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Guide Wire Assisted Catheterization and Colored Dye Injection for Vascular Mapping of Monochorionic Twin Placentas
Published on: September 5, 2011
Abnormally shaped placentae in twin pregnancy
Shunji Suzuki1, Miwa Igarashi, Yusuke Inde
1Department of Obstetrics and Gynecology, Japanese Red Cross Katsushika Maternity Hospital, 5-11-12 Tateishi, Katsushika-ku, Tokyo, Japan. czg83542@mopera.ne.jp
Archives of Gynecology and Obstetrics
|April 1, 2009
Summary
Succenturiate lobes of placenta are more frequent in twin pregnancies. However, abnormal placental shapes do not appear to impact perinatal outcomes in twins, unlike in singletons.
Area of Science:
- Obstetrics and Gynecology
- Perinatal Medicine
- Reproductive Health
Background:
- Abnormally shaped placentae, including circumvallate placenta and succenturiate lobes, can occur in pregnancy.
- The implications of these placental variations may differ between singleton and twin gestations.
Purpose of the Study:
- To compare the incidence of circumvallate placenta and succenturiate lobes of placenta in twin versus singleton pregnancies.
- To investigate the association between abnormally shaped placentae and pregnancy complications in both twin and singleton cohorts.
Main Methods:
- Retrospective cohort study involving 592 twin pregnancies (monochorionic and dichorionic) and 11,311 singleton pregnancies.
- Data collected from pregnancies managed between 2000 and 2007.
Main Results:
- The incidence of circumvallate placenta was similar between twin and singleton pregnancies (1.2% vs. 1.9%).
- Succenturiate lobes of placenta were significantly more common in twin pregnancies (1.5%) compared to singleton pregnancies (0.73%, P=0.033).
- In singleton pregnancies, abnormal placentae correlated with complications like placental abruption, vasa previa, and retained placenta; however, no such association was found in twin pregnancies.
Conclusions:
- Succenturiate lobes of placenta show a higher incidence in twin pregnancies.
- Abnormally shaped placentae do not appear to influence perinatal outcomes in twin pregnancies.
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