NPPB and Renal insufficiency: NT‐proBNP is less affected by ARNI than BNP, so this study chose NT‐proBNP as the laboratory index to evaluate cardiac function, but the only way for NT‐proBNP clearance is glomerular filtration, and renal insufficiency has a great impact on it, so it is necessary to dynamically evaluate NT‐proBNP level changes.22, 23