NPPB and atrial fibrillation: Additionally, adirect correlation was observed between NT-proBNP levels and mortality rates, aswell as other adverse outcomes, including prolonged ICU stay, AKI, low cardiacoutput (LCO), new-onset AF, prolonged MV, cerebrovascular events, prolongedhospitalization, emergency reoperation, postoperative HF, and postoperativedelirium.