Is universal cervical length screening indicated in women with prior term birth?

Objective: To determine whether universal transvaginal ultrasound (TVU) cervical length (CL) screening is indicated in women with prior term births.

Study Design: We conducted a prospective cohort study from Jan. 1, 2012, to June 30, 2013, of singleton gestations between 18 0/7-23 6/7 weeks undergoing TVU CL screening for prediction of spontaneous preterm birth (sPTB).