RCT of Cervical Ripening Double Ballon Catheter Prior to Dilation and Evacuation.

The physician will place a CRDB catheter for overnight cervical preparation. The CRDB catheter is comprised of two balloons that can be inflated with up to 80 mL of sterile water.

Osmotic dilators (e.g., laminaria and Dilapan-S) are mechanical dilators that are placed in the cervix prior to gynecologic procedures and facilitate dilation through the slow absorption of moisture. The physician will place osmotic dilators in the standard fashion.