BDNF and congestive heart failure: The Kaplan–Meier analysis unveiled that patients in the miR-182-5p low expression group had a higher survival rate than miR-182-5p high expression group, and the BDNF high expression group had an elevated survival rate relative to the BDNF low expression (all P < 0.05) (Fig. 5), demonstrating that miR-182-5p high expression and BDNF low expression predicted poor prognosis in CHF.