707: Does laterality matter when measuring fetal brain lateral ventricles width?

Abstract

range of 4.6-6.3% (mean 5.44 AE 0.672%). The 261 second trimester normal HbA1c values produced a normal range of 4.2-6.1% (mean 5.15 AE 0.746%). 252 third trimester normal women had HbA1c range 3.8-6.4% (mean 5.23 AE 0.890%). Linear regression demonstrates a non-significant gradient over gestation (Figure 1, R2 ¼ 0.0601). 120 women were excluded by abnormal GCT in the first (n¼30, mean HbA1c 5.45%), second (n¼ 47, mean HbA1c 5.35%) and third (n¼43, mean HbA1c 5.43%) trimesters, respectively. CONCLUSION: Our large cohort includes pregnancies with serial testing that exclude GDM and thus confirming normal HbA1c across gestation. The lower limit of hemoglobin A1c appears to decrease as pregnancy advances and the normal range HbA1c never exceeds 6.5 in any trimester. However, a normal HbA1c does not necessarily rule out the diagnosis or development of GDM in pregnancy. A GCT evaluation is still necessary for the complete evaluation of GDM.