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- W2021129256 abstract "Vaginal delivery of a non-vertex presenting twin is not recommended. Our objective is to evaluate changes in fetal presentation of twin pregnancies and to counsel mothers with evidence. We performed a retrospective analysis of the pattern of spontaneous version in twin pregnancies from early third trimester to birth. We identified a total of 310 eligible women of live-born twin pregnancies in Seoul National University Hospital during 1999–2009. Gestational age was divided in two intervals: early-3rd trimester (27–30 weeks); and mid-3rd trimester (31–34 weeks). We analyzed change of fetal presentation between two intervals and compared the pattern of change of presentation during antepartum (divided in 4 groups; group [1]–[4]) and delivery. The first twin's presentations at delivery according to 4 groups are described below (Table 1). The chances of vertex presenting twin at delivery differ according to whether an individual presenting twin was vertex or not at early-3rd trimester, even if the presentation is the same vertex at mid-3rd trimester (98.9% vs. 87%, P = 0.01)). The different chances of being vertex presentation at birth was statistically significant when comparing group [2] with group [4] (38.5% vs. 14.3%, P = 0.045). Almost all twins with vertex presentation at 3rd trimester is unlikely to be non-vertex at birth. We concluded that twins with vertex presentation at mid-3rd trimester had different chances of becoming a vertex-presenting twin at delivery according to presentation at early-3rd trimester. Inversely we can explain a mother with non-vertex presenting twin at mid-3rd trimester that the baby's position is more unstable when it had vertex presentation at early-3rd trimester." @default.
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- W2021129256 date "2010-10-01" @default.
- W2021129256 modified "2023-09-23" @default.
- W2021129256 title "OP19.09: Spontaneous version of fetal presentation in twin pregnancies during third trimester" @default.
- W2021129256 doi "https://doi.org/10.1002/uog.8107" @default.
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