Fig. 4

90-day survival analysis of different groups of AHF patients (a) Kaplan-Meier survival curve of 90-day mortality in AHF patients with different BMI subgroups in High-PNI group (b) Kaplan-Meier survival curve of 90-day mortality in AHF patients with different BMI subgroups in Low-PNI group (c) The Cox regression analysis of 90-day mortality for AHF patients with different BMI subgroups in High-PNI group (d) The Cox regression analysis of 90-day mortality for AHF patients with different BMI subgroups in Low-PNI group. AHF, acute heart failure; BMI, body mass index; HR, heart rate; WBC, white blood cell count; HB, Hemoglobin; NT-proBNP, N-terminal probrain natriuretic peptide; SOFA, sequential organ failure assessment; CRRT, continuous renal replacement therapy; HR, Hazard ratio; CI, Confidence interval