剖宫产术中大出血是产科严重的并发症,病情危急,如果处理不当可造成严重后果甚至危急产妇生命,所以必须对其出血原因进行分析,迅速采取相应有效的止血方法。1子宫收缩乏力1·1常见诱因子宫收缩乏力是术中出血的首要原因,常发生于产程延长、巨大儿、双胎、羊水过少等。1·2处理 Major bleeding in cesarean section is a serious complication of obstetrics, critical illness, if not properly handled can cause serious consequences and even critical maternal life, it is necessary to analyze the causes of bleeding, promptly take the appropriate and effective hemostasis. 1 uterine atony 1.1 common inducement Uterine atony is the primary cause of intraoperative bleeding, often occurs in labor prolongation, huge children, twins, oligohydramnios and so on. 1.2 Processing