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Buccal versus intravaginal misoprostol administration for cervical ripening
S J Carlan1, Danielle Blust, William F O'Brien
1Department of Obstetrics and Gynecology, Arnold Palmer Hospital for Children and Women, Orlando, FL, USA. scarlan@orhs.org
American Journal of Obstetrics and Gynecology
|February 21, 2002
Summary
Buccal misoprostol effectively ripens the cervix, similar to vaginal administration. However, the buccal route is associated with a significantly higher incidence of tachysystole.
Area of Science:
- Obstetrics and Gynecology
- Pharmacology
- Reproductive Medicine
Background:
- Cervical ripening is crucial for initiating labor induction.
- Misoprostol is a widely used agent for cervical ripening.
- Different routes of misoprostol administration may affect efficacy and safety.
Purpose of the Study:
- To compare the efficacy and safety of buccal versus intravaginal misoprostol for cervical ripening.
- To evaluate the time to vaginal delivery and the incidence of adverse events.
Main Methods:
- A randomized controlled trial involving 157 pregnant women with unfavorable cervices.
- Participants received misoprostol via either buccal pouch or intravaginal administration.
- Dosage regimens were adjusted based on initial doses, with a higher total dose allowed for the buccal group.
Main Results:
- Vaginal delivery intervals were similar between the buccal and intravaginal misoprostol groups (23.5 vs. 21.3 hours).
- The proportion of women delivering vaginally within 24 hours was comparable (63% vs. 67%).
- The incidence of tachysystole was significantly higher in the buccal group (38%) compared to the vaginal group (19%).
Conclusions:
- Buccal misoprostol is an effective method for cervical ripening.
- The buccal route of misoprostol administration is associated with an increased risk of tachysystole compared to the intravaginal route.