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1983年1月～1992年12月我科共行剖宫产4731例，出血量≥500ml者374例，出血率7.90％，是同期阴道分娩出血率2.25％（193/8577）的3.5倍。引起剖宫产出血的主要原因有：子宫收缩乏力（235例，62.83％）、前置胎盘（69例，18.45％）、子宫切口撕裂（35例，9.36％）。在374例中，7例因出血无法控制行子宫切除术（1.87％），本组无产妇死亡。结合本组资料，对剖宫产出血的主要原因及其防治进行了讨论。
From January 1983 to December 1992, 4731 cases of cesarean section were co-operated with 374 cases of bleeding≥500ml. The bleeding rate was 7.90%, which was 3.5 times of 2.25% (193/8577) of vaginal delivery in the same period. The main causes of cesarean section bleeding were uterine atony (235 cases, 62.83%), placenta previa (69 cases, 18.45%), and uterine incision (35 cases, 9.36%). In 374 cases, 7 cases were unable to control hysterectomy because of bleeding (1.87%), the group had no maternal death. Combined with this group of data, the main causes of cesarean section and its prevention and treatment were discussed.