产后大出血是引起产妇死亡的重要原因之一,是产科常见而又严重的并发症。产后出血的发病率一般是1—5%。1975年天津医学院等报道产后出血发病率为1—2%。风心病的产妇产后出血的发生率比一般产妇为高。北医为7.2%,协和为9.2%,我院为8.3%。特别是心功不良代偿失调的病人产后出血发生的机会更多,对病人生命威胁甚大。其原因与下列因素有关:1.心功能不良,组织乏氧,子宫肌收缩功 Postpartum hemorrhage is one of the important causes of maternal death, a common and serious complication of obstetrics. The incidence of postpartum hemorrhage is generally 1-5%. Tianjin Medical College in 1975 reported the incidence of postpartum hemorrhage was 1-2%. Convalescent maternal postpartum hemorrhage rate is higher than the average maternal. 7.2% for Beiyi, 9.2% for Concord, and 8.3% for our hospital. In particular, patients with decompensated heart malnutrition, postpartum hemorrhage opportunities are more, a great threat to the lives of patients. The reasons for the following factors: 1. Heart failure, tissue hypoxia, uterine muscle contraction