NPPB and chronic kidney disease: In addition, the univariate analysis results of this study found that compared with the non-heart failure group, the number of patients with chronic renal insufficiency was higher, the LVEF was lower, and the levels of NT-proBNP, serum creatinine, fasting blood glucose, blood cholesterol, triglycerides, and low-density lipoprotein cholesterol were higher, with statistically significant differences (all P < 0.05).