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dc.contributor.authorScoccia, Bert
dc.contributor.authorDemir, Habibe
dc.contributor.authorKang, Yuna
dc.contributor.authorFierro, Michelle A.
dc.contributor.authorWinston, Nicola J.
dc.date.accessioned2013-11-19T19:18:14Z
dc.date.available2013-11-19T19:18:14Z
dc.date.issued2012-06
dc.identifier.bibliographicCitationScoccia B, Demir H, Kang Y, Fierro MA, Winston NJ. In vitro fertilization pregnancy rates in levothyroxine-treated women with hypothyroidism compared to women without thyroid dysfunction disorders. Thyroid. 2012 Jun;22(6):631-6. doi: 10.1089/thy.2011.0343.en_US
dc.identifier.issn1557-9077
dc.identifier.urihttp://hdl.handle.net/10027/10538
dc.descriptionThis is a copy of an article published in the Thyroid © 2012 Copyright Mary Ann Liebert, Inc.; Thyroid is available online at: http://www.liebertonline.com.en_US
dc.description.abstractBackground: Untreated hypothyroidism can lead to ovulatory dysfunction resulting in oligo-amenorrhea. Treatment with levothyroxine can reverse such dysfunction and thus should improve fertility. The purpose of this retrospective study was to assess whether in vitro fertilization (IVF) pregnancy rates differ in levothyroxinetreated women with hypothyroidism compared to women without thyroid dysfunction/disorders. Methods: Treated hypothyroid and euthyroid women undergoing IVF at an academic IVF center were studied after Institutional Review Board approval. Women with hypothyroidism were treated with levothyroxine 0.025– 0.15 mg/day for at least 3 months to maintain baseline thyrotropin (TSH) levels of 0.35–4.0 lU/mL prior to commencing IVF treatment (HYPO-Rx group). Causes of infertility were similar in both groups with the exception of male factor, which was more common in the HYPO-Rx group. The main outcomes studied were implantation rate, clinical pregnancy rate, clinical miscarriage rate, and live birth rate. Results: We reviewed the first IVF retrieval cycle performed on 240 women aged 37 years or less during the period January 2003 to December 2007. Women with treated hypothyroidism (n = 21) had significantly less implantation, clinical pregnancy, and live birth rates than euthyroid women (n = 219). Conclusions: We conclude that, despite levothyroxine treatment, women with hypothyroidism have a significantly decreased chance of achieving a pregnancy following IVF compared to euthyroid patients. A larger prospective study is necessary to assess confounding variables, confirm these findings, and determine the optimal level of TSH prior to and during controlled ovarian hyperstimulation for IVF.en_US
dc.description.sponsorshipThis project was supported by the University of Illinois at Chicago Center for Clinical Translational Science, Award Number UL1RR029879, from the National Center for Research Resources.en_US
dc.language.isoen_USen_US
dc.publisherMary Ann Lieberten_US
dc.titleIn Vitro Fertilization Pregnancy Rates in Levothyroxine-Treated Women With Hypothyroidism Compared to Women Without Thyroid Dysfunction Disordersen_US
dc.typeArticleen_US


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