To systematically evaluate the risk factors of postpartum hemorrhage, the Chinese and English databases were searched by computer system, and the case-control studies on postpartum hemorrhage were found up to March 2022, Meta-analysis was performed with RevMan 5.4 after literature screening and quality evaluation. A total of 34 articles were included, and the statistically significant risk factors were cesarean delivery OR=6.08(3.67-10.08), anterior placenta OR=5.98(4.56-7.84), weak uterine contractions OR=5.41(4.37-6.70), placenta adhesion OR=3.75(2.89-4.86), hypertension during pregnancy OR=2.89(2.09-4.01), multifetal pregnancy OR=2.49(1.99-3.12), history of miscarriage OR=1.90(1.57-2.29) and giant baby OR=1.82(1.64-2.02). Cesarean delivery, anterior placenta, weak uterine contractions, placenta adhesion, hypertension during pregnancy, multifetal pregnancy, history of miscarriage and giant baby are the risk factors of postpartum hemorrhage.

Meixuan Wu, Zelin Hu, Yuanlu Jia, Jia Mei, Haibin Lu, Dianju Qin. Meta-analysis of risk factors for maternal postpartum hemorrhage. International Journal of Frontiers in Medicine (2023), Vol. 5, Issue 6: 52-57. https://doi.org/10.25236/IJFM.2023.050609.

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