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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">medinfo</journal-id><journal-title-group><journal-title xml:lang="ru">Актуальные проблемы теоретической и клинической медицины</journal-title><trans-title-group xml:lang="en"><trans-title>Actual Problems of Theoretical and Clinical Medicine</trans-title></trans-title-group></journal-title-group><issn pub-type="ppub">2790-1289</issn><issn pub-type="epub">2790-1297</issn><publisher><publisher-name>Казахстанско-Российский медицинский университет</publisher-name></publisher></journal-meta><article-meta><article-id pub-id-type="doi">10.24412/2790-1289-2025-2-35-56</article-id><article-id custom-type="elpub" pub-id-type="custom">medinfo-712</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 ИССЛЕДОВАНИЯ</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>НАРУШЕНИЕ ВЕГЕТАТИВНОЙ РЕГУЛЯЦИИ У ПОЖИЛЫХ ПАЦИЕНТОВ С АРТЕРИАЛЬНОЙ ГИПЕРТЕНЗИЕЙ И ПОСТКОВИДНЫМ СИНДРОМОМ</article-title><trans-title-group xml:lang="en"><trans-title>AUTONOMIC REGULATION DISORDERS IN ELDERLY PATIENTS WITH ARTERIAL HYPERTENSION AND POST-COVID SYNDROME</trans-title></trans-title-group></title-group><contrib-group><contrib contrib-type="author" corresp="yes"><contrib-id contrib-id-type="orcid">https://orcid.org/0009-0004-6569-0484</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Тастайбек</surname><given-names>Т. А.</given-names></name><name name-style="western" xml:lang="en"><surname>Tastaibek</surname><given-names>T. A.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Тастайбек Тимур Аманжолұлы – магистрант 2 года кафедры «Общая врачебная практика</p><p>Алматы</p></bio><bio xml:lang="en"><p>Tastaibek Timur Amanzholuly – 2nd-year master’s student, department of general medical practice</p><p>Almaty</p></bio><email xlink:type="simple">tasstaibek@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/0009-0004-5851-6381</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Костоусова</surname><given-names>М. А.</given-names></name><name name-style="western" xml:lang="en"><surname>Kostousova</surname><given-names>M. A.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Костоусова Мария Алексеевна – магистрант 2 года кафедры «Общая врачебная практика</p><p>Алматы</p></bio><bio xml:lang="en"><p>Kostousova Maria Alekseevna – 2nd-year master’s student, department of general medical practice</p><p>Almaty</p></bio><email xlink:type="simple">kostousova.maria@bk.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/0000-0002-1817-9825</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Кудабаева</surname><given-names>В. Ж.</given-names></name><name name-style="western" xml:lang="en"><surname>Kudabaeva</surname><given-names>V. Z.</given-names></name></name-alternatives><bio xml:lang="ru"><p> </p><p>Кудабаева Венера Жанарбековна – докторант 3 года кафедры «Общая врачебная практика»</p><p>Алматы</p></bio><bio xml:lang="en"><p>Kudabaeva Venera Zhanarbekovna – 3rd-year doctoral student, department of general medical practice</p><p>Almaty</p></bio><email xlink:type="simple">venera-85-09@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/0000-0002-5318-0995</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Маншарипова</surname><given-names>А. Т.</given-names></name><name name-style="western" xml:lang="en"><surname>Mansharipova</surname><given-names>A. T.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Маншарипова Алмагуль Тулеуовна – доктор медицинских наук, профессор кафедры «Общая врачебная практика»</p><p>Алматы</p></bio><bio xml:lang="en"><p>Mansharipova Almagul Tuleuovna – doctor of medical sciences, professor, department of general medical practice</p><p>Almaty</p></bio><email xlink:type="simple">dralma@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/0000-0002-4065-8275</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Адиева</surname><given-names>М. К.</given-names></name><name name-style="western" xml:lang="en"><surname>Adiyeva</surname><given-names>M. K.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Адиева Мадина Куангановна – PhD, заведующая кафедры «Общая врачебная практика»</p><p>Алматы</p></bio><bio xml:lang="en"><p>Adiyeva Madina Kuanganovna – PhD, head of the department of general medical practice</p><p>Almaty</p></bio><email xlink:type="simple">m.adiyeva@yandex.ru</email><xref ref-type="aff" rid="aff-1"/></contrib></contrib-group><aff-alternatives id="aff-1"><aff xml:lang="ru">НУО «Казахстанско-Российский медицинский университет»<country>Казахстан</country></aff><aff xml:lang="en">NEI «Kazakhstan-Russian Medical University»<country>Kazakhstan</country></aff></aff-alternatives><pub-date pub-type="collection"><year>2025</year></pub-date><pub-date pub-type="epub"><day>06</day><month>07</month><year>2025</year></pub-date><volume>0</volume><issue>2</issue><fpage>35</fpage><lpage>56</lpage><permissions><copyright-statement>Copyright &amp;#x00A9; Тастайбек Т.А., Костоусова М.А., Кудабаева В.Ж., Маншарипова А.Т., Адиева М.К., 2025</copyright-statement><copyright-year>2025</copyright-year><copyright-holder xml:lang="ru">Тастайбек Т.А., Костоусова М.А., Кудабаева В.Ж., Маншарипова А.Т., Адиева М.К.</copyright-holder><copyright-holder xml:lang="en">Tastaibek T.A., Kostousova M.A., Kudabaeva V.Z., Mansharipova A.T., Adiyeva M.K.</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://kazrosmedjournal.krmu.edu.kz/jour/article/view/712">https://kazrosmedjournal.krmu.edu.kz/jour/article/view/712</self-uri><abstract><p>Постковидный синдром у пожилых пациентов с артериальной гипертензией остаётся недостаточно изученным, особенно в аспекте вегетативной дисфункции. Системное воздействие SARSCoV-2 и его влияние на регуляцию сердечно-сосудистой системы делают выявление таких нарушений актуальной задачей современной медицины.</p><sec><title>Цель исследования</title><p>Цель исследования. Изучение нарушений функции вегетативной нервной системы у пожилых пациентов с артериальной гипертензией и постковидным синдромом.</p></sec><sec><title>Материалы и методы</title><p>Материалы и методы. В рамках амбулаторного наблюдения на клинических базах Казахстанско-Российского медицинского университета проведено исследование вегетативных нарушений у пожилых пациентов с артериальной гипертензией и постковидным синдромом. Обследование включало опрос, физикальный осмотр, анкетирование по шкале А. М. Вейна и анализ вариабельности сердечного ритма с использованием модуля «КардиоВизор». Оценивались временные и спектральные параметры: SDNN, rMSSD, pNN50, LF, HF, LF/HF, индекс напряжения и показатель активности регуляторных систем.</p></sec><sec><title>Результаты</title><p>Результаты. В исследование включён 141 пациент, разделённый на две группы. Средний возраст в основной группе составил 70,81 ± 5,36 года, в контрольной – 74,00 ± 6,06 года (p = 0,003). Доля пациентов 60-74 лет была выше в основной группе (p = 0,006). Артериальная гипертензия 1 степени чаще встречалась у пациентов с постковидным синдромом, 2 и 3 степени – у контрольной группы (p = 0,042). У пациентов с постковидным синдромом преобладали слабость (38,36 %), тревожность (19,18 %), снижение памяти (21,92 %) и потливость (26,03 %) (p ≤ 0,001). По шкале Вейна отмечено преобладание респираторных симптомов при волнении (p = 0,014). Среди показателей вариабельности сердечного ритма достоверно различалось отношение LF/HF (1,8 против 1,5; p = 0,049).</p></sec><sec><title>Вывод</title><p>Вывод. У пожилых пациентов с артериальной гипертензией постковидный синдром сопровождается характерными жалобами и признаками вегетативной дисфункции, что требует дальнейшего изучения влияния на хронические заболевания.</p></sec></abstract><trans-abstract xml:lang="en"><p>Post-COVID syndrome in elderly patients with arterial hypertension remains insufficiently studied, particularly in terms of autonomic dysfunction. The systemic effects of SARS-CoV-2 and its influence on cardiovascular regulation make the identification of such disorders a relevant issue in modern medicine.</p><sec><title>Objective of the Study</title><p>Objective of the Study. To investigate autonomic nervous system dysfunction in elderly patients with arterial hypertension and post-COVID syndrome.</p></sec><sec><title>Materials and мethods</title><p>Materials and мethods. As part of outpatient follow-up at the clinical bases of the Kazakhstan Russian Medical University, a study was conducted to assess autonomic dysfunction in elderly patients with arterial hypertension and post-COVID syndrome. The examination included interviews, physical examinations, and assessment using Wayne’s scale, and heart rate variability analysis using the «CardioVisor» module. Time and frequency domain parameters were evaluated: SDNN, rMSSD, pNN50, LF, HF, LF/HF, the stress index, and the regulatory systems activity index.</p></sec><sec><title>Results</title><p>Results. The study included 141 patients divided into two groups. The mean age in the main group was 70.81 ± 5.36 years, compared to 74.00 ± 6.06 years in the control group (p = 0.003). The proportion of patients aged 60-74 years was higher in the main group (p = 0.006). Grade 1 arterial hypertension was more common in patients with post-COVID syndrome, while grades 2 and 3 were more frequent in the control group (p = 0.042). Patients with post-COVID syndrome more often reported fatigue (38.36 %), anxiety (19.18 %), memory impairment (21.92 %), and excessive sweating (26.03 %) (p ≤ 0.001). According to the Wayne scale, respiratory symptoms were more prevalent during emotional stress (p = 0.014). Among heart rate variability indicators, a significant difference was observed in the LF/HF ratio (1.8 vs 1.5; p = 0.049).</p></sec><sec><title>Conclusion</title><p>Conclusion. In elderly patients with arterial hypertension, post-COVID syndrome is accompanied by characteristic complaints and signs of autonomic dysfunction, highlighting the need for further investigation into its impact on chronic conditions.</p></sec></trans-abstract><kwd-group xml:lang="ru"><kwd>гипертензия</kwd><kwd>постковидный синдром</kwd><kwd>вегетативная нервная система</kwd><kwd>пожилые</kwd></kwd-group><kwd-group xml:lang="en"><kwd>hypertension</kwd><kwd>post-acute COVID-19 syndrome</kwd><kwd>autonomic nervous system</kwd><kwd>aged</kwd></kwd-group><funding-group xml:lang="ru"><funding-statement>Работа выполнена в рамках программно-целевого финансирования Министерства здравоохранения Республики Казахстан (№BR27310319 «Разработка профилактических и реабилитационных программ для улучшения качества жизни населения в постковидный период»).</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">Клиническое определение случая состояния после COVID-19 методом Дельфийского консенсуса. [Электронный ресурс] // WHO [Webсайт]. – 2021 – URL: https://iris.who.int/bitstream/handle/10665/345824/WHO-2019-nCoV-PostCOVID-19-condition-Clinical-case-definition2021.1-rus.pdf (дата обращения: 24.02.2025).</mixed-citation><mixed-citation xml:lang="en">Klinicheskoe opredelenie sluchaya sostoyaniya posle COVID-19 metodom Del'fiyskogo konsensusa (2021). WHO [Website]. Retrieved February 24, 2021, from https://iris.who.int/bitstream/handle/10665/345824/WHO-2019-nCoV-Post-COVID-19-condition-Clinical-case-definition-2021.1-rus.pdf.</mixed-citation></citation-alternatives></ref><ref id="cit2"><label>2</label><citation-alternatives><mixed-citation xml:lang="ru">Министерство здравоохранения Республики Казахстан. Состояние после COVID-19 (постковидный синдром) у взрослых: клинический протокол [Электронный ресурс] // Medelement [Web-сайт]. – 2023. – URL: https://diseases.medelement.com/disease/состояние-после-covid19-постковидный-синдром-у-взрослых-кпрк-2023/17532 (дата обращения: 24.02.2025).</mixed-citation><mixed-citation xml:lang="en">Ministerstvo zdravookhraneniya Respubliki Kazakhstan. Sostoyanie posle COVID-19 (postkovidnyy sindrom) u vzroslykh: klinicheskiy protokol. Medelement [Website]. Retrieved February 24, 2023, from https://diseases.medelement.com/disease/sostoyanie-posle-covid-19-postkovidnyy-sindrom-u-vzroslykh-kp-rk-2023/17532. (In Russian).</mixed-citation></citation-alternatives></ref><ref id="cit3"><label>3</label><citation-alternatives><mixed-citation xml:lang="ru">Pazukhina E., Garcia-Gallo E., Reyes L. F., Kildal A. B., Jassat W., Dryden M., Holter J. C., Chatterjee A., Gomez K., Søraas A., Puntoni M., Latronico N., Bozza F. A., Edelstein M., Gonçalves B. P., Kartsonaki C., Kruglova O., Gaião S., Chow Y. P., Doshi Y. et al. Long Covid: a global health issue – a prospective, cohort study set in four continents // BMJ Global Health. – 2024. – Vol. 9(10). – Article No. 015245. – DOI: https://doi.org/10.1136/bmjgh-2024-015245.</mixed-citation><mixed-citation xml:lang="en">Pazukhina, E., Garcia-Gallo, E., Reyes, L. F., Kildal, A. B., Jassat, W., Dryden, M., Holter, J. C., Chatterjee, A., Gomez, K., Søraas, A., Puntoni, M., Latronico, N., Bozza, F. A., Edelstein, M., Gonçalves, B. P., Kartsonaki, C., Kruglova, O., Gaião, S., Chow, Y. P., Doshi, Y., et al. (2024). Long Covid: A global health issue – A prospective, cohort study set in four continents. BMJ Global Health, 9(10), e015245. DOI: https://doi.org/10.1136/bmjgh-2024-015245</mixed-citation></citation-alternatives></ref><ref id="cit4"><label>4</label><citation-alternatives><mixed-citation xml:lang="ru">Mancia G., Kreutz R., Brunström M., Burnier M., Grassi G., Januszewicz A., Muiesan M. L., Tsioufis K., Agabiti-Rosei E., Algharably E. A. E., Azizi M., Benetos A., Borghi C., Hitij J. B., Cifkova R., Coca A., Cornelissen V., Cruickshank J. K., Cunha P. G., Danser A. H. J. et al. 2023 ESH Guidelines for the management of arterial hypertension // Journal of Hypertension. – 2023. – Vol. 41(12). – P. 1874- 2071. – DOI:10.1097/HJH.0000000000003480.</mixed-citation><mixed-citation xml:lang="en">Mancia, G., Kreutz, R., Brunström, M., Burnier, M., Grassi, G., Januszewicz, A., Muiesan, M. L., Tsioufis, K., Agabiti-Rosei, E., Algharably, E. A. E., Azizi, M., Benetos, A., Borghi, C., Hitij, J. B., Cifkova, R., Coca, A., Cornelissen, V., Cruickshank, J. K., Cunha, P. G., Danser, A. H. J., et al. (2023). 2023 ESH guidelines for the management of arterial hypertension. Journal of Hypertension, 41(12), 1874-2071. DOI: https://doi.org/10.1097/HJH.0000000000003480</mixed-citation></citation-alternatives></ref><ref id="cit5"><label>5</label><citation-alternatives><mixed-citation xml:lang="ru">Akimova A. V., Andreev A. N., Mironov V. A., Milashchenko A. I. Autonomic dysfunction and undifferentiated connective tissue dysplasia // NDT Days. – 2018. – Vol. 1(2). – P. 263-266.</mixed-citation><mixed-citation xml:lang="en">Akimova, A. V., Andreev, A. N., Mironov, V. A., &amp; Milashchenko, A. I. (2018). Autonomic dysfunction and undifferentiated connective tissue dysplasia. NDT Days, 1(2), 263-266.</mixed-citation></citation-alternatives></ref><ref id="cit6"><label>6</label><citation-alternatives><mixed-citation xml:lang="ru">The Society for Cardiological Science and Technology. Clinical guidelines by consensus: Recording a standard 12-lead electrocardiogram (Version 5, 26 September 2024). SCST Standards Committee, 2024. – 29 p.</mixed-citation><mixed-citation xml:lang="en">The Society for Cardiological Science and Technology (2024). Clinical guidelines by consensus: Recording a standard 12-lead electrocardiogram (Version 5). SCST Standards Committee.</mixed-citation></citation-alternatives></ref><ref id="cit7"><label>7</label><citation-alternatives><mixed-citation xml:lang="ru">Martinez P., Grinand M., Cheggour S., Taieb J., Gourjon G. How to properly evaluate cardiac vagal tone in oncology studies: a state-of-the-art review // Journal of the National Cancer Center. – 2024. – Vol. 4(1). – P. 36-46. – DOI: 10.1016/j.jncc.2024.02.002.</mixed-citation><mixed-citation xml:lang="en">Martinez, P., Grinand, M., Cheggour, S., Taieb, J., &amp; Gourjon, G. (2024). How to properly evaluate cardiac vagal tone in oncology studies: A stateof-the-art review. Journal of the National Cancer Center, 4(1), 36-46. DOI: https://doi.org/10.1016/j.jncc.2024.02.002</mixed-citation></citation-alternatives></ref><ref id="cit8"><label>8</label><citation-alternatives><mixed-citation xml:lang="ru">Nayak S.K., Pradhan B., Mohanty B., Sivaraman J., Ray S. S., Wawrzyniak J., Jarzębski M., Pal K. A Review of Methods and Applications for a Heart Rate Variability Analysis // Algorithms. – 2023. – Vol. 16(9). – P. 433. – DOI:10.3390/a16090433.</mixed-citation><mixed-citation xml:lang="en">Nayak, S. K., Pradhan, B., Mohanty, B., Sivaraman, J., Ray, S. S., Wawrzyniak, J., Jarzębski, M., &amp; Pal, K. (2023). A review of methods and applications for a heart rate variability analysis. Algorithms, 16(9), 433. DOI: https://doi.org/10.3390/a16090433</mixed-citation></citation-alternatives></ref><ref id="cit9"><label>9</label><citation-alternatives><mixed-citation xml:lang="ru">Tiwari R., Kumar R., Malik S., Raj T., Kumar P. Analysis of Heart Rate Variability and Implication of Different Factors on Heart Rate Variability // Current Cardiology Reviews. – 2021. – Vol.17(5). – Article No. 160721189770. – DOI:10.2174/1573403X16999201231203854.</mixed-citation><mixed-citation xml:lang="en">Tiwari, R., Kumar, R., Malik, S., Raj, T., &amp; Kumar, P. (2021). Analysis of heart rate variability and implication of different factors on heart rate variability. Current Cardiology Reviews, 17(5), 160721189770. DOI: https://doi.org/10.2174/1573403X16999201231203854</mixed-citation></citation-alternatives></ref><ref id="cit10"><label>10</label><citation-alternatives><mixed-citation xml:lang="ru">Pham T., Lau Z. J., Chen S. H. A., Makowski D. Heart Rate Variability in Psychology: A Review of HRV Indices and an Analysis Tutorial // Sensors (Basel). – 2021. – Vol. 21(12). – P. 3998. – DOI:10.3390/s21123998.</mixed-citation><mixed-citation xml:lang="en">Pham, T., Lau, Z. J., Chen, S. H. A., &amp; Makowski, D. (2021). Heart rate variability in psychology: A review of HRV indices and an analysis tutorial. Sensors (Basel), 21(12), 3998. DOI: https://doi.org/10.3390/s21123998</mixed-citation></citation-alternatives></ref><ref id="cit11"><label>11</label><citation-alternatives><mixed-citation xml:lang="ru">Karemaker J. M. Interpretation of Heart Rate Variability: The Art of Looking Through a Keyhole // Frontiers in Neuroscience. – 2020. – Vol. 14. – Article No. 609570. – DOI: 10.3389/fnins.2020.609570.</mixed-citation><mixed-citation xml:lang="en">Karemaker, J. M. (2020). Interpretation of heart rate variability: The art of looking through a keyhole. Frontiers in Neuroscience, 14, 609570. DOI: https://doi.org/10.3389/fnins.2020.609570</mixed-citation></citation-alternatives></ref><ref id="cit12"><label>12</label><citation-alternatives><mixed-citation xml:lang="ru">Torres R. E., Heileson J. L., Richardson K. A., Chapman-Lopez T. J., Funderburk L. K., Forsse J. S. The Effectiveness of Utilizing HRV Indices as a Predictor of ACFT Performance Outcomes // Military Medicine. – 2023. – Vol. 188(7-8). – P. 2096- 2101. – DOI:10.1093/milmed/usad009.</mixed-citation><mixed-citation xml:lang="en">Torres, R. E., Heileson, J. L., Richardson, K. A., Chapman-Lopez, T. J., Funderburk, L. K., &amp; Forsse, J. S. (2023). The effectiveness of utilizing HRV indices as a predictor of ACFT performance outcomes. Military Medicine, 188(7-8), 2096-2101. DOI: https://doi.org/10.1093/milmed/usad009</mixed-citation></citation-alternatives></ref><ref id="cit13"><label>13</label><citation-alternatives><mixed-citation xml:lang="ru">Ali M. K., Liu L., Chen J. H., Huizinga J. D. Optimizing Autonomic Function Analysis via Heart Rate Variability Associated With Motor Activity of the Human Colon // Frontiers in Physiology. – 2021. – Vol. 12. – Article No. 619722. – DOI: 10.3389/fphys.2021.619722.</mixed-citation><mixed-citation xml:lang="en">Ali, M. K., Liu, L., Chen, J. H., &amp; Huizinga, J. D. (2021). Optimizing autonomic function analysis via heart rate variability associated with motor activity of the human colon. Frontiers in Physiology, 12, 619722. DOI: https://doi.org/10.3389/fphys.2021.619722</mixed-citation></citation-alternatives></ref><ref id="cit14"><label>14</label><citation-alternatives><mixed-citation xml:lang="ru">Orini M., van Duijvenboden S., Young W. J., Ramírez J., Jones A. R., Hughes A. D., Tinker A., Munroe P. B., Lambiase P. D. Long-term association of ultra-short heart rate variability with cardiovascular events // Scientific Reports. – 2023. – Vol. 13(1). – Article No. 18966. – DOI: 10.1038/s41598-023-45988-2.</mixed-citation><mixed-citation xml:lang="en">Orini, M., van Duijvenboden, S., Young, W. J., Ramírez, J., Jones, A. R., Hughes, A. D., Tinker, A., Munroe, P. B., &amp; Lambiase, P. D. (2023). Long-term association of ultra-short heart rate variability with cardiovascular events. Scientific Reports, 13(1), 18966. DOI: https://doi.org/10.1038/s41598-023-45988-2</mixed-citation></citation-alternatives></ref><ref id="cit15"><label>15</label><citation-alternatives><mixed-citation xml:lang="ru">Yugar L. B. T., Yugar-Toledo J. C., Dinamarco N., Sedenho-Prado L. G., Moreno B. V. D., Rubio T. A., Fattori A., Rodrigues B., Vilela-Martin J. F., Moreno H. The Role of Heart Rate Variability (HRV) in Different Hypertensive Syndromes // Diagnostics. – 2023. – Vol. 13(4). – P. 785. – DOI:10.3390/diagnostics13040785.</mixed-citation><mixed-citation xml:lang="en">Yugar, L. B. T., Yugar-Toledo, J. C., Dinamarco, N., Sedenho-Prado, L. G., Moreno, B. V. D., Rubio, T. A., Fattori, A., Rodrigues, B., Vilela-Martin, J. F., &amp; Moreno, H. (2023). The role of heart rate variability (HRV) in different hypertensive syndromes. Diagnostics, 13(4), 785. DOI: https://doi.org/10.3390/diagnostics13040785</mixed-citation></citation-alternatives></ref><ref id="cit16"><label>16</label><citation-alternatives><mixed-citation xml:lang="ru">Novikov A. A., Smolensky A. V., Mikhaylova A. V. Approaches to the assessment of heart rate variability indicators: A literature review // Heraldof New Medical Technologies. Electronic Edition. – 2023. – Vol. 17(3). – P. 85-94. – DOI: https://doi.org/10.24412/2075-4094-2023-3-3-3.</mixed-citation><mixed-citation xml:lang="en">Novikov, A. A., Smolensky, A. V., &amp; Mikhaylova, A. V. (2023). Approaches to the assessment of heart rate variability indicators: A literature review. Herald of New Medical Technologies. Electronic Edition, 17(3), 85-94. DOI: https://doi.org/10.24412/2075-4094-2023-3-3-3.</mixed-citation></citation-alternatives></ref><ref id="cit17"><label>17</label><citation-alternatives><mixed-citation xml:lang="ru">Zvereva M. V., Matveev Y. A., Iskakova Zh. T. Features of heart rate variability of students in the process of their adaptation to new conditions of educational activity // Vestnik of the Moscow City University. Series: Natural Sciences. – 2020. – Vol. 3 (39). – С. 8-17.</mixed-citation><mixed-citation xml:lang="en">Zvereva, M. V., Matveev, Y. A., &amp; Iskakova, Zh. T. (2020). Features of heart rate variability of students in the process of their adaptation to new conditions of educational activity. Vestnik of the Moscow City University. Series: Natural Sciences, 3(39), 8-17.</mixed-citation></citation-alternatives></ref><ref id="cit18"><label>18</label><citation-alternatives><mixed-citation xml:lang="ru">Venera K., Mansharipova A., Bolsyn A. Initial experience with deprescribing in physically active older adults with post-COVID syndrome in Kazakhstan: A cohort study investigating transition to simplified treatment regimen // Bangladesh Journal of Medical Science. – 2025. – Vol. 24(1). – P. 155- 163. – DOI:10.3329/bjms.v24i1.78729.</mixed-citation><mixed-citation xml:lang="en">Venera, K., Mansharipova, A., &amp; Bolsyn, A. (2025). Initial experience with deprescribing in physically active older adults with post-COVID syndrome in Kazakhstan: A cohort study investigating transition to simplified treatment regimen. Bangladesh Journal of Medical Science, 24(1), 155-163. DOI: https://doi.org/10.3329/bjms.v24i1.78729</mixed-citation></citation-alternatives></ref><ref id="cit19"><label>19</label><citation-alternatives><mixed-citation xml:lang="ru">Tsampasian V., Elghazaly H., Chattopadhyay R., et al. Risk Factors Associated With Post-COVID-19 Condition: A Systematic Review and Metaanalysis // JAMA Internal Medicine. – 2023. – Vol. 183(6). – P. 566-580. – DOI: 10.1001/jamainternmed.2023.0750.</mixed-citation><mixed-citation xml:lang="en">Tsampasian, V., Elghazaly, H., Chattopadhyay, R., et al. (2023). Risk factors associated with postCOVID-19 condition: A systematic review and meta-analysis. JAMA Internal Medicine, 183(6), 566-580. DOI: https://doi.org/10.1001/jamainternmed.2023.0750</mixed-citation></citation-alternatives></ref><ref id="cit20"><label>20</label><citation-alternatives><mixed-citation xml:lang="ru">Zang C., Hou Y., Schenck E. J., et al. Identification of risk factors of Long COVID and predictive modeling in the RECOVER EHR cohorts // Communications Medicine. – 2024. – Vol. 4, № 1. – Article No. 130. – DOI:10.1038/s43856-024-00549-0.</mixed-citation><mixed-citation xml:lang="en">Zang, C., Hou, Y., Schenck, E. J. et al. (2024). Identification of risk factors of Long COVID and predictive modeling in the RECOVER EHR cohorts. Communications Medicine, 4(1), 130. DOI: https://doi.org/10.1038/s43856-024-00549-0.</mixed-citation></citation-alternatives></ref><ref id="cit21"><label>21</label><citation-alternatives><mixed-citation xml:lang="ru">Hejazian S. S., Sadr A. V., Shahjouei S., et al. Prevalence and determinant of long-term PostCOVID conditions among stroke survivors in the United States // Journal of Stroke and Cerebrovascular Diseases. – 2024. – Vol. 33(12). – Article No. 108007. – DOI: 10.1016/j.jstrokecerebrovasdis.2024.108007.</mixed-citation><mixed-citation xml:lang="en">Hejazian, S. S., Sadr, A. V., Shahjouei, S., et al. (2024). Prevalence and determinant of long-term post-COVID conditions among stroke survivors in the United States. Journal of Stroke and Cerebrovascular Diseases, 33(12), 108007. DOI: https://doi.org/10.1016/j.jstrokecerebrovasdis.2024.108007.</mixed-citation></citation-alternatives></ref><ref id="cit22"><label>22</label><citation-alternatives><mixed-citation xml:lang="ru">Hu W., Tang R., Gong S., et al. The Prevalence and Associated Factors of Post-COVID-19 Fatigue: A Systematic Review and Meta-Analysis // Cureus. – 2024. – Vol. 16(7). – Article No. 63656. – DOI: 10.7759/cureus.63656.</mixed-citation><mixed-citation xml:lang="en">Hu, W., Tang, R., Gong, S., et al. (2024). The prevalence and associated factors of post-COVID-19 fatigue: A systematic review and metaanalysis. Cureus, 16(7), e63656. DOI: https://doi.org/10.7759/cureus.63656.</mixed-citation></citation-alternatives></ref><ref id="cit23"><label>23</label><citation-alternatives><mixed-citation xml:lang="ru">Bonfim L. P. F., Correa T. R., Freire B. C. C., et al. Post-COVID-19 cognitive symptoms in patients assisted by a teleassistance service: a retrospective cohort study // Frontiers in Public Health. – 2024. – Vol. 12. – Article No. 1282067. – DOI: 10.3389/fpubh.2024.1282067.</mixed-citation><mixed-citation xml:lang="en">Bonfim, L. P. F., Correa, T. R., Freire, B. C. C., et al. (2024). Post-COVID-19 cognitive symptoms in patients assisted by a teleassistance service: A retrospective cohort study. Frontiers in Public Health, 12, 1282067. DOI: https://doi.org/10.3389/fpubh.2024.128206.</mixed-citation></citation-alternatives></ref><ref id="cit24"><label>24</label><citation-alternatives><mixed-citation xml:lang="ru">D’Hondt S., Gisle L., De Pauw R., et al. Anxiety and depression in people with post-COVID condition: a Belgian population-based cohort study three months after SARS-CoV-2 infection // Social Psychiatry and Psychiatric Epidemiology. – 2024. – Vol. 59(11). – P. 2083-2092. – DOI: 10.1007/s00127-024-02655-9.</mixed-citation><mixed-citation xml:lang="en">D’Hondt, S., Gisle, L., De Pauw, R., et al. (2024). Anxiety and depression in people with post-COVID condition: A Belgian population-based cohort study three months after SARS-CoV-2 infection. Social Psychiatry and Psychiatric Epidemiology, 59(11), 2083-2092. DOI: https://doi.org/10.1007/s00127-024-02655-9.</mixed-citation></citation-alternatives></ref><ref id="cit25"><label>25</label><citation-alternatives><mixed-citation xml:lang="ru">Alkodaymi M. S., Omrani O. A., Ashraf N., et al. Prevalence of post-acute COVID-19 syndrome symptoms at different follow-up periods: a systematic review and meta-analysis // Clinical Microbiology and Infection. – 2022. – Vol. 28(5). – P. 657- 666. – DOI: 10.1016/j.cmi.2022.01.014.</mixed-citation><mixed-citation xml:lang="en">Alkodaymi, M. S., Omrani, O. A., Ashraf, N., et al. (2022). Prevalence of post-acute COVID-19 syndrome symptoms at different follow-up periods: A systematic review and meta-analysis. Clinical Microbiology and Infection, 28(5), 657-666. DOI: https://doi.org/10.1016/j.cmi.2022.01.014.</mixed-citation></citation-alternatives></ref><ref id="cit26"><label>26</label><citation-alternatives><mixed-citation xml:lang="ru">Blackett J. W., Li J., Jodorkovsky D., Freedberg D. E. Prevalence and risk factors for gastrointestinal symptoms after recovery from COVID-19 // Neurogastroenterology and Motility. – 2022. – Vol. 34(3). – Article No. 14251. – DOI: 10.1111/nmo.14251.</mixed-citation><mixed-citation xml:lang="en">Blackett, J. W., Li, J., Jodorkovsky, D., &amp; Freedberg, D. E. (2022). Prevalence and risk factors for gastrointestinal symptoms after recovery from COVID-19. Neurogastroenterology and Motility, 34(3), e14251. DOI: https://doi.org/10.1111/nmo.14251.</mixed-citation></citation-alternatives></ref><ref id="cit27"><label>27</label><citation-alternatives><mixed-citation xml:lang="ru">Chinvararak C., Chalder T. Prevalence of sleep disturbances in patients with long COVID assessed by standardised questionnaires and diagnostic criteria: A systematic review and meta-analysis // Journal of Psychosomatic Research. – 2023. – Vol. 175. – Article No. 111535. – DOI: https://doi.org/10.1016/j.jpsychores.2023.111535.</mixed-citation><mixed-citation xml:lang="en">Chinvararak, C., &amp; Chalder, T. (2023). Prevalence of sleep disturbances in patients with long COVID assessed by standardised questionnaires and diagnostic criteria: A systematic review and meta-analysis. Journal of Psychosomatic Research, 175, 111535. DOI: https://doi.org/10.1016/j.jpsychores.2023.111535.</mixed-citation></citation-alternatives></ref><ref id="cit28"><label>28</label><citation-alternatives><mixed-citation xml:lang="ru">Schmidt-Lauber C., Alba Schmidt E., Hänzelmann S., et al. Increased blood pressure after nonsevere COVID-19 // Journal of Hypertension. – 2023. – Vol. 41(11). – P. 1721-1729. – DOI: 10.1097/HJH.0000000000003522.</mixed-citation><mixed-citation xml:lang="en">Schmidt-Lauber, C., Schmidt, E. A., Hänzelmann, S., et al. (2023). Increased blood pressure af-ter nonsevere COVID-19. Journal of Hypertension, 41(11), 1721-1729. DOI: https://doi.org/10.1097/HJH.0000000000003522.</mixed-citation></citation-alternatives></ref><ref id="cit29"><label>29</label><citation-alternatives><mixed-citation xml:lang="ru">Azami P., Vafa R. G., Heydarzadeh R., et al. Evaluation of blood pressure variation in recovered COVID-19 patients at one-year follow-up: a retrospective cohort study // BMC Cardiovascular Disorders. – 2024. – Vol. 24(1). – Article No. 240. – DOI: 10.1186/s12872-024-03916-w.</mixed-citation><mixed-citation xml:lang="en">Azami, P., Vafa, R. G., Heydarzadeh, R., et al. (2024). Evaluation of blood pressure variation in recovered COVID-19 patients at one-year followup: A retrospective cohort study. BMC Cardiovascular Disorders, 24(1), 240. DOI: https://doi.org/10.1186/s12872-024-03916-w.</mixed-citation></citation-alternatives></ref><ref id="cit30"><label>30</label><citation-alternatives><mixed-citation xml:lang="ru">Zhang V., Fisher M., Hou W., et al. Incidence of New-Onset Hypertension Post-COVID-19: Comparison With Influenza // Hypertension (Dallas, Tex.: 1979). – 2023. – Vol. 80(10). – P. 2135-2148. – DOI:10.1161/HYPERTENSIONAHA.123.21174.</mixed-citation><mixed-citation xml:lang="en">Zhang, V., Fisher, M., Hou, W., et al. (2023). Incidence of new-onset hypertension post-COVID-19: Comparison with influenza. Hypertension, 80(10), 2135-2148. DOI: https://doi.org/10.1161/HYPERTENSIONAHA.123.21174.</mixed-citation></citation-alternatives></ref><ref id="cit31"><label>31</label><citation-alternatives><mixed-citation xml:lang="ru">Larsen N. W., Stiles L. E., Shaik R., et al. Characterization of autonomic symptom burden in long COVID: A global survey of 2,314 adults // Frontiers in Neurology. – 2022. – Vol. 13. – Article No. 1012668. – DOI: 10.3389/fneur.2022.1012668.</mixed-citation><mixed-citation xml:lang="en">Larsen, N. W., Stiles, L. E., Shaik, R., et al. (2022). Characterization of autonomic symptom burden in long COVID: A global survey of 2,314 adults. Frontiers in Neurology, 13, 1012668. DOI: https://doi.org/10.3389/fneur.2022.1012668.</mixed-citation></citation-alternatives></ref><ref id="cit32"><label>32</label><citation-alternatives><mixed-citation xml:lang="ru">Eldokla A. M., Mohamed-Hussein A. A., Fouad A. M., et al. Prevalence and patterns of symptoms of dysautonomia in patients with long-COVID syndrome: A cross-sectional study // Annals of Clinical and Translational Neurology. – 2022. – Vol. 9(6). – P. 778-785. – DOI: 10.1002/acn3.51557.</mixed-citation><mixed-citation xml:lang="en">Eldokla, A. M., Mohamed-Hussein, A. A., Fouad, A. M., et al. (2022). Prevalence and patterns of symptoms of dysautonomia in patients with longCOVID syndrome: A cross-sectional study. Annals of Clinical and Translational Neurology, 9(6), 778- 785. DOI: https://doi.org/10.1002/acn3.51557.</mixed-citation></citation-alternatives></ref><ref id="cit33"><label>33</label><citation-alternatives><mixed-citation xml:lang="ru">Buoite Stella A., Furlanis G., Frezza N. A. et al. Autonomic dysfunction in post-COVID patientswith and without neurological symptoms: A prospective multidomain observational study // Journal of Neurology. – 2022. – Vol. 269(2). – P. 587- 596. – DOI: 10.1007/s00415-021-10735-y.</mixed-citation><mixed-citation xml:lang="en">Buoite Stella, A., Furlanis, G., Frezza, N. A., et al. (2022). Autonomic dysfunction in post-COVID patients with and without neurological symptoms: A prospective multidomain observational study. Journal of Neurology, 269(2), 587-596. DOI: https://doi.org/10.1007/s00415-021-10735-y.</mixed-citation></citation-alternatives></ref><ref id="cit34"><label>34</label><citation-alternatives><mixed-citation xml:lang="ru">Yar T., Salem A. M., Rafique N., et al. Composite Autonomic Symptom Score-31 for the diagnosis of cardiovascular autonomic dysfunction in longterm coronavirus disease 2019 // Journal of Family &amp; Community Medicine. – 2024. – Vol. 31(3). – P. 214-221. – DOI: 10.4103/jfcm.jfcm2024.</mixed-citation><mixed-citation xml:lang="en">Yar, T., Salem, A. M., Rafique, N., et al. (2024). Composite Autonomic Symptom Score-31 for the diagnosis of cardiovascular autonomic dysfunction in long-term coronavirus disease 2019. Journal of Family &amp; Community Medicine, 31(3), 214-221. DOI: https://doi.org/10.4103/jfcm.jfcm2024.</mixed-citation></citation-alternatives></ref><ref id="cit35"><label>35</label><citation-alternatives><mixed-citation xml:lang="ru">Menezes Junior A. D. S., Schröder A. A., Botelho S. M., Resende A. L. Cardiac Autonomic Function in Long COVID-19 Using Heart Rate Variability: An Observational Cross-Sectional Study // Journal of Clinical Medicine. – 2022. – Vol. 12(1). – Article No. 100. – DOI: 10.3390/jcm12010100.</mixed-citation><mixed-citation xml:lang="en">Menezes Junior, A. D. S., Schröder, A. A., Botelho, S. M., &amp; Resende, A. L. (2022). Cardiac autonomic function in long COVID-19 using heart rate variability: An observational cross-sectional study. Journal of Clinical Medicine, 12(1), 100. DOI: https://doi.org/10.3390/jcm12010100.</mixed-citation></citation-alternatives></ref><ref id="cit36"><label>36</label><citation-alternatives><mixed-citation xml:lang="ru">Levent F., Tutuncu A., Ozmen G. The effect of COVID-19 infection on heart rate variability: A cross-sectional study // International Journal of the Cardiovascular Academy. – 2022. – Vol. 8(3). – P. 61-66. – DOI: 10.4103/ijca.ijca_9_22.</mixed-citation><mixed-citation xml:lang="en">Levent, F., Tutuncu, A., &amp; Ozmen, G. (2022). The effect of COVID-19 infection on heart rate variability: A cross-sectional study. International Journal of the Cardiovascular Academy, 8(3), 61- 66. DOI: https://doi.org/10.4103/ijca.ijca_9_22.</mixed-citation></citation-alternatives></ref><ref id="cit37"><label>37</label><citation-alternatives><mixed-citation xml:lang="ru">Oscoz-Ochandorena S., Legarra-Gorgoñon G., García-Alonso Y., et al. Reduced autonomic function in patients with long-COVID-19 syndrome is mediated by cardiorespiratory fitness // Current Problems in Cardiology. – 2024. – Vol. 49(9). – Article No. 102732. – DOI: 10.1016/j.cpcardiol.2024.102732.</mixed-citation><mixed-citation xml:lang="en">Oscoz-Ochandorena, S., Legarra-Gorgoñon, G., García-Alonso, Y., et al. (2024). Reduced autonomic function in patients with long-COVID-19 syndrome is mediated by cardiorespiratory fitness. Current Problems in Cardiology, 49(9), 102732. DOI: https://doi.org/10.1016/j.cpcardiol.2024.102732.</mixed-citation></citation-alternatives></ref></ref-list><fn-group><fn fn-type="conflict"><p>The authors declare that there are no conflicts of interest present.</p></fn></fn-group></back></article>
