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Outcome of monochorionic twins with prenatally diagnosed bipartite placenta

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The objective of this study was to identify possible implications and risk factors in monochorionic (MC) twin pregnancies having a bipartite placenta. Between 2014 and 2019 data on such pregnancies… Click to show full abstract

The objective of this study was to identify possible implications and risk factors in monochorionic (MC) twin pregnancies having a bipartite placenta. Between 2014 and 2019 data on such pregnancies was prospectively collected and retrospectively analyzed. Monochorionicity was confirmed either by the presence of a T-sign, one chorion and two separate amnion cavities, or by histological examination postnatally. Bipartite placenta was diagnosed when two placenta lobes were identified with no placental connection between them. Risks of bipartite placenta in MCDA twins were evaluated by background data, prenatal and postnatal outcome. Five twin pregnancies were included in the study. 60 % (n = 3) were complicated by twin-twin-transfusion syndrome (TTTS), 20 % by selective intrauterine growth restriction (sIUGR) (n = 1) and 20 % (n = 1) by severe fetal malformations. In every case an intervention was indicated, but in only 60% (n = 3) possible, due to poor surgical conditions. Overall fetal survival rate at birth was 90 %. Neonatal survival rate was 66.63%. Bipartite placenta is a very rare phenomenon in MCDA twin pregnancies. It seems to be associated with a higher rate of complications, such as TTTS and sIUGR and might induce surgical difficulties in prenatal interventions.

Keywords: monochorionic twins; outcome monochorionic; twins prenatally; placenta; twin pregnancies; bipartite placenta

Journal Title: Archives of Gynecology and Obstetrics
Year Published: 2019

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