Ductus Venosus Doppler at 11 to 13 Weeks of Gestation in the Prediction of Outcome in Twin Pregnancies

OBJECTIVE:To examine the independent contribution of abnormal flow in the ductus venosus at 11 to 13 weeks of gestation in the prediction of adverse pregnancy outcome in relation to chorionicity.METHODS:This was a prospective study in 516 dichorionic and 179 monochorionic twin pregnancies in which t