A short cut review was carried out to establish whether brain natriuretic peptide (BNP) can be used as a marker for acute coronary syndromes. 685 citations were found, of which eight presented the best evidence to answer the clinical question. The author, date and country of publication, patient group studied, study type, relevant outcomes, results and study weaknesses of these best papers are tabulated. The clinical bottom line is that BNP shows promise as an early cardiac marker and may enhance prognostic stratification. NPV and PPV may be unacceptably low to enable use as a sole cardiac marker. Incorporation into a multimarker strategy and serial estimations may be necessary.
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