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Les modifications m\u00e9taboliques observ\u00e9es au cours de l\u2019ob\u00e9sit\u00e9 et la masse corporelle plus importante des femmes pr\u00e9sentant une ob\u00e9sit\u00e9 peuvent en effet \u00eatre \u00e0 l\u2019origine d\u2019une r\u00e9duction de l\u2019efficacit\u00e9 de la contraception hormonale. N\u00e9anmoins, les donn\u00e9es, m\u00eames peu nombreuses, laissent penser que l\u2019efficacit\u00e9 de la plupart des m\u00e9thodes de contraception n\u2019est <jats:italic>a priori<\/jats:italic> pas diminu\u00e9e chez ces femmes. La chirurgie bariatrique, utilis\u00e9e pour rem\u00e9dier \u00e0 l\u2019ob\u00e9sit\u00e9, constitue une situation complexe, qui impose une contraception dans la premi\u00e8re ann\u00e9e post-op\u00e9ratoire afin d\u2019\u00e9viter toute grossesse. Si la technique chirurgicale induit une malabsorption (comme le <jats:italic>bypass<\/jats:italic>), toute contraception administr\u00e9e par voie orale verra son efficacit\u00e9 fortement diminu\u00e9e et sera donc d\u00e9conseill\u00e9e en raison d\u2019un haut risque d\u2019\u00e9chec.<\/jats:p>","DOI":"10.1051\/medsci\/2021147","type":"journal-article","created":{"date-parts":[[2021,10,14]],"date-time":"2021-10-14T08:03:46Z","timestamp":1634198626000},"page":"882-887","source":"Crossref","is-referenced-by-count":5,"title":["Contraception dans le contexte de 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