我省地处海拔2251m高原地区,因缺O_2致孕妇血中氧分压减低,产妇在分娩时第三产程延长,出血量增多,许多学者推出将第三产程由原来的30min缩短为10min以内。通过缩短第三产程防治宫缩乏力,减少产后失血量。近年我科采用前臂及手背静脉推注催产素,不仅能使产妇第三产程时间缩短在10min内,而且产后失血量明显减少,打破了以往臀部肌注催产素的常规。 1.临床资料 The province is located at an altitude of 2251m plateau area, due to lack of O_2 in pregnant women to reduce blood oxygen partial pressure, the third trimester of labor during childbirth extension, increased bleeding, many scholars introduced the third stage of labor from the original 30min reduced to 10min. By shortening the third stage of labor to prevent uterine atony, reduce postpartum blood loss. In recent years, our department using forearm and hand vein intravenous oxytocin, not only can reduce the time of the third stage of maternal within 10min, and postpartum blood loss was significantly reduced, breaking the past buttocks intramuscular oxytocin routine. 1. Clinical data