N-terminal pro-B-type natriuretic peptide and the risk of stroke among patients hospitalized with acute heart failure: an APEX trial substudy
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Among patients hospitalized with acute heart failure (HF), the prognostic value of N-terminal pro-B-type natriuretic peptide (NT-proBNP) in short-term stroke prediction remains unclear.
In the APEX trial, 7513 patients hospitalized for an acute medical illness were randomized to receive either extended-duration betrixaban (80 mg once daily for 35–42 days) or standard-of-care enoxaparin (40 mg once daily for 10 ± 4 days) for venous thromboprophylaxis. Baseline NT-proBNP concentrations were obtained in 3261 patients admitted for HF. Stroke events were adjudicated by an independent clinical events committee blinded to thromboprophylaxis allocation. The association of NT-proBNP level and other risk factors and biomarkers with stroke was assessed at 77 days after randomization.
In univariate analysis, the risk of stroke at 77 days was associated with baseline NT-proBNP (HR 3.63 [95% CI 1.47–8.99]; P = 0.005), D-dimer (HR 2.73 [95% CI 1.03–7.20]; P = 0.043), and hsCRP (HR 3.03 [95% CI 1.36–6.75]; P = 0.007). In multivariable analysis adjusting for hsCRP and thromboprophylaxis, NT-proBNP was associated with the risk of stroke (adjusted HR 3.64 [95% CI 1.35–9.83]; P = 0.011). The interaction of NT-proBNP with the treatment effect was not significant (Pint = 0.30).
Baseline NT-proBNP concentration was associated with short-term stroke among patients hospitalized with acute HF. Stroke risk assessment models should consider incorporation of NT-proBNP measurement.
KeywordsNatriuretic peptide NT-proBNP Stroke Heart failure Thromboprophylaxis
Acute Medically Ill VTE Prevention with Extended Duration Betrixaban trial
Brain natriuretic peptide
High-sensitivity C-reactive protein
N-terminal pro-B-type natriuretic peptide
Transient ischemic attack
Upper limit of normal
The study was funded by the Portola Pharmaceuticals Inc.
Compliance with ethical standards
Conflict of interest
Dr. Chi has received research grant support paid to the Beth Israel Deaconess Medical Center from Portola, Bayer, and Janssen Research. Dr. Januzzi is supported by the Hutter Family Professorship; has received grant support from Siemens, Singulex, and Prevencio; has received consulting income from Roche Diagnostics, Critical Diagnostics, Sphingotec, Phillips, Novartis, Janssen and Boehringer Ingelheim; and participates in clinical endpoint committees/data safety monitoring boards for Pfizer, Novartis, Amgen, Janssen, and Boehringer Ingelheim. Dr. Korjian has received research grant support paid to the Beth Israel Deaconess Medical Center from Portola, Bayer, and Janssen Research. Dr. Daaboul has received research grant support paid to the Beth Israel Deaconess Medical Center from Portola, Bayer, and Janssen Research. Dr. Goldhaber has provided consulting for Boehringer Ingelheim, Bayer, Portola, Daiichi-Sankyo, Janssen, BiO2 Medical, EKOS/BTG, BMS, and Zafgen. Dr. Hernandez reports receipt of grant support from Amgen, AstraZeneca, Bayer, Bristol-Myers Squibb, GlaxoSmithKline, Luitpold, Merck, and Novartis; and personal fees from Amgen, AstraZeneca, Bayer, Bristol-Myers Squibb, Boston Scientific, Luitpold, and Novartis outside the submitted work. Dr. Hull reports grant support from Portola Pharmaceuticals during the conduct of the study, and grant support and personal fees from Leo Pharma outside the submitted work. Dr. Gold reports personal fees (salary support) from Portola Pharmaceuticals outside the submitted work. Dr. Cohen reports grant support, personal fees, and non-financial support from Portola Pharmaceuticals during the conduct of the study; grant support, personal fees, and non-financial support from Daiichi-Sankyo, Bristol-Myers Squibb, Pfizer, Janssen, and Bayer Pharmaceuticals, personal fees from Boehringer Ingelheim and Sanofi, and personal fees and non-financial support from Johnson & Johnson and Aspen Pharmaceuticals outside the submitted work. Dr. Harrington reports grant support from Portola Pharma during the conduct of the study; grant support from CSL Behring, AstraZeneca, GlaxoSmithKline, Regado, and Sanofi Aventis, grant support and personal fees from Merck and The Medicines Company, personal fees from Amgen, Gilead Sciences, MyoKardia, and WebMD, and other support from Scanadu, SignalPath, Element Science, Vida Health, and Adverse Events outside the submitted work. Dr. Gibson reports research grant support from Portola Pharmaceuticals during the conduct of the study, and grant support from Johnson & Johnson and Bayer outside the submitted work all of which was paid to the Beth Israel Deaconess Medical Center. He has also received modest consulting fees from these same entities in compliance with hospital and Harvard Medical School policies.
All procedures performed in studies involving human participants were in accordance with the ethical standards of the institutional and/or national research committee and with the 1964 Helsinki declaration and its later amendments or comparable ethical standards.
Informed consent was obtained from all individual participants included in the study.
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