amniotic sac

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Related to Diamniotic: Dizygotic twins
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  • noun

Synonyms for amniotic sac

thin innermost membranous sac enclosing the developing embryo of higher vertebrates (reptiles, birds and mammals)

References in periodicals archive ?
Initial ultrasound examination revealed a 19-week monochorionic diamniotic twins gestation.
With informed consent, we recruited 8 twin pregnancies, including 4 sets of DCDA twins, 3 sets of monochorionic diamniotic (MCDA) twins, and 1 set of monochorionic monoamniotic (MCMA) twins (Table 1).
These are typically monochorionic and monoamniotic, although they may also occur as monochorionic diamniotic (Weston et al.
The division time also determines whether or not the fetuses will be contained in a monoamniotic sac or a diamniotic sac.
Cases of both monochorionic diamniotic and dichorionic diamniotic twin pregnancies were included.
Some propose it occurs from the anomalous embryogenesis in a diamniotic monochorionic twin pregnancy in which a malformed monozygotic twin lies within the body of its fellow twin.
Chorionicity was classified as: dichorionic diamniotic (DCDA), monochorionic diamniotic (MCDA) and monochorionic monoamniotic (MCMA).
A 23-year-old primigravida with a dichorionic diamniotic twin pregnancy following IVF-ET first presented at our hospital at 9 weeks of gestation in June, 2014.
87% Table IX: Placentation in Twin Pregnancy (N=91) Type of Placenta Number % Diamniotic Dichorionic 55 60.
Congenital heart defects were almost three times as likely to complicate the monochorionic / diamniotic twin gestations affected by twin-to-twin transfusion syndrome (TTTS), compared with those without TTTS, but an increase occurred regardless of the presence of TTTS.
Twin-twin transfusion syndrome (TTTS), which is a serious complication in monochorionic diamniotic twins (MCDA-T), involves unequal blood flow via the placental vascular anastomoses from the donor to the recipient twin.
MCDA-Monochorionic diamniotic twin, RFA- Radiofrequency ablation.
There were no significant differences in the groups of twins regarding mode of delivery, gestational age and weight at birth, or Apgar scores evaluated at the 1st and 5th min when the data were corrected for monoamniotic (group A) and diamniotic (group B) twins.
Foetus-in-foetu is a rare malformation in which a monozygotic diamniotic parasitic twin is incorporated into the body of its fellow twin and grows inside it.