In unadjusted analyses, neither MR-proANP nor NT-proBNP were significantly associated with AF recurrence [MR-proANP: OR = 1.06 (0.99–1.14), per 10% increase; NT-proBNP: OR = 1.01 (0.98–1.05), per 10% increase]. Here, NPPB is linked to atrial fibrillation.