• Wen-Wei Hsu, Han-Ying Chen, Shin-Yu Lin, Yi-Yun Tai, Jessica Kang, Ming-Wei Lin, and Chien-Nan Lee.
• Department of Obstetrics and Gynecology, National Taiwan University Hospital, Yunlin Branch, Yunlin, Taiwan.
• J Formos Med Assoc. 2021 Aug 1; 120 (8): 1635-1641.

PurposeTo evaluate the effectiveness of adding carbetocin to regular uterotonic agents for prevention of postpartum hemorrhage (PPH) after cesarean section for twin pregnancies.MethodsThis is a retrospective uncontrolled before-after study done in a tertiary center in Taiwan, 2010-2017. Women with twin pregnancies that underwent cesarean section were enrolled. The control group (n = 114) received oxytocin infusion and direct uterine injection. In addition to these, the study group (n = 127) received 100ug of intravenous carbetocin. Primary endpoint was the change in hemoglobin. Secondary endpoints included risk of PPH and undiagnosed PPH (Hb dropped more than 2 g/dL), blood loss, the need for additional uterotonic maneuvers, and blood transfusion. Hemodynamic changes were also investigated.ResultsAfter adjusting for confounding factors, the change in Hb (0.35 g/dL, 95% CI: -0.03∼0.74) and incidence of PPH (OR 0.30, 95% CI: 0.03∼3.28) were comparable in both groups. However, women with undiagnosed PPH decreased (OR 0.43, 95% CI:0.22∼0.85). Total blood loss in 24 h after delivery also decreased (-40.33 mL, 95%CI: -80.32∼ -0.34). The use of extra uterotonic medications and the need for blood transfusion did not differ. The systolic blood pressure 4 h after childbirth was higher in the carbetocin group (6.71, 95% CI: 2.27∼11.15).ConclusionThe use of carbetocin in addition to regular uterotonic agents decreased total blood loss and undiagnosed PPH. Also, systolic blood pressure 4 h after childbirth is higher in the carbetocin group. There was no significant difference in hemoglobin change and risk of PPH.Copyright © 2021. Published by Elsevier B.V.

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