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Abstract To analyze the failure causes of hemostasis by B-Lynch suture during cesarean section, so as to further reduce postpartum hemorrhage after cesarean section. Methods: 112 women who underwent B-Lynch suture as the first surgical hemostatic method because of uterine inertia during cesarean section from January 2016 to January 2021 were selected as the research object. The hemostatic effect of B-Lynch suture was evaluated, and the causes of hemostatic failure and its countermeasures were analyzed. Results: The main reasons of the hemostasis failure by B-Lynch suture were incomplete hemostasis in lower uterine segment and placental site, large uterine volume, inadequate compression due to uterine thick muscle wall, and intraoperative bleeding rapidly, etc. The proportions of abortion history, scar uterus, and abnormal placenta of the women with failed hemostasis (16 cases) was significantly higher than that of the women (96 cases) with successful hemostasis (P＜0.05). Abnormal placenta was an independent risk factor affecting hemostasis effectiveness (OR=13.626, 95%CI 3.829-48.496). Conclusion: B-Lynch suture used for hemostasis of the women during cesarean section has its limitations, so it is necessary to select the surgical hemostasis method reasonably. Abortion history, scar uterus, and placental abnormalities are the high-risk factors of B-Lynch suture hemostasis failure.
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