Prediction of Fetal Macrosomia by US

Fetal macrosomia defined as birth weight above 90th centile ,macrosomia occurs in 42-62%of pregnancy complicated by type 1 diabetes mellitus ,in 30-56% of pregnancy complicated by type 2 diabetes mellitus . -The delivery of macrosomic infant has potentially severe consequence for both the newborn and mother .Increased birth weight increase the risk in the fetus of shoulder dystocia and premature brachial plexus injury ,and those infant weighing above 4500g are at increased risk for neonatal morbidity ,including the need for assisted ventilation and meconium aspiration .Maternal complication result from operative delivery and include postpartum hemorrhage ,third or fourth degree laceration and postpartum infection .