Foley catheter versus cervical double balloon for labor induction: a prospective randomized study

Area of Science:

• Obstetrics and Gynecology
• Reproductive Medicine
• Maternal-Fetal Medicine

Background:

• Mechanical cervical ripening is crucial for successful labor induction.
• Comparing the efficacy of different mechanical methods is essential for optimizing obstetric practice.

Purpose of the Study:

• To compare the Cervical Ripening Double Balloon (CRDB) catheter with the Foley catheter for labor induction.
• To evaluate the impact of each catheter on Bishop score, time to delivery, and cesarean section rates.

Main Methods:

• A prospective, blinded study randomized 180 women (85 nulliparas, 95 multiparas) to labor induction using either a Foley catheter or a CRDB catheter.
• Primary outcomes included Bishop score increment, interval from catheter removal to delivery, and cesarean section rate.

Main Results:

• In multiparas, the CRDB catheter resulted in a significantly greater Bishop score increment compared to the Foley catheter (4.4 vs. 3.4, p=.02).
• The interval from catheter removal to delivery was shorter with the CRDB catheter in both nulliparas (14.6 vs. 22.6 hours, p=.05) and multiparas (8.6 vs. 13.9 hours, p=.03).
• In nulliparas, the cesarean section rate was significantly lower with the CRDB catheter (20%) than with the Foley catheter (46.5%, p=.02).

Conclusions:

• The CRDB catheter is more effective than the Foley catheter for cervical ripening in multiparas, indicated by a greater Bishop score increment.
• The CRDB catheter shortens the time to delivery for both nulliparous and multiparous women.
• Utilizing the CRDB catheter in nulliparas is associated with a reduced rate of cesarean sections.