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Meta-analysis of ischemia-modified albumin to rule out acute coronary syndromes in the emergency department.

American Heart Journal

Syndrome, Serum Albumin, Sensitivity and Specificity, Risk Assessment, Predictive Value of Tests, diagnosis, Myocardial Infarction, Humans, Emergency Service, Hospital, Electrocardiography, analysis, Creatine Kinase, MB Form, blood, Biological Markers, Angina, Unstable

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      Abstract

      Because of possible adverse outcomes, many of the >6 million annual emergency department (ED) patients with suspected acute coronary syndromes (ACS) undergo extensive evaluations. To minimize medical errors, chest pain evaluations are structured to identify accurately nearly 100% of patients with ACS. This is at a cost of negative evaluation rates that can exceed 90%. Ischemia-modified albumin (IMA), a serum biomarker with a high negative predictive value (NPV) at ED presentation, may exclude ACS. Our objective was to perform a meta-analysis of IMA use for ACS risk stratification. By computer literature search and communication with authors of unpublished information, all IMA data were considered. This analysis included studies if they reported IMA results from an ED presentation for suspected ACS. We defined a negative triple prediction test (TPT) as a nondiagnostic electrocardiogram, negative troponin, and negative IMA. Eight studies of >1800 patients met the entry criteria. The TPT sensitivity and NPV for acute ACS were 94.4% and 97.1% and, for longer-term outcomes, were 89.2% and 94.5%, respectively. A negative TPT of a nondiagnostic electrocardiogram, negative troponin, and negative IMA has a high NPV for excluding ACS in the ED.

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      Journal
      10.1016/j.ahj.2005.12.024
      16875905

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