Objective To detect the value of B-type natriuretic peptide (BNP), white blood count (WBC), Creatinine, TNT and CK-MB in predicting acute myocardial infarction (AMI) mortality in patients aged 80 and over.
Methods Mortality is defined as all-cause death rate during hospitalisation. The discrimination (c statistic) was evaluated.
Results 384 patients presenting with ST segment elevation AMI (STEMI) and non-STEMI were enrolled. The mortality was 23.4%. The overall discriminatory capacity of BNP, WBC, Creatinine, TNT and CK-MB was 0.755 (95%CI: 0.7–0.811), 0.658 (95%CI: 0.593–0.723), 0.647 (95%CI: 0.578–0.716), 0.626 (95%CI: 0.562–0.690) and 0.619 (95%CI: 0.558–0.679), respectively. The discriminatory capacity of the BNP was good.
Conclusions BNP is a useful risk predictor for hospital mortality of AMI patients aged 80 and over.