| Effects of metformin in women with polycystic ovary syndrome treated with gonadotrophins for in vitro fertilisation and intracytoplasmic sperm injection cycles: a systematic review and meta-analysis of randomised controlled trials. | |
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MedLine Citation:
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PMID: 23194199 Owner: NLM Status: Publisher |
Abstract/OtherAbstract:
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BACKGROUND: Metformin is widely used for treating women with polycystic ovary syndrome (PCOS), and many patients with PCOS who are infertile receive gonadotrophins while being treated with metformin. OBJECTIVES: To assess the effects of metformin administration in infertile patients with PCOS who receive gonadotrophins for in vitro fertilisation (IVF) and intracytoplasmic sperm injection (ICSI) cycles. SEARCH STRATEGY: We searched international scientific databases, websites for the registration of trials, and bibliographies of retrieved articles, books, and review articles up to August 2012. SELECTION CRITERIA: Randomised controlled trials (RCTs). DATA COLLECTION AND ANALYSIS: Authors independently reviewed and extracted the data. MAIN RESULTS: Ten RCTs (with a total of 845 women with PCOS) were included in the final analysis. Metformin administration in IVF/ICSI cycles had no effect on the rates of pregnancy (OR 1.20, 95% CI 0.90-1.61) and live birth (OR 1.69, 95% CI 0.85-3.34). No effect of metformin dose, metformin pretreatment duration, and stopping time of metformin administration was observed on these reproductive end points. Metformin administration reduced the risk of ovarian hyperstimulation syndrome (OHSS; OR 0.27, 95% CI 0.16-0.46) and of miscarriage (OR 0.50, 95% CI 0.30-0.83), while increased that of implantation (OR 1.42, 95% CI 1.24-2.75). AUTHOR'S CONCLUSIONS: In infertile patients with PCOS treated with gonadotrophins for IVF/ICSI cycles, metformin exerts no clinical effect on rates of pregnancy or live birth, but it reduces the risk of OHSS, and improves the rates of miscarriage and implantation. Further RCTs are needed to assess the reproductive effect of metformin in young well-selected patients with PCOS and specific phenotypes and features. |
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Authors:
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S Palomba; A Falbo; Gb La Sala |
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Publication Detail:
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Type: JOURNAL ARTICLE Date: 2012-11-30 |
Journal Detail:
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Title: BJOG : an international journal of obstetrics and gynaecology Volume: - ISSN: 1471-0528 ISO Abbreviation: BJOG Publication Date: 2012 Nov |
Date Detail:
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Created Date: 2012-11-30 Completed Date: - Revised Date: - |
Medline Journal Info:
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Nlm Unique ID: 100935741 Medline TA: BJOG Country: - |
Other Details:
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Languages: ENG Pagination: - Citation Subset: - |
Copyright Information:
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© 2012 The Authors BJOG An International Journal of Obstetrics and Gynaecology © 2012 RCOG. |
Affiliation:
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Obstetrics and Gynaecology Unit, Department of Obstetrics, Gynaecology and Paediatrics, Azienda Ospedaliera ASMN, Istituto di Ricovero e Cura a Carattere Scientifico, University of Modena and Reggio Emilia, Italy. |
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