Results
The study involved 4324 pregnant (both singleton and twin) women (4366 fetuses) whose ages ranged from 18 years to 45 years. All the referred cases had undergone routine obstetric ultrasound before referral to detect multiple gestation and to diagnose any extra- cardiac abnormality such as hydrops fetalis, poly or oligohydramnios, increased first trimester nuchal translucency, abnormal fetal heart beats and abnormal four and five chamber views, Intracardiac echogenic focus (ICEF), single umbilical artery, cardiac mass, abnormal cardiac position. The timing of the anomaly scan ranged from 16 to 32 weeks with a mean of 20weeks. Their gestational age (GA) at referral for FE ranged from 16 to 34 weeks with a mean of 23 weeks.