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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">10.29001/2073-8552-2025-40-4-210-219</article-id><article-id custom-type="elpub" pub-id-type="custom">cardiotomsk-2926</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 СЛУЧАИ</subject></subj-group><subj-group subj-group-type="section-heading" xml:lang="en"><subject>CLINICAL CASES</subject></subj-group></article-categories><title-group><article-title>Использование дополнительных параметров перфузионной сцинтиграфии миокарда в выявлении многососудистого поражения коронарных артерий (клинический случай)</article-title><trans-title-group xml:lang="en"><trans-title>Additional parameters of myocardial perfusion imaging in the detection of multivessel coronary artery lesions (case report)</trans-title></trans-title-group></title-group><contrib-group><contrib contrib-type="author" corresp="yes"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0001-9887-8214</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Шипулин</surname><given-names>В. В.</given-names></name><name name-style="western" xml:lang="en"><surname>Shipulin</surname><given-names>V. V.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Шипулин Владимир Владимирович - канд. мед. наук, научный сотрудник, лаборатория радионуклидных методов исследования, НИИ кардиологии Томского НИМЦ.</p><p>634012, Томск, ул. Киевская, 111а</p></bio><bio xml:lang="en"><p>Vladimir V. Shipulin - Cand. Sci. (Med.), Research Scientist, Department of Nuclear Medicine, Cardiology Research Institute, Tomsk NRMC.</p><p>111a, Kievskaya str., Tomsk, 634012</p></bio><email xlink:type="simple">shipartphoto@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/0000-0003-0883-466X</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, лаборатория радионуклидных методов исследования, 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 Nuclear Medicine, Cardiology Research Institute, Tomsk NRMC.</p><p>111a, Kievskaya str., Tomsk, 634012</p></bio><email xlink:type="simple">mochula.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 Department of Radiation Diagnostics, Cardiology Research Institute, Tomsk NRMC.</p><p>111a, Kievskaya str., Tomsk, 634012</p></bio><email xlink:type="simple">konstzav@gmail.com</email><xref ref-type="aff" rid="aff-1"/></contrib></contrib-group><aff-alternatives id="aff-1"><aff xml:lang="ru"><institution>Научно-исследовательский институт кардиологии, Томский национальный исследовательский медицинский центр Российской академии наук (НИИ кардиологии Томского НИМЦ)</institution><country>Россия</country></aff><aff xml:lang="en"><institution>Cardiology Research Institute, Tomsk National Research Medical Center, Russian Academy of Sciences (Cardiology Research Institute, Tomsk NRMC)</institution><country>Russian Federation</country></aff></aff-alternatives><pub-date pub-type="collection"><year>2025</year></pub-date><pub-date pub-type="epub"><day>12</day><month>12</month><year>2025</year></pub-date><volume>40</volume><issue>4</issue><fpage>210</fpage><lpage>219</lpage><permissions><copyright-statement>Copyright &amp;#x00A9; Шипулин В.В., Мочула А.В., Завадовский К.В., 2025</copyright-statement><copyright-year>2025</copyright-year><copyright-holder xml:lang="ru">Шипулин В.В., Мочула А.В., Завадовский К.В.</copyright-holder><copyright-holder xml:lang="en">Shipulin V.V., Mochula A.V., Zavadovsky K.V.</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.sibjcem.ru/jour/article/view/2926">https://www.sibjcem.ru/jour/article/view/2926</self-uri><abstract><p>Перфузионная сцинтиграфия миокарда (ПСМ) входит в диагностический алгоритм у пациентов со стабильной ишемической болезнью сердца (ИБС). Однако у пациентов с многососудистым поражением коронарных артерий (КА) данный метод может продемонстрировать ложноотрицательный результат, что в случае низкой предтестовой вероятности ИБС и невыраженной симптоматики может привести к ошибкам в диагностической тактике. Представленный клинический случай демонстрирует важность анализа дополнительных параметров ПСМ на примере пациента с многососудистым поражением КА и феноменом сбалансированной ишемии, при котором перфузия левого желудочка (ЛЖ) имеет практически нормальный вид. У пациента 58 лет основные жалобы на одышку и подъемы артериального давления (АД) до 170/100 мм рт. ст. Расчетная предтестовая вероятность ИБС составила 20%. Электрокардиография (ЭКГ) в покое, эхокардиография (ЭхоКГ) не продемонстрировали значимых отклонений от нормы. Согласно рекомендациям по диагностике и лечению пациентов со стабильной ИБС, пациент был направлен на неинвазивное нагрузочное тестирование – ПСМ. По результатам исследования, размер преходящего дефекта перфузии равнялся 3% от площади ЛЖ, что определяется как умеренный риск развития неблагоприятных сердечно-сосудистых событий (НССС). Однако при расширенном анализе данных ПСМ, таких как индекс транзиторной ишемической дилатации, стресс-индуцированная динамика фракции выброса (ФВ) ЛЖ, подвижности стенки и механической диссинхронии ЛЖ, а также наличие коронарного кальция позволили заподозрить у пациента многососудистое поражение КА, что явилось поводом для проведения коронарографии и последующей реваскуляризации.</p></abstract><trans-abstract xml:lang="en"><p>Myocardial perfusion imaging is included in the diagnostic algorithm in management of chronic coronary syndromes. However, in patients with multivessel coronary artery disease (CAD) this method can demonstrate false-negative result, which, in case of low pretest probability of CAD and mild symptomatology, can lead to errors in diagnostic tactics. The presented clinical case demonstrates the significance of analysis of additional parameters of myocardial perfusion imaging on the example of a patient with multivessel coronary artery disease and the phenomenon of balanced ischemia, in which the left ventricular perfusion has an almost normal perfusion. A 58-year-old patient has main complaints of dyspnea and blood pressure elevations up to 170/100 mmHg. The calculated pre-test probability of coronary heart disease was 20%. Rest ECG, echocardiography showed no significant abnormalities. According to the guidelines for diagnostics and treatment of patients with stable ischemic heart disease, the patient was referred for noninvasive stress testing myocardial perfusion scintigraphy. According to the study results, the size of reversed perfusion defect was 3% of the left ventricle, which is defined as a moderate risk of adverse cardiovascular events. However, extended analysis of myocardial perfusion data, such as transient ischemic dilatation index, stress-induced dynamics of left ventricular ejection fraction, wall motion and mechanical dyssynchrony of the left ventricle, as well as the presence of coronary calcium allowed to suspect multivessel coronary artery disease in the patient, which was the reason for coronarography and subsequent revascularization.</p></trans-abstract><kwd-group xml:lang="ru"><kwd>перфузионная сцинтиграфия миокарда</kwd><kwd>многососудистое поражение коронарных артерий</kwd><kwd>сбалансированная ишемия</kwd></kwd-group><kwd-group xml:lang="en"><kwd>myocardial perfusion imaging</kwd><kwd>multivessel coronary artery disease</kwd><kwd>balanced ischemia</kwd></kwd-group><funding-group><funding-statement xml:lang="ru">исследование выполнено без финансовой поддержки грантов, общественных, некоммерческих, коммерческих организаций и структур</funding-statement><funding-statement xml:lang="en">the research was carried out without financial support from grants, public, non-profit, commercial organizations and structures</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">Bryer E., Stein E., Goldberg S. 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