NPPB and acute kidney injury: Several variables significantly differed between subjects with versus without the need for dialysis therapy (‘dialysis yes' versus ‘no dialysis'): AKI stage 3 more prevalent in ‘dialysis yes,' duration of in-hospital stay (longer in ‘dialysis yes'), initial and peak creatinine (both higher in ‘dialysis yes'), initial serum potassium (higher in ‘dialysis yes'), initial and maximum NT-proBNP (higher in ‘dialysis yes'), initial CRP (higher in ‘no dialysis'), and coronary artery disease (more prevalent in ‘dialysis yes').