NPPB and atrial fibrillation: In the Fushimi AF registry, elevated levels of B‐type natriuretic peptide (BNP) or NT‐proBNP (above median levels of ≥169.4 pg/mL or ≥1,457 pg/mL, respectively) were associated with an increased risk of stroke/systemic embolism (HR 1.97, P=0.03).385