Mifepristone Versus Laminaria for Cervical Ripening in Midtrimester Induction

Summary

Data from other countries have suggested that oral mifepristone used as a cervical ripening agent may decrease induction to delivery time in midtrimester inductions. To our knowledge, there are no trials comparing mifepristone to laminaria in a standard clinical setting with standardized misoprostol induction protocol to examine the issue of induction to delivery time. We hypothesize that mifepristone will work at least as well as laminaria for midtrimester cervical ripening prior to induction of labor with misoprostol.

Timeline

Start

2004-01

Primary completion

—

Completion

2006-06

Outcome

Met primary endpoint

paper Induction-to-delivery time was significantly shorter in the mifepristone arm (mean=10 h vs. 16 h, p=.01; median=7.5 h vs. 13.4 h, p=.01). PMID 17963864 ↗

paper Pain with cervical ripening was also significantly less in the mifepristone group than in the laminaria group (median=1 vs. 6 on an 11-point visual analogue scale, p<.001). PMID 17963864 ↗

Publications

• Prairie BA, Lauria MR, Kapp N, Mackenzie T, Baker ER, George KE. Mifepristone versus laminaria: a randomized controlled trial of cervical ripening in midtrimester termination. Contraception. 2007 Nov;76(5):383-8. doi: 10.1016/j.contraception.2007.07.008. Epub 2007 Oct 4.

Drugs

Evaluation	Drug	Modality	Dose	Route
Subject	Mifepristone	Small molecule	—	Oral

Indications

No indication recorded.