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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">cardiotomsk</journal-id><journal-title-group><journal-title xml:lang="ru">Сибирский журнал клинической и экспериментальной медицины</journal-title><trans-title-group xml:lang="en"><trans-title>Siberian Journal of Clinical and Experimental Medicine</trans-title></trans-title-group></journal-title-group><issn pub-type="ppub">2713-2927</issn><issn pub-type="epub">2713-265X</issn><publisher><publisher-name>TSU publishing</publisher-name></publisher></journal-meta><article-meta><article-id pub-id-type="doi">10.29001/2073-8552-2026-41-1-161-171</article-id><article-id custom-type="elpub" pub-id-type="custom">cardiotomsk-3022</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>КЛИНИЧЕСКИЕ ИССЛЕДОВАНИЯ</subject></subj-group><subj-group subj-group-type="section-heading" xml:lang="en"><subject>CLINICAL STUDIES</subject></subj-group></article-categories><title-group><article-title>Особенности миокардиального кровотока у пациентов после чрескожных коронарных вмешательств перед операцией коронарного шунтирования в сравнении с пациентами без эндоваскулярных вмешательств</article-title><trans-title-group xml:lang="en"><trans-title>Myocardial blood flow in patients after percutaneous coronary interventions before coronary artery bypass grafting compared to patients without endovascular interventions</trans-title></trans-title-group></title-group><contrib-group><contrib contrib-type="author" corresp="yes"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0003-3952-9983</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Затолокин</surname><given-names>В. В.</given-names></name><name name-style="western" xml:lang="en"><surname>Zatolokin</surname><given-names>V. V.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Затолокин Василий Викторович - канд. мед. наук, старший научный сотрудник, врач-сердечно-сосудистый хирург, отделение сердечно-сосудистой хирургии, НИИ кардиологии Томского НИМЦ.</p><p>634012, Томск, ул. Киевская, 111а</p></bio><bio xml:lang="en"><p>Vasily V. Zatolokin - Cand. Sci. (Med.), Senior Research Scientist, Cardiovascular Surgeon, Department of Cardiovascular Surgery, Cardiology Research Institute, Tomsk NRMC.</p><p>111a, Kievskaya str., Tomsk, 634012</p></bio><email xlink:type="simple">zatolokin@cardio-tomsk.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/0000-0002-7540-7855</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Алишеров</surname><given-names>Ю. У.</given-names></name><name name-style="western" xml:lang="en"><surname>Alisherov</surname><given-names>Yu. U.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Алишеров Юсуфжон Улугбек угли - врач-сердечно-сосудистый</p><p>хирург, отделение сердечно-сосудистой хирургии, НИИ кардиологии Томского НИМЦ.</p><p>634012, Томск, ул. Киевская, 111а</p></bio><bio xml:lang="en"><p>Yusufjon Ulugbek ugli Alisherov - Cardiovascular Surgeon, Department of</p><p>Cardiovascular Surgery, Cardiology Research Institute, Tomsk NRMC.</p><p>111a, Kievskaya str., Tomsk, 634012</p></bio><email xlink:type="simple">lion19-93@inbox.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/0000-0003-2201-350X</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Панфилов</surname><given-names>Д. С.</given-names></name><name name-style="western" xml:lang="en"><surname>Panfilov</surname><given-names>D. S.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Панфилов Дмитрий Сергеевич - д-р мед. наук, старший научный сотрудник, отделение сердечно-сосудистой хирургии, НИИ кардиологии Томского НИМЦ.</p><p>634012, Томск, ул. Киевская, 111а</p></bio><bio xml:lang="en"><p>Dmitri S. Panfilov - Dr. Sci. (Med.), Senior Research Scientist, Department .of Cardiovascular Surgery, Cardiology Research Institute, Tomsk NR</p><p>111a, Kievskaya str., Tomsk, 634012</p></bio><email xlink:type="simple">pand2006@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/0000-0003-0883-466X</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Мочула</surname><given-names>А. В.</given-names></name><name name-style="western" xml:lang="en"><surname>Mochula</surname><given-names>A. V.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Мочула Андрей Викторович - канд. мед. наук, старший научный сотрудник, отделение рентгенохирургических методов диагностики и лечения, НИИ кардиологии Томского НИМЦ.</p><p>634012, Томск, ул. Киевская, 111а</p></bio><bio xml:lang="en"><p>Andrey V. Mochula - Cand. Sci. (Med.), Senior Research Scientist, Department of X-ray Surgical Methods of Diagnosis and Treatment, Cardiology Research Institute.</p><p>111a, Kievskaya str., Tomsk, 634012</p></bio><email xlink:type="simple">andrew@gmail.com</email><xref ref-type="aff" rid="aff-1"/></contrib><contrib contrib-type="author" corresp="yes"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0002-1513-8614</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Завадовский</surname><given-names>К. В.</given-names></name><name name-style="western" xml:lang="en"><surname>Zavadovsky</surname><given-names>K. V.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Завадовский Константин Валерьевич - д-р мед. наук, заведующий отделом лучевой диагностики, НИИ кардиологии Томского НИМЦ.</p><p>634012, Томск, ул. Киевская, 111а</p></bio><bio xml:lang="en"><p>Konstantin V. Zavadovsky - Dr. Sci. (Med.), Head of the Department of Radiation Diagnostics, Cardiology Research Institute, Tomsk NRMC.</p><p>111a, Kievskaya str., Tomsk, 634012</p></bio><email xlink:type="simple">konstz@cardio-tomsk.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/0000-0002-0217-7737</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Козлов</surname><given-names>Б. Н.</given-names></name><name name-style="western" xml:lang="en"><surname>Kozlov</surname><given-names>B. N.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Козлов Борис Николаевич - д-р мед. наук, профессор, заведующий отделением сердечно-сосудистой хирургии, НИИ кардиологии Томского НИМЦ.</p><p>634012, Томск, ул. Киевская, 111а</p></bio><bio xml:lang="en"><p>Boris N. Kozlov - Dr. Sci. (Med.), Professor, Head of the Department of Cardiovascular Surgery, Cardiology Research Institute, Tomsk NRMC.</p><p>111a, Kievskaya str., Tomsk, 634012</p></bio><email xlink:type="simple">bnkozlov@yandex.ru</email><xref ref-type="aff" rid="aff-1"/></contrib></contrib-group><aff-alternatives id="aff-1"><aff xml:lang="ru">Научно-исследовательский институт кардиологии, Томский национальный исследовательский медицинский центр Российской академии наук (НИИ кардиологии Томского НИМЦ)<country>Россия</country></aff><aff xml:lang="en">Cardiology Research Institute, Tomsk National Research Medical Center, Russian Academy of Sciences (Cardiology Research Institute, Tomsk NRMC)<country>Russian Federation</country></aff></aff-alternatives><pub-date pub-type="collection"><year>2026</year></pub-date><pub-date pub-type="epub"><day>05</day><month>04</month><year>2026</year></pub-date><volume>41</volume><issue>1</issue><fpage>161</fpage><lpage>171</lpage><permissions><copyright-statement>Copyright &amp;#x00A9; Затолокин В.В., Алишеров Ю.У., Панфилов Д.С., Мочула А.В., Завадовский К.В., Козлов Б.Н., 2026</copyright-statement><copyright-year>2026</copyright-year><copyright-holder xml:lang="ru">Затолокин В.В., Алишеров Ю.У., Панфилов Д.С., Мочула А.В., Завадовский К.В., Козлов Б.Н.</copyright-holder><copyright-holder xml:lang="en">Zatolokin V.V., Alisherov Y.U., Panfilov D.S., Mochula A.V., Zavadovsky K.V., Kozlov B.N.</copyright-holder><license 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.sibjcem.ru/jour/article/view/3022">https://www.sibjcem.ru/jour/article/view/3022</self-uri><abstract><sec><title>Актуальность</title><p>Актуальность. Предшествующие эндоваскулярные вмешательства могут инициировать развитие микрососудистой дисфункции у пациентов с ишемической болезнью сердца (ИБС), которые способны негативно влиять на функцию коронарных шунтов после операции. Динамическая однофотонная эмиссионная компьютерная томография (ОФЭКТ) миокарда представляет собой перспективный метод для неинвазивной диагностики данных нарушений.</p></sec><sec><title>Цель</title><p>Цель: сравнительная оценка миокардиального кровотока (МК) по данным ОФЭКТ на предоперационном этапе коронарного шунтирования (КШ) у пациентов с многососудистым поражением в зависимости от наличия или отсутствия чрескожного коронарного вмешательства (ЧКВ) в анамнезе.</p></sec><sec><title>Материал и методы</title><p>Материал и методы. Проведено одноцентровое проспективное исследование, включившее 118 пациентов с ИБС, направленных на КШ. Пациенты были разделены на две группы: основная группа (n = 60) – пациенты с предшествующими ЧКВ в анамнезе (PCI-группа); группа контроля (n = 58) – пациенты без предшествующих эндоваскулярных вмешательств (No PCI-группа). Всем пациентам за 2 сут до операции проводилась динамическая ОФЭКТ миокарда с фармакологической нагрузкой для оценки абсолютных показателей МК и резерва миокардального кровотока (РМК).</p></sec><sec><title>Результаты</title><p>Результаты. Глобальный МК в покое не различался между группами. Однако в условиях стресс-нагрузки глобальный МК и РМК достоверно различались в группе PCI по сравнению с группой No PCI: 0,79 [0,38; 1,2] против 1,01 [0,55; 1,6] мл/мин/г (p = 0,001) и 1,4 [0,89; 1,8] против 1,73 [1,35; 2,4] мл/мин/г (p = 0,003) соответственно. По результатам селективного анализа установлено снижение РМК в бассейне передней нисходящей артерии (ПНА) (1,39 [0,81; 1,57] против 1,75 [1,38; 1,88], p = 0,001) и огибающей артерии (ОА) (1,29 [0,69; 1,47] против 1,71 [1,1; 1,91], p = 0,013) в группе PCI.</p></sec><sec><title>Заключение</title><p>Заключение. У пациентов с предшествующими ЧКВ отмечается снижение как МК, так и РМК, свидетельствующее о развитии коронарной микрососудистой дисфункции, которая наиболее выражена в бассейне левой коронарной артерии. Выявленные нарушения могут оказывать влияние на отдаленные результаты КШ.</p></sec></abstract><trans-abstract xml:lang="en"><sec><title>Background</title><p>Background. Prior endovascular interventions can trigger the development of microvascular dysfunction in patients with coronary artery disease (CAD), which can negatively impact the function of coronary artery bypass grafts after surgery. Dynamic myocardial single-photon emission computed tomography (SPECT) is a promising method for the noninvasive diagnosis of these disorders.</p></sec><sec><title>Aim</title><p>Aim: To evaluate myocardial blood flow using SPECT in patients with multivessel coronary artery disease and prior percutaneous coronary interventions (PCI) before coronary artery bypass grafting (CABG).</p></sec><sec><title>Material and Methods</title><p>Material and Methods. A single-center prospective study was conducted, including 118 patients with CAD referred for CABG. Patients were divided into two groups: the main group (n = 60) – patients with a history of prior PCI (PCI group); the control group (n = 58) – patients without previous endovascular interventions (No PCI group). All patients underwent dynamic myocardial SPECT with a pharmacological load 2 days before surgery to assess absolute parameters of myocardial blood flow (MBF) and coronary flow reserve (CFR).</p></sec><sec><title>Results</title><p>Results. Global myocardial blood flow at rest did not differ between the groups. However, under stress load conditions, global MBF and CFR were significantly lower in the PCI group compared to the No PCI group: 0.79 [0.38; 1.2] ml/min/g versus 1.01 [0.55; 1.6] ml/min/g (p = 0.001) and 1.4 [0.89; 1.8] versus 1.73 [1.35; 2.4] (p = 0.003), respectively. Selective analysis revealed a significant decrease in CFR in the anterior descending artery (1.39 [0.81; 1.57] vs. 1.75 [1.38; 1.88], p = 0.001) and circumflex artery (1.29 [0.69; 1.47] vs. 1.71 [1.1; 1.91], p = 0.013) in the PCI group.</p></sec><sec><title>Conclusion</title><p>Conclusion. Patients with previous PCI demonstrated a decrease in both MBF and CFR, indicating the development of coronary microvascular dysfunction, which is most pronounced in the left coronary artery territory. These abnormalities may impact the longterm outcomes of coronary artery bypass grafting.</p></sec></trans-abstract><kwd-group xml:lang="ru"><kwd>чрескожные коронарные вмешательства</kwd><kwd>резерв миокардиального кровотока</kwd><kwd>однофотонная эмиссионная компьютерная томография</kwd><kwd>микрососудистая дисфункция</kwd><kwd>коронарное шунтирование</kwd></kwd-group><kwd-group xml:lang="en"><kwd>percutaneous coronary interventions</kwd><kwd>coronary flow reserve</kwd><kwd>single-photon emission computed tomography</kwd><kwd>microvascular dysfunction</kwd><kwd>coronary artery bypass grafting</kwd></kwd-group><funding-group xml:lang="ru"><funding-statement>никто из авторов не имеет финансовой заинтересованности в представленных материалах и методах</funding-statement></funding-group><funding-group xml:lang="en"><funding-statement>none of the authors have a financial interest in the presented material and methods</funding-statement></funding-group></article-meta></front><back><ref-list><title>References</title><ref id="cit1"><label>1</label><citation-alternatives><mixed-citation xml:lang="ru">Fukui T., Tanaka S., Takanashi S. 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