产后出血是指胎儿娩出24 h内产妇阴道出血量超过500 ml[1]。产后出血是产妇常见并发症之一,国内报道其发生率约为1%~2%,也是导致产妇死亡的四大原因之一。因此,了解产后出血的原因,及时采取有效对策,对提高产科医疗质量有重要意义。本文通过对我院2004年10月至2005年9月发生的3 Postpartum hemorrhage refers to the fetus vaginal bleeding within 24 hours of delivery of more than 500 ml [1]. Postpartum hemorrhage is one of the common maternal complications, the incidence of about 1% to 2% of the domestic coverage, but also one of the four major causes of maternal death. Therefore, to understand the cause of postpartum hemorrhage, timely and effective measures to improve the quality of obstetric care is of great significance. This article passed to our hospital from October 2004 to September 2005 occurred 3