Between 16 weeks 0 days - 18 weeks 6 days gestational age who are pursuing termination, based on reliable gestational age (defined as ultrasonography performed by a clinical provider, or a certain last menstrual period)
Able to provide informed consent
English- or Spanish-speaking
Singleton intrauterine pregnancy
You may not be if
Allergy to betadine, aquacryl hydrogel, latex-free silicone single-balloon catheter, synthetic or natural osmotic dilators
Fetal demise or known fetal anomaly
BMI \>45
Incarceration or other inability to give informed consent
Decide to undergo cervical preparation overnight prior to next-day D\&E
