Sonographic Measurement of Umbilical Vein and Umbilical Cord Diameters in Normal and Diabetic Pregnancies

Sonographic visualization of umbilical cord components is becoming increasingly important in evaluating fetal well-being. Standard graphs of umbilical vein and cord measurements during the last two trimesters of 219 normal singleton pregnancies showed a linear increase in transverse dimensions with advancing gestational age. Preliminary data on 38 pregnancies complicated by maternal diabetes mellitus, showed significant deviations from normal umbilical measurements.