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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">10.29001/2073-8552-2026-41-2-193-201</article-id><article-id custom-type="elpub" pub-id-type="custom">cardiotomsk-3172</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>Миокардиальные мостики как причина стойких нарушений реполяризации у детей с синдромом / феноменом Вольфа – Паркинсона – Уайта после радиочастотной аблации: серия случаев и диагностический алгоритм</article-title><trans-title-group xml:lang="en"><trans-title>Myocardial bridges as a cause of persistent repolarization disturbances in children after radiofrequency ablation of Wolff – Parkinson – White syndrome / phenomenon: a case series and diagnostic algorithm</trans-title></trans-title-group></title-group><contrib-group><contrib contrib-type="author" corresp="yes"><contrib-id contrib-id-type="orcid">https://orcid.org/0009-0004-7604-6846</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Созинова</surname><given-names>Т. А.</given-names></name><name name-style="western" xml:lang="en"><surname>Sozinova</surname><given-names>T. A.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Созинова Татьяна Алексеевна - младший научный сотрудник, отделение детской кардиологии, НИИ кардиологии Томского НИМЦ.</p><p>634012, Томск, ул. Киевская, 111а</p></bio><bio xml:lang="en"><p>Tatyana A. Sozinova - Junior Research Scientist, Department of Pediatric Cardiology, Cardiology Research Institute, Tomsk NRMC.</p><p>111a, Kievskaya str., Tomsk, 634012</p></bio><email xlink:type="simple">stm@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/0000-0002-3947-4903</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Джаффарова</surname><given-names>О. Ю.</given-names></name><name name-style="western" xml:lang="en"><surname>Dzhaffarova</surname><given-names>O. Yu.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Джаффарова Ольга Юрьевна - канд. мед. наук, старший научный сотрудник, отделение детской кардиологии, НИИ кардиологии Томского НИМЦ.</p><p>634012, Томск, ул. Киевская, 111а</p></bio><bio xml:lang="en"><p>Olga Yu. Dzhaffarova - Cand. Sci. (Med.), Senior Research Scientist, Department of Pediatric Cardiology, Cardiology Research Institute, Tomsk NRMC.</p><p>111a, Kievskaya str., Tomsk, 634012</p></bio><email xlink:type="simple">oyd@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/0000-0002-2056-4060</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Свинцова</surname><given-names>Л. И.</given-names></name><name name-style="western" xml:lang="en"><surname>Svintsova</surname><given-names>L. I.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Свинцова Лилия Ивановна - д-р мед. наук, заведующий отделением детской кардиологии, НИИ кардиологии Томского НИМЦ.</p><p>634012, Томск, ул. Киевская, 111а</p></bio><bio xml:lang="en"><p>Liliya I. Svintsova - Dr. Sci. (Med.), Head of the Department of Pediatric Cardiology, Cardiology Research Institute, Tomsk NRMC.</p><p>111a, Kievskaya str., Tomsk, 634012</p></bio><email xlink:type="simple">lis@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/0000-0001-8121-8287</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Картофелева</surname><given-names>Е. О.</given-names></name><name name-style="western" xml:lang="en"><surname>Kartofeleva</surname><given-names>E. O.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Картофелева Елена Олеговна - младший научный сотрудник, отделение детской кардиологии, НИИ кардиологии Томского НИМЦ.</p><p>634012, Томск, ул. Киевская, 111а</p></bio><bio xml:lang="en"><p>Elena O. Kartofеleva - Junior Research Scientist, Department of Pediatric Cardiology, Cardiology Research Institute, Tomsk NRMC.</p><p>111a, Kievskaya str., Tomsk, 634012</p></bio><email xlink:type="simple">keo@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/0009-0001-5928-949X</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Якимова</surname><given-names>Е. В.</given-names></name><name name-style="western" xml:lang="en"><surname>Yakimova</surname><given-names>E. V.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Якимова Евгения Валентиновна - младший научный сотрудник, отделение детской кардиологии, НИИ кардиологии Томского НИМЦ.</p><p>634012, Томск, ул. Киевская, 111а</p></bio><bio xml:lang="en"><p>Evgenia V. Yakimova - Junior Research Scientist, Department of Pediatric Cardiology, Cardiology Research Institute, Tomsk NRMC.</p><p>111a, Kievskaya str., Tomsk, 634012</p></bio><email xlink:type="simple">Evgenia@cardio-tomsk.ru</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>2026</year></pub-date><pub-date pub-type="epub"><day>09</day><month>07</month><year>2026</year></pub-date><volume>41</volume><issue>2</issue><fpage>193</fpage><lpage>201</lpage><permissions><copyright-statement>Copyright &amp;#x00A9; Созинова Т.А., Джаффарова О.Ю., Свинцова Л.И., Картофелева Е.О., Якимова Е.В., 2026</copyright-statement><copyright-year>2026</copyright-year><copyright-holder xml:lang="ru">Созинова Т.А., Джаффарова О.Ю., Свинцова Л.И., Картофелева Е.О., Якимова Е.В.</copyright-holder><copyright-holder xml:lang="en">Sozinova T.A., Dzhaffarova O.Y., Svintsova L.I., Kartofeleva E.O., Yakimova E.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/3172">https://www.sibjcem.ru/jour/article/view/3172</self-uri><abstract><sec><title>Введение</title><p>Введение. Радиочастотная катетерная аблация (РЧА) является методом выбора лечения пациентов с синдромом Вольфа – Паркинсона – Уайта (WPW). Исчезновение дельта-волны после РЧА обычно сопровождается нормализацией вторичных нарушений реполяризации (изменением сегмента ST-T). Стойкие нарушения реполяризации после успешной РЧА требуют исследования на предмет других причин, таких как ишемия миокарда.</p></sec><sec><title>Цель</title><p>Цель: на примере серии клинических случаев проанализировать потенциальную роль миокардиальных мостиков (ММ) в сохранении нарушений реполяризации после успешной РЧА дополнительных проводящих путей (ДПП) у детей с синдромом WPW и предложить диагностический алгоритм.</p></sec><sec><title>Материал и методы</title><p>Материал и методы. Мы ретроспективно проанализировали пять педиатрических пациентов в возрасте от 8 до 17 лет с синдромом WPW (n = 4) и нодовентрикулярным трактом (n = 1). У всех пациентов наблюдалась стойкая депрессия сегмента ST на электрокардиограмме после РЧА (и в исходном состоянии у пациента с нодовентрикулярным трактом, не подвергавшегося РЧА). Всем пациентам было проведено комплексное неинвазивное обследование для исключения иных причин изменений сегмента ST, включающее стресс-тестирование с физической нагрузкой, стресс-эхокардиографию (ЭхоКГ) или перфузионную сцинтиграфию миокарда (ПСМ) и в конечном итоге мультиспиральную компьютерную томографию (МСКТ)-коронароангиографию (КАГ).</p></sec><sec><title>Результаты</title><p>Результаты. Во всех пяти случаях с помощью МСКТ-КАГ зарегистрированы аномалии коронарных артерий: в одном случае установлено аномальное отхождение правой коронарной артерии (ПКА) от левого синуса Вальсальвы, в четырех случаях ММ (три случая с участием левой передней нисходящей артерии (ПНА)). Несмотря на значительные ишемические изменения на электрокардиограмме (депрессия сегмента ST до 3,5 мм, положительные результаты нагрузочных тестов у трех из четырех пациентов), при функциональной визуализации (ПСМ, стресс-ЭхоКГ) не выявлены дефекты перфузии или нарушений подвижности стенок. Симптомные пациенты (n = 3) получали лечение β–блокатором (бисопрололом). При этом у одного из них наблюдалось уменьшение симптомов; одной пациентке с аномальным отхождением ПКА от левого синуса Вальсальвы была проведена хирургическая коррекция.</p></sec><sec><title>Заключение</title><p>Заключение. ММ является недостаточно изученной причиной стойких нарушений реполяризации у детей с синдромом WPW после успешной РЧА. Диагностическое несоответствие (положительные результаты электрокардиографии (ЭКГ) и велоэргометрии (ВЭМ), но отрицательные результаты функциональной визуализации (ПСМ и стресс-ЭхоКГ) должны вызывать подозрение на динамическую ишемию, индуцированную ММ. Включение МСКТ-КАГ в диагностический алгоритм для таких пациентов позволяет поставить точный диагноз и выбрать соответствующую терапию.</p></sec></abstract><trans-abstract xml:lang="en"><sec><title>Background</title><p>Background. Radiofrequency catheter ablation (RFCA) is the method of choice for treating patients with Wolff – Parkinson – White (WPW) syndrome. The disappearance of the delta wave is usually accompanied by the normalization of secondary repolarization abnormalities (ST-T segment changes). Persistent repolarization abnormalities after successful RFCA require investigation for other causes, such as myocardial ischemia.</p></sec><sec><title>Aim</title><p>Aim: To assess the potential role of myocardial bridges in the persistent repolarization abnormalities after successful radiofrequency ablation of accessory atrioventricular pathways (AAVPs) in children with WPW syndrome, using a case series, and to propose a diagnostic algorithm.</p></sec><sec><title>Material and Methods</title><p>Material and Methods. We retrospectively analyzed five pediatric patients aged 8 to 17 years with WPW syndrome (n = 4) and a nodal-ventricular tract (n = 1). All patients presented persistent ST-segment depression on ECG after ablation (and at baseline in the non-ablated patient with a nodal-ventricular tract). All patients underwent a comprehensive non-invasive workup to exclude other causes of ST-segment changes, including exercise stress testing, stress echocardiography or myocardial perfusion scintigraphy, and ultimately, multislice computed tomography (MSCT)-coronary angiography (CAG).</p></sec><sec><title>Results</title><p>Results. Coronary artery anomalies were identified in all five cases by MSCT-CAG: one case with anomalous origin of the right coronary artery from the left sinus of Valsalva, and four cases with myocardial bridges (MBs) (three cases involving the left anterior descending artery). Despite significant ischemic ECG changes (ST-depression up to 3.5 mm, positive exercise tests in 3/4), functional imaging (scintigraphy, stress Echo) showed no perfusion defects or wall motion abnormalities. Symptomatic patients (n = 3) were treated with a beta-blocker (bisoprolol) with symptomatic improvement in one; one patient with an anomalous coronary origin underwent surgical correction.</p></sec><sec><title>Conclusion</title><p>Conclusion. Myocardial bridges are an under-recognized cause of persistent repolarization abnormalities in children with WPW after successful RFCA. A diagnostic mismatch (positive ECG and exercise stress test findings, but negative functional imaging with MPS and stress Echo) should raise suspicion for dynamic ischemia induced by MBs. Including MSCT-CAG in the diagnostic algorithm for such patients enables accurate diagnosis and guides appropriate therapy.</p></sec></trans-abstract><kwd-group xml:lang="ru"><kwd>дети</kwd><kwd>синдром Вольфа – Паркинсона – Уайта</kwd><kwd>радиочастотная аблация</kwd><kwd>миокардиальный мостик</kwd><kwd>нарушения реполяризации</kwd><kwd>сегмент ST</kwd><kwd>ишемия миокарда</kwd><kwd>диагностический алгоритм</kwd><kwd>компьютерная томография коронарных артерий</kwd><kwd>клинический случай</kwd></kwd-group><kwd-group xml:lang="en"><kwd>children</kwd><kwd>Wolff – Parkinson – White syndrome</kwd><kwd>radiofrequency ablation</kwd><kwd>myocardial bridge</kwd><kwd>repolarization abnormalities</kwd><kwd>ST segment</kwd><kwd>myocardial ischemia</kwd><kwd>diagnostic algorithm</kwd><kwd>coronary artery computed tomography</kwd><kwd>clinical case</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">Obeyesekere M.N., Leong-Sit P., Massel D. et al. 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