title: Ultrasonic prediction of fetal macrosomia in diabetic patients.
abstract: Traumatic morbidity in the newborn of a diabetic mother occurs in 3 to 9% of vaginal deliveries in diabetic pregnancies. Prediction of diabetic macrosomia by ultrasound measurement of chest diameter and biparietal diameter is evaluated in this study. A macrosomia index was calculated for 70 diabetic pregnancies by subtracting the biparietal diameter from the chest diameter (chest - biparietal diameter). Twenty-three macrosomic infants (weight greater than 4000 g) were delivered. In this study 20/23 (87%) of the infants weighing greater than 4000 g had a chest - biparietal diameter of 1.4 cm or greater. There were 4 cases of shoulder dystocia in 15 patients delivered vaginally. In this study, cesarean section for all fetuses with a chest - biparietal diameter of 1.4 cm or greater would reduce the incidence of traumatic morbidity from 27% to 9%.
mesh_terms: D001835:Body Weight; D002585:Cesarean Section; D005260:Female; D005333:Fetus / Q000502:physiology*; D006128:Growth; D006801:Humans; D007231:Infant, Newborn; D011247:Pregnancy; D011254:Pregnancy in Diabetics; D011296:Prenatal Diagnosis; D014463:Ultrasonography