<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE article PUBLIC "-//NLM//DTD JATS (Z39.96) Journal Publishing DTD v1.3 20210610//EN" "JATS-journalpublishing1-3.dtd">
<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">pulmo</journal-id><journal-title-group><journal-title xml:lang="ru">Пульмонология</journal-title><trans-title-group xml:lang="en"><trans-title>PULMONOLOGIYA</trans-title></trans-title-group></journal-title-group><issn pub-type="ppub">0869-0189</issn><issn pub-type="epub">2541-9617</issn><publisher><publisher-name>Scientific and Practical Journal “PULMONOLOGIYA” LLC</publisher-name></publisher></journal-meta><article-meta><article-id pub-id-type="doi">10.18093/0869-0189-2023-33-4-472-487</article-id><article-id custom-type="elpub" pub-id-type="custom">pulmo-4189</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 STUDIES</subject></subj-group></article-categories><title-group><article-title>Влияние раннего назначения тоцилизумаба на прогрессирование дыхательной недостаточности у пациентов с COVID-19</article-title><trans-title-group xml:lang="en"><trans-title>Impact of early tocilizumab administration on the progression of respiratory failure in COVID-19 patients</trans-title></trans-title-group></title-group><contrib-group><contrib contrib-type="author" corresp="yes"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0002-3174-5000</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Мержоева</surname><given-names>З. М.</given-names></name><name name-style="western" xml:lang="en"><surname>Merzhoeva</surname><given-names>Z. M.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Мержоева Замира Магомедовна — кандидат медицинских наук, ассистент кафедры пульмонологии ФГАОУ ВО «ПМГМУ им. И.М. Сеченова» МЗ РФ (Сеченовский Университет); научный сотрудник ФГБУ «НИИ пульмонологии» ФМБА.</p><p>119048, Москва, ул. Трубецкая, 8, стр. 2; 115682, Москва, Ореховый бульвар, 28</p><p>тел.: (499) 246-76-83</p></bio><bio xml:lang="en"><p>Zamira M. Merzhoeva - Candidate of Medicine, Assistant, Department of Pulmonology, Federal State Autonomous Educational Institution of Higher Education I.M. Sechenov First Moscow State Medical University of the Ministry of Health of the Russian Federation (Sechenov University); Researcher, Federal State Budgetary Institution “Pulmonology Scientific Research Institute” under Federal Medical and Biological Agency of Russian Federation.</p><p>Trubetskaya ul. 8, build. 2, Moscow, 119048; Orekhovyy bul’var 28, Moscow, 115682</p><p>tel.: (499) 246-76-83</p></bio><email xlink:type="simple">zamira.merzhoeva@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/0000-0002-1484-092X</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Ярошецкий</surname><given-names>А. И.</given-names></name><name name-style="western" xml:lang="en"><surname>Yaroshetskiy</surname><given-names>A. I.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Ярошецкий Андрей Игоревич — доктор медицинских наук, профессор кафедры пульмонологии.</p><p>119048, Москва, ул. Трубецкая, 8, стр. 2</p><p>тел.: (495) 395-63-93</p></bio><bio xml:lang="en"><p>Andrey I. Yaroshetskiy - Doctor of Medicine, Professor, Department of Pulmonology, Federal State Autonomous Educational Institution of Higher Education I.M. Sechenov First Moscow State Medical University of the Ministry of Health of the Russian Federation (Sechenov University).</p><p>Trubetskaya ul. 8, build. 2, Moscow, 119048</p><p>tel.: (495) 395-63-93</p></bio><email xlink:type="simple">dr.intensivist@gmail.com</email><xref ref-type="aff" rid="aff-2"/></contrib><contrib contrib-type="author" corresp="yes"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0001-9642-5377</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Савко</surname><given-names>С. А.</given-names></name><name name-style="western" xml:lang="en"><surname>Savko</surname><given-names>S. A.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Савко Сергей Алексеевич — студент VI курса Института клинической медицины имени Н.В. Склифосовского.</p><p>119048, Москва, ул. Трубецкая, 8, стр. 2</p><p>тел.: (495) 395-63-93</p></bio><bio xml:lang="en"><p>Sergey A. Savko - 6th year student, Federal State Autonomous Educational Institution of Higher Education I.M. Sechenov First Moscow State Medical University of the Ministry of Health of the Russian Federation (Sechenov University).</p><p>Trubetskaya ul. 8, build. 2, Moscow, 119048</p><p>tel.: (495) 395-63-93</p></bio><email xlink:type="simple">bodybagontheriver@mail.ru</email><xref ref-type="aff" rid="aff-2"/></contrib><contrib contrib-type="author" corresp="yes"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0001-6986-1368</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Краснощекова</surname><given-names>А. П.</given-names></name><name name-style="western" xml:lang="en"><surname>Krasnoshchekova</surname><given-names>A. P.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Краснощекова Анна Павловна — врач анестезиолог-реаниматолог Университетской клинической больницы № 4 Клинического центра.</p><p>119048, Москва, ул. Трубецкая, 8, стр. 2</p><p>тел.: (495) 395-63-93</p></bio><bio xml:lang="en"><p>Anna P. Krasnoshchekova - Anesthesiologist-Resuscitator, University Clinical Hospital No.4, Clinical Center, Federal State Autonomous Educational Institution of Higher Education I.M. Sechenov First Moscow State Medical University of the Ministry of Health of the Russian Federation (Sechenov University).</p><p>Trubetskaya ul. 8, build. 2, Moscow, 119048</p><p>tel.: (495) 395-63-93</p></bio><email xlink:type="simple">krasnoshechka@icloud.com</email><xref ref-type="aff" rid="aff-2"/></contrib><contrib contrib-type="author" corresp="yes"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0001-9437-6591</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Мандель</surname><given-names>И. А.</given-names></name><name name-style="western" xml:lang="en"><surname>Mandel</surname><given-names>I. A.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Мандель Ирина Аркадьевна — кандидат медицинских наук, доцент кафедры анестезиологии-реаниматологии ФГАОУ ВО «ПМГМУ им. И.М. Сеченова» МЗ РФ (Сеченовский Университет); врач анестезиолог-реаниматолог Центра анестезиологии, реанимации и интенсивной терапии ФГБУ «ФНКЦ специализированных видов медицинской помощи и медицинских технологий ФМБА».</p><p>119048, Москва, ул. Трубецкая, 8, стр. 2; 115682, Москва, Ореховый бульвар, 28</p><p>тел.: (903) 952-83-37</p></bio><bio xml:lang="en"><p>Irina A. Mandel - Candidate of Medicine; Associate Professor, Department of Anesthesiology and Resuscitation, Federal State Autonomous Educational Institution of Higher Education I.M. Sechenov First Moscow State Medical University of the Ministry of Health of the Russian Federation (Sechenov University); Anesthesiologist-Resuscitator, Center for Anesthesiology, Resuscitation and Intensive Care, Federal State Budgetary Institution “Federal Scientific and Clinical Center for Specialized Types of Medical Care and Medical Technologies of the Federal Medical and Biological Agency of Russia”.</p><p>Trubetskaya ul. 8, build. 2, Moscow, 119048; Orekhovyy bul’var 28, Moscow, 115682</p><p>tel.: (903) 952-83-37</p></bio><email xlink:type="simple">irina.a.mandel@gmail.com</email><xref ref-type="aff" rid="aff-3"/></contrib><contrib contrib-type="author" corresp="yes"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0001-9357-4924</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Царева</surname><given-names>Н. А.</given-names></name><name name-style="western" xml:lang="en"><surname>Tsareva</surname><given-names>N. A.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Царева Наталья Анатольевна — кандидат медицинских наук, доцент кафедры пульмонологии Института клинической медицины имени Н.В. Склифосовского ФГАОУ ВО «ПМГМУ им. И.М. Сеченова» МЗ РФ (Сеченовский Университет); заведующая лабораторией ФГБУ «НИИ пульмонологии» ФМБА.</p><p>119048, Москва, ул. Трубецкая, 8, стр. 2; 115682, Москва, Ореховый бульвар, 28</p><p>тел.: (495) 395-63-93</p></bio><bio xml:lang="en"><p>Natal'ya A. Tsareva - Candidate of Medicine, Associate Professor, Department of Pulmonology, N.V. Sklifosovsky Institute of Clinical Medicine, Federal State Autonomous Educational Institution of Higher Education I.M. Sechenov First Moscow State Medical University of the Ministry of Health of the Russian Federation (Sechenov University); Head оf Laboratory, Federal State Budgetary Institution “Pulmonology Scientific Research Institute” under Federal Medical and Biological Agency of Russian Federation.</p><p>Trubetskaya ul. 8, build. 2, Moscow, 119048; Orekhovyy bul’var 28, Moscow, 115682</p><p>tel.: (495) 395-63-93</p></bio><email xlink:type="simple">n_tsareva@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/0000-0002-0685-4133</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Трушенко</surname><given-names>Н. В.</given-names></name><name name-style="western" xml:lang="en"><surname>Trushenko</surname><given-names>N. V.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Трушенко Наталья Владимировна — кандидат медицинских наук, ассистент кафедры пульмонологии Института клинической медицины имени Н.В. Склифосовского ФГАОУ ВО «ПМГМУ им. И.М. Сеченова» МЗ РФ (Сеченовский Университет), научный сотрудник научно-методического центра мониторинга и контроля болезней органов дыхания ФГБУ «НИИ пульмонологии» ФМБА.</p><p>119048, Москва, ул. Трубецкая, 8, стр. 2; 115682, Москва, Ореховый бульвар, 28</p><p>тел.: (495) 395-63-93</p></bio><bio xml:lang="en"><p>Natal'ya V. Trushenko - Candidate of Medicine, Assistant, Department of Pulmonology, N.V. Sklifosovsky Institute of Clinical Medicine, Federal State Autonomous Educational Institution of Higher Education I.M. Sechenov First Moscow State Medical University of the Ministry of Health of the Russian Federation (Sechenov University), Researcher, Scientific and Methodological Center for Monitoring and Control of Respiratory Diseases, Federal State Budgetary Institution “Pulmonology Scientific Research Institute” under Federal Medical and Biological Agency of Russian Federation.</p><p>Trubetskaya ul. 8, build. 2, Moscow, 119048; Orekhovyy bul’var 28, Moscow, 115682</p><p>tel.: (495) 395-63-93</p></bio><email xlink:type="simple">trushenko.natalia@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/0000-0002-4726-4906</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Нуралиева</surname><given-names>Г. С.</given-names></name><name name-style="western" xml:lang="en"><surname>Nuralieva</surname><given-names>G. S.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Нуралиева Галия Сериковна — кандидат медицинских наук, доцент кафедры пульмонологии Института клинической медицины имени Н.В. Склифосовского ФГАОУ ВО «ПМГМУ им. И.М. Сеченова» МЗ РФ (Сеченовский Университет); научный сотрудник лаборатории интенсивной терапии и дыхательной недостаточности ФГБУ «НИИ пульмонологии» ФМБА.</p><p>119048, Москва, ул. Трубецкая, 8, стр. 2; 115682, Москва, Ореховый бульвар, 28</p><p>тел.: (495) 395-63-93</p></bio><bio xml:lang="en"><p>Galiya S. Nuralieva - Candidate of Medicine, Associate Professor, Department of Pulmonology, N.V. Sklifosovsky Institute of Clinical Medicine, Federal State Autonomous Educational Institution of Higher Education I.M. Sechenov First Moscow State Medical University of the Ministry of Health of the Russian Federation (Sechenov University); Researcher, Laboratory of Intensive Care and Respiratory Failure, Federal State Budgetary Institution “Pulmonology Scientific Research Institute” under Federal Medical and Biological Agency of Russian Federation.</p><p>Trubetskaya ul. 8, build. 2, Moscow, 119048; Orekhovyy bul’var 28, Moscow, 115682</p><p>tel.: (495) 395-63-93</p></bio><email xlink:type="simple">galia32@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/0000-0002-5999-2150</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Авдеев</surname><given-names>С. Н.</given-names></name><name name-style="western" xml:lang="en"><surname>Avdeev</surname><given-names>S. N.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Авдеев Сергей Николаевич — доктор медицинских наук, профессор, академик Российской академии наук, проректор по научной и инновационной работе, заведующий кафедрой пульмонологии Института клинической медицины имени Н.В. Склифосовского ФГАОУ ВО «ПМГМУ им. И.М. Сеченова» МЗ РФ (Сеченовский Университет); ведущий научный сотрудник ФГБУ «НИИ пульмонологии» ФМБА; директор Национального медицинского исследовательского центра по профилю «Пульмонология», главный внештатный специалист-пульмонолог Министерства здравоохранения Российской Федерации.</p><p>119048, Москва, ул. Трубецкая, 8, стр. 2; 115682, Москва, Ореховый бульвар, 28</p><p>тел.: (499) 246-75-18</p></bio><bio xml:lang="en"><p>Sergey N. Avdeev - Doctor of Medicine, Professor, Academician of Russian Academy of Sciences, Vice-Rector for Research and Innovation, Head of the Department of Pulmonology, N.V. Sklifosovsky Institute of Clinical Medicine, Federal State Autonomous Educational Institution of Higher Education I.M. Sechenov First Moscow State Medical University of the Ministry of Health of the Russian Federation (Sechenov University); Leading Researcher, Federal State Budgetary Institution “Pulmonology Scientific Research Institute” under Federal Medical and Biological Agency of Russian Federation; Director, National Medical Research Center for the profile “Pulmonology”, Chief Freelance Pulmonologist of the Ministry of Health of the Russian Federation.</p><p>Trubetskaya ul. 8, build. 2, Moscow, 119048; Orekhovyy bul’var 28, Moscow, 115682</p><p>tel.: (499) 246-75-18</p></bio><email xlink:type="simple">serg_avdeev@list.ru</email><xref ref-type="aff" rid="aff-1"/></contrib></contrib-group><aff-alternatives id="aff-1"><aff xml:lang="ru"><institution>Федеральное государственное автономное образовательное учреждение высшего образования «Первый Московский государственный медицинский университет имени И.М. Сеченова» Министерства здравоохранения Российской Федерации (Сеченовский Университет); Федеральное государственное бюджетное учреждение «Научно-исследовательский институт пульмонологии» Федерального медико-биологического агентства России</institution><country>Россия</country></aff><aff xml:lang="en"><institution>Federal State Autonomous Educational Institution of Higher Education I.M. Sechenov First Moscow State Medical University of the Ministry of Health of the Russian Federation (Sechenov University); Federal State Budgetary Institution “Pulmonology Scientific Research Institute” under Federal Medical and Biological Agency of Russian Federation</institution><country>Russian Federation</country></aff></aff-alternatives><aff-alternatives id="aff-2"><aff xml:lang="ru"><institution>Федеральное государственное автономное образовательное учреждение высшего образования «Первый Московский государственный медицинский университет имени И.М. Сеченова» Министерства здравоохранения Российской Федерации (Сеченовский Университет)</institution><country>Россия</country></aff><aff xml:lang="en"><institution>Federal State Autonomous Educational Institution of Higher Education I.M. Sechenov First Moscow State Medical University of the Ministry of Health of the Russian Federation (Sechenov University)</institution><country>Russian Federation</country></aff></aff-alternatives><aff-alternatives id="aff-3"><aff xml:lang="ru"><institution>Федеральное государственное автономное образовательное учреждение высшего образования «Первый Московский государственный медицинский университет имени И.М. Сеченова» Министерства здравоохранения Российской Федерации (Сеченовский Университет); Федеральное государственное бюджетное учреждение «Федеральный научно-клинический центр специализированных видов медицинской помощи и медицинских технологий Федерального медико-биологического агентства»</institution><country>Россия</country></aff><aff xml:lang="en"><institution>Federal State Autonomous Educational Institution of Higher Education I.M. Sechenov First Moscow State Medical University of the Ministry of Health of the Russian Federation (Sechenov University); Federal State Budgetary Institution “Federal Scientific and Clinical Center for Specialized Types of Medical Care and Medical Technologies of the Federal Medical and Biological Agency of Russia”</institution><country>Russian Federation</country></aff></aff-alternatives><pub-date pub-type="collection"><year>2023</year></pub-date><pub-date pub-type="epub"><day>20</day><month>04</month><year>2023</year></pub-date><volume>33</volume><issue>4</issue><fpage>472</fpage><lpage>487</lpage><permissions><copyright-statement>Copyright &amp;#x00A9; Мержоева З.М., Ярошецкий А.И., Савко С.А., Краснощекова А.П., Мандель И.А., Царева Н.А., Трушенко Н.В., Нуралиева Г.С., Авдеев С.Н., 2023</copyright-statement><copyright-year>2023</copyright-year><copyright-holder xml:lang="ru">Мержоева З.М., Ярошецкий А.И., Савко С.А., Краснощекова А.П., Мандель И.А., Царева Н.А., Трушенко Н.В., Нуралиева Г.С., Авдеев С.Н.</copyright-holder><copyright-holder xml:lang="en">Merzhoeva Z.M., Yaroshetskiy A.I., Savko S.A., Krasnoshchekova A.P., Mandel I.A., Tsareva N.A., Trushenko N.V., Nuralieva G.S., Avdeev S.N.</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://journal.pulmonology.ru/pulm/article/view/4189">https://journal.pulmonology.ru/pulm/article/view/4189</self-uri><abstract><p>Оптимальный интервал для начала терапии тоцилизумабом у пациентов с COVID-19 (COronaVIrus Disease 2019) не определен. Целью исследования явилась оценка эффективности назначения тоцилизумаба в зависимости от продолжительности стойкой гипертермии &gt; 38 °С у пациентов с пневмонией, ассоциированной с SARS-CoV-2 (Severe Acute Respiratory Syndrome-related CoronaVirus 2), получающих терапию тоцилизумабом согласно Временным методическим рекомендациям Министерства здравоохранения Российской Федерации (версия на момент включения в исследование). Материалы и методы. В период с мая 2020 по май 2021 г. проведено ретроспективное когортное исследование с участием госпитализированных пациентов (n = 163) с SARS-CoV-2-ассоциированной пневмонией. Пациенты были ретроспективно распределены на 2 группы в зависимости от времени назначения тоцилизумаба (≤ 7 (n = 61) или ≥ 8 (n = 102) дней от начала заболевания). Результаты. У пациентов, получивших тоцилизумаб в первые 7 дней, ниже необходимость в СРАР-терапии (поддержание постоянного положительного давления в дыхательных путях (Continuous Positive Airway Pressure – СРАР)) (отношение рисков (ОР) – 0,129 (0,039–0,430); р = 0,001) на 3-и сутки после терапии тоцилизумабом; выше вероятность снижения объема поражения легких по данным компьютерной томографии &gt; 25 % через 1 нед. после применения тоцилизумаба (OP – 1,065 (1,036–1,093); р = 0,001); ниже вероятность насыщения гемоглобина кислородом &lt; 92 % на 3-й (OP – 0,807 (0,750–0,869); р = 0,001) и 7-й (OP – 0,825 (0,772–0,883); р = 0,001) дни после терапии тоцилизумабом. При необходимости в СРАР-терапии на 3-й день после введения тоцилизумаба каждый день задержки назначения препарата увеличивал риск неблагоприятного исхода в 18 раз (OP – 18,24 (5,328–62,438); р = 0,001). Продолжительность госпитализации была значимо ниже в группе раннего назначения препарата, чем в группе позднего назначения (10 (8,5–15) дней vs 13,5 (10–18) дня соответственно; р = 0,02). Летальность в группах была одинаковой (5 (8,2 %) vs 6 (5,9 %) пациентов соответственно; р = 0,748). Заключение. У пациентов с COVID-19 при развитии системного воспаления и поражения легких назначение тоцилизумаба в первые 7 дней от начала заболевания по сравнению с более поздним назначением может предотвратить необходимость эскалации респираторной поддержки и ускорить выздоровление.</p></abstract><trans-abstract xml:lang="en"><p>The optimal interval for initiating tocilizumab therapy in patients with COVID-19 (COronaVIrus Disease 2019) has not been determined. The aim of the study was to evaluate the effectiveness of prescribing tocilizumab depending on the duration of persistent hyperthermia &gt; 38 °С in patients with SARS-CoV-2 (Severe Acute Respiratory Syndrome-related CoronaVirus 2) associated pneumonia who received tocilizumab according to the Interim Guidelines of the Ministry of Health of the Russian Federation (version at the time of inclusion in the study). Methods. A retrospective cohort study was conducted in hospitalized patients (n = 163) with SARS-CoV-2-associated pneumonia from May 2020 to May 2021. Patients were retrospectively divided into 2 groups depending on the time of tocilizumab administration: ≤ 7 days (n = 61) or ≥ 8 days (n = 102) from the disease onset. Results. Patients who received tocilizumab in the first 7 days had the lower need for CPAP (Continuous Positive Airway Pressure) therapy on day 3 after tocilizumab therapy (HR (Hazard Ratio) – 0.129 (0.039 – 0.430); p = 0.001), a higher probability of a decrease in the volume of lung lesions on computed tomography &gt; 25% a week after the use of tocilizumab (HR – 1.065 (1.036 – 1.093); p = 0.001), the lower probability of hemoglobin oxygen saturation below 92% on day 3 (HR – 0.807 (0.750 – 0.869); p = 0.001), and day 7 (HR – 0.825 (0.772 – 0.883); p = 0.001) after tocilizumab therapy. If CPAP therapy was required on day 3 after administration of tocilizumab, each day of delay in prescribing the drug increased the risk of an adverse outcome 18-fold (HR – 18.24 (5.328 – 62.438); p = 0.001). The duration of hospitalization was significantly lower in the early group than in the late group (10 (8.5 – 15) vs 13.5 (10 – 18) days, respectively; p = 0.02). The mortality was similar (5 (8.2%) vs 6 (5.9%) patients, respectively; p = 0.748). Conclusion. The administration of tocilizumab in the first seven days from the onset of the disease in patients with COVID-19 who developed systemic inflammation and lung damage may prevent the need for escalation of respiratory support and accelerate recovery compared with the later tocilizumab administration.</p></trans-abstract><kwd-group xml:lang="ru"><kwd>COVID-19</kwd><kwd>SARS-CoV-2</kwd><kwd>пневмония</kwd><kwd>«цитокиновый шторм»</kwd><kwd>тоцилизумаб</kwd></kwd-group><kwd-group xml:lang="en"><kwd>COVID-19</kwd><kwd>SARS-CoV-2</kwd><kwd>pneumonia</kwd><kwd>cytokine storm</kwd><kwd>tocilizumab</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">Авдеев С.Н., Царева Н.А., Мержоева З.М. и др. Практические рекомендации по кислородотерапии и респираторной поддержке пациентов с COVID-19 на дореанимационном этапе. Пульмонология. 2020; 30 (2): 15–163. DOI: 10.18093/0869-0189-2020-30-2-151-163.</mixed-citation><mixed-citation xml:lang="en">Avdeev S.N., Tsareva N.A., Merzhoeva Z.M. et al. [Practical guidance for oxygen treatment and respiratory support of patients with COVID-19 infection before admission to intensive care unit]. Pul'monologiya. 2020; 30 (2): 15–163. DOI: 10.18093/0869-0189-2020-30-2-151-163 (in Russian).</mixed-citation></citation-alternatives></ref><ref id="cit2"><label>2</label><citation-alternatives><mixed-citation xml:lang="ru">Yang X., Yu Y., Xu J. et. al. Clinical course and outcomes of critically ill patients with SARS CoV-2 pneumonia in Wuhan, China: a single-centered, retrospective, observational study. Lancet Respir. Med. 2020; 8 (5): 475–481. DOI: 10.1016/S2213-2600(20)30079-5.</mixed-citation><mixed-citation xml:lang="en">Yang X., Yu Y., Xu J. et. al. Clinical course and outcomes of critically ill patients with SARS CoV-2 pneumonia in Wuhan, China: a single-centered, retrospective, observational study. Lancet Respir. Med. 2020; 8 (5): 475–481. DOI: 10.1016/S2213-2600(20)30079-5.</mixed-citation></citation-alternatives></ref><ref id="cit3"><label>3</label><citation-alternatives><mixed-citation xml:lang="ru">Зарянова Е.А., Осипова Г.Л., Осипова В.В. Респираторные вирусные инфекции, SARS-CoV-2 и хроническая обструктивная болезнь легких. Пульмонология. 2022; 32 (4): 616–625. DOI: 10.18093/0869-0189-2022-32-4-616-625.</mixed-citation><mixed-citation xml:lang="en">Zaryanova E.A., Osipova G.L., Osipova V.V. [Respiratory viral infections, SARS-СoV-2 and chronic obstructive pulmonary disease]. Pul'monologiya. 2022; 32 (4): 616–625. DOI: 10.18093/0869-0189-2022-32-4-616-625 (in Russian).</mixed-citation></citation-alternatives></ref><ref id="cit4"><label>4</label><citation-alternatives><mixed-citation xml:lang="ru">Клыпа Т.В., Бычинин М.В., Мандель И.А. и др. Клиническая характеристика пациентов с COVID-19, поступающих в отделение интенсивной терапии. Предикторы тяжелого течения. Клиническая практика. 2020; 11 (2): 6–20. DOI: 10.17816/clinpract34182.</mixed-citation><mixed-citation xml:lang="en">Klypa T.V., Bychinin M.V., Mandel' I.A. et al. [Clinical characteristics of patients admitted to an ICU with COVID-19. Predictors of the severe disease]. Klinicheskaya praktika. 2020; 11 (2): 6–20. DOI: 10.17816/clinpract34182 (in Russian).</mixed-citation></citation-alternatives></ref><ref id="cit5"><label>5</label><citation-alternatives><mixed-citation xml:lang="ru">De Stefano L., Bobbio-Pallavicini F., Manzo A. et al. A “window of therapeutic opportunity” for anti-cytokine therapy in patients with coronavirus disease 2019. Front. Immunol. 2020; 11: 572635. DOI: 10.3389/fimmu.2020.572635.</mixed-citation><mixed-citation xml:lang="en">De Stefano L., Bobbio-Pallavicini F., Manzo A. et al. A “window of therapeutic opportunity” for anti-cytokine therapy in patients with coronavirus disease 2019. Front. Immunol. 2020; 11: 572635. DOI: 10.3389/fimmu.2020.572635.</mixed-citation></citation-alternatives></ref><ref id="cit6"><label>6</label><citation-alternatives><mixed-citation xml:lang="ru">Murthy H., Iqbal M., Chavez J.C., Kharfan-Dabaja M.A. Cytokine release syndrome: current perspectives. Immunotargets Ther. 2019; 8: 43–52. DOI: 10.2147/ITT.S202015.</mixed-citation><mixed-citation xml:lang="en">Murthy H., Iqbal M., Chavez J.C., Kharfan-Dabaja M.A. Cytokine release syndrome: current perspectives. Immunotargets Ther. 2019; 8: 43–52. DOI: 10.2147/ITT.S202015.</mixed-citation></citation-alternatives></ref><ref id="cit7"><label>7</label><citation-alternatives><mixed-citation xml:lang="ru">Ruan Q., Yang K., Wang W. et al. Clinical predictors of mortality due to COVID-19 based on an analysis of data of 150 patients from Wuhan, China. Intensive Care Med. 2020; 46 (5): 846–848. DOI: 10.1007/s00134-020-05991-x.9.</mixed-citation><mixed-citation xml:lang="en">Ruan Q., Yang K., Wang W. et al. Clinical predictors of mortality due to COVID-19 based on an analysis of data of 150 patients from Wuhan, China. Intensive Care Med. 2020; 46 (5): 846–848. DOI: 10.1007/s00134-020-05991-x.9.</mixed-citation></citation-alternatives></ref><ref id="cit8"><label>8</label><citation-alternatives><mixed-citation xml:lang="ru">Ramos-Casals M., Brito-Zeron P., Lopez-Guillermo A. et al. Adult haemophagocytic syndrome. Lancet. 2014; 383 (9927): 1503–1516. DOI: 10.1016/S0140-6736(13)61048-X.</mixed-citation><mixed-citation xml:lang="en">Ramos-Casals M., Brito-Zeron P., Lopez-Guillermo A. et al. Adult haemophagocytic syndrome. Lancet. 2014; 383 (9927): 1503–1516. DOI: 10.1016/S0140-6736(13)61048-X.</mixed-citation></citation-alternatives></ref><ref id="cit9"><label>9</label><citation-alternatives><mixed-citation xml:lang="ru">Karakike E., Giamarellos-Bourboulis E.J. Macrophage activation-like syndrome: a distinct entity leading to early death in sepsis. Front. Immunol. 2019; 10: 55. DOI: 10.3389/fimmu.2019.00055.</mixed-citation><mixed-citation xml:lang="en">Karakike E., Giamarellos-Bourboulis E.J. Macrophage activation-like syndrome: a distinct entity leading to early death in sepsis. Front. Immunol. 2019; 10: 55. DOI: 10.3389/fimmu.2019.00055.</mixed-citation></citation-alternatives></ref><ref id="cit10"><label>10</label><citation-alternatives><mixed-citation xml:lang="ru">Luo P., Liu Y., Qiu L. et al. Tocilizumab treatment in COVID-19: a single center experience. J. Med. Virol. 2020; 92 (7): 814–818. DOI: 10.1002/jmv.25801.</mixed-citation><mixed-citation xml:lang="en">Luo P., Liu Y., Qiu L. et al. Tocilizumab treatment in COVID-19: a single center experience. J. Med. Virol. 2020; 92 (7): 814–818. DOI: 10.1002/jmv.25801.</mixed-citation></citation-alternatives></ref><ref id="cit11"><label>11</label><citation-alternatives><mixed-citation xml:lang="ru">Stone J.H., Frigault M.J., Serling-Boyd N.J. et al. Efficacy of tocilizumab in patients hospitalized with COVID-19. N. Engl. J. Med. 2020; 383 (24): 2333–2344. DOI: 10.1056/NEJMoa2028836.</mixed-citation><mixed-citation xml:lang="en">Stone J.H., Frigault M.J., Serling-Boyd N.J. et al. Efficacy of tocilizumab in patients hospitalized with COVID-19. N. Engl. J. Med. 2020; 383 (24): 2333–2344. DOI: 10.1056/NEJMoa2028836.</mixed-citation></citation-alternatives></ref><ref id="cit12"><label>12</label><citation-alternatives><mixed-citation xml:lang="ru">Malgie J., Schoones J.W., Pijls B.G. Decreased mortality in COVID-19 patients treated with Tocilizumab: a rapid systematic review and meta-analysis of observational studies. Clin. Infect. Dis. 2021: 72 (11): e742–749. DOI: 10.1093/cid/ciaa1445.</mixed-citation><mixed-citation xml:lang="en">Malgie J., Schoones J.W., Pijls B.G. Decreased mortality in COVID-19 patients treated with Tocilizumab: a rapid systematic review and meta-analysis of observational studies. Clin. Infect. Dis. 2021: 72 (11): e742–749. DOI: 10.1093/cid/ciaa1445.</mixed-citation></citation-alternatives></ref><ref id="cit13"><label>13</label><citation-alternatives><mixed-citation xml:lang="ru">Hernández-Mora M.G., Cabello Úbeda A., Prieto-Pérez L. et al. Compassionate use of tocilizumab in severe SARS-CoV2 pneumonia. Int. J. Infect. Dis. 2021; 102: 303–309. DOI: 10.1016/j.ijid.2020.10.045.</mixed-citation><mixed-citation xml:lang="en">Hernández-Mora M.G., Cabello Úbeda A., Prieto-Pérez L. et al. Compassionate use of tocilizumab in severe SARS-CoV2 pneumonia. Int. J. Infect. Dis. 2021; 102: 303–309. DOI: 10.1016/j.ijid.2020.10.045.</mixed-citation></citation-alternatives></ref><ref id="cit14"><label>14</label><citation-alternatives><mixed-citation xml:lang="ru">Sinha P., Mostaghim A., Bielick C.G. et al. Early administration of interleukin-6 inhibitors for patients with severe COVID-19 disease is associated with decreased intubation, reduced mortality, and increased discharge. Int. J. Infect. Dis. 2020; 99: 28–33. DOI: 10.1016/j.ijid.2020.07.023.</mixed-citation><mixed-citation xml:lang="en">Sinha P., Mostaghim A., Bielick C.G. et al. Early administration of interleukin-6 inhibitors for patients with severe COVID-19 disease is associated with decreased intubation, reduced mortality, and increased discharge. Int. J. Infect. Dis. 2020; 99: 28–33. DOI: 10.1016/j.ijid.2020.07.023.</mixed-citation></citation-alternatives></ref><ref id="cit15"><label>15</label><citation-alternatives><mixed-citation xml:lang="ru">Angriman F., Ferreyro B.L., Burry L. et al. Interleukin-6 receptor blockade in patients with COVID-19: placing clinical trials into context. Lancet Respir. Med. 2021; 9 (6): 655–664. DOI: 10.1016/S2213-2600(21)00139-9.</mixed-citation><mixed-citation xml:lang="en">Angriman F., Ferreyro B.L., Burry L. et al. Interleukin-6 receptor blockade in patients with COVID-19: placing clinical trials into context. Lancet Respir. Med. 2021; 9 (6): 655–664. DOI: 10.1016/S2213-2600(21)00139-9.</mixed-citation></citation-alternatives></ref><ref id="cit16"><label>16</label><citation-alternatives><mixed-citation xml:lang="ru">RECOVERY Collaborative Group. Tocilizumab in patients admitted to hospital with COVID-19 (RECOVERY): a randomised, controlled, open-label, platform trial. Lancet. 2021; 397 (10285): 1637–1645. DOI: 10.1016/S0140-6736(21)00676-0.</mixed-citation><mixed-citation xml:lang="en">RECOVERY Collaborative Group. Tocilizumab in patients admitted to hospital with COVID-19 (RECOVERY): a randomised, controlled, open-label, platform trial. Lancet. 2021; 397 (10285): 1637–1645. DOI: 10.1016/S0140-6736(21)00676-0.</mixed-citation></citation-alternatives></ref><ref id="cit17"><label>17</label><citation-alternatives><mixed-citation xml:lang="ru">Winthrop K.L., Mariette X. To immunosuppress: whom, when and how? That is the question with COVID-19. Ann. Rheum. Dis. 2020; 79 (9): 1129–1131. DOI: 10.1136/annrheumdis-2020-218694.</mixed-citation><mixed-citation xml:lang="en">Winthrop K.L., Mariette X. To immunosuppress: whom, when and how? That is the question with COVID-19. Ann. Rheum. Dis. 2020; 79 (9): 1129–1131. DOI: 10.1136/annrheumdis-2020-218694.</mixed-citation></citation-alternatives></ref><ref id="cit18"><label>18</label><citation-alternatives><mixed-citation xml:lang="ru">Министерство здравоохранения РФ. Временные методические рекомендации: Профилактика, диагностика и лечение новой коронавирусной инфекции (COVID 19). Версия 14 (27.12.2021). Доступно на: https://xn--80aesfpebagmfblc0a.xn--p1ai/ai/doc/1213/attach/vmr_COVID-19_V14_27-12-2021.pdf</mixed-citation><mixed-citation xml:lang="en">Ministry of Health of the Russian Federation. [Temporary guidelines: Prevention, diagnosis and new treatment of coronavirus infection (COVID 19)]. Version 14 (December 27, 2021). Available at: https://xn--80aesfpebagmfblc0a.xn--p1ai/ai/doc/1213/attach/vmr_COVID-19_V14_27-12-2021.pdf (in Russian).</mixed-citation></citation-alternatives></ref><ref id="cit19"><label>19</label><citation-alternatives><mixed-citation xml:lang="ru">Klopfenstein T., Conrozier T., Kadiane-Oussou N.J. et al. Is there still a place for tocilizumab in Coronavirus disease 2019? Open Forum Infect. Dis. 2021; 8 (2): ofab013. DOI: 10.1093/ofid/ofab013.</mixed-citation><mixed-citation xml:lang="en">Klopfenstein T., Conrozier T., Kadiane-Oussou N.J. et al. Is there still a place for tocilizumab in Coronavirus disease 2019? Open Forum Infect. Dis. 2021; 8 (2): ofab013. DOI: 10.1093/ofid/ofab013.</mixed-citation></citation-alternatives></ref><ref id="cit20"><label>20</label><citation-alternatives><mixed-citation xml:lang="ru">Fisher M.J., Raymundo L.A.M., Monteforte M. et al. Tocilizumab in the treatment of critical COVID-19 pneumonia: A retrospective cohort study of mechanically ventilated patients. Int. J. Inf. Dis. 2021; 103: 536–539. DOI: 10.1016/j.ijid.2020.12.021.</mixed-citation><mixed-citation xml:lang="en">Fisher M.J., Raymundo L.A.M., Monteforte M. et al. Tocilizumab in the treatment of critical COVID-19 pneumonia: A retrospective cohort study of mechanically ventilated patients. Int. J. Inf. Dis. 2021; 103: 536–539. DOI: 10.1016/j.ijid.2020.12.021.</mixed-citation></citation-alternatives></ref><ref id="cit21"><label>21</label><citation-alternatives><mixed-citation xml:lang="ru">Gupta S., Wang W., Hayek S.S. et al. Association between early treatment with tocilizumab and mortality among critically ill patients with COVID-19. JAMA Intern. Med. 2021; 181: 41–51. DOI: 10.1001/jamainternmed.2020.6252.</mixed-citation><mixed-citation xml:lang="en">Gupta S., Wang W., Hayek S.S. et al. Association between early treatment with tocilizumab and mortality among critically ill patients with COVID-19. JAMA Intern. Med. 2021; 181: 41–51. DOI: 10.1001/jamainternmed.2020.6252.</mixed-citation></citation-alternatives></ref><ref id="cit22"><label>22</label><citation-alternatives><mixed-citation xml:lang="ru">REMAP-CAP Investigators; Gordon A.C., Mouncey P.R., Al-Beidh F. et al. Interleukin-6 receptor antagonists in critically Ill patients with COVID-19. N. Engl. J. Med. 2021; 384 (16): 1491–1502. 10.1056/nejmoa2100433.</mixed-citation><mixed-citation xml:lang="en">REMAP-CAP Investigators; Gordon A.C., Mouncey P.R., Al-Beidh F. et al. Interleukin-6 receptor antagonists in critically Ill patients with COVID-19. N. Engl. J. Med. 2021; 384 (16): 1491–1502. 10.1056/nejmoa2100433.</mixed-citation></citation-alternatives></ref><ref id="cit23"><label>23</label><citation-alternatives><mixed-citation xml:lang="ru">Mehta P., McAuley D.F., Brown M. et al. COVID-19: consider cytokine storm syndromes and immunosuppression. Lancet. 2020; 395 (10229): 1033–1034. DOI: 10.1016/S0140-6736(20)30628-0.</mixed-citation><mixed-citation xml:lang="en">Mehta P., McAuley D.F., Brown M. et al. COVID-19: consider cytokine storm syndromes and immunosuppression. Lancet. 2020; 395 (10229): 1033–1034. DOI: 10.1016/S0140-6736(20)30628-0.</mixed-citation></citation-alternatives></ref><ref id="cit24"><label>24</label><citation-alternatives><mixed-citation xml:lang="ru">Mariette X., Hermine O., Tharaux P.L. et al. Effectiveness of tocilizumab in patients hospitalized with COVID-19: a follow-up of the CORIMUNO-TOCI-1 randomized clinical trial. JAMA Intern. Med. 2021; 181 (9): 1241–1243. DOI: 10.1001/jamainternmed.2021.2209.</mixed-citation><mixed-citation xml:lang="en">Mariette X., Hermine O., Tharaux P.L. et al. Effectiveness of tocilizumab in patients hospitalized with COVID-19: a follow-up of the CORIMUNO-TOCI-1 randomized clinical trial. JAMA Intern. Med. 2021; 181 (9): 1241–1243. DOI: 10.1001/jamainternmed.2021.2209.</mixed-citation></citation-alternatives></ref><ref id="cit25"><label>25</label><citation-alternatives><mixed-citation xml:lang="ru">WHO rapid evidence appraisal for COVID-19 Therapies (REACT) working group; Shankar-Hari M., Vale C.L., Godolphin P.J. et al. Association between administration of IL-6 antagonists and mortality among patients hospitalized for COVID-19: a meta-analysis. JAMA. 2021; 326 (6): 499–518. DOI: 10.1001/jama.2021.11330.</mixed-citation><mixed-citation xml:lang="en">WHO rapid evidence appraisal for COVID-19 Therapies (REACT) working group; Shankar-Hari M., Vale C.L., Godolphin P.J. et al. Association between administration of IL-6 antagonists and mortality among patients hospitalized for COVID-19: a meta-analysis. JAMA. 2021; 326 (6): 499–518. DOI: 10.1001/jama.2021.11330.</mixed-citation></citation-alternatives></ref><ref id="cit26"><label>26</label><citation-alternatives><mixed-citation xml:lang="ru">Caricchio R., Gallucci M., Dass C. et al. Preliminary predictive criteria for COVID-19 cytokine storm. Ann. Rheum. Dis. 2021; 80 (1): 88–95. DOI: 10.1136/annrheumdis-2020-218323.</mixed-citation><mixed-citation xml:lang="en">Caricchio R., Gallucci M., Dass C. et al. Preliminary predictive criteria for COVID-19 cytokine storm. Ann. Rheum. Dis. 2021; 80 (1): 88–95. DOI: 10.1136/annrheumdis-2020-218323.</mixed-citation></citation-alternatives></ref><ref id="cit27"><label>27</label><citation-alternatives><mixed-citation xml:lang="ru">Durán-Méndez A., Aguilar-Arroyo A.D., Vivanco-Gómez E. et al. Tocilizumab reduces COVID-19 mortality and pathology in a dose and timing-dependent fashion: a multi-centric study. Sci. Rep. 2021; 11 (1): 19728. DOI: 10.1038/s41598-021-99291-z.</mixed-citation><mixed-citation xml:lang="en">Durán-Méndez A., Aguilar-Arroyo A.D., Vivanco-Gómez E. et al. Tocilizumab reduces COVID-19 mortality and pathology in a dose and timing-dependent fashion: a multi-centric study. Sci. Rep. 2021; 11 (1): 19728. DOI: 10.1038/s41598-021-99291-z.</mixed-citation></citation-alternatives></ref><ref id="cit28"><label>28</label><citation-alternatives><mixed-citation xml:lang="ru">Rubio-Rivas M., Forero C.G., Mora-Luján J.M. et al. Beneficial and harmful outcomes of tocilizumab in severe COVID-19: a systematic review and meta-analysis. Pharmacotherapy. 2021; 41 (11): 884–906. DOI: 10.1002/phar.2627.</mixed-citation><mixed-citation xml:lang="en">Rubio-Rivas M., Forero C.G., Mora-Luján J.M. et al. Beneficial and harmful outcomes of tocilizumab in severe COVID-19: a systematic review and meta-analysis. Pharmacotherapy. 2021; 41 (11): 884–906. DOI: 10.1002/phar.2627.</mixed-citation></citation-alternatives></ref><ref id="cit29"><label>29</label><citation-alternatives><mixed-citation xml:lang="ru">Moreno Diaz R., Amor García M.A., Teigell Muñoz F.J. et al. Does timing matter on tocilizumab administration? Clinical, analytical and radiological outcomes in COVID-19. Eur. J. Hosp. Pharm. 2022; 29 (6): 340–345. DOI: 10.1136/ejhpharm-2020-002669.</mixed-citation><mixed-citation xml:lang="en">Moreno Diaz R., Amor García M.A., Teigell Muñoz F.J. et al. Does timing matter on tocilizumab administration? Clinical, analytical and radiological outcomes in COVID-19. Eur. J. Hosp. Pharm. 2022; 29 (6): 340–345. DOI: 10.1136/ejhpharm-2020-002669.</mixed-citation></citation-alternatives></ref><ref id="cit30"><label>30</label><citation-alternatives><mixed-citation xml:lang="ru">Khiali S., Entezari-Maleki T. Tocilizumab in COVID-19 management: addressing time of starting treatment. Eur. J. Hosp. Pharm. 2023; 30 (2): e9. DOI: 10.1136/ejhpharm-2021-003149.</mixed-citation><mixed-citation xml:lang="en">Khiali S., Entezari-Maleki T. Tocilizumab in COVID-19 management: addressing time of starting treatment. Eur. J. Hosp. Pharm. 2023; 30 (2): e9. DOI: 10.1136/ejhpharm-2021-003149.</mixed-citation></citation-alternatives></ref><ref id="cit31"><label>31</label><citation-alternatives><mixed-citation xml:lang="ru">Moiseev S., Avdeev S., Tao E. et al. Neither earlier nor late tocilizumab improved outcomes in the intensive care unit patients with COVID-19 in a retrospective cohort study. Ann. Rheum. Dis. 2023; 82 (1): e3. DOI: 10.1136/annrheumdis-2020-219265.</mixed-citation><mixed-citation xml:lang="en">Moiseev S., Avdeev S., Tao E. et al. Neither earlier nor late tocilizumab improved outcomes in the intensive care unit patients with COVID-19 in a retrospective cohort study. Ann. Rheum. Dis. 2023; 82 (1): e3. DOI: 10.1136/annrheumdis-2020-219265.</mixed-citation></citation-alternatives></ref><ref id="cit32"><label>32</label><citation-alternatives><mixed-citation xml:lang="ru">Фомина Д.С., Потешкина Н.Г., Белоглазова И.П. и др. Сравнительный анализ применения тоцилизумаба при тяжелых COVID-19-ассоциированных пневмониях у пациентов разных возрастных групп. Пульмонология. 2020; 30 (2): 164–172. DOI: 10.18093/0869-0189-2020-30-2-164-172.</mixed-citation><mixed-citation xml:lang="en">Fomina D.S., Poteshkina N.G., Beloglazova I.P. et al. [Comparative analysis of tocilizumab in severe COVID-19-associated pneumonia in patients of different age groups]. Pul'monologiya. 2020; 30 (2): 164–172. DOI: 10.18093/0869-0189-2020-30-2-164-172 (in Russian).</mixed-citation></citation-alternatives></ref><ref id="cit33"><label>33</label><citation-alternatives><mixed-citation xml:lang="ru">Nuñez-Ramos J.A., Forero Illera E., Quintero Barrios J.L. et al. Prognostic factors in hospitalized COVID-19 patients at the start of the pandemic in Colombia: a retrospective cohort study. Cureus. 2021; 13 (5): e14865. DOI: 10.7759/cureus.14865.</mixed-citation><mixed-citation xml:lang="en">Nuñez-Ramos J.A., Forero Illera E., Quintero Barrios J.L. et al. Prognostic factors in hospitalized COVID-19 patients at the start of the pandemic in Colombia: a retrospective cohort study. Cureus. 2021; 13 (5): e14865. DOI: 10.7759/cureus.14865.</mixed-citation></citation-alternatives></ref><ref id="cit34"><label>34</label><citation-alternatives><mixed-citation xml:lang="ru">Круглова Т.С., Фомина Д.С., Потешкина Н.Г. и др. Критерии оптимального применения блокаторов рецепторов интерлейкина-6 у пациентов с COVID-19. Терапевтический архив. 2021; 93 (11): 1316–1324. DOI: 10.26442/00403660.2021.11.201248.</mixed-citation><mixed-citation xml:lang="en">Kruglova T.S., Fomina D.S., Poteshkina N.G. et al. [Criteria for the optimal use of interleukin-6 receptor blockers in patients with COVID-19]. Terapevticheskiy arkhiv. 2021; 93 (11): 1316–1324. DOI: 10.26442/00403660.2021.11.201248 (in Russian).</mixed-citation></citation-alternatives></ref><ref id="cit35"><label>35</label><citation-alternatives><mixed-citation xml:lang="ru">Mohiuddin Chowdhury A.T.M., Kamal A., Abbas K.U. et al. Efficacy and outcome of remdesivir and tocilizumab combination against dexamethasone for the treatment of severe COVID-19: a randomized controlled trial. Front. Pharmacol. 2022; 13: 690726. DOI: 10.3389/fphar.2022.690726.</mixed-citation><mixed-citation xml:lang="en">Mohiuddin Chowdhury A.T.M., Kamal A., Abbas K.U. et al. Efficacy and outcome of remdesivir and tocilizumab combination against dexamethasone for the treatment of severe COVID-19: a randomized controlled trial. Front. Pharmacol. 2022; 13: 690726. DOI: 10.3389/fphar.2022.690726.</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>
