NPPB and congestive heart failure: In CHF patients with reduced ejection fraction (HFREF) (17 patients, 34%) and in those with preserved ejection fraction (HFpEF) (33 patients, 66%) analyzed separately, log (NT-proBNP) exhibited a stronger overall correlation with GLS (HFREF, P < 0.0001, r = 0.8426; HFpEF, P < 0.0001, r = 0.8843) compared with LVEF (HFREF, P = 0.1568, r = -0.3592; HFpEF, P = 0.0502, r = -0.3437).