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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">medsovet</journal-id><journal-title-group><journal-title xml:lang="ru">Медицинский Совет</journal-title><trans-title-group xml:lang="en"><trans-title>Meditsinskiy sovet = Medical Council</trans-title></trans-title-group></journal-title-group><issn pub-type="ppub">2079-701X</issn><issn pub-type="epub">2658-5790</issn><publisher><publisher-name>REMEDIUM GROUP Ltd.</publisher-name></publisher></journal-meta><article-meta><article-id pub-id-type="doi">10.21518/ms2023-389</article-id><article-id custom-type="elpub" pub-id-type="custom">medsovet-7857</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>ЗАБОЛЕВАНИЯ БИЛИАРНОЙ СИСТЕМЫ И ПЕЧЕНИ</subject></subj-group><subj-group subj-group-type="section-heading" xml:lang="en"><subject>DISEASES OF THE BILIARY SYSTEM AND LIVER</subject></subj-group></article-categories><title-group><article-title>Влияние плотности печени на тяжесть течения COVID-19: ретроспективное когортное исследование</article-title><trans-title-group xml:lang="en"><trans-title>Influence of liver attenuation on the severity of course COVID-19: a retrospective cohort study</trans-title></trans-title-group></title-group><contrib-group><contrib contrib-type="author" corresp="yes"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0002-8521-4045</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Шумская</surname><given-names>Ю. Ф.</given-names></name><name name-style="western" xml:lang="en"><surname>Shumskaya</surname><given-names>Yu. F.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Шумская Юлия Федоровна - младший научный сотрудник отдела научных медицинских  исследований, НПКЦ диагностики и  телемедицинских технологий; ассистент кафедры госпитальной терапии №1, Институт клинической   медицины имени Н.В. Склифосовского, ПМГМУ им. И.М. Сеченова (Сеченовский Университет).</p><p>127051, Москва, ул. Петровка, д. 24, стр. 1; 119991, Москва, ул. Трубецкая, д. 8, стр. 2</p></bio><bio xml:lang="en"><p>Yuliya F. Shumskaya - Junior Researcher at Medical Research Department, Research and Practical Clinical Center for Diagnostics and Telemedicine Technologies; Assistant, Chair of Hospital Therapy No. 1, Institute of Clinical Medicine named after N.V. Sklifosovsky, Sechenov First Moscow State Medical University (Sechenov University).</p><p>24, Petrovka St., Bldg. 1, Moscow, 127051; 8, Trubetskaya St., Bldg. 2, Moscow, 119991</p></bio><email xlink:type="simple">shumskayayf@zdrav.mos.ru</email><xref ref-type="aff" rid="aff-1"/></contrib><contrib contrib-type="author" corresp="yes"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0001-5161-6540</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Гончар</surname><given-names>А. П.</given-names></name><name name-style="western" xml:lang="en"><surname>Gonchar</surname><given-names>A. P.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Гончар Анна Павловна - младший научный сотрудник сектора исследований в лучевой диагностике.</p><p>127051, Москва, ул. Петровка, д. 24, стр. 1</p></bio><bio xml:lang="en"><p>Anna P. Gonchar - Junior Researcher at Medical Research Department, Research and Practical Clinical Center for Diagnostics and Telemedicine Technologies.</p><p>24, Petrovka St., Bldg. 1, Moscow, 127051</p></bio><email xlink:type="simple">a.gonchar@npcmr.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/0000-0001-9337-7453</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Мнацаканян</surname><given-names>М. Г.</given-names></name><name name-style="western" xml:lang="en"><surname>Mnatsakanyan</surname><given-names>M. G.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Мнацаканян Марина Генриковна - доктор медицинских наук, профессор кафедры госпитальной терапии №1, заведующая отделением гастроэнтерологии Университетской клинической больницы №1 Института клинической медицины им. Н.В. Склифосовского, ПМГМУ им. И.М. Сеченова (Сеченовский Университет).</p><p>119991, Москва, ул. Трубецкая, д. 8, стр. 2</p></bio><bio xml:lang="en"><p>Marina G. Mnatsakanyan - Dr. Sci. (Med.), Professor of the Department of Hospital Therapy No. 1, Head of the Department of Gastroenterology, Institute of Clinical Medicine named after N.V. Sklifosovsky, Sechenov First Moscow State Medical University (Sechenov University).</p><p>8, Trubetskaya St., Bldg. 2, Moscow, 119991</p></bio><email xlink:type="simple">mnatsakanyan08@mail.ru</email><xref ref-type="aff" rid="aff-3"/></contrib><contrib contrib-type="author" corresp="yes"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0002-2681-9378</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Блохин</surname><given-names>И. A.</given-names></name><name name-style="western" xml:lang="en"><surname>Blokhin</surname><given-names>I. A.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Блохин Иван Андреевич - начальник сектора исследований в лучевой диагностике.</p><p>127051, Москва, ул. Петровка, д. 24, стр. 1</p></bio><bio xml:lang="en"><p>Ivan A. Blokhin - Head of Diagnostic Imaging Research Subdivision, Research and Practical Clinical Center for Diagnostics and Telemedicine Technologies.</p><p>24, Petrovka St., Bldg. 1, Moscow, 127051</p></bio><email xlink:type="simple">BlokhinIA@zdrav.mos.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/0000-0002-9661-0254</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Решетников</surname><given-names>Р. В.</given-names></name><name name-style="western" xml:lang="en"><surname>Reshetnikov</surname><given-names>R. V.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Решетников Роман Владимирович – кандидат физико-математических наук, начальник отдела научных медицинских исследований.</p><p>127051, Москва, ул. Петровка, д. 24, стр. 1</p></bio><bio xml:lang="en"><p>Roman V. Reshetnikov - Cand. Sci. (Physical and Mathematical), Department Head of Medical Research, Research and Practical Clinical Center for Diagnostics and Telemedicine  Technologies.</p><p>24, Petrovka St., Bldg. 1, Moscow, 127051</p></bio><email xlink:type="simple">r.reshetnikov@npcmr.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/0000-0002-5283-5961</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Васильев</surname><given-names>Ю. А.</given-names></name><name name-style="western" xml:lang="en"><surname>Vasilev</surname><given-names>Yu. A.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Васильев Юрий Александрович - кандидат медицинских наук, директор, НПКЦ ДиТ ДЗМ.</p><p>127051, Москва,  ул. Петровка, д. 24, стр. 1</p></bio><bio xml:lang="en"><p>Yuriy A. Vasilev - Cand. Sci. (Med.), CEO of Research and Practical Clinical Center for Diagnostics and Telemedicine Technologies.</p><p>24, Petrovka St., Bldg. 1, Moscow, 127051</p></bio><email xlink:type="simple">VasilevYA1@zdrav.mos.ru</email><xref ref-type="aff" rid="aff-2"/></contrib></contrib-group><aff-alternatives id="aff-1"><aff xml:lang="ru"><institution>Научно-практический клинический центр диагностики и телемедицинских технологий Департамента здравоохранения г. Москвы; Первый Московский государственный медицинский университет имени И.М. Сеченова (Сеченовский Университет)</institution><country>Россия</country></aff><aff xml:lang="en"><institution>Research and Practical Clinical Center for Diagnostics and Telemedicine Technologies of the Moscow Health Care Department; Sechenov First Moscow State Medical University (Sechenov University)</institution><country>Russian Federation</country></aff></aff-alternatives><aff-alternatives id="aff-2"><aff xml:lang="ru"><institution>Научно-практический клинический центр диагностики и телемедицинских технологий Департамента здравоохранения г. Москвы</institution><country>Россия</country></aff><aff xml:lang="en"><institution>Research and Practical Clinical Center for Diagnostics and Telemedicine Technologies of the Moscow Health Care Department</institution><country>Russian Federation</country></aff></aff-alternatives><aff-alternatives id="aff-3"><aff xml:lang="ru"><institution>Первый Московский государственный медицинский  университет имени    И.М. Сеченова (Сеченовский Университет)</institution><country>Россия</country></aff><aff xml:lang="en"><institution>Sechenov First Moscow State Medical University (Sechenov University)</institution><country>Russian Federation</country></aff></aff-alternatives><pub-date pub-type="collection"><year>2023</year></pub-date><pub-date pub-type="epub"><day>04</day><month>11</month><year>2023</year></pub-date><volume>0</volume><issue>18</issue><fpage>68</fpage><lpage>74</lpage><permissions><copyright-statement>Copyright &amp;#x00A9; Шумская Ю.Ф., Гончар А.П., Мнацаканян М.Г., Блохин И.A., Решетников Р.В., Васильев Ю.А., 2023</copyright-statement><copyright-year>2023</copyright-year><copyright-holder xml:lang="ru">Шумская Ю.Ф., Гончар А.П., Мнацаканян М.Г., Блохин И.A., Решетников Р.В., Васильев Ю.А.</copyright-holder><copyright-holder xml:lang="en">Shumskaya Y.F., Gonchar A.P., Mnatsakanyan M.G., Blokhin I.A., Reshetnikov R.V., Vasilev Y.A.</copyright-holder><license xml:lang="ru" license-type="creative-commons-attribution" xlink:href="https://creativecommons.org/licenses/by/4.0/" xlink:type="simple"><license-p>Данная работа распространяется под лицензией Creative Commons Attribution 4.0.</license-p></license><license xml:lang="en" license-type="creative-commons-attribution" xlink:href="https://creativecommons.org/licenses/by/4.0/" xlink:type="simple"><license-p>This work is licensed under a Creative Commons Attribution 4.0 License.</license-p></license></permissions><self-uri xlink:href="https://www.med-sovet.pro/jour/article/view/7857">https://www.med-sovet.pro/jour/article/view/7857</self-uri><abstract><sec><title>Введение</title><p>Введение.  Показана широкая распространенность сниженной плотности  печени среди пациентов с  COVID-19, однако убедительных данных   о  причине  этого  феномена нет. До сих  пор   остается спорным вопрос о том, является ли  снижение плотности  печени независимым  фактором  риска  тяжелого течения COVID-19.</p></sec><sec><title>Цель</title><p>Цель. Оценить   прогностическую  значимость сниженной   плотности печени  по  данным КТ  у пациентов с COVID-19.</p></sec><sec><title>Материалы и методы</title><p>Материалы и методы. Исследование  ретроспективное когортное. Проанализированы  данные  амбулаторных пациентов, обследованных  по  поводу COVID-19. Критерии включения: две КТ  органов грудной клетки (ОГК), показатели аланинаминотрансферазы (АЛТ), аспартатаминотрансферазы (АСТ) крови, теста методом полимеразной цепной реакции (ПЦР) мазка  из ротоглотки на SARS-CoV-2. Выделены 4 группы  сравнения согласно тяжести поражения легких (КТ1 – КТ3, КТ0 – группа контроля). Анализ плотности печени   проводился с помощью автоматической сегментации, сниженными считались показатели  менее 40 HU.</p></sec><sec><title>Результаты</title><p>Результаты. Отобраны данные 499 пациентов. Группы отличались по  возрасту и  плотности  печени   на  обеих   КТ. Корреляции между АЛТ  и АСТ и изменением плотности печени  не  выявлено. На КТ  в динамике низкая  плотность печени была характерна для мужского пола  (отношение   шансов  (ОШ) 2,79 (95% ДИ 1,42–5,47), p-value = 0,003) и  исходно сниженной  плотности печени  (ОШ 60,59 (95% ДИ 30,51–120,33), p-value &lt; 0,001). Возраст старше  60 лет взаимосвязан   с развитием   поражения легких (ОШ 1,04 (95% ДИ 1,02–1,06) для КТ1, ОШ 1,08 (95% ДИ 1,05–1,11) для КТ2, ОШ 1,1 (95% 1,06–1,15) для КТ3, p-value &lt; 0,001). Низкая плотность печени на первичной    КТ повышала шансы  тяжелого поражения легких (ОШ 6,9 (95% ДИ 2,06–23,07), p-value = 0,002).</p></sec><sec><title>Выводы</title><p>Выводы. При COVID-19 у пациентов с изначально низкой плотностью печени чаще   развивается тяжелое поражение легких.</p></sec></abstract><trans-abstract xml:lang="en"><sec><title>Introduction</title><p>Introduction. A high prevalence of decreased liver density has been shown among patients with COVID-19, but there are no convincing data on the cause of this phenomenon. It is still debatable whether decreased liver attenuation is an independent risk factor for the severe course of COVID-19.</p></sec><sec><title>Aim</title><p>Aim. Assessment the prognostic value of liver attenuation on CT scan in patients with COVID-19.</p></sec><sec><title>Materials and methods</title><p>Materials and methods. Retrospective cohort study. Data of COVID-19 outpatients were analyzed. Inclusion criteria: two chest CT scans, alanine aminotransferase (ALT), aspartate aminotransferase (AST) blood values, polymerase chain reaction to verify SARS-CoV-2. Four comparison groups were assigned according to the severity of lung lesions. Liver attenuation was analyzed by automatic segmentation, with values less than 40 HU being considered pathologic.</p></sec><sec><title>Results</title><p>Results. Data from 499 patients was included. No correlation between ALT and AST and changes in liver attenuation was found. Groups differed in age and liver attenuation on both CT scans. On follow-up  CT, low liver density was seen in males (odds ratio (OR) 2.79 (95%  CI 1.42–5.47), p-value = 0.003) and in patients with a baseline reduced liver density (OR 60.59 (95%  CI 30.51–120.33), p-value &lt; 0.001). Age over 60 years was associated with the development  of lung lesions (OR 1.04 (95%  CI 1.02–1.06)  for extent of lung injury &lt; 25%, OR 1.08 (95%  CI 1.05–1.11)  for 25–50%, OR 1.1 (95%  CI 1.06–1.15)  for 25–50%, p-value &lt; 0.001). Low liver attenuation  on the primary CT scan increased the odds of severe lung  injury (OR 6.9 (95%  CI 2.06–23.07), p-value = 0.002).</p></sec><sec><title>Conclusion</title><p>Conclusion. In COVID-19, patients with low liver attenuation are more likely to develop severe lung damage.</p></sec></trans-abstract><kwd-group xml:lang="ru"><kwd>SARS-CoV-2</kwd><kwd>коронавирусная инфекция</kwd><kwd>поражение легких</kwd><kwd>компьютерная томография</kwd><kwd>автоматическая сегментация</kwd></kwd-group><kwd-group xml:lang="en"><kwd>SARS-CoV-2</kwd><kwd>coronavirus disease</kwd><kwd>lung lesion</kwd><kwd>computed tomography</kwd><kwd>automatic segmentation</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">Grasselli G, Greco M, Zanella A, Albano G, Antonelli M, Bellani G et al. Risk factors associated with mortality among patients with COVID-19 in intensive care units in Lombardy, Italy. JAMA Intern Med. 2020;180(10):1345–1355. https://doi.org/10.1001/jamainternmed.2020.3539.</mixed-citation><mixed-citation xml:lang="en">Grasselli G, Greco M, Zanella A, Albano G, Antonelli M, Bellani G et al. Risk factors associated with mortality among patients with COVID-19 in intensive care units in Lombardy, Italy. JAMA Intern Med. 2020;180(10):1345–1355. https://doi.org/10.1001/jamainternmed.2020.3539.</mixed-citation></citation-alternatives></ref><ref id="cit2"><label>2</label><citation-alternatives><mixed-citation xml:lang="ru">Izcovich A, Ragusa MA, Tortosa F, Lavena Marzio MA, Agnoletti C, Bengolea A et al. Prognostic factors for severity and mortality in patients infected with COVID-19: A systematic review. PLoS ONE. 2020;15(11):e0241955. https://doi.org/10.1371/journal.pone.0241955.</mixed-citation><mixed-citation xml:lang="en">Izcovich A, Ragusa MA, Tortosa F, Lavena Marzio MA, Agnoletti C, Bengolea A et al. Prognostic factors for severity and mortality in patients infected with COVID-19: A systematic review. PLoS ONE. 2020;15(11):e0241955. https://doi.org/10.1371/journal.pone.0241955.</mixed-citation></citation-alternatives></ref><ref id="cit3"><label>3</label><citation-alternatives><mixed-citation xml:lang="ru">Leung JM, Niikura M, Yang CWT, Sin DD. COVID-19 and COPD. Eur Respir J. 2020;56(2):2002108. https://doi.org/10.1183/13993003.02108-2020.</mixed-citation><mixed-citation xml:lang="en">Leung JM, Niikura M, Yang CWT, Sin DD. COVID-19 and COPD. Eur Respir J. 2020;56(2):2002108. https://doi.org/10.1183/13993003.02108-2020.</mixed-citation></citation-alternatives></ref><ref id="cit4"><label>4</label><citation-alternatives><mixed-citation xml:lang="ru">Skevaki C, Karsonova A, Karaulov A, Xie M, Renz H. Asthma-associated risk for COVID-19 development. J Allergy Clin Immunol. 2020;146(6):1295–1301. https://doi.org/10.1016/j.jaci.2020.09.017.</mixed-citation><mixed-citation xml:lang="en">Skevaki C, Karsonova A, Karaulov A, Xie M, Renz H. Asthma-associated risk for COVID-19 development. J Allergy Clin Immunol. 2020;146(6):1295–1301. https://doi.org/10.1016/j.jaci.2020.09.017.</mixed-citation></citation-alternatives></ref><ref id="cit5"><label>5</label><citation-alternatives><mixed-citation xml:lang="ru">Henry BM, Lippi G. Chronic kidney disease is associated with severe coronavirus disease 2019 (COVID-19) infection. Int Urol Nephrol. 2020;52(6):1193–1194. https://doi.org/10.1007s11255-020-02451-9.</mixed-citation><mixed-citation xml:lang="en">Henry BM, Lippi G. Chronic kidney disease is associated with severe coronavirus disease 2019 (COVID-19) infection. Int Urol Nephrol. 2020;52(6):1193–1194. https://doi.org/10.1007s11255-020-02451-9.</mixed-citation></citation-alternatives></ref><ref id="cit6"><label>6</label><citation-alternatives><mixed-citation xml:lang="ru">Kim D, Adeniji N, Latt N, Kumar S, Bloom PP, Aby ES et al. Predictors of outcomes of COVID-19 in patients with chronic liver disease: US multi-center study. Clin Gastroenterol Hepatol. 2021;19(7):1469–1479.e19. https://doi.org/10.1016/j.cgh.2020.09.027.</mixed-citation><mixed-citation xml:lang="en">Kim D, Adeniji N, Latt N, Kumar S, Bloom PP, Aby ES et al. Predictors of outcomes of COVID-19 in patients with chronic liver disease: US multi-center study. Clin Gastroenterol Hepatol. 2021;19(7):1469–1479.e19. https://doi.org/10.1016/j.cgh.2020.09.027.</mixed-citation></citation-alternatives></ref><ref id="cit7"><label>7</label><citation-alternatives><mixed-citation xml:lang="ru">Madan K, Rastogi R, Bhargava R, Dagar V, Singla V, Sahu A et al. Is fatty liver associated with increased mortality and morbidity in coronavirus disease 2019 (COVID-19) pneumonia? J Clin Exp Hepatol. 2022;12(5):1320–1327. https://doi.org/10.1016/j.jceh.2022.04.013.</mixed-citation><mixed-citation xml:lang="en">Madan K, Rastogi R, Bhargava R, Dagar V, Singla V, Sahu A et al. Is fatty liver associated with increased mortality and morbidity in coronavirus disease 2019 (COVID-19) pneumonia? J Clin Exp Hepatol. 2022;12(5):1320–1327. https://doi.org/10.1016/j.jceh.2022.04.013.</mixed-citation></citation-alternatives></ref><ref id="cit8"><label>8</label><citation-alternatives><mixed-citation xml:lang="ru">Parlak S, Çıvgın E, Beşler MS, Kayıpmaz AE. The effect of hepatic steatosis on COVID-19 severity: Chest computed tomography findings. Saudi J Gastroenterol. 2021;27(2):105–110. https://doi.org/10.4103/sjg.sjg_540_20.</mixed-citation><mixed-citation xml:lang="en">Parlak S, Çıvgın E, Beşler MS, Kayıpmaz AE. The effect of hepatic steatosis on COVID-19 severity: Chest computed tomography findings. Saudi J Gastroenterol. 2021;27(2):105–110. https://doi.org/10.4103/sjg.sjg_540_20.</mixed-citation></citation-alternatives></ref><ref id="cit9"><label>9</label><citation-alternatives><mixed-citation xml:lang="ru">Шумская ЮФ, Ахмедзянова ДА, Мнацаканян МГ. Снижение рентгеновской плотности печени как потенциальный предиктор тяжелого течения COVID-19: ретроспективное когортное исследование. Consilium Medicum. 2023;25(5):351–356. https://doi.org/10.26442/20751753.2023.5.202251.</mixed-citation><mixed-citation xml:lang="en">Shumskaya YF, Akhmedzyanova DA, Mnatsakanyan MG. Decreased liver density as a potential predictor of severe COVID-19: a retrospective cohort study. Consilium Medicum. 2023;25(5):351–356. (In Russ.) https://doi.org/10.26442/20751753.2023.5.202251.</mixed-citation></citation-alternatives></ref><ref id="cit10"><label>10</label><citation-alternatives><mixed-citation xml:lang="ru">Гончар АП, Шумская ЮФ, Мнацаканян МГ, Блохин ИА, Захарова ДК, Решетников РВ и др. Влияние COVID-19 на плотность печени, по данным компьютерной томографии: ретроспективное когортное исследование. Сибирский журнал клинической и экспериментальной медицины. 2023;38(3):103–109. https://doi.org/10.29001/2073-8552-2023-39-3-103-109.</mixed-citation><mixed-citation xml:lang="en">Gonchar AP, Shumskaya YF, Mnatsakanyan MG, Blokhin IA, Zakharova DK, Reshetnikov RV et al. COVID-19 impact on liver attenuation by computed tomography: a retrospective cohort study. The Siberian Journal of Clinical and Experimental Medicine. 2023;38(3):103–109. (In Russ.) https://doi.org/10.29001/2073-8552-2023-38-3-103-109.</mixed-citation></citation-alternatives></ref><ref id="cit11"><label>11</label><citation-alternatives><mixed-citation xml:lang="ru">Vandenbroucke JP, von Elm E, Altman DG, Gotzsche PC, Mulrow CD, Pocock SJ et al. Strengthening the Reporting of Observational Studies in Epidemiology (STROBE): Explanation and Elaboration. Translation to Russian. Digital Diagnostics. 2021;2(2):119–169. https://doi.org/10.17816/DD70821.</mixed-citation><mixed-citation xml:lang="en">Vandenbroucke JP, von Elm E, Altman DG, Gotzsche PC, Mulrow CD, Pocock SJ et al. Strengthening the Reporting of Observational Studies in Epidemiology (STROBE): Explanation and Elaboration. Translation to Russian. Digital Diagnostics. 2021;2(2):119–169. https://doi.org/10.17816/DD70821.</mixed-citation></citation-alternatives></ref><ref id="cit12"><label>12</label><citation-alternatives><mixed-citation xml:lang="ru">Кульберг НС, Елизаров АБ, Новик ВП, Гомболевский ВА, Гончар АП, Босин ВЮ и др. Автоматическое пакетное определение рентгеновской плотности печени для выявления субклинических заболеваний печени. Радиология – практика. 2020;(3):50–61. Режим доступа: https://www.radp.ru/jour/article/view/101.</mixed-citation><mixed-citation xml:lang="en">Kulberg NS, Elizarov AB, Novic VP, Gombolevskiy VA, Gonchar AP, Bosin VYu et al. Automatic Batch Determining Radioattenuation of the Liver to Detect Subclinical Liver Cases. Radiology – Practice. 2020;(3):50–61. (In Russ.) Available at: https://www.radp.ru/jour/article/view/101.</mixed-citation></citation-alternatives></ref><ref id="cit13"><label>13</label><citation-alternatives><mixed-citation xml:lang="ru">R Core Team. R: A language and environment for statistical computing. R Foundation for Statistical Computing, Vienna, Austria. 2021.</mixed-citation><mixed-citation xml:lang="en">R Core Team. R: A language and environment for statistical computing. R Foundation for Statistical Computing, Vienna, Austria. 2021.</mixed-citation></citation-alternatives></ref><ref id="cit14"><label>14</label><citation-alternatives><mixed-citation xml:lang="ru">Yang RX, Zheng RD, Fan JG. Etiology and management of liver injury in patients with COVID-19. World J Gastroenterol. 2020;26(32):4753–4762. https://doi.org/10.3748/wjg.v26.i32.4753.</mixed-citation><mixed-citation xml:lang="en">Yang RX, Zheng RD, Fan JG. Etiology and management of liver injury in patients with COVID-19. World J Gastroenterol. 2020;26(32):4753–4762. https://doi.org/10.3748/wjg.v26.i32.4753.</mixed-citation></citation-alternatives></ref><ref id="cit15"><label>15</label><citation-alternatives><mixed-citation xml:lang="ru">Мнацаканян МГ, Погромов АП, Лишута АС, Фомин ВВ, Волкова ОС, Тащян ОВ и др. Механизмы повреждения печени при COVID-19. Терапевтический архив. 2021;93(4):427–430. https://doi.org/10.26442/00403660.2021.04.200733.</mixed-citation><mixed-citation xml:lang="en">Mnatsakanyan MG, Pogromov AP, Lishuta AS, Fomin VV, Volkova OS, Tashchyan OV et al. Liver and COVID-19: possible mechanisms of damage. Terapevticheskii Arkhiv. 2021;93(4):427–430. (In Russ.) https://doi.org/10.26442/00403660.2021.04.200733.</mixed-citation></citation-alternatives></ref><ref id="cit16"><label>16</label><citation-alternatives><mixed-citation xml:lang="ru">Morozov SP, Chernina VYu, Blokhin AI, Gombolevskiy VA. Chest computed tomography for outcome prediction in laboratory-confirmed COVID-19: A retrospective analysis of 38,051 cases. Digital Diagnostics. 2020;1(1):27–36. https://doi.org/10.17816/DD46791.</mixed-citation><mixed-citation xml:lang="en">Morozov SP, Chernina VYu, Blokhin AI, Gombolevskiy VA. Chest computed tomography for outcome prediction in laboratory-confirmed COVID-19: A retrospective analysis of 38,051 cases. Digital Diagnostics. 2020;1(1):27–36. https://doi.org/10.17816/DD46791.</mixed-citation></citation-alternatives></ref><ref id="cit17"><label>17</label><citation-alternatives><mixed-citation xml:lang="ru">Zhang C, Shi L, Wang FS. Liver injury in COVID-19: management and challenges. Lancet Gastroenterol Hepatol. 2020;5(5):428–430. https://doi.org/10.1016/S2468-1253(20)30057-1.</mixed-citation><mixed-citation xml:lang="en">Zhang C, Shi L, Wang FS. Liver injury in COVID-19: management and challenges. Lancet Gastroenterol Hepatol. 2020;5(5):428–430. https://doi.org/10.1016/S2468-1253(20)30057-1.</mixed-citation></citation-alternatives></ref><ref id="cit18"><label>18</label><citation-alternatives><mixed-citation xml:lang="ru">Lei P, Zhang L, Han P, Zheng C, Tong Q, Shang H et al. Liver injury in patients with COVID-19: clinical profiles, CT findings, the correlation of the severity with liver injury. Hepatol Int. 2020;14(5):733–742. https://doi.org/10.1016/S2468-1253(20)30057-1.</mixed-citation><mixed-citation xml:lang="en">Lei P, Zhang L, Han P, Zheng C, Tong Q, Shang H et al. Liver injury in patients with COVID-19: clinical profiles, CT findings, the correlation of the severity with liver injury. Hepatol Int. 2020;14(5):733–742. https://doi.org/10.1016/S2468-1253(20)30057-1.</mixed-citation></citation-alternatives></ref><ref id="cit19"><label>19</label><citation-alternatives><mixed-citation xml:lang="ru">Guler E, Unal NG, Cinkooglu A, Savas R, Kose T, Pullukcu H et al. Correlation of liver-to-spleen ratio, lung CT scores, clinical, and laboratory findings of COVID-19 patients with two consecutive CT scans. Abdom Radiol (NY). 2021;46(4):1543–1551. https://doi.org/10.1007/s00261-020-02805-y.</mixed-citation><mixed-citation xml:lang="en">Guler E, Unal NG, Cinkooglu A, Savas R, Kose T, Pullukcu H et al. Correlation of liver-to-spleen ratio, lung CT scores, clinical, and laboratory findings of COVID-19 patients with two consecutive CT scans. Abdom Radiol (NY). 2021;46(4):1543–1551. https://doi.org/10.1007/s00261-020-02805-y.</mixed-citation></citation-alternatives></ref><ref id="cit20"><label>20</label><citation-alternatives><mixed-citation xml:lang="ru">Ревишвили АШ, Кармазановский ГГ, Шантаревич МЮ, Замятина КA, Сташкив ВИ, Курочкина АИ и др. Характеристика паренхимы печени по данным нативной КТ на этапах лечения COVID-19. Анналы хирургической гепатологии. 2020;25(3):72–87. https://doi.org/10.16931/1995-5464.2020372-87.</mixed-citation><mixed-citation xml:lang="en">Revishvili AS, Karmazanovsky GG, Shantarevich MYu, Zamyatina KA, Stashkiv VI, Kurochkina AI et al. Characteristics of the liver parenchyma according to the native CT examinations data at the stages of COVID-19 treatment. Annals of HPB Surgery. 2020;25(3):72–87. (In Russ.) https://doi.org/10.16931/1995-5464.2020372-87.</mixed-citation></citation-alternatives></ref><ref id="cit21"><label>21</label><citation-alternatives><mixed-citation xml:lang="ru">Ali N, Hossain K. Liver injury in severe COVID-19 infection: current insights and challenges. Expert Rev Gastroenterol Hepatol. 2020;14(10):879–884. https://doi.org/10.1080/17474124.2020.1794812.</mixed-citation><mixed-citation xml:lang="en">Ali N, Hossain K. Liver injury in severe COVID-19 infection: current insights and challenges. Expert Rev Gastroenterol Hepatol. 2020;14(10):879–884. https://doi.org/10.1080/17474124.2020.1794812.</mixed-citation></citation-alternatives></ref><ref id="cit22"><label>22</label><citation-alternatives><mixed-citation xml:lang="ru">Zhang Y, Zheng L, Liu L, Zhao M, Xiao J, Zhao Q. Liver impairment in COVID-19 patients: A retrospective analysis of 115 cases from a single centre in Wuhan city, China. Liver Int. 2020;40(9):2095–2103. https://doi.org/10.1111/liv.14455.</mixed-citation><mixed-citation xml:lang="en">Zhang Y, Zheng L, Liu L, Zhao M, Xiao J, Zhao Q. Liver impairment in COVID-19 patients: A retrospective analysis of 115 cases from a single centre in Wuhan city, China. Liver Int. 2020;40(9):2095–2103. https://doi.org/10.1111/liv.14455.</mixed-citation></citation-alternatives></ref><ref id="cit23"><label>23</label><citation-alternatives><mixed-citation xml:lang="ru">Bangash MN, Patel J, Parekh D. COVID-19 and the liver: little cause for concern. Lancet Gastroenterol Hepatol. 2020;5(6):529–530. https://doi.org/10.1016/S2468-1253(20)30084-4.</mixed-citation><mixed-citation xml:lang="en">Bangash MN, Patel J, Parekh D. COVID-19 and the liver: little cause for concern. Lancet Gastroenterol Hepatol. 2020;5(6):529–530. https://doi.org/10.1016/S2468-1253(20)30084-4.</mixed-citation></citation-alternatives></ref><ref id="cit24"><label>24</label><citation-alternatives><mixed-citation xml:lang="ru">Ji D, Qin E, Xu J, Zhang D, Cheng G, Wang Y, Lau G. Non-alcoholic fatty liver diseases in patients with COVID-19: A retrospective study. J Hepatol. 2020;73(2):451–453. https://doi.org/10.1016/j.jhep.2020.03.044.</mixed-citation><mixed-citation xml:lang="en">Ji D, Qin E, Xu J, Zhang D, Cheng G, Wang Y, Lau G. Non-alcoholic fatty liver diseases in patients with COVID-19: A retrospective study. J Hepatol. 2020;73(2):451–453. https://doi.org/10.1016/j.jhep.2020.03.044.</mixed-citation></citation-alternatives></ref><ref id="cit25"><label>25</label><citation-alternatives><mixed-citation xml:lang="ru">Kwok S, Adam S, Ho JH, Iqbal Z, Turkington P, Razvi S et al. Obesity: A critical risk factor in the COVID‐19 pandemic. Clinical Obesity. 2020;10(6):e12403. https://doi.org/10.1111/cob.12403.</mixed-citation><mixed-citation xml:lang="en">Kwok S, Adam S, Ho JH, Iqbal Z, Turkington P, Razvi S et al. Obesity: A critical risk factor in the COVID‐19 pandemic. Clinical Obesity. 2020;10(6):e12403. https://doi.org/10.1111/cob.12403.</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>
