In Renee Workman's Scenario Action #2, which intervention is a vaginal cervical ripening agent?

In Renee Workman's Scenario Action #2, which intervention is a vaginal cervical ripening agent?

• A. Dinoprostone 10 mg insert vaginally x1
• B. Magnesium sulfate 4 gm over 15 minutes by intermittent intravenous infusion
• C. Magnesium sulfate 40 grams in 100mL of lactated Ringer's continuous intravenous infusion @ 2g/hr
• D. Restrict total hourly fluid intake to 125mL/hr

Answer: (A)

Vaginal cervical ripening uses meds placed directly into the vagina to soften and dilate the cervix in preparation for labor. A dinoprostone insert delivered vaginally provides prostaglandin E2 right at the cervix, promoting ripening and making the cervix more favorable for labor induction. That direct local effect on the cervix is why this option is the correct choice. The other options involve systemic therapies or fluid management rather than cervical changes. Magnesium sulfate given IV is used for seizure prophylaxis in preeclampsia/eclampsia or as a tocolytic in some settings, not to ripen the cervix. A larger continuous IV magnesium dose serves the same role—systemic, not local to the cervix. Restricting hourly fluids is about maternal fluid balance and does not influence cervical readiness for labor.

Vaginal cervical ripening uses meds placed directly into the vagina to soften and dilate the cervix in preparation for labor. A dinoprostone insert delivered vaginally provides prostaglandin E2 right at the cervix, promoting ripening and making the cervix more favorable for labor induction. That direct local effect on the cervix is why this option is the correct choice.

The other options involve systemic therapies or fluid management rather than cervical changes. Magnesium sulfate given IV is used for seizure prophylaxis in preeclampsia/eclampsia or as a tocolytic in some settings, not to ripen the cervix. A larger continuous IV magnesium dose serves the same role—systemic, not local to the cervix. Restricting hourly fluids is about maternal fluid balance and does not influence cervical readiness for labor.