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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">microcirculation</journal-id><journal-title-group><journal-title xml:lang="ru">Регионарное кровообращение и микроциркуляция</journal-title><trans-title-group xml:lang="en"><trans-title>Regional blood circulation and microcirculation</trans-title></trans-title-group></journal-title-group><issn pub-type="ppub">1682-6655</issn><issn pub-type="epub">2712-9756</issn><publisher><publisher-name>Academician I.P. Pavlov First St. Petersburg State Medical University</publisher-name></publisher></journal-meta><article-meta><article-id pub-id-type="doi">10.24884/1682-6655-2025-24-1-64-72</article-id><article-id custom-type="elpub" pub-id-type="custom">microcirculation-1400</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>Реакция сердечно-сосудистой системы на внутривенное введение физиологического раствора натрия хлорида у здоровых лиц</article-title><trans-title-group xml:lang="en"><trans-title>Cardiovascular system response to intravenous administration of physiologic sodium chloride solution in healthy subjects</trans-title></trans-title-group></title-group><contrib-group><contrib contrib-type="author" corresp="yes"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0002-6030-8141</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Шуракова</surname><given-names>В. А.</given-names></name><name name-style="western" xml:lang="en"><surname>Shurakova</surname><given-names>V. A.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Шуракова Вера Андреевна – ассистент кафедры пропедевтики внутренних болезней с клиникой</p><p>197022, Санкт-Петербург, ул. Льва Толстого, д. 6-8</p></bio><bio xml:lang="en"><p>Shurakova Vera A. – Assistant, Department of Propedeutics of Internal Diseases</p><p>6-8, L’va Tolstogo str., Saint Petersburg, 197022</p></bio><email xlink:type="simple">v.a.shurakova95@gmail.com</email><xref ref-type="aff" rid="aff-1"/></contrib><contrib contrib-type="author" corresp="yes"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0002-4544-2967</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Куликов</surname><given-names>А. Н.</given-names></name><name name-style="western" xml:lang="en"><surname>Kulikov</surname><given-names>A. N.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Куликов Александр Николаевич – д-р мед. наук, профессор, зав. кафедрой пропедевтики внутренних болезней с клиникой, заведующий кафедрой функциональной диагностики, директор научно-клинического исследовательского центра</p><p>197022, Санкт-Петербург, ул. Льва Толстого, д. 6-8</p></bio><bio xml:lang="en"><p>Kulikov Aleksandr N. – Doctor of Medical Sciences, Professor, Head, Department of Propedeutics of Internal Diseases</p><p>6-8, L’va Tolstogo str., Saint Petersburg, 197022</p></bio><email xlink:type="simple">ankulikov2005@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/0000-0002-0586-468X</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Панина</surname><given-names>И. Ю.</given-names></name><name name-style="western" xml:lang="en"><surname>Panina</surname><given-names>I. Yu.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Панина Ирина Юрьевна – д-р мед. наук, профессор, профессор кафедры пропедевтики внутренних болезней с клиникой</p><p>197022, Санкт-Петербург, ул. Льва Толстого, д. 6-8</p></bio><bio xml:lang="en"><p>Panina Irina Yu. – Doctor of Medical Sciences, Professor, Department of Propedeutics of Internal Diseases</p><p>6-8, L’va Tolstogo str., Saint Petersburg, 197022</p></bio><email xlink:type="simple">i.u.panina@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/0000-0002-6524-4706</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Полушин</surname><given-names>А. Ю.</given-names></name><name name-style="western" xml:lang="en"><surname>Polushin</surname><given-names>A. Yu.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Полушин Алексей Юрьевич – канд. мед. наук, руководитель научно-клинического центра трансплантации и клеточной терапии при аутоиммунных и нейродегенеративных заболеваниях</p><p>197022, Санкт-Петербург, ул. Льва Толстого, д. 6-8</p></bio><bio xml:lang="en"><p>Polushin Alexey Yu. – Candidate (PhD) of Medical Sciences, Head, Department of Chemotherapy and Bone Marrow Transplantation for Oncological and Autoimmune Diseases; Head, Laboratory of Neuro-Oncology and Autoimmune Diseases of the R. M. Gorbacheva Research Institute of Children Oncology, Hematology and Transplantation, Associate Professor of the Department of Neurology</p><p>6-8, L’va Tolstogo str., Saint Petersburg, 197022</p></bio><email xlink:type="simple">alexpolushin@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/0000-0001-8699-2482</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Залялов</surname><given-names>Ю. Р.</given-names></name><name name-style="western" xml:lang="en"><surname>Zalyalov</surname><given-names>Yu. R.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Залялов Юрий Ринатович – канд. мед. наук, зав. отделением химиотерапии и ТСК при онкологических и аутоиммунных заболеваниях</p><p>197022, Санкт-Петербург, ул. Льва Толстого, д. 6-8</p></bio><bio xml:lang="en"><p>Zalyalov Yuri R. – Candidate (PhD) of Medical Sciences, Head, Chemotherapy and TSC Department for Oncology and Autoimmune Diseases</p><p>6-8, L’va Tolstogo str., Saint Petersburg, 197022</p></bio><email xlink:type="simple">ahSCt1spbgmu@yandex.ru</email><xref ref-type="aff" rid="aff-1"/></contrib><contrib contrib-type="author" corresp="yes"><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Лопатина</surname><given-names>Е. И.</given-names></name><name name-style="western" xml:lang="en"><surname>Lopatina</surname><given-names>E. I.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Лопатина Евгения Ивановна – врач-невролог научно-клинического центра трансплантации и клеточной терапии при аутоиммунных и нейродегенеративных заболеваниях</p><p>197022, Санкт-Петербург, ул. Льва Толстого, д. 6-8</p></bio><bio xml:lang="en"><p>Lopatina Evgeniya I. – Neurologist, Scientific and Clinical Center for Transplantation and Cell Therapy in Autoimmune and Neurodegenerative Diseases</p><p>6-8, L’va Tolstogo str., Saint Petersburg, 197022</p></bio><email xlink:type="simple">my@elopatina.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/0000-0002-0015-4777</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Цынченко</surname><given-names>А. А.</given-names></name><name name-style="western" xml:lang="en"><surname>Tsynchenko</surname><given-names>A. A.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Цынченко Александр Александрович – врач-гематолог научно-клинического центра трансплантации и клеточной терапии при аутоиммунных и нейродегенеративных заболеваниях</p><p>197022, Санкт-Петербург, ул. Льва Толстого, д. 6-8</p></bio><bio xml:lang="en"><p>Tsynchenko Aleksandr A. – Hematologist, Scientific and Clinical Center for Transplantation and Cell Therapy in Autoimmune and Neurodegenerative Diseases</p><p>6-8, L’va Tolstogo str., Saint Petersburg, 197022</p></bio><email xlink:type="simple">terapia.aiz@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/0000-0003-4204-6915</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Черномордова</surname><given-names>А. В.</given-names></name><name name-style="western" xml:lang="en"><surname>Chernomordova</surname><given-names>A. V.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Черномордова Александра Владимировна – врач ультразвуковой диагностики, ассистент кафедры функциональной диагностики</p><p>197022, Санкт-Петербург, ул. Льва Толстого, д. 6-8</p></bio><bio xml:lang="en"><p>Chernomordova Aleksandra V. – Ultrasound Diagnostician, Assistant, Department of Functional Diagnostics</p><p>6-8, L’va Tolstogo str., Saint Petersburg, 197022</p></bio><email xlink:type="simple">sasha_chernomord@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/0000-0002-9850-1107</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Саганова</surname><given-names>Е. С.</given-names></name><name name-style="western" xml:lang="en"><surname>Saganova</surname><given-names>E. S.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Саганова Елена Сергеевна – канд. мед. наук, зав. нефрологическим отделением № 1, ассистент кафедры пропедевтики внутренних болезней с клиникой</p><p>197022, Санкт-Петербург, ул. Льва Толстого, д. 6-8</p></bio><bio xml:lang="en"><p>Saganova Elena S. – Candidate (PhD) of Medical Sciences, Head, 1st Nephrology Department, Assistant, Department of Propedeutics of Internal Diseases with Clinic</p><p>6-8, L’va Tolstogo str., Saint Petersburg, 197022</p></bio><email xlink:type="simple">nephrolog1985@gmail.com</email><xref ref-type="aff" rid="aff-1"/></contrib><contrib contrib-type="author" corresp="yes"><contrib-id contrib-id-type="orcid">https://orcid.org/0009-0000-8003-2878</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Тимонина</surname><given-names>Е. М.</given-names></name><name name-style="western" xml:lang="en"><surname>Timonina</surname><given-names>E. M.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Тимонина Евгения Михайловна – клинический ординатор по специальности «терапия» кафедры пропедевтики внутренних болезней с клиникой</p><p>197022, Санкт-Петербург, ул. Льва Толстого, д. 6-8</p></bio><bio xml:lang="en"><p>Timonina Evgeniya M. – Clinical Resident in the Specialty “Therapy”, Department of Propedeutics of Internal Diseases with Clinic</p><p>6-8, L’va Tolstogo str., Saint Petersburg, 197022</p></bio><email xlink:type="simple">mrs-blackbat@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/0009-0006-2551-8158</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Каменчуков</surname><given-names>А. Г.</given-names></name><name name-style="western" xml:lang="en"><surname>Kamenchukov</surname><given-names>A. G.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Каменчуков Андрей Геннадьевич – клинический ординатор кафедры нефрологии и диализа по специальности «нефрология»</p><p>197022, Санкт-Петербург, ул. Льва Толстого, д. 6-8</p></bio><bio xml:lang="en"><p>Kamenchukov Andrey G. – Clinical Resident in the Specialty “Nephrology”, Department of Nephrology and Dialysis</p><p>6-8, L’va Tolstogo str., Saint Petersburg, 197022</p></bio><email xlink:type="simple">kamenchukov.a.g@gmail.com</email><xref ref-type="aff" rid="aff-1"/></contrib><contrib contrib-type="author" corresp="yes"><contrib-id contrib-id-type="orcid">https://orcid.org/0009-0008-5107-2107</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Нагорный</surname><given-names>Д. Е.</given-names></name><name name-style="western" xml:lang="en"><surname>Nagorny</surname><given-names>D. E.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Нагорный Даниил Евгеньевич – клинический ординатор по специальности «терапия» кафедры терапии госпитальной с курсом аллергологии и иммунологии имени ак. Черноруцкого с клиникой</p><p>197022, Санкт-Петербург, ул. Льва Толстого, д. 6-8</p></bio><bio xml:lang="en"><p>Nagorny Daniil E. – Clinical Resident in the Specialty “Therapy”, Department of Hospital Therapy with Clinic</p><p>6-8, L’va Tolstogo str., Saint Petersburg, 197022</p></bio><email xlink:type="simple">Daniil.Nagorny@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/0009-0008-1937-640X</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Ульянкина</surname><given-names>Т. А.</given-names></name><name name-style="western" xml:lang="en"><surname>Ulyankina</surname><given-names>T. A.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Ульянкина Татьяна Алексеевна – клинический ординатор по специальности «терапия» кафедры пропедевтики внутренних болезней с клиникой</p><p>197022, Санкт-Петербург, ул. Льва Толстого, д. 6-8</p></bio><bio xml:lang="en"><p>Ulyankina Tatyana A. – Clinical Rresident in the Specialty “Therapy”, Department of Propedeutics of Internal Diseases with Clinic</p><p>6-8, L’va Tolstogo str., Saint Petersburg, 197022</p></bio><email xlink:type="simple">tanyauly@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/0009-0004-5618-5435</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Добровольский</surname><given-names>В. В.</given-names></name><name name-style="western" xml:lang="en"><surname>Dobrovolsky</surname><given-names>V. V.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Добровольский Вадим Валерьевич – врач-нефролог отделения хронического гемодиализа, ассистент кафедры пропедевтики внутренних болезней с клиникой</p><p>197022, Санкт-Петербург, ул. Льва Толстого, д. 6-8</p></bio><bio xml:lang="en"><p>Dobrovolsky Vadim V. – Nephrologist, Chronic Hemodialysis Department, Assistant, Department of Propedeutics of Internal Diseases with Clinic</p><p>6-8, L’va Tolstogo str., Saint Petersburg, 197022</p></bio><email xlink:type="simple">Dashh46@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/0000-0001-9623-778X</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Гинзбург</surname><given-names>А. М.</given-names></name><name name-style="western" xml:lang="en"><surname>Ginzburg</surname><given-names>A. M.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Гинзбург Александр Маркович – канд. мед. наук, зав. лабораторией – врач клинической лабораторной диагностики лаборатории преаналитической модификации биоматериала отделения лабораторной диагностики</p><p>197022, Санкт-Петербург, ул. Льва Толстого, д. 6-8</p></bio><bio xml:lang="en"><p>Ginzburg Aleksandr M. – Candidate (PhD) of Medical Sciences, Head of the Laboratory, Clinical Laboratory Diagnostics Physician, Preanalytical Modification of Biological Material Laboratory, Department of Laboratory Diagnostics</p><p>6-8, L’va Tolstogo str., Saint Petersburg, 197022</p></bio><email xlink:type="simple">ginzalex@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/0000-0002-4299-4379</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Ковальчук</surname><given-names>Ю. П.</given-names></name><name name-style="western" xml:lang="en"><surname>Kovalchuk</surname><given-names>Yu. P.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Ковальчук Юрий Павлович – канд. мед. наук, зам. Главного врача клиники по лабораторной диагностике</p><p>197022, Санкт-Петербург, ул. Льва Толстого, д. 6-8</p></bio><bio xml:lang="en"><p>Kovalchuk Yuri P. – Candidate (PhD) of Medical Sciences, Deputy Chief Physician for Laboratory Diagnostics</p><p>6-8, L’va Tolstogo str., Saint Petersburg, 197022</p></bio><email xlink:type="simple">yuriikowalchuk@yandex.ru</email><xref ref-type="aff" rid="aff-1"/></contrib></contrib-group><aff-alternatives id="aff-1"><aff xml:lang="ru"><institution>Федеральное государственное бюджетное образовательное учреждение высшего образования «Первый Санкт-Петербургский государственный медицинский университет имени академика И. П. Павлова» Министерства здравоохранения Российской Федерации</institution><country>Россия</country></aff><aff xml:lang="en"><institution>Pavlov 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>09</day><month>04</month><year>2025</year></pub-date><volume>24</volume><issue>1</issue><fpage>64</fpage><lpage>72</lpage><permissions><copyright-statement>Copyright &amp;#x00A9; Шуракова В.А., Куликов А.Н., Панина И.Ю., Полушин А.Ю., Залялов Ю.Р., Лопатина Е.И., Цынченко А.А., Черномордова А.В., Саганова Е.С., Тимонина Е.М., Каменчуков А.Г., Нагорный Д.Е., Ульянкина Т.А., Добровольский В.В., Гинзбург А.М., Ковальчук Ю.П., 2025</copyright-statement><copyright-year>2025</copyright-year><copyright-holder xml:lang="ru">Шуракова В.А., Куликов А.Н., Панина И.Ю., Полушин А.Ю., Залялов Ю.Р., Лопатина Е.И., Цынченко А.А., Черномордова А.В., Саганова Е.С., Тимонина Е.М., Каменчуков А.Г., Нагорный Д.Е., Ульянкина Т.А., Добровольский В.В., Гинзбург А.М., Ковальчук Ю.П.</copyright-holder><copyright-holder xml:lang="en">Shurakova V.A., Kulikov A.N., Panina I.Y., Polushin A.Y., Zalyalov Y.R., Lopatina E.I., Tsynchenko A.A., Chernomordova A.V., Saganova E.S., Timonina E.M., Kamenchukov A.G., Nagorny D.E., Ulyankina T.A., Dobrovolsky V.V., Ginzburg A.M., Kovalchuk Y.P.</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://www.microcirc.ru/jour/article/view/1400">https://www.microcirc.ru/jour/article/view/1400</self-uri><abstract><p>Введение. Влияние массивных инфузий на сердечно-сосудистую систему изучено недостаточно. Цель – оценить реакцию кардиоваскулярной системы на массивную инфузионную нагрузку у 5 здоровых лиц. Материалы и методы. В исследование были включены 5 здоровых добровольцев (2 мужчин и 3 женщины), средний возраст обследуемых составил 31,6±5,3 года, средний вес – 73,25±15,8 кг, средняя площадь поверхности тела – 1,83±0,2 кг/м2). Протокол исследования предусматривал введение 0,9 % раствор натрия хлорида через периферический катетер в течение ≈10 часов в дневное время на протяжении 2 суток в объеме 2,2 л/ кв. м площади поверхности тела в сутки. Перед началом эксперимента, а также через 2 и 7 суток от начала, всем обследуемым проводили: измерение массы тела, артериального давления (АД), частоты сердечных сокращений (ЧСС), исследование крови на NTproBNP и трансторакальную эхокардиографию. Результаты. Значимых изменений АД, ЧСС и массы тела не выявлено. Отмечено существенное повышение уровня NTproBNP с 29,3±17,67 нг/мл до 295,4±136,1 нг/мл (p=0,018) через 48 ч от начала инфузии с последующим снижением (38,0±20,94 нг/мл, р=0,020) и нормализацией через 7 суток. Через 48 ч отмечено увеличение объема левого предсердия (от 39,2±9,0 мл до 58,2±10,7 мл; p=0,003), базального размера правого желудочка (от 3,44±0,18 см до 3,66±0,26 см, p=0,020) и вертикального размера правого предсердия (от 4,12±0,24 см до 4,56±0,37 см, p=0,032), увеличение амплитуды систолической экскурсии трикуспидального кольца – TAPSE (от 2,5±0,27 см до 2,94±0,25 см, p=0,034), индекса E/e’(от 3,87±0,52 до 4,83±0,35, p=0,015). Заключение. Внутривенное введение больших объемов 0,9 %NaCL сопровождается увеличением правых камер сердца с усилением сократимости правого желудочка, увеличением объема левого предсердия, ростом давления наполнения левого желудочка и отчетливым повышением NTproBNP. Уровень NTproBNP следует оценивать вне инфузионной терапии.</p></abstract><trans-abstract xml:lang="en"><p>Introduction. Infusion therapy, despite all its advantages, is not fully understood regarding its impact on the cardiovascular system when large volumes of fluid are used. Objective. To assess the response of the cardiovascular system to massive infusion load in 5 healthy individuals. Materials and Methods. The study included 5 healthy volunteers (2 men and 3 women), with a mean age of 31.6±5.3 years, mean weight of 73.25±15.8 kg, and mean body surface area of 1.83±0.2 m². The study protocol involved the administration of 0.9 % sodium chloride solution through a peripheral catheter for ≈10 hours during the daytime over 2 days, at a volume of 2.2 L/m² body surface area per day. Before the start of the experiment, as well as 48 hours (2 days) and 168 hours (7 days) after the start, all participants underwent measurements of body weight, blood pressure (BP), heart rate (HR), blood tests for NT-proBNP levels, and transthoracic echocardiography. Results. The study found no significant changes in BP, HR, and body weight. A significant increase in NT-proBNP level was noted, rising from 29.3±17.67 ng/ml to 295.4±136.1 ng/ml (p=0.018) after 48 hours of infusion, followed by a decrease (38.0±20.94 ng/ml, p=0.020) and normalization after 7 days. Additionally, after 48 hours, there was an increase in the volume of the left atrium (from 39.2±9.0 ml to 58.2±10.7 ml; p=0.003), basal size of the right ventricle (from 3.44±0.18 cm to 3.66±0.26 cm; p=0.020), and vertical size of the right atrium (from 4.12±0.24 cm to 4.56±0.37 cm; p=0.032), as well as an increase in the amplitude of tricuspid annulus systolic excursion (TAPSE) – from 2.5±0.27 cm to 2.94±0.25 cm; p=0.034) and the E/e’ index (from 3.87±0.52 to 4.83±0.35; p=0.015. Conclusion. Intravenous administration of large volumes of 0.9 %NaCL is associated with an enlargement of the right heart chambers, with enhanced contractility of the right ventricle, increased volume of the left atrium, elevated left ventricular filling pressure, and a marked increase in NT-proBNP. NT-proBNP level should be estimated outside of infusion therapy.</p></trans-abstract><kwd-group xml:lang="ru"><kwd>инфузионная нагрузка</kwd><kwd>кардиоваскулярная система</kwd><kwd>здоровые лица</kwd><kwd>NTproBNP</kwd><kwd>эхокардиография</kwd></kwd-group><kwd-group xml:lang="en"><kwd>infusion load</kwd><kwd>cardiovascular system</kwd><kwd>healthy individuals</kwd><kwd>NTproBNP</kwd><kwd>echocardiography</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">Трансплантация аутологичных гемопоэтических стволовых клеток при гемобластозах: методическое руководство. МКБ-10: С81-С96, E85.7. 96 с. / отв. ред. В. Г. Савченко. М., 2020.</mixed-citation><mixed-citation xml:lang="en">Savchenko VG, ed. Autologous hematopoietic stem cell transplantation in hemoblastoses: methodical guide. Moscow; 2020. 96 p. 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