Abstract: Objective To explore the value of B-type natriuretic peptide (BNP) predicting cardiac events after noncardiac surgery in the aged patients. Methods The level of BNP， the score of Goldman analysis and the cardiac risk grade of ACC/AHA guideline were analyzed in 274 aged patients for cardiac outcome after noncardiac surgery. Results Preoperative BNP concentration>100 pg/ml，score of Goldman≥13，and the high or moderate risk grade by ACC/AHA guideline were related with cardiac events. There was no significant difference in the index such as sensitivity，specificity, accuracy，positive predictive value and negative predictive value for cardiac events between BNP level and cardiac risk grade. Compared with the score of Goldman, BNP was more sensitive （100% vs 55.6%）and negatively predictive （100% vs 96.3%） for cardiac events. Conclusion The risk of cardiac events after noncardiac surgery could be predicted with the level of BNP before operation in the aged patient.

Key words: B-type natriuretic peptide (BNP), aged, noncardiac surgery, cardiac events