Clinical Study of Risk Factors of Postpartum Hemorrhage in 345 Cases of Low-lying Placenta / 实用妇产科杂志

ABSTRACT

Objective:To analyse the risk factors of postpartum hemorrhage in vaginal delivery patients with low-lying placenta.Methods:We retrospectively evaluated the data from January 2014 to December 2015 of 345 cases of vaginal delivery pregnant women with low-lying placenta.According to postpartum hemorrhage,the data were divided into two groups:single factor analysis and multivariate logister regression analysis were used to assess the risk factors.Results:Postpartum hemorrhage in 47 cases,the total rate is 13.6％.Univariate analysis showed that assisted reproductive conception,history of prenatal hemorrhage,placenta from the cervix within the distance ≤ 10 mm,placental adhesions were more prone to postpartum hemorrhage(P ＜ 0.05).Logistic multivariate regression analysis showed that assisted reproductive conception (OR =8.181,95％ CI 3.072-21.791) and placental adhesions(OR=6.543,95％ CI 3.107-13.775) were independent risk factors for postpartum hemorrhage.Conclusions:Systematic prenatal care,carefully transvaginal ultrasound examination before labor and evaluation of these risk factors,may be able to provide a better choice of mode of delivery to low-lying placenta patients and predict postpartum hemorrhage risk,thereby reducing its postpartum hemorrhage rate.