Mode of Delivery in Monochorionic compared with Dichorionic
The study compares the mode of delivery between monochorionic and dichorionic twin pregnancies.

This was a retrospective cohort study of women undergoing delivery of diamniotic twins in single maternal-fetal medicine practice. They compared baseline characteristics and delivery outcomes between monochorionic and dichorionic gestations. The primary outcome was the mode of delivery. For monochorionic–diamniotic twin pregnancies at or after 34 weeks of gestation, they also compared neonatal outcomes between women who did and did not attempt a vaginal delivery.

A total of 1,121 diamniotic twin pregnancies were identified, of which 202 were monochorionic and 919 were dichorionic.

- Mode of delivery did not differ between monochorionic and dichorionic pregnancies, both in the overall cohort and in the subgroup of women who attempted vaginal delivery.

- For patients with vaginal delivery of twin A, the mode of delivery for twin B did not differ between the groups.

- Among the patients with monochorionic pregnancies at or after 34 weeks of gestation, neonatal outcomes did not differ between women who did and did not attempt a vaginal delivery.

In particular, monochorionic–diamniotic pregnancies are not at an increased risk of cesarean delivery when compared with their dichorionic–diamniotic counterparts.

Obstetrics & Gynecology
Source: https://journals.lww.com/greenjournal/Fulltext/2021/09000/Mode_of_Delivery_in_Monochorionic_Compared_With.5.aspx
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