Therapeutic cerclage may be more efficacious in women who develop cervical insufficiency after a term delivery.

Objective: Our objective was to determine whether obstetric history affects the efficacy of therapeutic cerclage.

Study Design: Data were gathered prospectively on patients receiving therapeutic cerclage, defined as midtrimester presentation with a cervical length less than 2.5 cm and prior preterm delivery or cervical dilatation with visible membranes on sterile speculum exam.

Risk factors for cervical insufficiency after term delivery.

Objective: Cervical insufficiency can be unexpected in a woman with a previous term birth. Our objective was to determine what risk factors, if any, place women with a term delivery at risk for cervical insufficiency in a subsequent pregnancy.

Study Design: Demographic characteristics were collected for a cohort of women with at least 1 previous term birth followed by cervical insufficiency (subject group) and for uncomplicated multiparous women (control group).