产后出血是产科常见的并发症,如延误治疗可危害产妇的健康,重则可致死亡。1992年天津市产后出血病死率为4.12/10万,因此如何准确而简便地评估产后失血量,以期早发现、早诊断、早处理,实为预防产后出血的关键。 1986年以前,国内对产后出血量的定义尚未统一,如王淑贞定为产后24小时出血量≥400ml,柯应夔定为≥500ml,称产后出血。1986年在南宁召开了第三届全国产后出血研讨会,1987年在西安召开第四届全国妇产科学术会议,通过大量资料表明,产时产后2小时(从接生起到胎儿娩出后2小时)累积失血量≥400ml,产时产后24小时(从接生起到胎儿娩出后24小时)累积失血量≥500ml,称产后出血;且产后2小时失血量不论哪种分娩方式均占总出血量的80%,因此作好产时产后2小时监护工作,实为防治产后出血 Postpartum hemorrhage is a common complication of obstetrics, such as delayed treatment can endanger the health of women, can cause deaths. In 1992, the death rate of postpartum hemorrhage in Tianjin was 4.12 / 100,000, so how to accurately and simply assess the amount of postpartum blood loss in order to detect, diagnose and treat early is the key to prevent postpartum hemorrhage. Before 1986, the domestic definition of postpartum hemorrhage has not been uniform, such as Wang Shuzhen set as postpartum hemorrhage 24 hours ≥ 400ml, Ke Ying 夔 set ≥ 500ml, said postpartum hemorrhage. In 1986, the Third National Seminar on Postpartum Hemorrhage was held in Nanning. In 1987, the Fourth National Conference of Obstetrics and Gynecology was held in Xi’an. Through a large amount of data, it was shown that 2 hours after delivery (2 hours after birth to fetus ) Cumulative blood loss ≥ 400ml, intrapartum 24 hours postpartum (from birth to fetus 24 hours after delivery) cumulative blood loss ≥ 500ml, said postpartum hemorrhage; and 2 hours postpartum blood loss regardless of which mode of delivery accounted for the total amount of bleeding 80%, so make good 2 hours postpartum guardianship work, in fact, prevention and treatment of postpartum hemorrhage