Use of the Foley catheter versus a double balloon cervical ripening catheter in pre-induction cervical ripening in postdate primigravidae.

Aim: To compare the efficacy of two mechanical devices for pre-induction of labor cervical ripening: the Foley catheter and the Cook cervical ripening balloon.

Methods: This interventional study included 78 postdate primigravid women randomly allocated into two groups: the Foley or Cook balloon catheter. Removal of the catheters was planned approximately 12 h after insertion if spontaneous expulsion had not occurred.