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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">perinatology</journal-id><journal-title-group><journal-title xml:lang="ru">Российский вестник перинатологии и педиатрии</journal-title><trans-title-group xml:lang="en"><trans-title>Rossiyskiy Vestnik Perinatologii i Pediatrii (Russian Bulletin of Perinatology and Pediatrics)</trans-title></trans-title-group></journal-title-group><issn pub-type="ppub">1027-4065</issn><issn pub-type="epub">2500-2228</issn><publisher><publisher-name>Ltd. “The National Academy of Pediatric Science and Innovation”</publisher-name></publisher></journal-meta><article-meta><article-id pub-id-type="doi">10.21508/1027-4065-2025-70-2-38-44</article-id><article-id custom-type="elpub" pub-id-type="custom">perinatology-2183</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>ОРИГИНАЛЬНЫЕ СТАТЬИ</subject></subj-group><subj-group subj-group-type="section-heading" xml:lang="en"><subject>ORIGINAL ARTICLES</subject></subj-group></article-categories><title-group><article-title>Значение антикардиальных аутоантител у детей с брадиаритмиями</article-title><trans-title-group xml:lang="en"><trans-title>The significance of anticardiac autoantibodies in children with bradyarrhythmias</trans-title></trans-title-group></title-group><contrib-group><contrib contrib-type="author" corresp="yes"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0001-6028-1156</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Полякова</surname><given-names>Е. Б.</given-names></name><name name-style="western" xml:lang="en"><surname>Polyakova</surname><given-names>E. B.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Полякова Екатерина Борисовна — к.м.н., ст. науч. сотр. отдела детской кардиологии и аритмологии  </p><p>125412 Москва, ул. Талдомская, д. 2 </p></bio><bio xml:lang="en"><p>Moscow </p></bio><xref ref-type="aff" rid="aff-1"/></contrib></contrib-group><aff-alternatives id="aff-1"><aff xml:lang="ru"><institution>ОСП «Научно-исследовательский клинический институт педиатрии и детской хирургии им. академика Ю.Е. Вельтищева» ФГАОУ ВО РНИМУ им. Н.И. Пирогова Минздрава России</institution><country>Россия</country></aff><aff xml:lang="en"><institution>Veltischev Research and Clinical Institute for pediatrics and pediatric surgery at the Pirogov Russian National Research Medical University</institution><country>Russian Federation</country></aff></aff-alternatives><pub-date pub-type="collection"><year>2025</year></pub-date><pub-date pub-type="epub"><day>14</day><month>05</month><year>2025</year></pub-date><volume>70</volume><issue>2</issue><fpage>38</fpage><lpage>44</lpage><permissions><copyright-statement>Copyright &amp;#x00A9; Ltd. “The National Academy of Pediatric Science and Innovation”, 2025</copyright-statement><copyright-year>2025</copyright-year><copyright-holder xml:lang="ru">Ltd. “The National Academy of Pediatric Science and Innovation”</copyright-holder><copyright-holder xml:lang="en">Ltd. “The National Academy of Pediatric Science and Innovation”</copyright-holder><license xlink:href="https://www.ped-perinatology.ru/jour/about/submissions#copyrightNotice" xlink:type="simple"><license-p>https://www.ped-perinatology.ru/jour/about/submissions#copyrightNotice</license-p></license></permissions><self-uri xlink:href="https://www.ped-perinatology.ru/jour/article/view/2183">https://www.ped-perinatology.ru/jour/article/view/2183</self-uri><abstract><p>Значение аутоиммунных механизмов в патогенезе нарушений сердечного ритма и проводимости у детей остается малоизученным, до конца не определено прогностическое значение изменения уровня антикардиальных антител к различным структурам миокарда у детей с брадиаритмиями. В работе представлены данные 105 детей с результатами кардиологического обследования и анализа на содержание антикардиальных антител. Выявлено, что повышенные и высокие уровни антикардиальных антител выявляются в 50% случаев у детей с брадиаритмиями, титр антител к проводящей системе сердца 1:160 регистрировался у 22% детей, а 1:320 и выше — у 18% детей. У детей с синдромом слабости синусного узла и атриовентрикулярными блокадами повышенные и высокие титры антикардиальных антител ассоциированы с замедлением электрической систолы желудочков и тенденцией к снижению сократительной способности сердца.</p></abstract><trans-abstract xml:lang="en"><p>The significance of autoimmune mechanisms in the pathogenesis of cardiac arrhythmias and conduction disorders in children remains poorly understood, the prognostic significance of changes of the prognostic significance antibodies level to different myocardial structures in children with bradyarrhythmias has not been fully determined. This study presents data from 105 children who underwent cardiological examination and analysis of anticardiac antibody levels. It was found that, that elevated and high levels of anticardiac antibodies are detected in 50% among children with bradyarrhythmias, the antibody titer to the cardiac conduction system 1:160 was registered in 22% of children, and 1:320 and higher — in 18% of children. Elevated and high titers of anticardiac antibodyies are associated with delay of the electrical systole of the ventricles and a tendency to decrease the contractility of the heart.</p></trans-abstract><kwd-group xml:lang="ru"><kwd>дети</kwd><kwd>антикардиальные антитела</kwd><kwd>брадиаритмии</kwd></kwd-group><kwd-group xml:lang="en"><kwd>children</kwd><kwd>anticardiac antibodies</kwd><kwd>bradyarrhythmia</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">Maisch B., Lotze U., Schneider J., Kochsiek К. Antibodies to human atnoventricular node and conducting tissue in atrioventricular block. In Santini M., Pislolese M., Alliegro A., et al. Progress in clinical pacing. Rome CEPI-Verlag, 1988; 163–171.</mixed-citation><mixed-citation xml:lang="en">Maisch B., Lotze U., Schneider J., Kochsiek К. 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