The relative utility of cardiac troponin I, creatine kinase-MBmass, and myosin light chain-1 in the long-term risk stratification of patients with chest pain

Graham S Hillis, Pamela Taggart, Delana Wardlaw, Lorraine Hillis, Ning Zhao, William C Dalsey, Antoinette Mangione

Research output: Contribution to journalArticle

5 Citations (Scopus)

Abstract

BACKGROUND: Sensitive and specific cardiac markers convey important short-term prognostic information about patients with an acute coronary syndrome. There are, however, few data assessing their value as long-term predictors.

HYPOTHESIS: The aim of the current study was to assess the relative value of three such markers and clinical characteristics in determining the long-term prognosis of patients with chest pain.

METHODS: Cardiac troponin I (cTnI), myosin light chain-(MLC-1), and creatine kinase-MBmass levels were obtained on admission (0 h) and at 4, 8, 16, and 24 h in 208 patients with chest pain. Eligible subjects were determined, at the time of hospital admission, to be at >7% risk of acute myocardial infarction (MI), but without new ST-segment elevation on their presenting electrocardiogram. Follow-up was performed a median of 28 (range 1-46) months later. The primary study endpoint was death or nonfatal MI, subsequent to the index admission.

RESULTS: Cardiac TnI levels > or = 0.2 ng/ml (odds ratio [OR] 1.93, 95% confidence interval [CI] 1.09-3.40) and MLC-1 levels > or = 1 ng/ml (OR 3.24, 95% CI 1.83-5.73) were both significant predictors of death or MI during long-term follow-up; MLC-1 was, however, the only independent biochemical predictor (OR 2.11,95% CI 1.14-3.93).

CONCLUSIONS: Both cTnl and MLC-1 predict the long-term outcome of patients with chest pain, but, in this cohort, MLC-1 proved to be a better predictor of mortality and nonfatal acute MI.

Original languageEnglish
Pages (from-to)147-52
Number of pages6
JournalClinical Cardiology
Volume26
Issue number3
Publication statusPublished - Mar 2003
Externally publishedYes

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