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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">10.21508/1027-4065-2024-69-1-66-73</article-id><article-id custom-type="elpub" pub-id-type="custom">perinatology-1940</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>«Маски» лихорадки неясного генеза у детей</article-title><trans-title-group xml:lang="en"><trans-title>“Masks” of fever of unknown origin in children</trans-title></trans-title-group></title-group><contrib-group><contrib contrib-type="author" corresp="yes"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0002-9001-1437</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Файзуллина</surname><given-names>Р. М.</given-names></name><name name-style="western" xml:lang="en"><surname>Fayzullina</surname><given-names>R. M.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Резеда Мансафовна Файзуллина, д. м. н., проф.</p><p>кафедры факультетской педиатрии с курсами педиатрии, неонатологии и симуляционным центром ИДПО</p><p>450008</p><p>ул. Ленина, д. 3</p><p>Уфа</p></bio><bio xml:lang="en"><p>Ufa</p></bio><email xlink:type="simple">fayzyullina@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/0000-0003-3415-0595</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Самигуллина</surname><given-names>Н. В.</given-names></name><name name-style="western" xml:lang="en"><surname>Samigullina</surname><given-names>N. V.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Наталья Владимировна Самигуллина, к. м. н., доцент, рук. центра</p><p>кафедра факультетской педиатрии с курсами педиатрии, неонатологии и симуляционным центром ИДПО</p><p>Консультативно-диагностический центр для детей</p><p>450106</p><p>ул. Батырская, д. 39/2</p><p>Уфа</p></bio><bio xml:lang="en"><p>Ufa</p></bio><email xlink:type="simple">samigullinanw@gmail.com</email><xref ref-type="aff" rid="aff-2"/></contrib><contrib contrib-type="author" corresp="yes"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0001-5260-2319</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Викторов</surname><given-names>В. В.</given-names></name><name name-style="western" xml:lang="en"><surname>Victorov</surname><given-names>V. V.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Виталий Васильевич Викторов, д. м. н., профессор</p><p>кафедра факультетской педиатрии с курсами педиатрии, неонатологии и симуляционным центром ИДПО</p><p>450008</p><p>ул. Ленина, д. 3</p><p>Уфа</p></bio><bio xml:lang="en"><p>Ufa</p></bio><email xlink:type="simple">surgped@mail.ru</email><xref ref-type="aff" rid="aff-1"/></contrib></contrib-group><aff-alternatives id="aff-1"><aff xml:lang="ru"><institution>ФГБОУ ВО «Башкирский государственный медицинский университет» Минздрава России</institution><country>Россия</country></aff><aff xml:lang="en"><institution>Bashkir State Medical University</institution><country>Russian Federation</country></aff></aff-alternatives><aff-alternatives id="aff-2"><aff xml:lang="ru"><institution>ФГБОУ ВО «Башкирский государственный медицинский университет» Минздрава России; ГБУЗ Республики Башкортостан «Клиническая больница скорой медицинской помощи города Уфы»</institution><country>Россия</country></aff><aff xml:lang="en"><institution>Bashkir State Medical University; Clinical Emergency Hospital</institution><country>Russian Federation</country></aff></aff-alternatives><pub-date pub-type="collection"><year>2024</year></pub-date><pub-date pub-type="epub"><day>08</day><month>03</month><year>2024</year></pub-date><volume>69</volume><issue>1</issue><fpage>66</fpage><lpage>73</lpage><permissions><copyright-statement>Copyright &amp;#x00A9; Ltd. “The National Academy of Pediatric Science and Innovation”, 2024</copyright-statement><copyright-year>2024</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/1940">https://www.ped-perinatology.ru/jour/article/view/1940</self-uri><abstract><p>   В статье приведен анализ случаев госпитализированных детей с лихорадкой неясного генеза.</p><sec><title>   Цель</title><p>   Цель: изучение нозологической структуры причин лихорадки неясного генеза у госпитализированных детей.</p></sec><sec><title>   Материал и методы</title><p>   Материал и методы. Проведен ретроспективный анализ историй болезни детей, госпитализированных в педиатрическое отделение в 2022–2023 гг. Всем детям проводилось комплексное лабораторно-инструментальное обследование.</p></sec><sec><title>   Результаты</title><p>   Результаты. Наибольшую долю (43,9 %) составили дети школьного возраста, имевшие помимо лихорадки жалобы на слабость (87,8 %) и снижение аппетита (85,4 %). В результате обследования чаще всего регистрировалась анемия (51,2 %), ускорение СОЭ (47,6 %) и увеличение С-реактивного белка (45,1 %). Причинами лихорадки неясного генеза у 65,9 % детей являлись инфекционные заболевания, у 19,5 % — синдром вегетативной дисфункции с нарушением терморегуляции, у 6,1 % — системные заболевания соединительной ткани, у 4,9 % — онкологическая патология, у 2,4 % — воспалительные заболевания желудочно-кишечного тракта.</p></sec><sec><title>   Заключение</title><p>   Заключение. Результаты исследования могут быть применены в педиатрической практике, наблюдении за детьми с инфекционной патологией.</p></sec></abstract><trans-abstract xml:lang="en"><p>   The article presents an analysis of cases of hospitalized children with fever of unknown origin. Purpose: to study the nosological structure of the causes of fever of unknown genesis in hospitalized children.</p><sec><title>   Material and methods</title><p>   Material and methods: a retrospective analysis of the medical histories of children hospitalized in the pediatric department was carried out for 2022–2023. All children underwent a comprehensive laboratory and instrumental examination.</p></sec><sec><title>   Results</title><p>   Results: the largest proportion (43,9 %) were school-age children who, in addition to fever, had complaints of weakness (87,8 %) and decreased appetite (85,4 %). Anemia (51,2 %), acceleration of ESR (47,6 %) and an increase in C-reactive protein (45,1 %) were most often recorded in the analyses. The causes of fever of unknown origin in 65,9 % of children were infectious diseases, in 19,5 % — autonomic dysfunction syndrome with a violation of thermoregulation, in 6,1 % — systemic connective tissue diseases, in 4,9 % — oncological pathology, in 2,4 % — inflammatory diseases of the gastrointestinal tract.</p><p>   The results of the study can be applied in pediatric practice, monitoring of children with infectious pathology.</p></sec></trans-abstract><kwd-group xml:lang="ru"><kwd>дети</kwd><kwd>лихорадка неясного генеза</kwd><kwd>вирусные инфекции</kwd></kwd-group><kwd-group xml:lang="en"><kwd>children</kwd><kwd>fever of unknown origin</kwd><kwd>viral infections</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">Довнар-Запольская О.Н. 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