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<article article-type="research-article" dtd-version="1.3" xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xml:lang="ru"><front><journal-meta><journal-id journal-id-type="publisher-id">vestim</journal-id><journal-title-group><journal-title xml:lang="ru">Известия Национальной  академии наук Беларуси. Серия медицинских наук</journal-title><trans-title-group xml:lang="en"><trans-title>Proceedings of the National Academy of Sciences of Belarus, Medical series</trans-title></trans-title-group></journal-title-group><issn pub-type="ppub">1814-6023</issn><issn pub-type="epub">2524-2350</issn><publisher><publisher-name>The Republican Unitary Enterprise Publishing House "Belaruskaya Navuka"</publisher-name></publisher></journal-meta><article-meta><article-id pub-id-type="doi">10.29235/1814-6023-2024-21-4-305-315</article-id><article-id custom-type="elpub" pub-id-type="custom">vestim-999</article-id><article-categories><subj-group subj-group-type="heading"><subject>Research Article</subject></subj-group><subj-group subj-group-type="section-heading" xml:lang="ru"><subject>КЛИНИЧЕСКАЯ И ЭКСПЕРИМЕНТАЛЬНАЯ МЕДИЦИНА</subject></subj-group><subj-group subj-group-type="section-heading" xml:lang="en"><subject>CLINICAL AND EXPERIMENTAL MEDICINE</subject></subj-group></article-categories><title-group><article-title>Эффективность экстракорпорального оплодотворения при бесплодии у женщин с эутиреоидным статусом</article-title><trans-title-group xml:lang="en"><trans-title>Effectiveness of in vitro fertilization for infertility in women with euthyroid status</trans-title></trans-title-group></title-group><contrib-group><contrib contrib-type="author" corresp="yes"><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Жуковская</surname><given-names>С. В.</given-names></name><name name-style="western" xml:lang="en"><surname>Zhukovskaya</surname><given-names>S. V.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Жуковская Светлана Викторовна – доцент</p><p>пр. Дзержинского, 83, 220116, г. Минск</p></bio><bio xml:lang="en"><p>Svetlana V. Zhukovskaya – Associate Professor</p><p>83, Dzerzhinski Ave., 220116, Minsk</p></bio><email xlink:type="simple">dr.zhukovskaya@gmail.com</email><xref ref-type="aff" rid="aff-1"/></contrib><contrib contrib-type="author" corresp="yes"><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Можейко</surname><given-names>Л. В.</given-names></name><name name-style="western" xml:lang="en"><surname>Mozhejko</surname><given-names>L. F.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Можейко Людмила Федоровна – д-р мед. наук, профессор, заведующий кафедрой</p><p>пр. Дзержинского, 83, 220116, г. Минск</p></bio><bio xml:lang="en"><p>Lуudmila F. Mozhejko – D. Sc. (Med.), Professor, Head of the Department</p><p>83, Dzerzhinski Ave., 220116, Minsk</p></bio><email xlink:type="simple">lfmozheiko@gmail.com</email><xref ref-type="aff" rid="aff-1"/></contrib></contrib-group><aff-alternatives id="aff-1"><aff xml:lang="ru"><institution>Белорусский государственный медицинский университет</institution></aff><aff xml:lang="en"><institution>Belarusian State Medical University</institution></aff></aff-alternatives><pub-date pub-type="collection"><year>2024</year></pub-date><pub-date pub-type="epub"><day>30</day><month>11</month><year>2024</year></pub-date><volume>21</volume><issue>4</issue><fpage>305</fpage><lpage>315</lpage><permissions><copyright-statement>Copyright &amp;#x00A9; Жуковская С.В., Можейко Л.В., 2024</copyright-statement><copyright-year>2024</copyright-year><copyright-holder xml:lang="ru">Жуковская С.В., Можейко Л.В.</copyright-holder><copyright-holder xml:lang="en">Zhukovskaya S.V., Mozhejko L.F.</copyright-holder><license xml:lang="ru" license-type="creative-commons-attribution" xlink:href="https://creativecommons.org/licenses/by/4.0/" xlink:type="simple"><license-p>Данная работа распространяется под лицензией Creative Commons Attribution 4.0.</license-p></license><license xml:lang="en" license-type="creative-commons-attribution" xlink:href="https://creativecommons.org/licenses/by/4.0/" xlink:type="simple"><license-p>This work is licensed under a Creative Commons Attribution 4.0 License.</license-p></license></permissions><self-uri xlink:href="https://vestimed.belnauka.by/jour/article/view/999">https://vestimed.belnauka.by/jour/article/view/999</self-uri><abstract><p>Вопрос о влиянии тиреотропного гормона (ТТГ) на вероятность наступления беременности в современной научной литературе является дискутабельным, поскольку опубликованные на протяжении последних нескольких лет результаты исследований подвергают сомнению общепринятое мнение о том, что при планировании беременности уровень ТТГ должен быть снижен до целевых значений, не превышающих 2,5 мМЕ/л.</p><p>Цель исследования – изучить влияние повышения у женщин концентрации ТТГ в пределах 2,5 –4,0 мМЕ/л  на исходы программ экстракорпорального оплодотворения (ЭКО), проанализировав параметры контролируемой овариальной стимуляции (КОС) и эмбриологические показатели ее эффективности, а также на частоту наступления беременности и репродуктивных потерь.</p><p>Работа проведена на базе учреждения здравоохранения МЧУП «Центр репродуктивной медицины». В иссле- дование было включено 195 супружеских пар, которым проводили ЭКО в связи с бесплодием. Сформированы  две группы: 1-ю группу составили 94 женщины, у которых уровень ТТГ составлял 2,5–4,0 мМЕ/л, 2-ю группу –  101 женщина, у которой данный показатель до начала овариальной стимуляции не превышал 2,5 мМЕ/л. Показано, что у женщин с концентрацией ТТГ 2,5–4,0 мМЕ/л при условии эутиреоидного статуса эмбриологические параметры эффективности КОС (качество роста фолликулов, созревания яйцеклеток, процент фертилизации и образования бластоцист) в обеих группах были сравнимы. Установлено, что эффективность программ ЭКО не зависит от преконцепционного уровня ТТГ, если данный показатель находится в диапазоне 2,5–4,0 мМЕ/л: отмечена сопоставимая частота наступления беременности (60,64 и 51,49 %; p = 0,254), частота самопроизвольного прерывания беременности в первом триместре (15,79 и 9,62 %; p = 0,500), частота поздних самопроизвольных выкидышей в сроке гестации 12–22 недели (3,51 и 11,54 %; p = 0,709).</p></abstract><trans-abstract xml:lang="en"><p>The influence of thyroid hormone (TSH) on the probability of pregnancy is a controversial issue in modern scientific literature, since impressive scientific data has been published lately questioning previously undoubtful fact that preconception levels of TSH must be decreased to target values not exceeding 2.5 mIU/l.</p><p>The aim of the research was to investigate the influence of elevation of TSH in the range of 2.5–4.0 mIU/l in women  on the outcomes of in-vitro fertilization (IVF) procedures by analyzing the parameters of controlled ovarian stimulation (COS) and embryological indicators of its efficacy, as well as the percentage of pregnancy and reproductive losses.</p><p>The work was based in “Centre for Reproductive Medicine”. The study included 195 married couples that under- went IVF due to infertility. Two groups were formed: Group 1 consisted of 94 women with pre-IVF TSH ranging between 2.5–4.2 mIU/l, while Group 2 included 101 women with the initial level of TSH before the beginning of ovarian stimulation less than 2.5 mIU/l.</p><p>It was established that in women with TSH ranging between 2.5–4.2 mIU/l with normal levels of free thyroxine, embryological parameters of COS efficiency showed comparable results of follicle growth, oocyte maturation, percentage  of blastocyst formation in both groups. The efficiency of in vitro fertilization was found to be independent of the preconception TSH level if this index was in the range of 2.5–4.2 mIU/l: comparable incidence of pregnancy (60.64 and 51.49 %; p = 0.254), incidence of spontaneous abortion in the 1st trimester (15.79 and 9.62 %; p = 0.500), incidence of late spontaneous miscarriage at gestational age 12–22 weeks (3.51 and 11.54 %; p = 0.709 were observed).</p></trans-abstract><kwd-group xml:lang="ru"><kwd>бесплодие</kwd><kwd>вспомогательные репродуктивные технологии</kwd><kwd>экстракорпоральное оплодотворение</kwd><kwd>тиреотропный гормон</kwd></kwd-group><kwd-group xml:lang="en"><kwd>infertility</kwd><kwd>assisted reproductive technologies</kwd><kwd>in vitro fertilization</kwd><kwd>thyroid stimulating hormone</kwd></kwd-group></article-meta></front><back><ref-list><title>References</title><ref id="cit1"><label>1</label><citation-alternatives><mixed-citation xml:lang="ru">Fazeli, P. 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