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目的:调查妊娠糖尿病产妇剖宫产术后大出血发生率及其影响因素。方法:采用便利抽样法，回顾性选取2015年10月—2019年10月在复旦大学附属妇产科医院行剖宫产术的305例妊娠糖尿病产妇病例资料。采用自行设计调查表收集行剖宫产术的妊娠糖尿病产妇的一般资料。采用二项Logistic回归分析妊娠糖尿病产妇剖宫产术后大出血的影响因素。结果:305例行剖宫产术的妊娠糖尿病患者中，有30例发生产后大出血，发生率为9.84%，出血量为（1 635.02±235.74）ml。二项Logistic回归分析显示，孕前BMI、瘢痕子宫、胎盘异常、凝血功能障碍、宫缩乏力是妊娠糖尿病产妇剖宫产术后大出血的影响因素（n P<0.05）。n 结论:妊娠糖尿病产妇剖宫产术后大出血的发生率较高，孕前BMI、瘢痕子宫、胎盘异常、凝血功能障碍、宫缩乏力是妊娠糖尿病产妇剖宫产术后大出血的影响因素。“,”Objective:To explore the incidence of hemorrhage after cesarean section in puerpera with gestational diabetes and its influencing factors.Methods:From October 2015 to October 2019, the convenience sampling method was used to retrospectively select the case data of 305 puerpera with gestational diabetes who underwent cesarean section in the Obstetrics and Gynecology Hospital of Fudan University. The self-designed questionnaire was adopted to collect general data of gestational diabetic puerpera undergoing cesarean section. Binomial Logistic regression was used to analyze the influencing factors of hemorrhage after cesarean section in puerpera with gestational diabetes.Results:Among 305 puerpera with gestational diabetes who underwent cesarean section, 30 had postpartum hemorrhage, the incidence was 9.84%, and the amount of bleeding was (1 635.02±235.74) ml. Binary Logistic regression analysis showed that pre-pregnancy body mass index (BMI) , scarred uterus, abnormal placenta, blood coagulation dysfunction, and uterine inertia were the influencing factors of hemorrhage after cesarean section in puerpera with gestational diabetes with a statistical difference (n P<0.05) .n Conclusions:The incidence of hemorrhage after cesarean section in puerpera with diabetes is high. Pre-pregnancy BMI, scarred uterus, abnormal placenta, blood coagulation dysfunction, and uterine inertia are the influencing factors of hemorrhage after cesarean section in gestational diabetic puerpera.