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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">nefr</journal-id><journal-title-group><journal-title xml:lang="ru">Нефрология</journal-title><trans-title-group xml:lang="en"><trans-title>Nephrology (Saint-Petersburg)</trans-title></trans-title-group></journal-title-group><issn pub-type="ppub">1561-6274</issn><issn pub-type="epub">2541-9439</issn><publisher><publisher-name>Pavlov First Saint-Petersburg State Medical University</publisher-name></publisher></journal-meta><article-meta><article-id pub-id-type="doi">10.36485/1561-6274-2022-26-4-89-96</article-id><article-id custom-type="elpub" pub-id-type="custom">nefr-2165</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. КЛИНИЧЕСКИЕ ИССЛЕДОВАНИЯ</subject></subj-group><subj-group subj-group-type="section-heading" xml:lang="en"><subject>ORIGINAL ARTICLES. CLINICAL INVESTIGATIONS</subject></subj-group></article-categories><title-group><article-title>Функциональное состояние почек в неонатальном периоде у детей с очень низкой и экстремально низкой массой тела</article-title><trans-title-group xml:lang="en"><trans-title>Functional state of the kidneys in the neonatal period in children with very low and extremely low body weight</trans-title></trans-title-group></title-group><contrib-group><contrib contrib-type="author" corresp="yes"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0001-5859-7717</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Коротаева</surname><given-names>Н. В.</given-names></name><name name-style="western" xml:lang="en"><surname>Korotaeva</surname><given-names>N. V.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Коротаева Наталья Владимировна, доц.канд. мед. наук, врач-неонатолог</p><p>Отделение патологии новорожденных и недоношенных детей</p><p>394066</p><p>Московский пр, д. 151</p><p>г. Воронеж</p><p>кафедра неонатологии и педиатрии</p><p>394036</p><p>ул. Студенческая, д. 10.</p><p>г. Воронеж</p><p>тел.: (903)653-09-08</p></bio><bio xml:lang="en"><p>Natalya V. Korotaeva, Associate professor, MD, PhD, DMedSci</p><p>Department of pathology of newborns and premature babies, neonatologist</p><p>394066</p><p>Moskovsky prospect, 151</p><p>Voronezh;</p><p>Department of Neonatology and Pediatrics</p><p>394036</p><p>st. Student, d. 10</p><p>Voronezh</p><p>tel: (903) 653-09-08</p></bio><email xlink:type="simple">korotaeva.nv@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/0000-0001-6096-1784</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Настаушева</surname><given-names>Т. Л.</given-names></name><name name-style="western" xml:lang="en"><surname>Nastausheva</surname><given-names>T. L.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Настаушева Татьяна Леонидовна, проф., д-р мед. наук</p><p>кафедра госпитальной педиатрии</p><p>394036</p><p>ул. Студенческая, д. 10.</p><p>г. Воронеж</p><p>тел.: (473) 237-27-46</p></bio><bio xml:lang="en"><p>Tatyana L. Nastausheva, Professor, MD, PhD, DMedSci</p><p>Department of Hospital Pediatrics</p><p>394036</p><p>st. Student, d. 10</p><p>Voronezh</p><p>tel.: (473) 237-27-46</p></bio><email xlink:type="simple">nastat53@mail.ru</email><xref ref-type="aff" rid="aff-2"/></contrib><contrib contrib-type="author" corresp="yes"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0001-7076-0484</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Ипполитова</surname><given-names>Л. И.</given-names></name><name name-style="western" xml:lang="en"><surname>Ippolitova</surname><given-names>L. I.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Ипполитова Людмила Ивановна, проф., д-р мед. наук, зав. кафедрой</p><p>кафедра неонатологии и педиатрии</p><p>394036</p><p>ул. Студенческая, д. 10</p><p>г. Воронеж</p><p>тел.: (473)237-27-46</p></bio><bio xml:lang="en"><p>Lyudmila I. Ippolitova, Professor, MD, PhD, DMedSci, head. department</p><p>Department of Neonatology and Pediatrics</p><p>394036</p><p>st. Student, d. 10</p><p>Voronezh</p><p>tel.: (473) 237-27-46</p></bio><email xlink:type="simple">liippolitova@okb-vrn.ru</email><xref ref-type="aff" rid="aff-3"/></contrib></contrib-group><aff-alternatives id="aff-1"><aff xml:lang="ru"><institution>Воронежский государственный медицинский университет им. Н.Н. Бурденко; Воронежская областная клиническая больница №1 «Перинатальный центр»</institution><country>Россия</country></aff><aff xml:lang="en"><institution>Voronezh State Medical University. N. N. Burdenko;  Voronezh Regional Clinical Hospital №1, "Perinatal Center"</institution><country>Russian Federation</country></aff></aff-alternatives><aff-alternatives id="aff-2"><aff xml:lang="ru"><institution>Воронежский государственный медицинский университет им. Н. Н. Бурденко</institution><country>Россия</country></aff><aff xml:lang="en"><institution>Voronezh State Medical University. N. N. Burdenko</institution><country>Russian Federation</country></aff></aff-alternatives><aff-alternatives id="aff-3"><aff xml:lang="ru"><institution>Воронежский государственный медицинский университет им. Н.Н. Бурденко</institution><country>Россия</country></aff><aff xml:lang="en"><institution>Voronezh State Medical University. N. N. Burdenko</institution><country>Russian Federation</country></aff></aff-alternatives><pub-date pub-type="collection"><year>2022</year></pub-date><pub-date pub-type="epub"><day>24</day><month>11</month><year>2022</year></pub-date><volume>26</volume><issue>4</issue><fpage>89</fpage><lpage>96</lpage><permissions><copyright-statement>Copyright &amp;#x00A9; Коротаева Н.В., Настаушева Т.Л., Ипполитова Л.И., 2022</copyright-statement><copyright-year>2022</copyright-year><copyright-holder xml:lang="ru">Коротаева Н.В., Настаушева Т.Л., Ипполитова Л.И.</copyright-holder><copyright-holder xml:lang="en">Korotaeva N.V., Nastausheva T.L., Ippolitova L.I.</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://journal.nephrolog.ru/jour/article/view/2165">https://journal.nephrolog.ru/jour/article/view/2165</self-uri><abstract><p>ВВЕДЕНИЕ. Преждевременные роды все еще связаны с повышенным риском заболеваемости и смертности новорожденных в раннем неонатальном периоде. Существуют убедительные данные, демонстрирующие связь между уменьшением количества нефронов у недоношенных детей и увеличением артериального давления, риска развития хронической болезни почек, что, несомненно, негативно сказывается на качестве жизни. ЦЕЛЬ: оценить функциональное состояние почек у детей с очень низкой (ОНМТ) и экстремально низкой массой тела (ЭНМТ) в первые 8 нед постнатальной жизни. ПАЦИЕНТЫ И МЕТОДЫ. В исследовании приняли участие 134 новорожденных менее 37 нед гестации, которые были разделены на три группы в зависимости от массы при рождении. В качестве параметров оценки учитывались уровни поступления белка и жидкости, концентрации креатинина в сыворотке крови, СКФ по Schwartz. В качестве статистических методов использовался язык программирования Python, т-тесты, тесты Шапиро–Вилка и д’Агостино. Для интерпретации значения p тестов проверка на нормальность выбран пороговый уровень 0,05. РЕЗУЛЬТАТЫ. Не было выявлено различий в количестве белка, получаемого недоношенными в исследуемых группах как в первую неделю, так и последующие 2–8 нед жизни. Средний уровень потребляемой жидкости в первую неделю постнатальной жизни увеличивался от 1-х до 7-х суток во всех исследовательских группах. Имела место тенденция к более значительному снижению уровня креатинина сыворотки крови у детей, рожденных с большей массой. Анализируя уровень СКФ в исследуемых группах, отмечается четкая картина прогрессивного ее увеличения. ЗАКЛЮЧЕНИЕ. Установлены значения диуреза, уровня креатинина и СКФ у недоношенных детей с массой тела при рождении менее 1500 г в первые 2 мес жизни, что может быть использовано в практике для сравнения при исследовании различной патологии.</p></abstract><trans-abstract xml:lang="en"><p>BACKGROUND. Preterm birth is still associated with an increased risk of neonatal morbidity and mortality in the early neonatal period. There is strong evidence demonstrating an association between a decrease in the number of nephrons in preterm infants and an increase in blood pressure, the risk of developing chronic kidney disease, which undoubtedly negatively affects the quality of life. THE AIM: to assess the functional state of the kidneys in children with very low (VLBW) and extremely low body weight (ELBW) in the first 8 weeks of postnatal life. PATIENTS AND METHODS. The study involved 134 newborns less than 37 weeks of gestation, who were divided into three groups depending on birth weight. The levels of protein and fluid intake, serum creatinine concentration, GFR according to Schwartz were taken into account as evaluation parameters. The Python programming language, t-tests, ShapiroWilk and d'Agostino tests were used as statistical methods. A threshold level of 0.05 was chosen to interpret the value of p tests for normality testing. RESULTS. There were no differences in the amount of protein received by preterm infants in the study groups both in the first week and subsequent 2–8 weeks of life. The average level of incoming fluid in the first week of postnatal life increased from 1 to 7 days in all study groups. There was a trend towards a more significant decrease in serum creatinine in children born with a larger birth weight. Analyzing the level of glomerular filtration rate in the studied groups, there is a clear picture of a progressive increase in the rate with age. CONCLUSION. The values of diuresis, creatinine level and GFR in premature babies with birth weight less than 1500 grams in the first 2 months of life have been established, which can be used in practice for comparison in the study of various pathologies.</p></trans-abstract><kwd-group xml:lang="ru"><kwd>недоношенные дети</kwd><kwd>нефрогенез</kwd><kwd>скорость клубочковой фильтрации</kwd><kwd>креатинин</kwd><kwd>диурез</kwd><kwd>очень низкая масса тела</kwd><kwd>экстремально низкая масса тела</kwd></kwd-group><kwd-group xml:lang="en"><kwd>premature babies</kwd><kwd>nephrogenesis</kwd><kwd>glomerular filtration rate</kwd><kwd>creatinine</kwd><kwd>diuresis</kwd><kwd>very low body weight</kwd><kwd>extremely low body weight</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">Иванов ДО, Савенкова НД. Острое повреждение почек у новорожденных детей: классификация, этиология и эпидемиология. 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