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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">detinf</journal-id><journal-title-group><journal-title xml:lang="ru">ДЕТСКИЕ ИНФЕКЦИИ</journal-title><trans-title-group xml:lang="en"><trans-title>CHILDREN INFECTIONS</trans-title></trans-title-group></journal-title-group><issn pub-type="ppub">2072-8107</issn><issn pub-type="epub">2618-8139</issn><publisher><publisher-name>Association of Pediatricians and Infection Disease doctors</publisher-name></publisher></journal-meta><article-meta><article-id pub-id-type="doi">10.22627/2072-8107-2026-25-2-10-12</article-id><article-id custom-type="elpub" pub-id-type="custom">detinf-1186</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>К оценке некоторых факторов, предрасполагающих к «позднему» ацидозу недоношенных новорожденных детей</article-title><trans-title-group xml:lang="en"><trans-title>Assessment of certain factors predisposing to ‘late’ acidosis in premature newborns</trans-title></trans-title-group></title-group><contrib-group><contrib contrib-type="author" corresp="yes"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0002-0082-4005</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Дашичев</surname><given-names>К. В.</given-names></name><name name-style="western" xml:lang="en"><surname>Dashichev</surname><given-names>K. V.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Дашичев Кирилл Валерианович - к.м.н., доцент кафедры педиатрии №2.</p><p>Ярославль</p></bio><bio xml:lang="en"><p>Yaroslavl</p></bio><email xlink:type="simple">kirilld82@mail.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/0000-0002-9025-974X</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Ситникова</surname><given-names>Е. П.</given-names></name><name name-style="western" xml:lang="en"><surname>Olendar</surname><given-names>N. V.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Ситникова Елена Павловна - д.м.н., профессор, заведующая кафедрой педиатрии №2.</p><p>Ярославль</p></bio><bio xml:lang="en"><p>Yaroslavl</p></bio><email xlink:type="simple">sep.med@mail.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/0000-0001-6443-6549</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Олендарь</surname><given-names>Н. В.</given-names></name><name name-style="western" xml:lang="en"><surname>Sitnikova</surname><given-names>E. P.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Олендарь Наталья Владимировна - к.м.н., доцент кафедры педиатрии №2.</p><p>Ярославль</p></bio><bio xml:lang="en"><p>Yaroslavl</p></bio><email xlink:type="simple">nolendar@list.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/0000-0003-3523-5830</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Успенская</surname><given-names>Т. Л.</given-names></name><name name-style="western" xml:lang="en"><surname>Uspenskaya</surname><given-names>T. L.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Успенская Татьяна Львовна - к.м.н., доцент кафедры педиатрии №2.</p><p>Ярославль</p></bio><bio xml:lang="en"><p>Yaroslavl</p></bio><email xlink:type="simple">utatiana.l@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/0009-0009-3115-9333</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Шитова</surname><given-names>А. С.</given-names></name><name name-style="western" xml:lang="en"><surname>Shitova</surname><given-names>A. S.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Шитова Анна Сергеевна - ассистент кафедры педиатрии №2.</p><p>Ярославль</p></bio><bio xml:lang="en"><p>Yaroslavl</p></bio><email xlink:type="simple">an.shitova77@yandex.ru</email><xref ref-type="aff" rid="aff-1"/></contrib></contrib-group><aff-alternatives id="aff-1"><aff xml:lang="ru"><institution>Ярославский государственный медицинский университет Минздрава России</institution></aff><aff xml:lang="en"><institution>Yaroslavl State Medical University</institution></aff></aff-alternatives><pub-date pub-type="collection"><year>2026</year></pub-date><pub-date pub-type="epub"><day>03</day><month>07</month><year>2026</year></pub-date><volume>25</volume><issue>2</issue><fpage>10</fpage><lpage>12</lpage><permissions><copyright-statement>Copyright &amp;#x00A9; Дашичев К.В., Ситникова Е.П., Олендарь Н.В., Успенская Т.Л., Шитова А.С., 2026</copyright-statement><copyright-year>2026</copyright-year><copyright-holder xml:lang="ru">Дашичев К.В., Ситникова Е.П., Олендарь Н.В., Успенская Т.Л., Шитова А.С.</copyright-holder><copyright-holder xml:lang="en">Dashichev K.V., Olendar N.V., Sitnikova E.P., Uspenskaya T.L., Shitova A.S.</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://detinf.elpub.ru/jour/article/view/1186">https://detinf.elpub.ru/jour/article/view/1186</self-uri><abstract><sec><title>Цель</title><p>Цель: выяснить значение открытого овального окна в формировании гомеостаза недоношенных новорожденных детей.</p></sec><sec><title>Материалы</title><p>Материалы: в качестве основной группы были обследованы 58 недоношенных новорождённых с гестационным возрастом 28—36 недель и 20 здоровых доношенных — в качестве группы сравнения. Результаты: приводятся результаты определения ряда показателей гомеостаза и ультразвукового исследования фетальных коммуникаций у недоношенных новорожденных, не имевших сопутствующих тяжелых заболеваний. В позднем неонатальном периоде у недоношенных новорожденных нарастал дефицит оснований, предрасполагавший к «позднему» ацидозу. Одной из причин этого явления являлось низкое парциальное напряжение кислорода крови вследствие межпредсердного бидиректорального шунтирования через открытое овальное окно.</p></sec></abstract><trans-abstract xml:lang="en"><p>Research objective — to determine the significance of the open oval window in the formation of homeostasis in premature newborns. Materials: 58 premature newborns with a gestational age of 28—36 weeks were examined as the main group, and 20 healthy full-term newborns were examined as the comparison group. Results: The results of determining a number of homeostasis indicators and ultrasound examination of foetal communications in premature newborns without concomitant severe diseases are presented. In the late neonatal period, profoundly premature newborns developed a growing base deficit, predisposing them to ‘late’ acidosis. One of the reasons for this phenomenon was low partial oxygen tension in the blood due to bidirectional atrial shunting through the patent foramen ovale.</p></trans-abstract><kwd-group xml:lang="ru"><kwd>недоношенные новорожденные дети</kwd><kwd>гомеостаз</kwd></kwd-group><kwd-group xml:lang="en"><kwd>premature infants</kwd><kwd>homeostasis</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">Morgan JL, Nelson DB, Casey BM, Bloom SL, McIntire DD, Leveno KJ. 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