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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">Cardiac Arrhythmias</journal-id><journal-title-group><journal-title xml:lang="en">Cardiac Arrhythmias</journal-title><trans-title-group xml:lang="ru"><trans-title>Cardiac Arrhythmias</trans-title></trans-title-group><trans-title-group xml:lang="zh"><trans-title>Cardiac Arrhythmias</trans-title></trans-title-group></journal-title-group><issn publication-format="print">2782-4284</issn><issn publication-format="electronic">2782-4233</issn><publisher><publisher-name xml:lang="en">Eco-Vector</publisher-name></publisher></journal-meta><article-meta><article-id pub-id-type="publisher-id">108644</article-id><article-id pub-id-type="doi">10.17816/cardar108644</article-id><article-categories><subj-group subj-group-type="toc-heading" xml:lang="en"><subject>Case reports</subject></subj-group><subj-group subj-group-type="toc-heading" xml:lang="ru"><subject>Клинические случаи</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">Preoperative Prediction of Optimal Method and Site of Left Ventricular Electrode Implantation</article-title><trans-title-group xml:lang="ru"><trans-title>Предоперационное прогнозирование оптимального способа и места имплантации левожелудочкового электрода</trans-title></trans-title-group><trans-title-group xml:lang="zh"><trans-title/></trans-title-group></title-group><contrib-group><contrib contrib-type="author"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0003-2540-6544</contrib-id><contrib-id contrib-id-type="spin">9710-3406</contrib-id><name-alternatives><name xml:lang="en"><surname>Stepanova</surname><given-names>Vera V.</given-names></name><name xml:lang="ru"><surname>Степанова</surname><given-names>Вера Владимировна</given-names></name><name xml:lang="zh"><surname></surname><given-names></given-names></name></name-alternatives><address><country country="RU">Russian Federation</country></address><bio xml:lang="en"><p>Doctor</p></bio><bio xml:lang="ru"><p>врач</p></bio><email>veragrokhotova@mail.ru</email><xref ref-type="aff" rid="aff1"/></contrib><contrib contrib-type="author"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0002-8141-5149</contrib-id><contrib-id contrib-id-type="spin">3681-6714</contrib-id><name-alternatives><name xml:lang="en"><surname>Marinin</surname><given-names>Valery A.</given-names></name><name xml:lang="ru"><surname>Маринин</surname><given-names>Валерий Алексеевич</given-names></name><name xml:lang="zh"><surname></surname><given-names></given-names></name></name-alternatives><address><country country="RU">Russian Federation</country></address><bio xml:lang="en"><p>MD, PhD</p></bio><bio xml:lang="ru"><p>д-р мед. наук</p></bio><email>marininva@mail.ru</email><xref ref-type="aff" rid="aff1"/></contrib><contrib contrib-type="author"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0002-4670-5861</contrib-id><contrib-id contrib-id-type="spin">6074-9104</contrib-id><name-alternatives><name xml:lang="en"><surname>Zubarev</surname><given-names>Stepan V.</given-names></name><name xml:lang="ru"><surname>Зубарев</surname><given-names>Степан Владимирович</given-names></name><name xml:lang="zh"><surname></surname><given-names></given-names></name></name-alternatives><address><country country="RU">Russian Federation</country></address><bio xml:lang="en"><p>Cand. of Sci. (Med.)</p></bio><bio xml:lang="ru"><p>канд. мед. наук</p></bio><email>zubarevstepan@gmail.com</email><xref ref-type="aff" rid="aff2"/></contrib></contrib-group><aff-alternatives id="aff1"><aff><institution xml:lang="en">North-Western State Medical University named after I.I. Mechnikov</institution></aff><aff><institution xml:lang="ru">Северо-Западный государственный медицинский университет им. И.И. Мечникова Минздрава России</institution></aff><aff><institution xml:lang="zh"></institution></aff></aff-alternatives><aff-alternatives id="aff2"><aff><institution xml:lang="en">Almazov National Medical Research centre</institution></aff><aff><institution xml:lang="ru">Научный медицинский исследовательский центр им. В.А. Алмазова Минздрава России</institution></aff><aff><institution xml:lang="zh"></institution></aff></aff-alternatives><pub-date date-type="preprint" iso-8601-date="2022-09-08" publication-format="electronic"><day>08</day><month>09</month><year>2022</year></pub-date><pub-date date-type="pub" iso-8601-date="2022-09-25" publication-format="electronic"><day>25</day><month>09</month><year>2022</year></pub-date><volume>2</volume><issue>2</issue><issue-title xml:lang="en"/><issue-title xml:lang="ru"/><issue-title xml:lang="zh"/><fpage>51</fpage><lpage>56</lpage><history><date date-type="received" iso-8601-date="2022-06-09"><day>09</day><month>06</month><year>2022</year></date><date date-type="accepted" iso-8601-date="2022-08-18"><day>18</day><month>08</month><year>2022</year></date></history><permissions><copyright-statement xml:lang="en">Copyright ©; 2022, Stepanova V.V., Marinin V.A., Zubarev S.V.</copyright-statement><copyright-statement xml:lang="ru">Copyright ©; 2022, Степанова В.В., Маринин В.А., Зубарев С.В.</copyright-statement><copyright-statement xml:lang="zh">Copyright ©; 2022, Stepanova V., Marinin V., Zubarev S.</copyright-statement><copyright-year>2022</copyright-year><copyright-holder xml:lang="en">Stepanova V.V., Marinin V.A., Zubarev S.V.</copyright-holder><copyright-holder xml:lang="ru">Степанова В.В., Маринин В.А., Зубарев С.В.</copyright-holder><copyright-holder xml:lang="zh">Stepanova V., Marinin V., Zubarev S.</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/">https://creativecommons.org/licenses/by-nc-nd/4.0</ali:license_ref></license></permissions><self-uri xlink:href="https://journals.eco-vector.com/cardar/article/view/108644">https://journals.eco-vector.com/cardar/article/view/108644</self-uri><abstract xml:lang="en"><p>We present a clinical case of cardiac resynchronization device implantation in a patient with a zone of late left ventricular activation in the area of the anterior coronary sinus vein, which, however, was unsuitable for endovascular implantation and stable electrode placement in it. This anatomical feature was diagnosed at the outpatient stage using a noninvasive mapping technique. Using this approach, we were able to understand that an epicardial electrode implantation, instead of traditional endovascular implantation of the left ventricular electrode through the coronary sinus vein, is indicated for the patient. Targeted implantation of an epicardial electrode in the area of interest on the epicardial surface of the left ventricle in the basal part of the anterolateral wall allowed achieving a complete clinical response to resynchronization therapy.</p></abstract><trans-abstract xml:lang="ru"><p>Приведен клинический случай имплантации сердечного ресинхронизирующего устройства пациенту с зоной поздней активации левого желудочка в области передней вены коронарного синуса, которая при этом была непригодна для эндоваскулярной имплантации и устойчивого нахождения в ней электрода. Эта анатомическая особенность была диагностирована на догоспитальном этапе с помощью методики неинвазивного картирования. Данный подход позволил понять, что пациенту показана имплантация эпикардиального электрода вместо традиционной трансвенозной имплантации левожелудочкового электрода через вену коронарного синуса. Проведенная целевая имплантация эпикардиального электрода в зону интереса на эпикардиальной поверхности левого желудочка в базальном отделе передне-боковой стенки позволила добиться полного клинического ответа на ресинхронизирующую терапию.</p></trans-abstract><trans-abstract xml:lang="zh"><p/></trans-abstract><kwd-group xml:lang="en"><kwd>Left ventricular lead implantation</kwd><kwd>noninvasive mapping</kwd><kwd>cardiac resynchronization therapy</kwd><kwd>case report</kwd></kwd-group><kwd-group xml:lang="ru"><kwd>имплантация левожелудочкового электрода</kwd><kwd>неинвазивное картирование</kwd><kwd>сердечная ресинхронизирующая терапия</kwd><kwd>клинический случай</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">Glikson M, Nielsen JC, Kronborg MB, et al. 2021 ESC Guidelines on cardiac pacing and cardiac resynchronization therapy. Eur Heart J. 2021;42(35):3427–3520. 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