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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">Kazan medical journal</journal-id><journal-title-group><journal-title xml:lang="en">Kazan medical journal</journal-title><trans-title-group xml:lang="ru"><trans-title>Казанский медицинский журнал</trans-title></trans-title-group></journal-title-group><issn publication-format="print">0368-4814</issn><issn publication-format="electronic">2587-9359</issn><publisher><publisher-name xml:lang="en">Eco-Vector</publisher-name></publisher></journal-meta><article-meta><article-id pub-id-type="publisher-id">698675</article-id><article-id pub-id-type="doi">10.17816/KMJ698675</article-id><article-id pub-id-type="edn">PRUMZT</article-id><article-categories><subj-group subj-group-type="toc-heading" xml:lang="en"><subject>Original research</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">Prediction of Major Adverse Cardiovascular Events in Patients With COVID-19 Who Did Not Have Prior Cardiovascular Pathology: A Cohort Study</article-title><trans-title-group xml:lang="ru"><trans-title>Прогнозирование основных неблагоприятных сердечно-сосудистых событий у пациентов с COVID-19, не имевших исходной сердечно-сосудистой патологии: когортное исследование</trans-title></trans-title-group></title-group><contrib-group><contrib contrib-type="author"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0002-9451-9318</contrib-id><contrib-id contrib-id-type="scopus">57349117300</contrib-id><contrib-id contrib-id-type="spin">8032-1241</contrib-id><name-alternatives><name xml:lang="en"><surname>Kanaeva</surname><given-names>Tatyana V.</given-names></name><name xml:lang="ru"><surname>Канаева</surname><given-names>Татьяна Владимировна</given-names></name></name-alternatives><address><country country="RU">Russian Federation</country></address><bio xml:lang="en"><p>MD, Cand. Sci. (Medicine), Assistant Lecturer, hospital therapy Depart.</p></bio><bio xml:lang="ru"><p>канд. мед. наук, ассистент, каф. госпитальной терапии</p></bio><email>tatyanakanaeva7795@gmail.com</email><xref ref-type="aff" rid="aff1"/></contrib><contrib contrib-type="author"><contrib-id contrib-id-type="orcid">https://orcid.org/0009-0000-2005-1655</contrib-id><name-alternatives><name xml:lang="en"><surname>Nemtseva</surname><given-names>Lada  A.</given-names></name><name xml:lang="ru"><surname>Немцева</surname><given-names>Лада  Андреевна</given-names></name></name-alternatives><address><country country="RU">Russian Federation</country></address><bio xml:lang="en"><p>student, Institute of Clinical Medicine</p></bio><bio xml:lang="ru"><p>студентка, Институт клинической медицины</p></bio><email>soul339@mail.ru</email><xref ref-type="aff" rid="aff1"/></contrib><contrib contrib-type="author"><contrib-id contrib-id-type="orcid">https://orcid.org/0009-0005-3302-4345</contrib-id><name-alternatives><name xml:lang="en"><surname>Popova</surname><given-names>Ekaterina  A.</given-names></name><name xml:lang="ru"><surname>Попова</surname><given-names>Екатерина  Алексеевна</given-names></name></name-alternatives><address><country country="RU">Russian Federation</country></address><bio xml:lang="en"><p>student, Institute of Clinical Medicine</p></bio><bio xml:lang="ru"><p>студентка, Институт клинической медицины</p></bio><email>katerina_popova2702@mail.ru</email><xref ref-type="aff" rid="aff1"/></contrib><contrib contrib-type="author"><contrib-id contrib-id-type="orcid">https://orcid.org/0009-0007-0573-1135</contrib-id><name-alternatives><name xml:lang="en"><surname>Ivashchenko</surname><given-names>Viktoriia  V.</given-names></name><name xml:lang="ru"><surname>Иващенко</surname><given-names>Виктория  Владимировна</given-names></name></name-alternatives><address><country country="RU">Russian Federation</country></address><bio xml:lang="en"><p>student, Institute of Clinical Medicine</p></bio><bio xml:lang="ru"><p>студентка, Институт клинической медицины</p></bio><email>ivashencko.viktoriya@yandex.ru</email><xref ref-type="aff" rid="aff1"/></contrib><contrib contrib-type="author"><name-alternatives><name xml:lang="en"><surname>Abbasova</surname><given-names>Nailya  D.</given-names></name><name xml:lang="ru"><surname>Аббасова</surname><given-names>Наиля Джавад кызы</given-names></name></name-alternatives><address><country country="RU">Russian Federation</country></address><bio xml:lang="en"><p>student, Institute of Clinical Medicine</p></bio><bio xml:lang="ru"><p>студентка, Институт клинической медицины</p></bio><email>nailyaabbasova9@gmail.com</email><xref ref-type="aff" rid="aff1"/></contrib><contrib contrib-type="author"><name-alternatives><name xml:lang="en"><surname>Zelentsova</surname><given-names>Angelina  Y.</given-names></name><name xml:lang="ru"><surname>Зеленцова</surname><given-names>Ангелина  Юрьевна</given-names></name></name-alternatives><address><country country="RU">Russian Federation</country></address><bio xml:lang="en"><p>student, Institute of Clinical Medicine</p></bio><bio xml:lang="ru"><p>студентка, Институт клинической медицины</p></bio><email>AngelinaZel@yandex.ru</email><xref ref-type="aff" rid="aff1"/></contrib><contrib contrib-type="author"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0002-9104-8020</contrib-id><name-alternatives><name xml:lang="en"><surname>Bulaeva</surname><given-names>Yulia  V.</given-names></name><name xml:lang="ru"><surname>Булаева</surname><given-names>Юлия Викторовна</given-names></name></name-alternatives><address><country country="RU">Russian Federation</country></address><bio xml:lang="en"><p>MD, Cand. Sci. (Medicine), Assistant Lecturer, Depart. of faculty therapy</p></bio><bio xml:lang="ru"><p>канд. мед. наук, ассистент, каф. факультетской терапии</p></bio><email>19vita@mail.ru</email><xref ref-type="aff" rid="aff1"/></contrib><contrib contrib-type="author"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0002-7464-826X</contrib-id><contrib-id contrib-id-type="scopus">6603194518</contrib-id><contrib-id contrib-id-type="spin">6506-0261</contrib-id><name-alternatives><name xml:lang="en"><surname>Karoli</surname><given-names>Nina A.</given-names></name><name xml:lang="ru"><surname>Кароли</surname><given-names>Нина Анатольевна</given-names></name></name-alternatives><address><country country="RU">Russian Federation</country></address><bio xml:lang="en"><p>MD, Professor, hospital therapy Depart.</p></bio><bio xml:lang="ru"><p>д-р мед. наук, профессор, каф. госпитальной терапии</p></bio><email>nina.karoli.73@gmail.com</email><xref ref-type="aff" rid="aff1"/></contrib></contrib-group><aff-alternatives id="aff1"><aff><institution xml:lang="en">Saratov State Medical University named after V.I. Razumovsky</institution></aff><aff><institution xml:lang="ru">Саратовский государственный медицинский университет им. В.И. Разумовского</institution></aff></aff-alternatives><pub-date date-type="preprint" iso-8601-date="2026-06-05" publication-format="electronic"><day>05</day><month>06</month><year>2026</year></pub-date><volume>107</volume><issue>4</issue><issue-title xml:lang="ru"/><history><date date-type="received" iso-8601-date="2025-12-15"><day>15</day><month>12</month><year>2025</year></date><date date-type="accepted" iso-8601-date="2026-04-08"><day>08</day><month>04</month><year>2026</year></date></history><permissions><copyright-statement xml:lang="en">Copyright ©; 2026, Eco-Vector</copyright-statement><copyright-statement xml:lang="ru">Copyright ©; 2026, Эко-Вектор</copyright-statement><copyright-year>2026</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/" start_date="2029-06-06"/><license><ali:license_ref xmlns:ali="http://www.niso.org/schemas/ali/1.0/">https://eco-vector.com/for_authors.php#07</ali:license_ref></license></permissions><self-uri xlink:href="https://kazanmedjournal.ru/kazanmedj/article/view/698675">https://kazanmedjournal.ru/kazanmedj/article/view/698675</self-uri><abstract xml:lang="en"><p><italic><bold>BACKGROUND</bold>:</italic> The novel coronavirus infection (COVID-19) is associated with a high risk of major adverse cardiovascular events (MACE) and venous thromboembolism in the post-hospitalization period.</p> <p><italic><bold>AIM</bold>:</italic> To identify early predictors and develop a model for predicting long-term MACE in patients who have recovered from COVID-19, based on analysis of clinical, laboratory, and instrumental data.</p> <p><italic><bold>METHODS</bold>:</italic> A prospective study was conducted involving 112 patients without a history of cardiovascular disease who were hospitalized with a confirmed diagnosis of COVID-19 and grade 1–4 lung involvement on computed tomography. Upon admission, in addition to standard clinical, laboratory, and instrumental evaluation, levels of high-sensitivity troponins T and I, N-terminal pro-brain natriuretic peptide, soluble suppression of tumorigenicity 2 (sST2), pentraxin-3 (PTX-3), and galectin-3 (Gal-3) were measured. During a two-year follow-up, the development of MACE (acute cerebrovascular accident, acute myocardial infarction, pulmonary embolism, cardiovascular death) was assessed. Potential predictors of MACE were identified using logistic regression with stepwise variable selection (Forward method).</p> <p><italic><bold>RESULTS</bold>:</italic> During the follow-up period, MACE was recorded in 12.5% of patients. Differences in clinical, demographic, laboratory, and instrumental characteristics between patients with and without MACE were analyzed. Three independent predictors of MACE were identified: Gal-3 &gt; 5.1 ng/mL (<italic>p</italic> &lt; 0.001), sST2 &gt; 48 ng/mL (<italic>p </italic>&lt; 0.001), and PTX-3 &gt; 9.6 ng/mL (<italic>p</italic> &lt; 0.001). Based on the multivariate model incorporating these three predictors, a calculator was developed to estimate the probability of MACE in patients without a history of cardiovascular disease who have recovered from COVID-19.</p> <p><italic><bold>CONCLUSION</bold>:</italic> The developed mathematical model has high predictive accuracy (80.0%) and can identify patients at high risk of MACE during post-hospital follow-up.</p></abstract><trans-abstract xml:lang="ru"><p><bold>Обоснование</bold>. Новая коронавирусная инфекция (COVID-19) ассоциирована с высоким риском основных неблагоприятных сердечно-сосудистых событий и венозных тромбоэмболий в постгоспитальном периоде.</p> <p><bold>Цель исследовани</bold>я. Поиск ранних предикторов и разработка модели прогнозирования основных неблагоприятных сердечно-сосудистых событий в долгосрочной перспективе у пациентов, перенёсших COVID-19, на основе анализа клинико-лабораторных и инструментальных данных.</p> <p><bold>Методы</bold>.<italic> </italic>Проведено проспективное исследование, включавшее 112 пациентов без анамнеза сердечно-сосудистых заболеваний, госпитализированных с подтверждённым диагнозом COVID-19 и поражением лёгких 1–4-й степени по данным компьютерной томографии. При поступлении, помимо стандартного клинико-лабораторного и инструментального обследования, определяли уровни высокочувствительных тропонинов T и I, N-концевого промозгового натрийуретического пептида, растворимого белка подавления онкогенности (sST2), пентраксина-3 (РТХ-3) и галектина-3 (Gal-3). В течение двухлетнего периода наблюдения оценивали развитие основных неблагоприятных сердечно-сосудистых событий (острое нарушение мозгового кровообращения, острый инфаркт миокарда, тромбоэмболия лёгочной артерии, сердечно-сосудистая смерть). Потенциальные предикторы определяли с помощью логистической регрессии с пошаговым включением переменных (метод Forward).</p> <p><bold>Результаты</bold>.<italic> </italic>За период наблюдения основные неблагоприятные сердечно-сосудистые события зафиксированы у 12,5% пациентов. Проведён анализ различий клинико-демографических и лабораторно-инструментальных характеристик у пациентов двух групп (с наличием и отсутствием сердечно-сосудистых событий). Выявлены три независимых предиктора: концентрация Gal-3 &gt;5,1 нг/мл (<italic>p</italic> &lt;0,001), sST2 &gt;48 нг/мл (<italic>p</italic> &lt;0,001), РТХ-3 &gt;9,6 нг/мл (<italic>p</italic> &lt;0,001). На основании многофакторной модели, включающей указанные предикторы, разработан калькулятор для расчёта вероятности развития основных неблагоприятных сердечно-сосудистых событий у пациентов без анамнеза сердечно-сосудистых заболеваний, перенёсших COVID-19.</p> <p><bold>Заключение</bold>.<italic> </italic>Разработанная<italic> </italic>математическая модель с высокой прогностической точностью (80,0%) позволяет выявлять пациентов с высоким риском основных неблагоприятных сердечно-сосудистых событий на постгоспитальном этапе наблюдения.</p></trans-abstract><kwd-group xml:lang="en"><kwd>cardiovascular biomarkers</kwd><kwd>sST2</kwd><kwd>pentraxin-3</kwd><kwd>galectin-3</kwd><kwd>MACE</kwd><kwd>COVID-19</kwd></kwd-group><kwd-group xml:lang="ru"><kwd>сердечно-сосудистые биомаркёры</kwd><kwd>sST2, пентраксин-3</kwd><kwd>галектин-3</kwd><kwd>MACE</kwd><kwd>COVID-19</kwd></kwd-group><funding-group/></article-meta></front><body></body><back><ref-list><ref id="B1"><label>1.</label><mixed-citation>Shlyakho EV, Konradi AO, Arutyunov GP, et al. 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