Unequal Placental Sharing in Monochorionic Diamniotic Twins: an Observational Study
Trial Parameters
Brief Summary
This is an observational study in 3 cohorts of monochorionic diamniotic (MCDA) twins. The aim of the study is to assess whether unequal placental sharing can be predicted in pregnancy and whether it is predictive of pregnancy outcome.
Eligibility Criteria
Inclusion Criteria: * MCDA cohort * Ongoing monochorionic diamniotic twin pregnancy between 11 and 14 weeks, as determined by the crown rump length of the larger twin in spontaneous conceptions and by the date of insemination or embryonic age at replacement in pregnancies resulting from subfertility treatment * Women aged 18 years or more, who are able to consent * Written informed consent to participate in this study, forms being approved by the Ethical Committees * TTTS cohort * Monochorionic diamniotic twin pregnancy, with gestational age defined in the first trimester as mentioned above * Complicated by TTTS according to the definition used in the Quintero staging of TTTS (DVP of donor \< 2 cm and DVP of receptor \> 8 cm before 20 weeks or \> 10 cm after 20 weeks * Undergoing laser surgery for TTTS * Women aged 18 years or more, who are able to consent * Written informed consent to participate in this study, forms being approved by the Ethical Committees * sIUGR cohort * Monochorio