Induction With Misoprostol: Oral Mucosa Versus Vaginal Epithelium (IMPROVE)

Summary

The primary objective of this study is to compare the efficacy and safety of vaginal and buccal misoprostol for women undergoing labor induction at greater than or equal to 37+ 0 completed weeks gestation. Thus, the investigators have both efficacy and a safety primary outcomes. The secondary objective of this study is to assess the pharmacokinetic(PK) parameters with these two routes of administration in a sub-cohort of this trial. The long term objective of this line of research is to inform providers' clinical decision making for the large number of women having labor induction. By providing robust PK and pharmacodynamic (PD) evaluation, clinical outcomes data for these two routes of administration, clinicians will be informed for evidence-based decisions about the preferred route of administration of misoprostol.

Timeline

Start

2015-09

Primary completion

2017-11

Completion

2021-12

Publications

• Background Nassar AH, Awwad J, Khalil AM, Abu-Musa A, Mehio G, Usta IM. A randomised comparison of patient satisfaction with vaginal and sublingual misoprostol for induction of labour at term. BJOG. 2007 Oct;114(10):1215-21. doi: 10.1111/j.1471-0528.2007.01492.x.
• Vorontsova Y, Haas DM, Flannery K, Masters AR, Silva LL, Pierson RC, Yeley B, Hogg G, Guise D, Heathman M, Quinney SK. Pharmacokinetics of vaginal versus buccal misoprostol for labor induction at term. Clin Transl Sci. 2022 Aug;15(8):1937-1945. doi: 10.1111/cts.13306. Epub 2022 Jun 12.
• Haas DM, Daggy J, Flannery KM, Dorr ML, Bonsack C, Bhamidipalli SS, Pierson RC, Lathrop A, Towns R, Ngo N, Head A, Morgan S, Quinney SK. A comparison of vaginal versus buccal misoprostol for cervical ripening in women for labor induction at term (the IMPROVE trial): a triple-masked randomized controlled trial. Am J Obstet Gynecol. 2019 Sep;221(3):259.e1-259.e16. doi: 10.1016/j.ajog.2019.04.037. Epub 2019 May 7.

Drugs

Indications