We report significant correlation between the three pelvic landmarks with greatest impact on the prediction of a successful vaginal delivery: the PAA which is easily measured sonographically and the ISD and OC which are not measurable by ultrasound. This correlation may serve as a basis for future studies to assess its utility and prognostic value for a safe vaginal delivery.

Objectives Measuring the posterior horn of the lateral ventricle in the fetus during ultrasound scans may be challenging. We aimed to examine this measurement feasibility, in relation to gestational age. Methods A cross‐sectional study was conducted, including nonanomalous fetuses, in which both lateral ventricles measured less than 10 mm during anomaly scans. The measurements were performed according to the International Society of Ultrasound in Obstetrics and Gynecology guidelines. Success rate of measuring both ventricles was assessed at different gestational ages. Association between lateral ventricle width with contralateral ventricle width, gender, gestational age, and fetal head position were assessed. Results A total of 156 cases were recruited. The lateral ventricle distal to the probe was measured in all cases. In 10 cases proximal lateral ventricle could not be adequately measured (failed proximal ventricle measurement group). In 146 scans both ventricle measurements were available. All 10 cases of failed proximal ventricle measurement were in third trimester (30–38 weeks). Success rate of measurement of both ventricles was 100%, 96.2%, 71.4%, and 37.5% for gestational week 14–29, 30–32, 33–35, and 36–38, respectively (P <.001). Proximal lateral ventricle width was strongly associated with the distal ventricle width (B = 0.422, 95% confidence interval 0.29, 0.555, P <.001), but not with head position, fetal gender, or gestational age. Conclusions Measurement of the proximal lateral ventricle is feasible in most cases, even during late third trimester scans. Efforts should be made to visualize both ventricles in every evaluation of the fetal brain.

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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.

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