications of the change of cardiac troponin I levels in patients with acute chest pain - An evaluation with respect to the Universal Definition of Myocardial Infarction
Uppsala University, Disciplinary Domain of Medicine and Pharmacy, Faculty of Medicine, Department of Medical Sciences. Uppsala University, Disciplinary Domain of Medicine and Pharmacy, Medicinska och farmaceutiska vetenskapsområdet, centrumbildningar mm, UCR-Uppsala Clinical Research Center.
Uppsala University, Disciplinary Domain of Medicine and Pharmacy, Faculty of Medicine, Department of Medical Sciences, Clinical Chemistry.
Uppsala University, Disciplinary Domain of Medicine and Pharmacy, Faculty of Medicine, Department of Medical Sciences. Uppsala University, Disciplinary Domain of Medicine and Pharmacy, Medicinska och farmaceutiska vetenskapsområdet, centrumbildningar mm, UCR-Uppsala Clinical Research Center.
2011 (English)In: Clinica Chimica Acta, ISSN 0009-8981, E-ISSN 1873-3492, Vol. 412, no 1-2, 91-97 p.Article in journal (Refereed) Published
Abstract [en]

Background: The Universal Definition of Myocardial Infarction incorporates elevated cardiac troponin levels (>99th percentile) together with a significant rise/fall of troponins as biochemical criterion. We sought to evaluate the clinical implications of the relative change of cardiac troponin I (cTnI) levels with respect to the Universal Definition in patients with acute chest pain. Methods: cTnI (Stratus CS) was measured serially in 454 patients within 24 h from admission. Acute myocardial infarction (AMI) was defined using the criteria adapted to the ESC/ACC consensus document, or corresponding to the Universal Definition together with prespecified cTnI changes of >= 20%, >= 50% and >= 100%. Follow-up was completed after 5.8 years. Results: A peak cTnI level above the 99th percentile together with a cTnI change of >= 20% was found in 160 patients of whom 25 did not have AMI according to the ESC/ACC criteria. These 160 patients had a significantly raised mortality (HR 2.5[95% CI 1.7-3.8]). Higher cTnI deltas were not associated with higher mortalities but identified smaller patient cohorts at risk. Conclusions: The Universal Definition of AMI together with a >= 20% cTnI change appears to improve the discrimination of acute from chronic causes of cTnI release, and allows a reliable identification of patients at risk.

Place, publisher, year, edition, pages
2011. Vol. 412, no 1-2, 91-97 p.
Keyword [en]
Chest pain, Myocardial infarction, Diagnostic criteria, Troponin kinetics
National Category
Medical and Health Sciences
Identifiers
URN: urn:nbn:se:uu:diva-144515DOI: 10.1016/j.cca.2010.09.020ISI: 000285655700016PubMedID: 20869357OAI: oai:DiVA.org:uu-144515DiVA: diva2:393720
Available from: 2011-02-01 Created: 2011-01-31 Last updated: 2017-12-11Bibliographically approved

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Eggers, Kai M.Lindahl, Bertil

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