Evaluation and analysis on risk factors of postpartum hemorrhage

Objective:To analyze the incidence,risk factors and preventive treatment of postpartum hemorrhage(PPH) for providing the clinical data in improving the prevention measures of PPH.Methods:The data of pregnant women from January to December 2002,from September 2007 to May 2008 and from January to December 2012 were retrospectively analyzed.The 300 cases(group A),596 cases(group B) and 598 cases(group C) from three corresponding time period were selected by systematic random sampling.The incidence of PPH and severe PPH(SPPH),hemoglobin(Hb) before and after delivery,risk factors of PPH,drug and hemostasis between three groups were analyzed.Results:The differences of the incidence of PPH and SPPH between the patients with vaginal delivery and cesarean delivery were not statistically significant(P>0.05).The incidence of PPH in patients with cesarean delivery in group B was higher than that in patients with vaginal delivery(PP>0.05).The amount of bleeding in 3 groups with cesarean delivery was higher than that in vaginal delivery(PPPPPConclusions:The amount of bleeding estimated by traditional method is low,the effective and timely method should be used to estimate the amount of bleeding.The trend of placenta previa and macrosomia can lead to the SPPH.Reducing the unreasonable cesarean section and inproving health care during pregnancy can help to reduce the PPH.