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  • Title: N-Terminal pro B-type natriuretic peptide testing for short-term prognosis in breathless older adults.
    Author: Chenevier-Gobeaux C, Allo JC, Arthaud M, Achkar R, Claessens YE, Ekindjian OG, Riou B, Ray P.
    Journal: Am J Emerg Med; 2008 Jun; 26(5):555-60. PubMed ID: 18534284.
    Abstract:
    BACKGROUND: Amino-terminal pro-brain natriuretic peptide (NT-proBNP) is useful for the triage of patients with dyspnea. Our aim was to determine whether NT-proBNP levels could predict in-hospital outcome in breathless elderly patients. METHODS: At admission, NT-proBNP plasma concentrations were determined in 324 dyspneic patients aged 75 years and older. The association between NT-proBNP values and in-hospital mortality was assessed. RESULTS: Median NT-proBNP concentrations were not different in deceased patients (n = 43, 13%) compared to that of survivors (n = 281, 87%) (4354 vs 2499 pg/mL, respectively; P = .06). To predict in-hospital mortality, the optimum threshold of NT-proBNP was 3855 pg/mL, as defined by the receiver operating characteristic (ROC) curve, with a nonsignificant area under the ROC curve of 0.59. Mortality was significantly higher in patients (n = 139) with NT-proBNP levels 3855 pg/mL or higher (17.9% vs 9.7%, P = .045). After multivariate analysis, NT-proBNP level 3855 pg/mL or higher at admission was predictive of mortality (odds ratio, 2.41; 95% confidence interval, 1.02-5.68; P = .04). CONCLUSION: NT-proBNP higher than 3855 pg/mL is associated with in-hospital mortality in patients aged 75 years and older admitted for dyspnea.
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