Sonographic assessment of lower uterine segment thickness at term in women with previous cesarean delivery.

Aim: The purpose of this study was to establish the validity of abdominal sonographic evaluation of lower uterine segment (LUS) thickness in full-term pregnancies with a single previous cesarean section, and to assess the usefulness of measuring LUS thickness in predicting the risk of uterine dehiscence.

Methods: Three hundred and thirty-six women with a single previous cesarean section who had an ultrasound measurement of the LUS thickness in pregnancy were enrolled. Abdominal sonographic assessment of LUS was carried out within 2 weeks of delivery.