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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">322039</article-id><article-id pub-id-type="doi">10.17816/KMJ322039</article-id><article-categories><subj-group subj-group-type="toc-heading" xml:lang="en"><subject>Theoretical and clinical medicine</subject></subj-group><subj-group subj-group-type="toc-heading" xml:lang="ru"><subject>Теоретическая и клиническая медицина</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">The course of chronic heart failure in patients after COVID-19 against the background of active cytomegalovirus infection</article-title><trans-title-group xml:lang="ru"><trans-title>Течение хронической сердечной недостаточности у пациентов, перенёсших COVID-19, на фоне активной цитомегаловирусной инфекции</trans-title></trans-title-group></title-group><contrib-group><contrib contrib-type="author"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0002-7777-6419</contrib-id><name-alternatives><name xml:lang="en"><surname>Shilov</surname><given-names>Sergey N.</given-names></name><name xml:lang="ru"><surname>Шилов</surname><given-names>Сергей Николаевич</given-names></name></name-alternatives><address><country country="RU">Russian Federation</country></address><bio xml:lang="en"><p>M.D., D. Sci. (Med.), Prof., Depart. of Pathological Physiology and Clinical Pathophysiology</p></bio><bio xml:lang="ru"><p>докт. мед. наук, проф., каф. патологической физиологии и клинической патофизиологии</p></bio><email>newsib54@gmail.com</email><xref ref-type="aff" rid="aff1"/></contrib><contrib contrib-type="author"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0001-6701-5395</contrib-id><name-alternatives><name xml:lang="en"><surname>Mayanskaya</surname><given-names>Svetlana D.</given-names></name><name xml:lang="ru"><surname>Маянская</surname><given-names>Светлана Дмитриевна</given-names></name></name-alternatives><address><country country="RU">Russian Federation</country></address><bio xml:lang="en"><p>M.D., D. Sci. (Med.), Prof., Depart. of Hospital Therapy</p></bio><bio xml:lang="ru"><p>докт. мед. наук, проф., каф. госпитальной терапии</p></bio><email>Smayanskaya@mail.ru</email><xref ref-type="aff" rid="aff2"/></contrib><contrib contrib-type="author"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0001-7864-3194</contrib-id><name-alternatives><name xml:lang="en"><surname>Pankova</surname><given-names>Irina V.</given-names></name><name xml:lang="ru"><surname>Панкова</surname><given-names>Ирина Владимировна</given-names></name></name-alternatives><address><country country="RU">Russian Federation</country></address><bio xml:lang="en"><p>Assistant, Depart. of Pathological Physiology and Clinical Pathophysiology</p></bio><bio xml:lang="ru"><p>асс., каф. патологической физиологии и клинической патофизиологии</p></bio><email>pankovairin@mail.ru</email><xref ref-type="aff" rid="aff1"/></contrib><contrib contrib-type="author"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0002-7361-6143</contrib-id><name-alternatives><name xml:lang="en"><surname>Grigoreva</surname><given-names>Natalya S.</given-names></name><name xml:lang="ru"><surname>Григорьева</surname><given-names>Наталья Сергеевна</given-names></name></name-alternatives><address><country country="RU">Russian Federation</country></address><bio xml:lang="en"><p>student</p></bio><bio xml:lang="ru"><p>студент</p></bio><email>natasha_grigoreva_99@mail.ru</email><xref ref-type="aff" rid="aff1"/></contrib><contrib contrib-type="author"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0002-3032-8686</contrib-id><name-alternatives><name xml:lang="en"><surname>Govor</surname><given-names>Inna V.</given-names></name><name xml:lang="ru"><surname>Говор</surname><given-names>Инна Вячеславовна</given-names></name></name-alternatives><address><country country="RU">Russian Federation</country></address><bio xml:lang="en"><p>student</p></bio><bio xml:lang="ru"><p>студент</p></bio><email>i.v.govor@gmail.com</email><xref ref-type="aff" rid="aff1"/></contrib></contrib-group><aff-alternatives id="aff1"><aff><institution xml:lang="en">Novosibirsk State Medical University</institution></aff><aff><institution xml:lang="ru">Новосибирский государственный медицинский университет</institution></aff></aff-alternatives><aff-alternatives id="aff2"><aff><institution xml:lang="en">Kazan State Medical University</institution></aff><aff><institution xml:lang="ru">Казанский государственный медицинский университет</institution></aff></aff-alternatives><pub-date date-type="preprint" iso-8601-date="2023-04-20" publication-format="electronic"><day>20</day><month>04</month><year>2023</year></pub-date><pub-date date-type="pub" iso-8601-date="2023-05-26" publication-format="electronic"><day>26</day><month>05</month><year>2023</year></pub-date><volume>104</volume><issue>3</issue><issue-title xml:lang="en"/><issue-title xml:lang="ru"/><fpage>332</fpage><lpage>340</lpage><history><date date-type="received" iso-8601-date="2023-04-09"><day>09</day><month>04</month><year>2023</year></date><date date-type="accepted" iso-8601-date="2023-04-20"><day>20</day><month>04</month><year>2023</year></date></history><permissions><copyright-statement xml:lang="en">Copyright ©; 2023, Eco-Vector</copyright-statement><copyright-statement xml:lang="ru">Copyright ©; 2023, Эко-Вектор</copyright-statement><copyright-year>2023</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="2026-05-26"/></permissions><self-uri xlink:href="https://kazanmedjournal.ru/kazanmedj/article/view/322039">https://kazanmedjournal.ru/kazanmedj/article/view/322039</self-uri><abstract xml:lang="en"><p><bold>Background.</bold> A new coronavirus infection may be complicated in the post-COVID period by the development of adverse cardiovascular events associated with chronic heart failure.</p> <p><bold>Aim.</bold> To study the features of the course of chronic heart failure in patients after COVID-19 infection against the background of active cytomegalovirus infection.</p> <p><bold>Material and methods.</bold> The study included 102 patients with chronic heart failure with reduced and intermediate left ventricular ejection fractions, who underwent COVID-19 in mild and moderate forms. The control group consisted of 61 patients with chronic heart failure and no COVID-19. Within 6 months after the infection with COVID-19, the features of the course of chronic heart failure were assessed. Quantitative determination of deoxyribonucleic acid (DNA) of cytomegalovirus in blood plasma was carried out by polymerase chain reaction. To assess the risk of adverse events, the odds ratio (OR) with a 95% confidence interval (95% CI) was calculated. Quantitative data were presented as median and interquartile range (25th and 75th percentiles).</p> <p><bold>Results.</bold> After coronavirus infection, the risk of an unfavorable course of chronic heart failure (OR=6.237; 95% CI=2.911–13.362; p=0.001), hospitalization due to decompensation of chronic heart failure (OR=5.9; 95% CI=1.313–26.504; p=0.033), an increase in the functional class of heart failure by 1 class or more (OR=4.19; 95% CI=1.636–10.736; p=0.009), development of atrial fibrillation paroxysms (OR=3.832; 95% CI=1.385–10.599, p=0.014), significantly increased. The number of copies of cytomegalovirus DNA in patients who underwent COVID-19 was significantly higher in the group of patients with an unfavorable course of chronic heart failure compared to the same group, in which patients did not tolerate COVID-19 — 2238.5 (1888.5; 2647.5) and 1411.5 (1112.5; 1684.5) copies/ml, respectively (p &lt;0.001).</p> <p><bold>Conclusion.</bold> Patients with chronic heart failure after 6 months of COVID-19 infection are at high risk of developing adverse cardiovascular events against the background of active cytomegalovirus infection.</p></abstract><trans-abstract xml:lang="ru"><p><bold>Актуальность.</bold> Новая коронавирусная инфекция может в постковидном периоде осложняться развитием неблагоприятных сердечно-сосудистых событий, ассоциированных с хронической сердечной недостаточностью.</p> <p><bold>Цель.</bold> Изучить особенности течения хронической сердечной недостаточности у пациентов после перенесённой инфекции COVID-19 на фоне активной цитомегаловирусной инфекции.</p> <p><bold>Материал и методы исследования.</bold> В исследование включены 102 пациента с хронической сердечной недостаточностью, сниженной и промежуточной фракциями выброса левого желудочка, перенёсших COVID-19 в лёгкой и среднетяжёлой формах. Группу контроля составил 61 пациент с хронической сердечной недостаточностью и отсутствием COVID-19. В течение 6 мес после перенесённой инфекции COVID-19 оценивали особенности течения хронической сердечной недостаточности. Количественное определение дезоксирибонуклеиновой кислоты (ДНК) цитомегаловируса в плазме крови проводили методом полимеразной цепной реакции. Для оценки риска развития неблагоприятных событий производили расчёт отношения шансов (ОШ) с 95% доверительным интервалом (95% ДИ). Количественные данные представляли в виде медианы и межквартильного интервала (25-й и 75-й процентили).</p> <p><bold>Результаты.</bold> После коронавирусной инфекции существенно повышается риск неблагоприятного течения хронической сердечной недостаточности (ОШ=6,237; 95% ДИ=2,911–13,362; р=0,001), госпитализации в связи с декомпенсацией хронической сердечной недостаточности (ОШ=5,9; 95% ДИ=1,313–26,504; р=0,033), увеличения функционального класса сердечной недостаточности на 1 класс и более (ОШ=4,19; 95% ДИ=1,636–10,736; р=0,009), развития пароксизмов фибрилляции предсердий (ОШ=3,832; 95% ДИ=1,385–10,599; р=0,014). Количество копий ДНК цитомегаловируса у пациентов, перенёсших COVID-19, существенно выше в группе больных с неблагоприятным течением хронической сердечной недостаточности по сравнению с аналогичной группой, пациенты которой не переносили COVID-19, — 2238,5 (1888,5; 2647,5) и 1411,5 (1112,5; 1684,5) копий/мл соответственно (р &lt;0,001).</p> <p><bold>Вывод.</bold> Пациенты с хронической сердечной недостаточностью после перенесённой инфекции COVID-19 в течение 6 мес имеют высокий риск развития неблагоприятных сердечно-сосудистых событий на фоне активной цитомегаловирусной инфекции.</p></trans-abstract><kwd-group xml:lang="en"><kwd>COVID-19</kwd><kwd>cytomegalovirus</kwd><kwd>herpes virus</kwd><kwd>heart failure</kwd><kwd>prognosis</kwd></kwd-group><kwd-group xml:lang="ru"><kwd>COVID-19</kwd><kwd>цитомегаловирус</kwd><kwd>вирус герпеса</kwd><kwd>сердечная недостаточность</kwd><kwd>прогноз</kwd></kwd-group><funding-group/></article-meta></front><body></body><back><ref-list><ref id="B1"><label>1.</label><mixed-citation>Tufan A, Avanoğlu Güler A, Matucci-Cerinic M. 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