Objective To investigate the characteristics and risk factors of infection after liver transplantation from donor liver of donation after citizen's death. Methods Clinical data of 68 recipients after liver transplantation from donor liver of donation after citizen's death were analyzed retrospectively. The recipients were divided into infection group (33 cases) and non-infection group (35 cases) according to the presence of infection after operation. Major infection characteristics of the 68 recipients after liver transplantation were summarized. Univariate analysis was conducted on the possible risk factors of infection after liver transplantation, and multivariate analysis was further conducted on the risk factors with statistical significance, so as to find out the independent risk factors. In addition, accuracy of predicting infection after liver transplantation was analyzed using receiver operating characteristic (ROC) curves. Results Thirty-three recipients were infected after liver transplantation, accounting for 49% of the total recipients with bacterial infection and fungal infection mainly. These recipients mainly presented pulmonary infection and abdominal cavity infection. Univariate analysis results showed that a total of 8 factors contributed to infection after liver transplantation from donor liver of organ donation, including the donors' open injury, recipients' preoperative hemoglobin level, platelet count, Child-Pugh classification of liver function, model for end-stage liver disease (MELD) score, intraoperative erythrocyte infusion, gamma-glutamyl transpeptidase (GGT) on day 1 after operation and postoperative stay time of intensive care unit (ICU) (all P<0.05). Multivariate Logistic regression results analysis showed that preoperative hemoglobin level <120 g/L and postoperative stay time of ICU >96 h were the independent risk factors of infection after liver transplantation from donor liver of organ donation (both P<0.05). Analysis results of ROC curves showed that preoperative hemoglobin level<114 g/L and postoperative stay time of ICU >102 h resulted in higher accuracy for predicting postoperative infection. Conclusions Infection after liver transplantation from donation after citizen's death presents high incidence, dominated by bacterial infection and fungal infection in lung and abdominal cavity. Low preoperative hemoglobin level and long postoperative stay time of ICU of recipients can increase the risk of infection after liver transplantation.%目的 探讨公民逝世后器官捐献供肝肝移植受体术后感染特点及感染相关危险因素.方法 回顾性分析接受公民逝世后器官捐献供肝肝移植68例受体的临床资料.根据受体术后是否合并感染分为感染组(33例)和非感染组(35例).总结68例肝移植受体术后感染的主要特点;对受体发生肝移植术后感染的可能危险因素进行单因素分析;有统计学意义的危险因素再进行多因素分析,找出独立危险因素,并采用受试者工作特征(ROC)曲线分析其预测肝移植术后感染的准确度.结果 肝移植术后33例受体发生感染,占总数的49%,以细菌感染和真菌感染为主,感染部位主要有肺部感染和腹腔感染.单因素分析发现,供体存在开放性损伤,受体术前血红蛋白水平、血小板计数、肝功能Child-Pugh分级、终末期肝病模型(MELD)评分,术中红细胞输注量,术后第1日γ-谷氨酰转肽酶(GGT)、重症监护室(ICU)停留时间共8个因素是器官捐献供肝肝移植术后感染的相关因素(均为P<0.05).多因素Logistic回归分析结果显示术前血红蛋白水平<120 g/L和术后ICU停留时间>96 h为器官捐献供肝肝移植术后感染的独立危险因素(均为P<0.05).ROC曲线分析显示,术前血红蛋白水平<114 g/L和术后ICU停留时间>102 h对预测术后感染准确度较高.结论 公民逝世后器官捐献供肝肝移植术后感染发生率较高,以细菌感染和真菌感染为主,感染部位主要在肺部和腹腔.受体肝移植术前血红蛋白水平低及术后ICU停留时间长,会增加肝移植术后感染风险.
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