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Combination of B-type natriuretic peptide and peak oxygen consumption improves risk stratification in outpatients with chronic heart failure.

Abstract：

BACKGROUND:Peak oxygen consumption is a cornerstone for prognostic determination in patients with congestive heart failure. The purpose of this study was to assess whether plasma B-type natriuretic peptide (BNP) provided any additional prognostic information. METHODS:Plasma concentrations of atrial natriuretic peptide, N terminal pro-atrial natriuretic peptide, BNP, endothelin-1, norepinephrine, and peak VO2 were measured in 250 consecutive outpatients with mild to moderate heart failure (96% in New York Heart Association [NYHA] class II or III) and left ventricular ejection fraction (LVEF) <45%. RESULTS:During a median follow-up of 584 days, 42 patients died (19 from sudden death) and 5 underwent urgent heart transplantation. Multivariate stepwise regression analysis showed that, among 13 variables including NYHA and LVEF, plasma BNP (chi2 = 11.9, P =.0001) was the strongest independent predictor of death or urgent transplantation, followed by serum sodium (chi2 = 8, P =.0046), resting heart rate (chi2 = 7.5, P =.0062), plasma endothelin-1 (chi2 = 7.2, P =.007), and peak VO2 (chi2 = 6.2, P =.012). Patients with plasma BNP above the upper quartile value (260 pg/mL) had a 1-year rate of death or urgent transplantation of 31%. The 1- and 2-year survival rates without urgent transplantation in patients with a peak VO2 < or =14 mL x kg(-1) x min(-1) were 71% and 59%, respectively, when plasma BNP was >137 pg/mL (median value), compared with 100% and 89%, respectively, when plasma BNP was < or =137 pg/mL (P =.008). Furthermore, plasma BNP was the only independent predictor of sudden death (chi2 = 19.9, P =.00001). CONCLUSIONS:Plasma BNP provides additive independent prognostic information compared to peak VO2 alone in outpatients with mild to moderate heart failure.

journal_name

Am Heart J

journal_title

American heart journal

authors

Isnard R,Pousset F,Chafirovskaïa O,Carayon A,Hulot JS,Thomas D,Komajda M

doi

10.1016/S0002-8703(03)00365-X

subject

Has Abstract

pub_date

2003-10-01 00:00:00

pages

729-35

issue

4

eissn

0002-8703

issn

1097-6744

pii

S000287030300365X

journal_volume

146

pub_type

杂志文章

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