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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">ymj</journal-id><journal-title-group><journal-title xml:lang="ru">Якутский медицинский журнал</journal-title><trans-title-group xml:lang="en"><trans-title>Yakut Medical Journal</trans-title></trans-title-group></journal-title-group><issn pub-type="ppub">1813-1905</issn><issn pub-type="epub">2312-1017</issn><publisher><publisher-name>ЯНЦ КМП</publisher-name></publisher></journal-meta><article-meta><article-id pub-id-type="doi">10.25789/YMJ.2025.92.32</article-id><article-id custom-type="elpub" pub-id-type="custom">ymj-3048</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>СЛУЧАЙ ИЗ ПРАКТИКИ</subject></subj-group><subj-group subj-group-type="section-heading" xml:lang="en"><subject>CLINICAL CASE</subject></subj-group></article-categories><title-group><article-title>Клинический случай синдрома Фредерика: полная трехпучковая блокада на фоне фибрилляции предсердий</article-title><trans-title-group xml:lang="en"><trans-title>A case report of Frederick syndrome: complete trifascicular block with atrial fibrillation</trans-title></trans-title-group></title-group><contrib-group><contrib contrib-type="author" corresp="yes"><contrib-id contrib-id-type="orcid">https://orcid.org/0009-0002-1297-5035</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Ведерников</surname><given-names>А. А.</given-names></name><name name-style="western" xml:lang="en"><surname>Vedernikov</surname><given-names>A. A.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Ведерников Артем Андреевич – врач-кардиолог кардиологического отделения № 2.</p><p>625023, Тюмень, ул. Котовского, 55</p></bio><email xlink:type="simple">barterer55@yandex.ru</email><xref ref-type="aff" rid="aff-1"/></contrib><contrib contrib-type="author" corresp="yes"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0002-6086-4578</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Межонов</surname><given-names>Е. М.</given-names></name><name name-style="western" xml:lang="en"><surname>Mezhonov</surname><given-names>E. M.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Межонов Евгений Михайлович – д.м.н., проф. кафедры кардиологии и кардиохирургии с курсом скорой помощи Института клинической медицины ФГБОУ ВО «ТюмГМУ» Минздрава России; врач-кардиолог ГБУЗ ТО «ОКБ №1».</p><p>625023, Тюмень, ул. Одесская, 54; 625023, Тюмень, ул. Котовского, 55</p></bio><email xlink:type="simple">emmrus@mail.ru</email><xref ref-type="aff" rid="aff-2"/></contrib></contrib-group><aff xml:lang="ru" id="aff-1"><institution>ГБУЗ Тюменской области «Областная клиническая больница №1»</institution><country>Russian Federation</country></aff><aff xml:lang="ru" id="aff-2"><institution>ФГБОУ ВО «Тюменский государственный медицинский университет» Минздрава России; ГБУЗ ТО «Областная клиническая больница №1»</institution><country>Russian Federation</country></aff><pub-date pub-type="collection"><year>2025</year></pub-date><pub-date pub-type="epub"><day>30</day><month>12</month><year>2025</year></pub-date><volume>0</volume><issue>4</issue><fpage>144</fpage><lpage>147</lpage><permissions><copyright-statement>Copyright &amp;#x00A9; Ведерников А.А., Межонов Е.М., 2025</copyright-statement><copyright-year>2025</copyright-year><copyright-holder xml:lang="ru">Ведерников А.А., Межонов Е.М.</copyright-holder><copyright-holder xml:lang="en">Vedernikov A.A., Mezhonov E.M.</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://ymj.elpub.ru/jour/article/view/3048">https://ymj.elpub.ru/jour/article/view/3048</self-uri><abstract><p>В статье описывается клиническое наблюдение пациента с впервые диагностированным синдромом Фредерика, в данном случае представляющего собой сочетание постоянной фибрилляции предсердий и полной трифасцикулярной блокады, включающей проксимальную полную АВ-блокаду, передний гемиблок и полную блокаду правой ножки пучка Гиса. Также обсуждается возможный механизм развития данной патологии и проведенное лечение в клинике ГБУЗ Тюменской области «ОКБ№1».</p></abstract><trans-abstract xml:lang="en"><p>This article presents a clinical case of a patient with newly diagnosed Frederick's syndrome, in this case persistent atrial fibrillation and complete trifascicular block, including proximal complete AV block, anterior hemiblock, and complete right bundle branch block. The possible mechanism of development of this condition and the treatment provided at Regional Clinical Hospital No. 1 in Tyumen, Russian Federation, are discussed.</p></trans-abstract><kwd-group xml:lang="ru"><kwd>синдром Фредерика</kwd><kwd>электрокардиограмма</kwd><kwd>фибрилляция предсердий</kwd><kwd>трифасцикулярная блокада</kwd><kwd>полная блокада сердца</kwd><kwd>передний гемиблок</kwd><kwd>полная блокада правой ножки пучка Гиса</kwd></kwd-group><kwd-group xml:lang="en"><kwd>Frederick's syndrome</kwd><kwd>electrocardiogram</kwd><kwd>atrial fibrillation</kwd><kwd>trifascicular block</kwd><kwd>complete heart block</kwd><kwd>anterior hemiblock</kwd><kwd>complete right bundle branch block</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">Беннет Д.Х. Сердечные аритмии. М.: ГЭОТАР-Медиа, 2010. 440 с.</mixed-citation><mixed-citation xml:lang="en">Bennett DH. 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