NT-proBNP for Risk Prediction in Heart Failure: Identification of Optimal Cutoffs Across Body Mass Index Categories

Giuseppe Vergaro, Francesco Gentile, Laura M G Meems, Alberto Aimo, James L Januzzi, A Mark Richards, Carolyn S P Lam, Roberto Latini, Lidia Staszewsky, Inder S Anand, Jay N Cohn, Thor Ueland, Lars Gullestad, Pål Aukrust, Hans-Peter Brunner-La Rocca, Antoni Bayes-Genis, Josep Lupón, Akiomi Yoshihisa, Yasuchika Takeishi, Michael EgstrupIda Gustafsson, Hanna K Gaggin, Kai M Eggers, Kurt Huber, Greg D Gamble, Lieng H Ling, Kui Tong Gerard Leong, Poh Shuah Daniel Yeo, Hean Yee Ong, Fazlur Jaufeerally, Tze P Ng, Richard Troughton, Robert N Doughty, Gerry Devlin, Mayanna Lund, Alberto Giannoni, Claudio Passino, Rudolf A de Boer, Michele Emdin

52 Citationer (Scopus)

Abstract

OBJECTIVES: The goal of this study was to assess the predictive power of N-terminal pro-B-type natriuretic peptide (NT-proBNP) and the decision cutoffs in heart failure (HF) across body mass index (BMI) categories.

BACKGROUND: Concentrations of NT-proBNP predict outcome in HF. Although the influence of BMI to reduce levels of NT-proBNP is known, the impact of obesity on prognostic value remains uncertain.

METHODS: Individual data from the BIOS (Biomarkers In Heart Failure Outpatient Study) consortium were analyzed. Patients with stable HF were classified as underweight (BMI <18.5 kg/m2), normal weight (BMI 18.5-24.9 kg/m2), overweight (BMI 25-29.9 kg/m2), and mildly (BMI 30-34.9 kg/m2), moderately (BMI 35-39.9 kg/m2), or severely (BMI ≥40 kg/m2) obese. The prognostic role of NT-proBNP was tested for the endpoints of all-cause and cardiac death.

RESULTS: The study population included 12,763 patients (mean age 66 ± 12 years; 25% women; mean left ventricular ejection fraction 33% ± 13%). Most patients were overweight (n = 5,176), followed by normal weight (n = 4,299), mildly obese (n = 2,157), moderately obese (n = 612), severely obese (n = 314), and underweight (n = 205). NT-proBNP inversely correlated with BMI (β = -0.174 for 1 kg/m2; P < 0.001). Adding NT-proBNP to clinical models improved risk prediction across BMI categories, with the exception of severely obese patients. The best cutoffs of NT-proBNP for 5-year all-cause death prediction were lower as BMI increased (3,785 ng/L, 2,193 ng/L, 1,554 ng/L, 1,045 ng/L, 755 ng/L, and 879 ng/L, for underweight, normal weight, overweight, and mildly, moderately, and severely obese patients, respectively) and were higher in women than in men.

CONCLUSIONS: NT-proBNP maintains its independent prognostic value up to 40 kg/m2 BMI, and lower optimal risk-prediction cutoffs are observed in overweight and obese patients.

OriginalsprogEngelsk
TidsskriftJACC. Heart failure
Vol/bind9
Udgave nummer9
Sider (fra-til)653-663
Antal sider11
ISSN2213-1779
DOI
StatusUdgivet - sep. 2021

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