NPPB and atrial fibrillation: Biomarkers of inflammation (C-reactive protein and fibrinogen)1, myocardial injury (high-sensitivity troponin I)2, renal dysfunction (fibroblast growth factor-23)3, and hemodynamic stress (NT-proBNP [N-terminal pro-B-type natriuretic peptide])4–6 have been reported to be independently associated with prevalent and incident AF.