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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">Annals of the Russian academy of medical sciences</journal-id><journal-title-group><journal-title xml:lang="en">Annals of the Russian academy of medical sciences</journal-title><trans-title-group xml:lang="ru"><trans-title>Вестник Российской академии медицинских наук</trans-title></trans-title-group></journal-title-group><issn publication-format="print">0869-6047</issn><issn publication-format="electronic">2414-3545</issn><publisher><publisher-name xml:lang="en">"Paediatrician" Publishers LLC</publisher-name></publisher></journal-meta><article-meta><article-id pub-id-type="publisher-id">1478</article-id><article-id pub-id-type="doi">10.15690/vramn1478</article-id><article-categories><subj-group subj-group-type="toc-heading" xml:lang="en"><subject>CARDIOLOGY AND CARDIOVASCULAR SURGERY: CURRENT ISSUES</subject></subj-group><subj-group subj-group-type="toc-heading" xml:lang="ru"><subject>АКТУАЛЬНЫЕ ВОПРОСЫ КАРДИОЛОГИИ И СЕРДЕЧНО-СОСУДИСТОЙ ХИРУРГИИ</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">QRS-Fragmentation: Perspectives for Use in Clinical Practice</article-title><trans-title-group xml:lang="ru"><trans-title>Фрагментация QRS-комплексов — перспективы использования в клинической практике</trans-title></trans-title-group></title-group><contrib-group><contrib contrib-type="author"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0003-4040-2971</contrib-id><contrib-id contrib-id-type="spin">2764-7250</contrib-id><name-alternatives><name xml:lang="en"><surname>Fedulaev</surname><given-names>Yuri N.</given-names></name><name xml:lang="ru"><surname>Федулаев</surname><given-names>Юрий Николаевич</given-names></name></name-alternatives><address><country country="RU">Russian Federation</country></address><bio xml:lang="en"><p>MD, PhD, Professor, Head of the Department of Faculty Therapy</p></bio><bio xml:lang="ru"><p>доктор медицинских наук, профессор, заведующий кафедрой факультетской терапии педиатрического факультета</p></bio><email>kuwert@yandex.ru</email><xref ref-type="aff" rid="aff1"/></contrib><contrib contrib-type="author"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0001-5127-1300</contrib-id><contrib-id contrib-id-type="researcherid">ABE-1969-2020</contrib-id><contrib-id contrib-id-type="spin">3525-1775</contrib-id><name-alternatives><name xml:lang="en"><surname>Makarova</surname><given-names>Irina V.</given-names></name><name xml:lang="ru"><surname>Макарова</surname><given-names>Ирина Владимировна</given-names></name></name-alternatives><address><country country="RU">Russian Federation</country></address><bio xml:lang="en"><p>assistant, Department of Faculty Therapy</p></bio><bio xml:lang="ru"><p>ассистент кафедры факультетской терапии педиатрического факультета</p></bio><email>irina-makarova93@mail.ru</email><xref ref-type="aff" rid="aff1"/></contrib><contrib contrib-type="author"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0002-7877-4407</contrib-id><contrib-id contrib-id-type="spin">1940-2017</contrib-id><name-alternatives><name xml:lang="en"><surname>Pinchuk</surname><given-names>Tatiana V.</given-names></name><name xml:lang="ru"><surname>Пинчук</surname><given-names>Татьяна Витальевна</given-names></name></name-alternatives><address><country country="RU">Russian Federation</country></address><bio xml:lang="en"><p>MD, PhD, Department of Faculty Therapy</p></bio><bio xml:lang="ru"><p>кандидат медицинских наук, доцент кафедры факультетской терапии</p></bio><email>doktor2000@inbox.ru</email><xref ref-type="aff" rid="aff1"/></contrib><contrib contrib-type="author"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0002-4503-6280</contrib-id><contrib-id contrib-id-type="spin">1333-2511</contrib-id><name-alternatives><name xml:lang="en"><surname>Chuvarayan</surname><given-names>Grigoriy A.</given-names></name><name xml:lang="ru"><surname>Чувараян</surname><given-names>Григорий Асватурович</given-names></name></name-alternatives><address><country country="RU">Russian Federation</country></address><bio xml:lang="en"><p>MD, PhD; Head of Department of X-ray endovascular diagnosis and treatment</p></bio><bio xml:lang="ru"><p>кандидат медицинских наук, доцент кафедры факультетской терапии педиатрического факультета; заведующий отделением рентгенэндоваскулярных методов диагностики и лечения</p></bio><email>grigoriy.chuvarayan@gmail.com</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">Pirogov Russian National Research Medical University</institution></aff><aff><institution xml:lang="ru">Российский национальный исследовательский медицинский университет имени Н.И. Пирогова</institution></aff></aff-alternatives><aff-alternatives id="aff2"><aff><institution xml:lang="en">City Clinical Hospital №13</institution></aff><aff><institution xml:lang="ru">Городская клиническая больница № 13</institution></aff></aff-alternatives><pub-date date-type="pub" iso-8601-date="2021-09-03" publication-format="electronic"><day>03</day><month>09</month><year>2021</year></pub-date><volume>76</volume><issue>3</issue><issue-title xml:lang="en"/><issue-title xml:lang="ru"/><fpage>279</fpage><lpage>286</lpage><history><date date-type="received" iso-8601-date="2020-11-13"><day>13</day><month>11</month><year>2020</year></date><date date-type="accepted" iso-8601-date="2021-06-30"><day>30</day><month>06</month><year>2021</year></date></history><permissions><copyright-statement xml:lang="en">Copyright ©; 2021, "Paediatrician" Publishers LLC</copyright-statement><copyright-statement xml:lang="ru">Copyright ©; 2021, Издательство "Педиатръ"</copyright-statement><copyright-year>2021</copyright-year><copyright-holder xml:lang="en">"Paediatrician" Publishers LLC</copyright-holder><copyright-holder xml:lang="ru">Издательство "Педиатръ"</copyright-holder><ali:free_to_read xmlns:ali="http://www.niso.org/schemas/ali/1.0/" start_date="2022-09-03"/><license><ali:license_ref xmlns:ali="http://www.niso.org/schemas/ali/1.0/">https://vestnikramn.spr-journal.ru/jour/about/submissions</ali:license_ref></license></permissions><self-uri xlink:href="https://vestnikramn.spr-journal.ru/jour/article/view/1478">https://vestnikramn.spr-journal.ru/jour/article/view/1478</self-uri><abstract xml:lang="en"><p>The current article provides a detail review of foreign publications, discussing the opportunities and the benefits of evaluation of the QRS-fragmentation (fQRS) — a new electrocardiographic (ECG) parameter in patients with coronary artery disease (CAD). Diagnostic criteria for narrow and wide QRS-complexes are defined. Main results of the comparative and correlation analysis, evaluating fQRS and electrocardiographic (pathologic Q-waves), echocardiographic (left ventricular ejection fraction), angiographic settings are described. There is a discussion of the prognostic role of fQRS in stable CAD as well as in patients presented with acute myocardial infarction. fQRS is an available ECG-marker of local myocardial fibrosis. It seems to be a useful negative predictor in individuals with CAD, indicating an increased risk of life-threatening ventricular arrhythmias and recurrent cardiac events. The presence of fragmented QRS-complexes is associated with an increased in-hospital and long term (overall as well as cardiovascular) mortality. Routine evaluation of fQRS in standard ECG leads does not require additional resources, and will contribute to an improvement in diagnostics and risk stratification of stable CAD as well as myocardial infarction. Assessment of fQRS can be included in noninvasive diagnostic algorithm concerning CAD.</p></abstract><trans-abstract xml:lang="ru"><p>Представлен первый русскоязычный обзор основных публикаций, посвященных возможностям и перспективам оценки нового ЭКГ-параметра — фрагментации QRS-комплексов (fQRS) — у пациентов с различными формами ишемической болезни сердца. Приводятся диагностические критерии fQRS, освещаются результаты сравнительного и корреляционного анализа fQRS с ключевыми электрокардиографическими (патологические зубцы Q), эхокардиографическими и ангиографическими параметрами, подчеркивается негативное прогностическое значение показателя при стабильной ишемической болезни сердца и в случае развития острого инфаркта миокарда. Наличие fQRS в целом ассоциируется с осложненным течением ИБС, высоким риском развития жизнеугрожающих аритмий, повторных сердечно-сосудистых катастроф, ростом общей и сердечно-сосудистой смертности как в краткосрочной перспективе, так и в отдаленном периоде. Авторы считают необходимым обратить внимание на перспективность внедрения метода оценки fQRS в реальную клиническую практику. Определение показателя проводится на основании стандартной ЭКГ, что не требует дополнительных материальных ресурсов и оборудования и в то же время позволяет улучшить неинвазивную диагностику и стратификацию риска у пациентов с атеросклеротическим поражением коронарных артерий на амбулаторном и стационарном этапах.</p></trans-abstract><kwd-group xml:lang="en"><kwd>electrocardiography</kwd><kwd>coronary disease</kwd><kwd>myocardial infarction</kwd><kwd>prognosis</kwd></kwd-group><kwd-group xml:lang="ru"><kwd>электрокардиография</kwd><kwd>ишемическая болезнь сердца</kwd><kwd>инфаркт миокарда</kwd><kwd>прогноз</kwd></kwd-group><funding-group/></article-meta></front><body></body><back><ref-list><ref id="B1"><label>1.</label><mixed-citation>Baldassarre A, Mucci N, Padovan M, et al. The Role of Electrocardiography in Occupational Medicine, from Einthoven’s Invention to the Digital Era of Wearable Devices. 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