• J Perinat Med · Jan 2010

    Comparative Study

    Atosiban vs. ritodrine as a tocolytic in external cephalic version at term: a prospective cohort study.

    • Jorge Burgos, Nekane Eguiguren, Eider Quintana, Patricia Cobos, Maria del Mar Centeno, Rosa Larrieta, and Luis Fernández-Llebrez.
    • Department of Obstetrics and Gynecology, Cruces University Hospital, Baracaldo, Vizcaya, Spain. jburgoss@sego.es
    • J Perinat Med. 2010 Jan 1; 38 (1): 23-8.

    ObjectiveTo compare the success rate of external cephalic version (ECV) at term using ritodrine or atosiban as a tocolytic agent.Study DesignProspective cohort study with a sample of 236 pregnant women with a breech presentation at term, from November 2006 to March 2008. Data have been analyzed from the moment the cephalic version is performed until the time of delivery.ResultsECV success rate using ritodrine as a tocolytic agent was 56.8% compared to 31.4% with atosiban. Ritodrine increases the version success potential more significantly than atosiban (P<0.05). In both cases, the use of ECV reduced the rate of cesarean sections, although a higher number of versions are required with atosiban [numbers needed to treat (NNT)=9.08] to avoid a cesarean section compared to ritodrine (NNT=3.41).ConclusionsRitodrine seems better than atosiban as tocolytic agent for ECVs.

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