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<article 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" xmlns:ali="http://www.niso.org/schemas/ali/1.0/" article-type="research-article" dtd-version="1.2" xml:lang="en"><front><journal-meta><journal-id journal-id-type="publisher-id">Kazan medical journal</journal-id><journal-title-group><journal-title xml:lang="en">Kazan medical journal</journal-title><trans-title-group xml:lang="ru"><trans-title>Казанский медицинский журнал</trans-title></trans-title-group></journal-title-group><issn publication-format="print">0368-4814</issn><issn publication-format="electronic">2587-9359</issn><publisher><publisher-name xml:lang="en">Eco-Vector</publisher-name></publisher></journal-meta><article-meta><article-id pub-id-type="publisher-id">21228</article-id><article-id pub-id-type="doi">10.17816/KMJ2020-284</article-id><article-categories><subj-group subj-group-type="toc-heading" xml:lang="en"><subject>Clinical experiences</subject></subj-group><subj-group subj-group-type="toc-heading" xml:lang="ru"><subject>Обмен клиническим опытом</subject></subj-group><subj-group subj-group-type="article-type"><subject>Research Article</subject></subj-group></article-categories><title-group><article-title xml:lang="en">The effect of predilation on the incidence of the no/slow-reflow phenomenon in patients with acute coronary syndrome with ST segment elevation</article-title><trans-title-group xml:lang="ru"><trans-title>Влияние предилатации на частоту возникновения феномена no/slow-reflow у пациентов с острым коронарным синдромом с подъёмом сегмента ST</trans-title></trans-title-group></title-group><contrib-group><contrib contrib-type="author"><name-alternatives><name xml:lang="en"><surname>Sazanov</surname><given-names>G V</given-names></name><name xml:lang="ru"><surname>Сазанов</surname><given-names>Григорий Вячеславович</given-names></name></name-alternatives><address><country country="RU">Russian Federation</country></address><email>mc_sagr@mail.ru</email><xref ref-type="aff" rid="aff1"/><xref ref-type="aff" rid="aff2"/></contrib><contrib contrib-type="author"><name-alternatives><name xml:lang="en"><surname>Belokon'</surname><given-names>O S</given-names></name><name xml:lang="ru"><surname>Белоконь</surname><given-names>Олег Сергеевич</given-names></name></name-alternatives><address><country country="RU">Russian Federation</country></address><email>mc_sagr@mail.ru</email><xref ref-type="aff" rid="aff1"/><xref ref-type="aff" rid="aff2"/></contrib></contrib-group><aff-alternatives id="aff1"><aff><institution xml:lang="en">Stavropol Regional Clinical Hospital</institution></aff><aff><institution xml:lang="ru">Ставропольская краевая клиническая больница</institution></aff></aff-alternatives><aff-alternatives id="aff2"><aff><institution xml:lang="en">Stavropol State Medical University</institution></aff><aff><institution xml:lang="ru">Ставропольский государственный медицинский университет</institution></aff></aff-alternatives><pub-date date-type="pub" iso-8601-date="2020-04-13" publication-format="electronic"><day>13</day><month>04</month><year>2020</year></pub-date><volume>101</volume><issue>2</issue><issue-title xml:lang="en"/><issue-title xml:lang="ru"/><fpage>284</fpage><lpage>288</lpage><history><date date-type="received" iso-8601-date="2020-02-25"><day>25</day><month>02</month><year>2020</year></date><date date-type="accepted" iso-8601-date="2020-03-19"><day>19</day><month>03</month><year>2020</year></date></history><permissions><copyright-statement xml:lang="en">Copyright ©; 2020, Sazanov G.V., Belokon' O.S.</copyright-statement><copyright-statement xml:lang="ru">Copyright ©; 2020, Сазанов Г.В., Белоконь О.С.</copyright-statement><copyright-year>2020</copyright-year><copyright-holder xml:lang="en">Sazanov G.V., Belokon' O.S.</copyright-holder><copyright-holder xml:lang="ru">Сазанов Г.В., Белоконь О.С.</copyright-holder><ali:free_to_read xmlns:ali="http://www.niso.org/schemas/ali/1.0/"/><license><ali:license_ref xmlns:ali="http://www.niso.org/schemas/ali/1.0/">http://creativecommons.org/licenses/by-nc-sa/4.0</ali:license_ref></license></permissions><self-uri xlink:href="https://kazanmedjournal.ru/kazanmedj/article/view/21228">https://kazanmedjournal.ru/kazanmedj/article/view/21228</self-uri><abstract xml:lang="en"><p><bold>Aim.</bold> To assess the effect of balloon predilation on the incidence of no/slow-reflow complication during percutaneous coronary intervention (PCI) in patients with ST-elevation myocardial infarction (STEMI).</p> <p><bold>Methods.</bold> We analyzed the experience of the department of endovascular diagnostic and treatment methods of the Stavropol Regional Clinical Hospital for endovascular surgical treatment of patients with STEMI, including after thrombolytic therapy (TLT). The study included 721 patients admitted to the hospital within the first 12 hours from the moment of the first contact with a medical staff. For the study, patients were divided into 2 comparable groups according to the gradation scale TIMI (Thrombolysis in myocardial infarction), comparable the patients' gender, age and other characteristics. Each of the groups also was divided into 2 subgroups according to performing predilation. The study also analyzed the correlation between patients' mortality and existence of the no/slow-reflow phenomenon.</p> <p><bold>Results.</bold> The lowest incidence of the no/slow-reflow phenomenon was in groups in which predilation before stent implantation was not performed. In the group where the blood flow was higher than TIMI 0, the occurrence rate of the no/slow-reflow phenomenon was 7.2 times higher in group with predilation. In the group where the artery was occluded, the risk of the phenomenon during predilation was 3.6 times higher than in group with the “tracking” method. The risk of mortality in patients with no/slow-reflow phenomenon was 3.9 times higher.</p> <p><bold>Conclusion.</bold> In carrying out the percutaneous coronary intervention, the most preferable is the refusal to perform predilation if there is an appropriate technical feasibility; it is recommended for patients with a blood flow level TIMI 0 to draw a balloon catheter for an occlusion site, which may allow antegrade blood flow to be achieved.</p></abstract><trans-abstract xml:lang="ru"><p><bold>Цель.</bold> Оценить влияние баллонной предилатации на частоту возникновения осложнения no/slow-reflow при выполнении чрескожного коронарного вмешательства у пациентов, поступивших с диагнозом «острый коронарный синдром с подъёмом сегмента ST».</p> <p><bold>Методы.</bold> Авторы проанализировали опыт работы отделения рентгенэндоваскулярных методов диагностики и лечения Ставропольской краевой клинической больницы по эндоваскулярному хирургическому лечению пациентов с острым коронарным синдромом с подъёмом сегмента ST, в том числе после проведения тромболитической терапии в 2019 г. В исследование был включён 721 пациент, поступивший в стационар в течение первых 12 ч от момента первого контакта с медицинским работником. Для проведения исследования пациенты были разделены на две группы согласно градации по шкале TIMI (от англ. Thrombolysis In Myocardial Infarction), сопоставимых по полу, возрасту пациентов и иным характеристикам. Каждая из групп в свою очередь была разделена на две подгруппы по принципу выполнения предилатации. В исследовании также была проанализирована зависимость между смертностью и наличием у пациента феномена no/slow-reflow.</p> <p><bold>Результаты.</bold> Наименьшая частота возникновения феномена no/slow-reflow была в тех группах, в которых предилатацию перед имплантацией стента не выполняли. В группе, где уровень кровотока был выше TIMI 0, частота возникновения феномена no/slow-reflow оказалась в 7,2 раза выше при выполнении предилатации, в группе, где артерия была окклюзирована, риск феномена при выполнении предилатации был в 3,6 раза выше в сравнении с методикой «трекинг». Риск смерти у пациентов с no/slow-reflow был выше в 3,9 раза.</p> <p><bold>Вывод.</bold> При выполнении чрескожного коронарного вмешательства наиболее предпочтителен отказ от выполнения предилатации при наличии соответствующей технической возможности; пациентам с уровнем кровотока TIMI 0 рекомендовано выполнять протяжку баллонным катетером за место окклюзии, которая может позволить добиться антеградного кровотока.</p></trans-abstract><kwd-group xml:lang="en"><kwd>angiography</kwd><kwd>coronary stenting</kwd><kwd>no/slow-reflow</kwd><kwd>predilation</kwd><kwd>tracking</kwd></kwd-group><kwd-group xml:lang="ru"><kwd>ангиография</kwd><kwd>коронарное стентирование</kwd><kwd>no/slow-reflow</kwd><kwd>предилатация</kwd></kwd-group><funding-group/></article-meta></front><body></body><back><ref-list><ref id="B1"><label>1.</label><citation-alternatives><mixed-citation xml:lang="en">Rentgenehndovaskulyarnaya khirurgiya. Natsionalʹnoe rukovodstvo. V 4 t. (X-ray endovascular surgery. 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