NPPB and acute myocardial infarction: Previous research findings are also similar with the results of this study, that is, LVEF < 45% and NT-proBNP ≥ 1,800 ng/L at admission are independent risk factors for heart failure after percutaneous coronary intervention (PCI) in patients with acute myocardial infarction (AMI) (Chenglong et al., 2022).