Background: Monochorionic diamniotic (MCDA) twins are at significantly increased risk of perinatal morbidity and mortality due to shared placentation and the presence of inter-twin placental vascular anastomoses. Aim of the work: The main aim of this study was to validate first trimester ultrasound screening for twin-to-twin transfusion syndrome (TTTS) and selective intrauterine growth restriction (sIUGR) in monochorionic twin pregnancies using the triad of nuchal translucency (NT), cord insertion site and inter-twin discordance in fetal size. Summary: We have demonstrated that NT and CRL were significantly higher in TTTS group than sIUGR group. And difference in NT, CRL and cord insertion site was identified as predictive markers for sIUGR and TTTS.

Background: Preeclampsia (PE) is defined as a pregnancy specific syndrome usually occurs after 20 week gestation, it is determined by increased blood pressure (>140mmHg systolic or >90mmHg diastolic) accompanied by proteinuria (>0.3gm protein in a 24h specimen). Preeclampsia is multifactorial disease with environmental, socioeconomic and seasonal influence. It also has genetic predisposition. Preeclampsia affects approximately 5 to 7% of all pregnancies. And it remains the major cause of maternal and fetal morbidity and mortality.Aim of Study: Is detect the possible association between SES of the pregnant woman and PE and to assess whether the rate of PE or its severity is affected by different SES levels.