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  • Title: Optimal diagnosis in acute myocardial infarction. A cost-effectiveness study.
    Author: Grande P, Christiansen C, Pedersen A, Christensen MS.
    Journal: Circulation; 1980 Apr; 61(4):723-8. PubMed ID: 6766824.
    Abstract:
    The predictive value of a diagnostic test estimates the likelihood for presence or absence of disease in a patient with a positive or negative test result (PVpos or PVneg). We evaluated the predictive values of serum activities of the heart-specific creatine kinase isoenzyme MB (CK-MB), aspartate aminotransferase, lactate dehydrogenase, CK, and ECG in 401 consecutively admitted patients suspected of acute myocardial infarction (AMI). The study showed that CK-MB (PVpos = 0.98, PVneg = 1.00) was better than the other enzymes (single as well as serial) and ECG, evaluated both separately and in combinations. In all cases of AMI CK-MB was positive within 17 hours from admission. Replacement of the standard enzymes with CK-MB provides a faster and safer diagnosis of AMI and reduces hospitalization time considerably for patients without AMI.
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