CHF patients also had significantly poorer renal function (eGFR Me = 47.8 mL/min, IQR 40.15–66.22 mL/min, vs. Me = 68.43 mL/min, IQR 56.52–81.84 mL/min, p = 0.002) and higher NT-proBNP levels (Me = 1250 pg/mL, IQR 560–2700 pg/mL, vs. Me = 182.5 pg/mL, IQR 102.5–360.5 pg/mL, p < 0.001). Here, NPPB is linked to congestive heart failure.