NPPB and angina pectoris: In this systematic review, it was found that SBP had potential advantages in improving the incidence of MACE (recurrent angina, myocardial infarction, malignant arrhythmia), LVEF, NT-pro-BNP, inflammatory mediators (IL-6, hs-CRP), and blood lipid index (TC, TG, LDL-C, HDL-C) in patients with CHD after PCI.