Skip Navigation LinksHome > August 1982 - Volume 60 - Issue 2 > Ultrasonic Prediction of Fetal Macrosomia in Diabetic Patien...
Obstetrics & Gynecology:
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Ultrasonic Prediction of Fetal Macrosomia in Diabetic Patients.

ELLIOTT, JOHN P. MD, MC,USA; GARITE, THOMAS J. MD; FREEMAN, ROGER K. MD; McQUOWN, DENIS S. MD; PATEL, JAGDISH M. MD

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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%.

(C) 1982 The American College of Obstetricians and Gynecologists

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