ABSTRACT
Objective To investigate the prediction function of preoperative B-type natriuretic peptide in patients to receive on-pump coronary artery bypass grafting with postoperative complications. Methods One hundred and thirty-two patients , including 78 males and 54 females , received on-pump coronary artery bypass grafting from January 2013 to November 2014 and were enrolled in the study. The patients were (63 ± 11.35) years old ( range from 35 to 82 years). The level of BNP was determined before operation, after operation, and on day 1, 2, 3 and 7 post-operation. Relationships were analyzed between BNP and LVEF,ventilation time, length of stay in ICU, the need for inotropic agents or intra-aortic balloon pump (IABP), incidence of postoperative atrial fibrillation, and acute renal failure. Receiver operating characteristic (ROC) curve analysis was also performed to predict the role of BNP in postoperative complications. Result A negative correlation between preoperative BNP level and preoperative LVEF(r = -0.512,P < 0.05) was found. The preoperative BNP level was positively correlated with a series of adverse events. The preoperative BNP was used to predict incidence of postoperative atrial fibrillation , the possibility of using IABP , renal failure , length of stay in ICU exceeding 48h or mortality at 28 days, and the area under the ROC curve (AUC) was 0.780, 0.893, 0.818 and 0.820, respectively. Conclusion The preoperative BNP level is well correlated with the cardiac function before CABG , which may be a good predictor of postoperative complications after CABG.