Novel application of polypropylene sling: transvaginal cervicoisthmic cerclage in women with high risk of preterm delivery.

Study Objective: To describe a novel technique of transvaginal cervicoisthmic cerclage with a polypropylene sling in prevention of preterm labor in pregnant women at high risk.

Design: Retrospective study (Canadian Task Force classification: III).

Setting: University hospital (department of obstetrics and gynecology).