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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">evrazkar</journal-id><journal-title-group><journal-title xml:lang="ru">Евразийский Кардиологический Журнал</journal-title><trans-title-group xml:lang="en"><trans-title>Eurasian heart journal</trans-title></trans-title-group></journal-title-group><issn pub-type="ppub">2225-1685</issn><issn pub-type="epub">2305-0748</issn><publisher><publisher-name>Евразийская ассоциация кардиологов</publisher-name></publisher></journal-meta><article-meta><article-id pub-id-type="doi">10.38109/2225-1685-2025-4-62-65</article-id><article-id custom-type="elpub" pub-id-type="custom">evrazkar-6558</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 СТАТЬИ</subject></subj-group><subj-group subj-group-type="section-heading" xml:lang="en"><subject>ORIGINAL PAPERS</subject></subj-group></article-categories><title-group><article-title>Некоторые особенности коронарного синдрома медленного потока у больных с длительно текущим воспалением</article-title><trans-title-group xml:lang="en"><trans-title>Some features of slow-flow coronary syndrome in patients with long-term inflammation</trans-title></trans-title-group></title-group><contrib-group><contrib contrib-type="author" corresp="yes"><contrib-id contrib-id-type="orcid">https://orcid.org/0009-0000-8002-2813</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Войнов</surname><given-names>А. В.</given-names></name><name name-style="western" xml:lang="en"><surname>Voynov</surname><given-names>A. V.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Войнов Алексей Валерьевич, ассистент кафедры хирургии госпитальной с клиникой; врач отделения рентгенохирургических методов диагностики и лечения</p><p>ул. Льва Толстого, д. 6-8, г. Санкт-Петербург 197022</p><p>Лиговский пр., д. 2-4, г. Санкт-Петербург 191036</p></bio><bio xml:lang="en"><p>Alexey V. Voynov, Assistant, Department of Hospital Surgery; doctor, Department of X-ray surgical methods of diagnosis and treatment</p><p>6-8 L’va Tolstogo str., Saint Petersburg 197022</p><p>2-4 Ligovsky pr., Saint Petersburg 191036</p></bio><email xlink:type="simple">voinovalex@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/0000-0003-0680-7051</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Зверев</surname><given-names>О. Г.</given-names></name><name name-style="western" xml:lang="en"><surname>Zverev</surname><given-names>O G.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Зверев Олег Георгиевич, д.м.н., профессор кафедры хирургии госпитальной с клиникой; заведующий отделением рентгенохирургических методов диагностики и лечения</p><p>ул. Льва Толстого, д. 6-8, г. Санкт-Петербург 197022</p><p>Лиговский пр., д. 2-4, г. Санкт-Петербург 191036</p></bio><bio xml:lang="en"><p>Oleg G. Zverev, Dr. of Sci. (Med.), Professor, Department of Hospital Surgery; Head of the Department of X-ray Surgical Methods of Diagnosis and Treatment</p><p>6-8 L’va Tolstogo str., Saint Petersburg 197022</p><p>2-4 Ligovsky pr., Saint Petersburg 191036</p></bio><email xlink:type="simple">93411@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/0000-0002-5269-5233</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Лазарев</surname><given-names>С. М.</given-names></name><name name-style="western" xml:lang="en"><surname>Lazarev</surname><given-names>S. M.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Лазарев Сергей Михайлович, д.м.н., профессор кафедры хирургии госпитальной с клиникой</p><p>ул. Льва Толстого, д. 6-8, г. Санкт-Петербург 197022</p></bio><bio xml:lang="en"><p>Sergey M. Lazarev, Dr. of Sci. (Med.), Professor, Department of Hospital Surgery</p><p> 6-8 L’va Tolstogo str., Saint Petersburg 197022</p></bio><xref ref-type="aff" rid="aff-2"/></contrib><contrib contrib-type="author" corresp="yes"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0002-7988-8510</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Арчакова</surname><given-names>Л. И.</given-names></name><name name-style="western" xml:lang="en"><surname>Archakova</surname><given-names>L. I.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Арчакова Людмила Ивановна, д.м.н., заместитель главного врача по медицинской части; доцент кафедры госпитальной терапии</p><p>Лиговский пр., д. 2-4, г. Санкт-Петербург 191036</p><p>Университетская набережная, д. 7/9, г. Санкт-Петербург 199034</p></bio><bio xml:lang="en"><p>Liudmila I. Archakova, Dr. of Sci. (Med.), Deputy Chief Medical Officer; Associate Professor, Department of Hospital Therapy</p><p>2-4 Ligovsky pr., Saint Petersburg 191036</p><p>7/9 Universitetskaya embankment, Saint Petersburg 199034</p></bio><email xlink:type="simple">spbniif_a@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/0009-0004-3150-3652</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Боков</surname><given-names>А. Ф.</given-names></name><name name-style="western" xml:lang="en"><surname>Bokov</surname><given-names>A. F.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Боков Алексей Фанильевич, стажер-исследователь, врач отделения рентгенохирургических методов диагностики и лечения</p><p>Лиговский пр., д. 2-4, г. Санкт-Петербург 191036</p></bio><bio xml:lang="en"><p>Aleksey F. Bokov, intern researcher, Department of X-ray surgical methods of diagnosis and treatment</p><p>2-4 Ligovsky pr., Saint Petersburg 191036</p></bio><xref ref-type="aff" rid="aff-4"/></contrib><contrib contrib-type="author" corresp="yes"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0003-0608-4826</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Соколова</surname><given-names>О. П.</given-names></name><name name-style="western" xml:lang="en"><surname>Sokolova</surname><given-names>O. P.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Соколова Ольга Павловна, к.м.н., врач анестезиолог-реаниматолог, главный врач</p><p>Лиговский пр., д. 2-4, г. Санкт-Петербург 191036</p></bio><bio xml:lang="en"><p>Olga P. Sokolova, Cand. of Sci. (Med.), Doctor of Anesthesiology and Resuscitation, Chief Doctor</p><p>2-4 Ligovsky pr., Saint Petersburg 191036</p></bio><email xlink:type="simple">op.sokolova@spbniif.ru</email><xref ref-type="aff" rid="aff-4"/></contrib><contrib contrib-type="author" corresp="yes"><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Рогачевская</surname><given-names>М. А.</given-names></name><name name-style="western" xml:lang="en"><surname>Rogachevskaya</surname><given-names>M. A.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Рогачевская Мария Александровна, студентка 6 курса медицинского факультета</p><p>Университетская набережная, д. 7/9, г. Санкт-Петербург 199034</p></bio><bio xml:lang="en"><p>Maria A. Rogachevskaya, student of the 6th year of medical faculty</p><p>7/9 Universitetskaya embankment, Saint Petersburg 199034</p></bio><xref ref-type="aff" rid="aff-5"/></contrib></contrib-group><aff-alternatives id="aff-1"><aff xml:lang="ru"><institution>ФГБОУ ВО «Первый Санкт-Петербургский государственный медицинский университет имени академика И.П. Павлова» Минздрава России; ФГБУ «Санкт-Петербургский научно-исследовательский институт фтизиопульмонологии» Минздрава России</institution><country>Россия</country></aff><aff xml:lang="en"><institution>Pavlov First Saint Petersburg State Medical University; Saint-Petersburg State Phthisiopulmonology Research Institute</institution><country>Russian Federation</country></aff></aff-alternatives><aff-alternatives id="aff-2"><aff xml:lang="ru"><institution>ФГБОУ ВО «Первый Санкт-Петербургский государственный медицинский университет имени академика И.П. Павлова» Минздрава России</institution><country>Россия</country></aff><aff xml:lang="en"><institution>Pavlov First Saint Petersburg State Medical University</institution><country>Russian Federation</country></aff></aff-alternatives><aff-alternatives id="aff-3"><aff xml:lang="ru"><institution>ФГБУ «Санкт-Петербургский научно-исследовательский институт фтизиопульмонологии» Минздрава России; ФГБОУ ВО «Санкт-Петербургский государственный университет»</institution><country>Россия</country></aff><aff xml:lang="en"><institution>Saint-Petersburg State Phthisiopulmonology Research Institute; Saint-Petersburg State University</institution><country>Russian Federation</country></aff></aff-alternatives><aff-alternatives id="aff-4"><aff xml:lang="ru"><institution>ФГБУ «Санкт-Петербургский научно-исследовательский институт фтизиопульмонологии» Минздрава России</institution><country>Россия</country></aff><aff xml:lang="en"><institution>Saint-Petersburg State Phthisiopulmonology Research Institute</institution><country>Russian Federation</country></aff></aff-alternatives><aff-alternatives id="aff-5"><aff xml:lang="ru"><institution>ФГБОУ ВО «Санкт-Петербургский государственный университет»</institution><country>Россия</country></aff><aff xml:lang="en"><institution>Saint-Petersburg State University</institution><country>Russian Federation</country></aff></aff-alternatives><pub-date pub-type="collection"><year>2025</year></pub-date><pub-date pub-type="epub"><day>26</day><month>11</month><year>2025</year></pub-date><volume>0</volume><issue>4</issue><fpage>62</fpage><lpage>65</lpage><permissions><copyright-statement>Copyright &amp;#x00A9; Войнов А.В., Зверев О.Г., Лазарев С.М., Арчакова Л.И., Боков А.Ф., Соколова О.П., Рогачевская М.А., 2025</copyright-statement><copyright-year>2025</copyright-year><copyright-holder xml:lang="ru">Войнов А.В., Зверев О.Г., Лазарев С.М., Арчакова Л.И., Боков А.Ф., Соколова О.П., Рогачевская М.А.</copyright-holder><copyright-holder xml:lang="en">Voynov A.V., Zverev O.G., Lazarev S.M., Archakova L.I., Bokov A.F., Sokolova O.P., Rogachevskaya M.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.heartj.asia/jour/article/view/6558">https://www.heartj.asia/jour/article/view/6558</self-uri><abstract><sec><title>Введение</title><p>Введение. Патогенез коронарного синдрома медленного потока и его обратимость до конца не изучены, что затрудняет лечение таких пациентов. В последнее время появляется все больше свидетельств того, что воспаление играет важную роль в возникновении этих синдромов. Цель: установление функционального или фиксированного характера замедления коронарного кровотока и возможной обратимости таких изменений на модели хронического воспаления.</p></sec><sec><title>Материал и методы</title><p>Материал и методы. В исследование было включено 19 больных легочным туберкулезом с признаками замедления коронарного кровотока по данным коронарной ангиографии. Для оценки скорости движения рентгеноконтрастного вещества использовалась модифицированная шкала TIMI. Для оценки обратимости и возможного функционального характера изменений все ангиографические исследования выполнялись до и после интракоронарного введения 100 мкг нитроглицерина. Оценивались влияние противотуберкулезной химиотерапии и хирургического лечения.</p></sec><sec><title>Выводы</title><p>Выводы. Синдром медленного коронарного потока у пациентов, выявляемый у пациентов с длительно текущим хроническим воспалением в большинстве случаев носит не функциональный, а фиксированный характер. Консервативное или хирургическое лечение, направленное на элиминацию источника воспалительного ответа, не сопровождается нормализацией коронарного потока.</p></sec></abstract><trans-abstract xml:lang="en"><sec><title>Introduction</title><p>Introduction. The pathogenesis of slow flow coronary syndrome and its reversibility are not fully understood, which makes it difficult to treat these patients. Recently, there has been increasing evidence that inflammation plays a significant role in the development of these syndromes. The aim of this study was to investigate the functional or fixed nature of slow coronary blood flow and the potential reversibility of these changes in a chronic inflammation model.</p></sec><sec><title>Material and methods</title><p>Material and methods. The study included 19 patients with pulmonary tuberculosis who had signs of slowdown in coronary blood flow according to coronary angiography. A modified TIMI scale was used to assess the rate of movement of the radiocontrast agent. To assess the reversibility and possible functional nature of the changes, all angiographic studies were performed before and after intracoronary administration of 100 μg of nitroglycerin. The effects of antituberculosis chemotherapy and surgical treatment were evaluated.</p></sec><sec><title>Conclusions</title><p>Conclusions. The syndrome of slow coronary flow in patients with long-term chronic inflammation is not functional in most cases, but rather fixed. Conservative or surgical treatment aimed at eliminating the source of the inflammatory response is not accompanied by normalization of coronary flow.</p></sec></trans-abstract><kwd-group xml:lang="ru"><kwd>синдром замедленного коронарного кровотока</kwd><kwd>синдром Х</kwd><kwd>синдром Y</kwd></kwd-group><kwd-group xml:lang="en"><kwd>delayed coronary blood flow syndrome</kwd><kwd>syndrome X</kwd><kwd>syndrome Y</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">Aparicio A., Cuevas J., Morís C., Martin V. Slow Coronary Blood Flow: Pathogenesis and Clinical Implications. Eur Cardiol. 2022 Mar 14;17:e08. https://doi.org/10.15420/ecr.2021.46</mixed-citation><mixed-citation xml:lang="en">Aparicio A., Cuevas J., Morís C., Martin V. Slow Coronary Blood Flow: Pathogenesis and Clinical Implications. Eur Cardiol. 2022 Mar 14;17:e08. https://doi.org/10.15420/ecr.2021.46</mixed-citation></citation-alternatives></ref><ref id="cit2"><label>2</label><citation-alternatives><mixed-citation xml:lang="ru">Li JJ, Wu YJ, Qin XW. Should slow coronary flow be considered as a coronary syndrome? Med Hypotheses. 2006;66(5):953-6. https://doi.org/10.1016/j.mehy.2005.11.025</mixed-citation><mixed-citation xml:lang="en">Li JJ, Wu YJ, Qin XW. Should slow coronary flow be considered as a coronary syndrome? Med Hypotheses. 2006;66(5):953-6. https://doi.org/10.1016/j.mehy.2005.11.025</mixed-citation></citation-alternatives></ref><ref id="cit3"><label>3</label><citation-alternatives><mixed-citation xml:lang="ru">Li JJ, Zhu CG, Nan JL. et. all. Elevated circulating inflammatory markers in female patients with cardiac syndrome X. Cytokine. 2007 Dec;40(3):172-6. https://doi.org/10.1016/j.cyto.2007.09.005</mixed-citation><mixed-citation xml:lang="en">Li JJ, Zhu CG, Nan JL. et. all. Elevated circulating inflammatory markers in female patients with cardiac syndrome X. Cytokine. 2007 Dec;40(3):172-6. https://doi.org/10.1016/j.cyto.2007.09.005</mixed-citation></citation-alternatives></ref><ref id="cit4"><label>4</label><citation-alternatives><mixed-citation xml:lang="ru">Kayapinar O, Ozde C, Kaya A. Relationship between the reciprocal SOmE FEATURES OF SLOW-FLOW CORONARy SyNDROmE IN PATIENTS WITH LONg-TERm INFLAmmATION change in inflammation-related biomarkers (Fibrinogen-toalbumin and hsCRP-to-albumin ratios) and the presence and severity of coronary slow flow. Clin Appl Thromb Hemost 2019;25: 1076029619835383. https://doi.org/10.1177/1076029619835383</mixed-citation><mixed-citation xml:lang="en">Kayapinar O, Ozde C, Kaya A. Relationship between the reciprocal SOmE FEATURES OF SLOW-FLOW CORONARy SyNDROmE  IN PATIENTS WITH LONg-TERm INFLAmmATION change in inflammation-related biomarkers (Fibrinogen-toalbumin and hsCRP-to-albumin ratios) and the presence and severity of coronary slow flow. Clin Appl Thromb Hemost 2019;25: 1076029619835383. https://doi.org/10.1177/1076029619835383</mixed-citation></citation-alternatives></ref><ref id="cit5"><label>5</label><citation-alternatives><mixed-citation xml:lang="ru">Боков А.Ф., Войнов А.В., Зверев О.Г., и соавт. Особенности коронарного кровотока у больных легочным туберкулезом Медицинский альянс. 2024;12(2):33-37. https://doi.org/10.36422/23076348-2024-12-2-33-37</mixed-citation><mixed-citation xml:lang="en">Bokov А., Voinov А., Zverev О., et. all. Coronary slow flow phenomenon (syndrome Y) in pulmonary tuberculosis. Medical Alliance. 2024;12(2):36-37. (In Russ.) https://doi.org/10.36422/23076348-2024-12-2-33-37]</mixed-citation></citation-alternatives></ref><ref id="cit6"><label>6</label><citation-alternatives><mixed-citation xml:lang="ru">Agrawal S, Mehta PK, Bairey Merz CN. Cardiac Syndrome X: update 2014. Cardiol Clin. 2014 Aug;32(3):463-78. https://doi.org/10.1016/j.ccl.2014.04.006</mixed-citation><mixed-citation xml:lang="en">Agrawal S, Mehta PK, Bairey Merz CN. Cardiac Syndrome X: update 2014. Cardiol Clin. 2014 Aug;32(3):463-78. https://doi.org/10.1016/j.ccl.2014.04.006</mixed-citation></citation-alternatives></ref><ref id="cit7"><label>7</label><citation-alternatives><mixed-citation xml:lang="ru">Gibson CM, Ryan KA, Kelley M. et. all. Methodologic drift in the assessment of TIMI grade 3 flow and its implications with respect to the reporting of angiographic trial results. The TIMI Study Group. Am Heart J. 1999 Jun;137(6):1179-84. https://doi.org/10.1016/s0002-8703(99)70380-7</mixed-citation><mixed-citation xml:lang="en">Gibson CM, Ryan KA, Kelley M. et. all. Methodologic drift in the assessment of TIMI grade 3 flow and its implications with respect to the reporting of angiographic trial results. The TIMI Study Group. Am Heart J. 1999 Jun;137(6):1179-84. https://doi.org/10.1016/s0002-8703(99)70380-7</mixed-citation></citation-alternatives></ref><ref id="cit8"><label>8</label><citation-alternatives><mixed-citation xml:lang="ru">Zhu Q, Wang S, Huang X. et. all. Understanding the pathogenesis of coronary slow flow: Recent advances. Trends Cardiovasc Med. 2024 Apr;34(3):137-144. https://doi.org/10.1016/j.tcm.2022.12.001</mixed-citation><mixed-citation xml:lang="en">Zhu Q, Wang S, Huang X. et. all. Understanding the pathogenesis of coronary slow flow: Recent advances. Trends Cardiovasc Med. 2024 Apr;34(3):137-144. https://doi.org/10.1016/j.tcm.2022.12.001</mixed-citation></citation-alternatives></ref><ref id="cit9"><label>9</label><citation-alternatives><mixed-citation xml:lang="ru">Leone MC, Gori T, Fineschi M. The coronary slow flow phenomenon: a new cardiac "Y" syndrome? Clin Hemorheol Microcirc. 2008;39(14):185-90. PMID: 18503124.</mixed-citation><mixed-citation xml:lang="en">Leone MC, Gori T, Fineschi M. The coronary slow flow phenomenon: a new cardiac "Y" syndrome? Clin Hemorheol Microcirc. 2008;39(14):185-90. PMID: 18503124.</mixed-citation></citation-alternatives></ref><ref id="cit10"><label>10</label><citation-alternatives><mixed-citation xml:lang="ru">Goel PK, Gupta SK, Agarwal A, Kapoor A. Slow coronary flow: a distinct angiographic subgroup in syndrome X. Angiology. 2001 Aug;52(8):507-14. https://doi.org/10.1177/000331970105200801</mixed-citation><mixed-citation xml:lang="en">Goel PK, Gupta SK, Agarwal A, Kapoor A. Slow coronary flow: a distinct angiographic subgroup in syndrome X. Angiology. 2001 Aug;52(8):507-14. https://doi.org/10.1177/000331970105200801</mixed-citation></citation-alternatives></ref><ref id="cit11"><label>11</label><citation-alternatives><mixed-citation xml:lang="ru">Chalikias G, Tziakas D. Slow Coronary Flow: Pathophysiology, Clinical Implications, and Therapeutic Management. Angiology. 2021 Oct;72(9):808-818. https://doi.org/10.1177/00033197211004390</mixed-citation><mixed-citation xml:lang="en">Chalikias G, Tziakas D. Slow Coronary Flow: Pathophysiology, Clinical Implications, and Therapeutic Management. Angiology. 2021 Oct;72(9):808-818. https://doi.org/10.1177/00033197211004390</mixed-citation></citation-alternatives></ref><ref id="cit12"><label>12</label><citation-alternatives><mixed-citation xml:lang="ru">Xing Y, Shi J, Yan Y. et. all. Subclinical myocardial dysfunction in coronary slow flow phenomenon: Identification by speckle tracking echocardiography. Microcirculation. 2019 Jan;26(1):e12509. https://doi.org/10.1111/micc.12509</mixed-citation><mixed-citation xml:lang="en">Xing Y, Shi J, Yan Y. et. all. Subclinical myocardial dysfunction in coronary slow flow phenomenon: Identification by speckle tracking echocardiography. Microcirculation. 2019 Jan;26(1):e12509. https://doi.org/10.1111/micc.12509</mixed-citation></citation-alternatives></ref><ref id="cit13"><label>13</label><citation-alternatives><mixed-citation xml:lang="ru">Alvarez C, Siu H. Coronary Slow-Flow Phenomenon as an Underrecognized and Treatable Source of Chest Pain: Case Series and Literature Review. J Investig Med High Impact Case Rep. 2018 Jul 17;6:2324709618789194. https://doi.org/10.1177/2324709618789194</mixed-citation><mixed-citation xml:lang="en">Alvarez C, Siu H. Coronary Slow-Flow Phenomenon as an Underrecognized and Treatable Source of Chest Pain: Case Series and Literature Review. J Investig Med High Impact Case Rep. 2018 Jul 17;6:2324709618789194. https://doi.org/10.1177/2324709618789194</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>
