The risk factors of postpartum hemorrhage in pregnant women with vaginal delivery

Objectives: To analyze the risk factors of postpartum hemorrhage in pregnant women with vaginal delivery. Methods: 50 pregnant women of vaginal delivery with postpartum hemorrhage were selected as study group and 100 pregnant women of vaginal delivery without postpartum hemorrhage were selected as control group.The medical history and the related information were recorded in detail. Results: The number of patients whose age≥35,fetal times≥2,or had placental retention,placental abruption and placenta conglutination,weakness of contractions,gestational hypertension,multipara,soft birth canal injury,moderately severe anemia,abnormal gestation in the study group were 27(54. 0%),26(52. 0%),30(60. 0%),7(14. 0%),26(52. 0%),27(54. 0%),26(52. 0%),30(60. 0%),26(52. 0%),30(60. 0%),30(60. 0%),respectively. Which in control group were17(17. 0%),25(25. 0%),28(28. 0%),7(7. 0%),25(25. 0%),17(17. 0%),25(25. 0%),40(40. 0%),28(28. 0%),40(40. 0%),40(40. 0%). The differences between the two groups were statistically significant( P 0. 05). Further multi- factor analysis showed that cesarean section,placental retention,placenta conglutination,weakness of contractions and soft birth canal injury were independent risk factors in pregnant women with postpartum hemorrhage. Conclusions: Postpartum hemorrhage in pregnant women of vaginal delivery is related with cesarean section,placental retention,placenta conglutination,weakness of contractions and soft birth canal injury. Intervention measures may reduce the occurrence of postpartum hemorrhage.