第三产程一般5～10分钟，不超过30分钟，由于个别产妇产前做过流产引产或其他原因，胎儿娩出后胎盘15分钟乃至30分钟不下，造成胎盘粘连、滞留，产后大出血，为了缩短第三产程，减少胎盘粘连产后大出血，本文采用生理盐水稀释催产素脐静脉推注、单用生理盐水脐静脉推注以及对照 The third stage of labor generally 5 to 10 minutes, no more than 30 minutes, due to individual maternal prenatal miscarriage induced abortion or other reasons, the fetus after delivery of the placenta for 15 minutes or even 30 minutes, causing placental adhesion, retention, postpartum hemorrhage, in order to shorten the Triple birth process, reduce placental adhesion postpartum hemorrhage, this paper diluted with saline saline oxytocin umbilical vein injection, umbilical vein alone with saline injection and control