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<article 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" xmlns:ali="http://www.niso.org/schemas/ali/1.0/" article-type="research-article" dtd-version="1.2" xml:lang="en"><front><journal-meta><journal-id journal-id-type="publisher-id">Clinical nutrition and metabolism</journal-id><journal-title-group><journal-title xml:lang="en">Clinical nutrition and metabolism</journal-title><trans-title-group xml:lang="ru"><trans-title>Клиническое питание и метаболизм</trans-title></trans-title-group></journal-title-group><issn publication-format="print">2658-4433</issn><issn publication-format="electronic">2782-2974</issn><publisher><publisher-name xml:lang="en">Eco-Vector</publisher-name></publisher></journal-meta><article-meta><article-id pub-id-type="publisher-id">641972</article-id><article-id pub-id-type="doi">10.17816/clinutr641972</article-id><article-id pub-id-type="edn">RWBMEH</article-id><article-categories><subj-group subj-group-type="toc-heading" xml:lang="en"><subject>Original Study Articles</subject></subj-group><subj-group subj-group-type="toc-heading" xml:lang="ru"><subject>Оригинальные исследования</subject></subj-group><subj-group subj-group-type="article-type"><subject>Research Article</subject></subj-group></article-categories><title-group><article-title xml:lang="en">Water-Electrolyte Disturbances in Patients With Severe Ischemic Stroke</article-title><trans-title-group xml:lang="ru"><trans-title>Нарушения водно-электролитного гомеостаза у больных с тяжёлым ишемическим инсультом</trans-title></trans-title-group></title-group><contrib-group><contrib contrib-type="author"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0003-4975-9336</contrib-id><contrib-id contrib-id-type="spin">6465-2938</contrib-id><name-alternatives><name xml:lang="en"><surname>Nazarov</surname><given-names>Aleksandr M.</given-names></name><name xml:lang="ru"><surname>Назаров</surname><given-names>Александр Михайлович</given-names></name></name-alternatives><address><country country="RU">Russian Federation</country></address><bio xml:lang="en"><p>MD, Cand. Sci. (Medicine), Assistant Professor</p></bio><bio xml:lang="ru"><p>кандидат медицинских наук, доцент</p></bio><email>a.m.nazarow@yandex.ru</email><xref ref-type="aff" rid="aff1"/></contrib><contrib contrib-type="author"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0003-4368-832X</contrib-id><contrib-id contrib-id-type="spin">6604-3149</contrib-id><name-alternatives><name xml:lang="en"><surname>Chirkov</surname><given-names>Aleksandr N.</given-names></name><name xml:lang="ru"><surname>Чирков</surname><given-names>Александр Николаевич</given-names></name></name-alternatives><address><country country="RU">Russian Federation</country></address><bio xml:lang="en"><p>MD, Cand. Sci. (Medicine), Assistant Lecturer</p></bio><bio xml:lang="ru"><p>кандидат медицинских наук, ассистент</p></bio><email>log82@mail.ru</email><xref ref-type="aff" rid="aff1"/></contrib><contrib contrib-type="author"><contrib-id contrib-id-type="orcid">https://orcid.org/0009-0002-3558-0642</contrib-id><name-alternatives><name xml:lang="en"><surname>Yunusov</surname><given-names>Ramil T.</given-names></name><name xml:lang="ru"><surname>Юнусов</surname><given-names>Рамиль Талгатович</given-names></name></name-alternatives><address><country country="RU">Russian Federation</country></address><bio xml:lang="en"><p>Assistant Lecturer</p></bio><bio xml:lang="ru"><p>ассистент</p></bio><email>ramon19i8888@gmail.com</email><xref ref-type="aff" rid="aff1"/></contrib><contrib contrib-type="author"><contrib-id contrib-id-type="orcid">https://orcid.org/0009-0009-5098-5913</contrib-id><name-alternatives><name xml:lang="en"><surname>Ibragimova</surname><given-names>Salima D.</given-names></name><name xml:lang="ru"><surname>Ибрагимова</surname><given-names>Селима Даудовна</given-names></name></name-alternatives><address><country country="RU">Russian Federation</country></address><bio xml:lang="en"><p>resident</p></bio><bio xml:lang="ru"><p>ординатор</p></bio><email>miss.selima@yandex.ru</email><xref ref-type="aff" rid="aff1"/></contrib></contrib-group><aff-alternatives id="aff1"><aff><institution xml:lang="en">Orenburg State Medical University</institution></aff><aff><institution xml:lang="ru">Оренбургский государственный медицинский университет</institution></aff></aff-alternatives><pub-date date-type="preprint" iso-8601-date="2025-04-10" publication-format="electronic"><day>10</day><month>04</month><year>2025</year></pub-date><pub-date date-type="pub" iso-8601-date="2024-06-02" publication-format="electronic"><day>02</day><month>06</month><year>2024</year></pub-date><volume>5</volume><issue>3</issue><issue-title xml:lang="en"/><issue-title xml:lang="ru"/><fpage>97</fpage><lpage>104</lpage><history><date date-type="received" iso-8601-date="2024-11-16"><day>16</day><month>11</month><year>2024</year></date><date date-type="accepted" iso-8601-date="2025-02-20"><day>20</day><month>02</month><year>2025</year></date></history><permissions><copyright-statement xml:lang="en">Copyright ©; 2024, Eco-Vector</copyright-statement><copyright-statement xml:lang="ru">Copyright ©; 2024, Эко-Вектор</copyright-statement><copyright-year>2024</copyright-year><copyright-holder xml:lang="en">Eco-Vector</copyright-holder><copyright-holder xml:lang="ru">Эко-Вектор</copyright-holder><ali:free_to_read xmlns:ali="http://www.niso.org/schemas/ali/1.0/"/><license><ali:license_ref xmlns:ali="http://www.niso.org/schemas/ali/1.0/">https://creativecommons.org/licenses/by-nc-nd/4.0</ali:license_ref></license></permissions><self-uri xlink:href="https://journals.eco-vector.com/2658-4433/article/view/641972">https://journals.eco-vector.com/2658-4433/article/view/641972</self-uri><abstract xml:lang="en"><p><bold><italic>BACKGROUND</italic></bold><bold><italic>: </italic></bold>Elevated plasma osmolality is recognized as a predictor of mortality in cardiovascular diseases, including stroke; however, the association between plasma hyperosmolality and mortality in severe acute ischemic stroke (IS) remains to be fully elucidated.</p> <p><bold><italic>AIM</italic></bold><bold><italic>: </italic></bold>This study aimed to investigate the association between plasma osmolality and mortality in patients with severe IS, considering stroke subtype.</p> <p><bold><italic>METHODS</italic></bold><bold><italic>: </italic></bold>This study included 150 patients with severe IS of various localizations within 24 hours of symptom onset. All patients had a first-ever stroke, including 61 with cardioembolic and 89 with atherothrombotic subtypes. Plasma and urine osmolality were measured, along with key plasma osmolytes: sodium, potassium, glucose, urea, and protein, as well as urinary sodium levels. Plasma antidiuretic hormone and N-terminal pro-brain natriuretic peptide (NT-proBNP) levels were also assessed.</p> <p><bold><italic>RESULTS</italic></bold><bold><italic>: </italic></bold>Among water-electrolyte disturbances in severe IS, hyperosmolar syndrome occurred 2.5 times more frequently than hypoosmolar syndrome. Hyperosmolar syndrome was 1.5 times more common in patients with the atherothrombotic subtype than in those with the cardioembolic subtype. Hyperosmolar syndromes in stroke were associated with a higher mortality rate (69.3%) compared to hypoosmolar syndromes.</p> <p><bold><italic>CONCLUSION</italic></bold><bold><italic>: </italic></bold>The obtained results on the association between plasma osmolality and mortality in patients with severe IS indicate that hyperosmolar syndromes are the most common type of water-electrolyte disturbances and are more frequently observed in the atherothrombotic rather than the cardioembolic subtype. The identified association between osmolality and mortality highlights the need for new treatment strategies targeting water-electrolyte disturbances in severe IS.</p></abstract><trans-abstract xml:lang="ru"><p><bold>Обоснование. </bold>Повышенная осмолярность плазмы является предиктором смертности при сердечно-сосудистых заболеваниях, включая инсульт, при этом связь между гиперосмолярностью плазмы и летальностью при тяжёлом остром ишемическом инсульте (ИИ) требует уточнения.</p> <p><bold>Цель. </bold>Изучить связь между осмолярностью плазмы крови и летальностью у пациентов с тяжёлым ИИ в зависимости от подтипа.</p> <p><bold>Методы. </bold>В исследование вошли 150 пациентов с тяжёлым ИИ различной локализации и длительностью заболевания не более 24 ч от появления симптомов. Все пациенты были с первичным инсультом, среди них 61 с кардиоэмболическим подтипом и 89 с атеротромботическим. Им проводили осмометрию плазмы крови и мочи, определяли уровни основных осмолитов плазмы крови: натрия, калия, глюкозы, мочевины, белка, содержания ионов натрия в моче. Измеряли содержание антидиуретического гормона и гормонально неактивного мозгового натрийуретического пептида (NT pro-BNP).</p> <p><bold>Результаты. </bold>Среди нарушений водно-электролитного гомеостаза при тяжёлом ИИ гиперосмолярный синдром отмечался в 2,5 раза чаще, чем гипоосмолярный. Зарегистрировано в 1,5 раза больше случаев с гиперосмолярным синдромом при атеротромботическом варианте инсульта, чем при кардиоэмболическом. Гиперосмолярные синдромы при инсульте отличались высоким (69,3%) и большим процентом летальных исходов, чем гипоосмолярные синдромы.</p> <p><bold>Заключение. </bold>Полученные результаты по связи между осмолярностью и летальностью у пациентов с тяжёлым ИИ указывают, что наиболее часто встречающимся видом нарушений водно-электролитного гомеостаза являются гиперосмолярные синдромы и их развитие более характерно для атеротромботического, а не кардиоэмболического подтипа инсульта. Выявленные связи между осмолярностью и летальностью при тяжёлом ИИ дают основание для формирования новых подходов в его лечении при нарушении водно-электролитного гомеостаза.</p></trans-abstract><kwd-group xml:lang="en"><kwd>stroke</kwd><kwd>fatal outcomes</kwd><kwd>hyperosmolar syndrome</kwd><kwd>hypoosmolar syndrome</kwd></kwd-group><kwd-group xml:lang="ru"><kwd>инсульт</kwd><kwd>летальные исходы</kwd><kwd>гипер- и гипоосмолярные синдромы</kwd></kwd-group><funding-group><funding-statement xml:lang="ru">Проведение работы и публикация статьи осуществлены на личные средства авторского коллектива</funding-statement></funding-group></article-meta></front><body></body><back><ref-list><ref id="B1"><label>1.</label><mixed-citation>Feigin VL, Stark BA, Johnson CO. Global, regional, and national burden of stroke and its risk factors, 1990–2019: A systematic analysis for the Global Burden of Disease Study 2019. 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