摘要Pressure ulcers(Pus)are a common complication of surgery.Despite Pus causing a heavy eco-nomic burden and diminishing patients'quality of life,their risk factors have not been thoroughly investigated.We aimed to find risk factors for Pus in adult cardiac surgery patients with cardiopulmonary bypass(CPB).Methods:Demographic,laboratory,and surgical data,the score of pressure ulcer(PU)risk tool-Braden Scale of 2307 adult pa-tients who underwent cardiac surgery with cardiopulmonary bypass(CPB)between January 2019 and September 2019 were obtained.The postoperative PU incidence rates were analyzed using binary logistic regression analysis.Receiver operating characteristic curves(ROC)and the areas under the curves(AUC)were calculated to assess the predictive accuracy of PU risk.Results:Of the 2307 patients in this study,176 developed Pus after surgery,PU in-cidence rate was 7.6％.Univariate analysis showed that sex,emergency status,surgery type,surgery classification,and skin problems before surgery were risk factors for postoperative Pus.In multivariate analysis,emergency sur-gery,hemoglobin,hematocrit,pro-brain natriuretic peptide(pro-BNP),surgery classification,and skin problems be-fore surgery were risk factors for postoperative Pus.Conclusions:Our findings suggest that emergency surgery,he-moglobin,hematocrit,pro-BNP,surgery classification,and skin problems before surgery are risk factors for Pus in adult cardiac surgery patients with CPB.The widely used Braden Scale is unsuitable for predicting Pus in such pa-tients.