NT-proBNP for Risk Assessment in Patients With Atrial Fibrillation: Insights From the ARISTOTLE Trial

Study Questions:

What is the prognostic value of N-terminal pro-B-type natriuretic peptide (NT-proBNP) in patients with atrial fibrillation (AF) in the ARISTOTLE (Apixaban for the Prevention of Stroke in Subjects With Atrial Fibrillation) trial, and what is the treatment effect of apixaban according to NT-proBNP levels?