晚期产后出血,是指分娩24h后在产褥期内发生的子宫大量出血[1],是产褥期重要并发症之一。随着剖宫产率的逐渐升高,剖宫产术后晚期产后出血也有上升趋势[2],从而也增加了晚期产后出血率及治疗难度。1临床资料我院自2005年1月至2007年12月,足月分娩产妇5100例,自然分娩3779例,剖 Late postpartum hemorrhage, refers to the 24 hours after delivery in the puerperal uterus occurred during a large number of bleeding [1], one of the important complications of puerperal. With the gradual increase in cesarean section rate, postpartum hemorrhage after cesarean section also has an upward trend [2], which also increased the rate of late postpartum hemorrhage and treatment difficulty. 1 clinical data in our hospital from January 2005 to December 2007, full-term delivery of 5100 cases of mothers, 3779 cases of natural childbirth, anatomy