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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">10.21508/1027-4065-2025-70-4-65-72</article-id><article-id custom-type="elpub" pub-id-type="custom">perinatology-2234</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>Формула CKiD U25 для расчета скорости клубочковой фильтрации у подростков</article-title><trans-title-group xml:lang="en"><trans-title>CKiD U25 equation for calculating glomerular filtration rate in adolescents</trans-title></trans-title-group></title-group><contrib-group><contrib contrib-type="author" corresp="yes"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0001-9880-1188</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Кулакова</surname><given-names>Е. Н.</given-names></name><name name-style="western" xml:lang="en"><surname>Kulakova</surname><given-names>E. N.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Кулакова Елена Николаевна — к.м.н., доцент кафедры госпитальной педиатрии; доцент кафедры клинических дисциплин </p><p>394036, г. Воронеж, ул. Студенческая, д.10</p></bio><bio xml:lang="en"><p>394036, Voronezh</p></bio><xref ref-type="aff" rid="aff-1"/></contrib></contrib-group><aff-alternatives id="aff-1"><aff xml:lang="ru"><institution>ФГБОУ ВО «Воронежский государственный медицинский университет им. Н.Н. Бурденко» Минздрава России; Ошский государственный университет</institution><country>Россия</country></aff><aff xml:lang="en"><institution>N.N. Burdenko Voronezh State 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>28</day><month>08</month><year>2025</year></pub-date><volume>70</volume><issue>4</issue><elocation-id>65–72</elocation-id><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/2234">https://www.ped-perinatology.ru/jour/article/view/2234</self-uri><abstract><p>В клинических практических рекомендациях KDIGO 2024 по диагностике и ведению хронической болезни почек для расчета скорости клубочковой фильтрации у детей и подростков представлены три валидированные формулы: CKiD U25, EFKC и CKD-EPI40.</p><sec><title>Цель работы</title><p>Цель работы. Определить клиническое значение применения формулы CKiD U25 вместо формулы Шварцаbed для расчета скорости клубочковой фильтрации у подростков.</p></sec><sec><title>Материалы и методы</title><p>Материалы и методы. Проведено одноцентровое одномоментное (cross-sectional) исследование на основе данных 10-летнего регионального реестра 17-летних подростков. Скорость клубочковой фильтрации рассчитывалась по формулам Шварцаbed, CKiD U25 и CKD-EPI.</p></sec><sec><title>Результаты</title><p>Результаты. Скорость клубочковой фильтрации у 17–летних подростков по формуле CKiD U25 и формуле Шварцаbed составила 94 [81,5; 107] и 85 [75; 99] мл/мин/1,73 м2 соответственно. При расчете по CKiD U25 показатель увеличился у лиц мужского пола (медиана различий 16,3 мл/мин/1,73 м2) и уменьшился у лиц женского пола (медиана различий 0,7 мл/ мин/1,73 м2). Это привело к изменению категории скорости клубочковой фильтрации (С1–С5) у 44,7% (208/465) мальчиков и 2,6% (11/428) девочек. Использование формулы CKiD U25 (вместо формулы Шварцаbed) уменьшило различия расчетной скорости клубочковой фильтрации при переходе на формулу CKD-EPI у пациентов мужского пола (с 36,8 до 19,4 мл/ мин/1,73 м2) и увеличило у пациентов женского пола (с 21,9 до 22,95 мл/мин/1,73 м2). При переходе в 18 лет с формулы Шварцаbed на формулу CKD-EPI категория скорости клубочковой фильтрации (С1–С5) изменилась у 55,8% (498/893) пациентов; при переходе с формулы CKiD U25 на CKD-EPI — у 33,9% (303/893) пациентов. Сравнение расчета по формулам CKiD U25 и CKD-EPI на возраст 25 лет выявило различия категории (С1–С5) у 25,8% (230/893) пациентов.</p></sec><sec><title>Выводы</title><p>Выводы. Использование формулы CKiD U25 вместо формулы Шварцаbed у 17-летних подростков приводит к клинически значимому изменению расчетной скорости клубочковой фильтрации только у лиц мужского пола. Преимуществом этой формулы является снижение риска определения иной категории скорости клубочковой фильтрации (С1–С5) у пациентов после перехода в систему здравоохранения для взрослых, где используется формула CKD-EPI</p></sec></abstract><trans-abstract xml:lang="en"><p>The KDIGO 2024 Clinical Practice Guideline for the Evaluation and Management of Chronic Kidney Disease presents three validated equations for estimating glomerular filtration rate in children and adolescents: CKiD U25, EFKC, and CKD-EPI40. Study objective. Determine the clinical significance of using the CKiD U25 equation instead of the Bedside Schwartz equation to calculate glomerular filtration rate in adolescents.</p><sec><title>Materials and methods</title><p>Materials and methods. Single-center, cross-sectional study based on a 10–year regional register of 17–year-olds. Glomerular filtration rate was calculated using the Bedside Schwartz, CKiD U25 and CKD-EPI equations.</p></sec><sec><title>Results</title><p>Results. Calculating glomerular filtration rate for 17–year-olds using the CKiD U25 and Bedside Schwartz equations yielded the following results: 94 [81.5; 107] and 85 [75; 99] ml/min/1.73 m2, respectively. The median of differences was +16.3 ml/min/1.73 m2 for males and —0.7 ml/min/1.73 m2 for females. These differences resulted in a change in the glomerular filtration rate category for 44.7% (208/465) boys and 2.6% (11/428) girls. Using the CKiD U25 equation decreased estimated glomerular filtration rate differences during the switch to CKD-EPI in males from 36.8 to 19.4 ml/min/1.73 m2 and increased them in females from 21.9 to 22.95 ml/min/1.73 m2. When switching from the Bedside Schwartz equation to the CKD-EPI equation at the age of 18, the glomerular filtration rate category changed for 55.8% (498/893) patients; from the CKiD U25 equation to the CKD-EPI equation for 33.9% (303/893) patients. Comparison of glomerular filtration rate based on CKiD U25 and CKD-EPI equations at age 25 years revealed differences in the glomerular filtration rate category in 25.8% (230/893) of patients.</p></sec><sec><title>Conclusions</title><p>Conclusions. Using the CKiD U25 equation instead of the Bedside Schwartz equation in 17–year-olds leads to a clinically significant change in estimated glomerular filtration rate only in males. The advantage of this equation is that it reduces the risk of misclassification of glomerular filtration rate category (G1–G5) for patients transitioning to an adult healthcare system that uses the CKD-EPI equation.</p></sec></trans-abstract><kwd-group xml:lang="ru"><kwd>скорость клубочковой фильтрации</kwd><kwd>подростки</kwd><kwd>хроническая болезнь почек</kwd><kwd>CKiD U25</kwd></kwd-group><kwd-group xml:lang="en"><kwd>glomerular filtration rate</kwd><kwd>adolescents</kwd><kwd>chronic kidney disease</kwd><kwd>CKiD U25</kwd></kwd-group><funding-group><funding-statement xml:lang="ru">Выражаю искреннюю благодарность организаторам и участникам Круглого стола «Скорость клубочковой фильтрации. Вопросы и ответы», который был проведен 20.09.2023 г. в рамках XXII Российского конгресса «Инновационные технологии в педиатрии и детской хирургии», за помощь в разработке новых подходов к анализу регионального реестра.</funding-statement><funding-statement xml:lang="en">I would like to express my sincere gratitude to the organizers and participants of the roundtable discussion “Glomerular  Filtration Rate: Questions and Answers”, held on September  20, 2023, during the XXII Russian Congress “Innovative  Technologies in Pediatrics and Pediatric Surgery”.  Their valuable insights helped shape new approaches to analyzing the regional registry.</funding-statement></funding-group></article-meta></front><back><ref-list><title>References</title><ref id="cit1"><label>1</label><citation-alternatives><mixed-citation xml:lang="ru">Союз педиатров России, Творческое объединение детских нефрологов, Российское трансплантологическое общество. Клинические Рекомендации “Хроническая Болезнь Почек”. 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