• Eur. J. Obstet. Gynecol. Reprod. Biol. · Dec 2013

    A pilot study on the combined use of letrozole, mifepristone and misoprostol in termination of first trimester pregnancy up to 9 weeks' gestation.

    • Joyce Chai and Pak-Chung Ho.
    • Department of Obstetrics and Gynaecology, University of Hong Kong, Hong Kong Special Administrative Region. Electronic address: jchai@hkucc.hku.hk.
    • Eur. J. Obstet. Gynecol. Reprod. Biol. 2013 Dec 1; 171 (2): 291-4.

    ObjectiveTo assess the feasibility of adding letrozole to the standard regimen of mifepristone and misoprostol for termination of pregnancy up to 63 days.Study DesignWe recruited 50 subjects who had requested legal termination of pregnancy up to 63 days. Medical abortion was performed with a singe dose of 200 mg mifepristone and 10 mg of letrozole daily for 3 days followed by 800 mcg vaginal misoprostol.ResultsThe complete abortion rate was 98% (95% CI: 94-100%). The median induction-to-abortion interval of the regimen was 5.1 h (range 1.2-56 h). No serious adverse effects were reported.ConclusionsThe results of this pilot study suggest that a regimen of mifepristone, letrozole and misoprostol is associated with a high complete abortion rate without major adverse events.Copyright © 2013 Elsevier Ireland Ltd. All rights reserved.

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