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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="en"><front><journal-meta><journal-id journal-id-type="publisher-id">rpcardio</journal-id><journal-title-group><journal-title xml:lang="en">Rational Pharmacotherapy in Cardiology</journal-title><trans-title-group xml:lang="ru"><trans-title>Рациональная Фармакотерапия в Кардиологии</trans-title></trans-title-group></journal-title-group><issn pub-type="ppub">1819-6446</issn><issn pub-type="epub">2225-3653</issn><publisher><publisher-name>«SILICEA-POLIGRAF» LLC</publisher-name></publisher></journal-meta><article-meta><article-id pub-id-type="doi">10.20996/1819-6446-2021-03-05</article-id><article-id custom-type="elpub" pub-id-type="custom">rpcardio-2427</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="en"><subject>ORIGINAL STUDIES</subject></subj-group><subj-group subj-group-type="section-heading" xml:lang="ru"><subject>ОРИГИНАЛЬНЫЕ ИССЛЕДОВАНИЯ</subject></subj-group></article-categories><title-group><article-title>Safety and Effectiveness of Pharmacologic Conversion of Atrial Fibrillation and Flutter: Results of Multicenter Trial. Part I: Study Rationale, Design and Assessment of Effectiveness</article-title><trans-title-group xml:lang="ru"><trans-title>Опыт клинического применения отечественного антиаритмического препарата III класса для медикаментозной кардиоверсии фибрилляции и трепетания предсердий: результаты многоцентрового исследования. Часть 1: методология исследования и оценка эффективности</trans-title></trans-title-group></title-group><contrib-group><contrib contrib-type="author" corresp="yes"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0002-6086-6784</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Миронов</surname><given-names>Н. Ю.</given-names></name><name name-style="western" xml:lang="en"><surname>Mironov</surname><given-names>N. Yu.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Миронов Николай Юрьевич – eLibrary SPIN 3542-5572</p><p>Москва</p></bio><bio xml:lang="en"><p>Nikolay Yu. Mironov - eLibrary SPIN 3542-5572</p><p>Moscow</p></bio><email xlink:type="simple">nikmir.7ko@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/0000-0002-5532-6345</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Юричева</surname><given-names>Ю. А.</given-names></name><name name-style="western" xml:lang="en"><surname>Yuricheva</surname><given-names>Yu. A.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Юричева Юлия Александровна - eLibrary SPIN 8329-3595</p><p>Москва</p></bio><bio xml:lang="en"><p>Yulia A. Yuriceva - eLibrary SPIN 8329-3595</p><p>Moscow</p></bio><xref ref-type="aff" rid="aff-1"/></contrib><contrib contrib-type="author" corresp="yes"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0002-8976-8539</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Влодзяновский</surname><given-names>В. В.</given-names></name><name name-style="western" xml:lang="en"><surname>Vlodzyanovskiy</surname><given-names>V. V.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Влодзяновский Владислав Владимирович</p><p>Москва</p></bio><bio xml:lang="en"><p>Vladislav V. Vlodzyanovskiy</p><p>Moscow</p></bio><xref ref-type="aff" rid="aff-1"/></contrib><contrib contrib-type="author" corresp="yes"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0001-5418-7796</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Соколов</surname><given-names>С. Ф.</given-names></name><name name-style="western" xml:lang="en"><surname>Sokolov</surname><given-names>S. F.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Соколов Сергей Федорович - eLibrary SPIN 5551-8391</p><p>Москва</p></bio><bio xml:lang="en"><p>Sergey F. Sokolov - eLibrary SPIN 5551-8391</p><p>Moscow</p></bio><xref ref-type="aff" rid="aff-1"/></contrib><contrib contrib-type="author" corresp="yes"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0003-4291-1040</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Дзаурова</surname><given-names>Х. М.</given-names></name><name name-style="western" xml:lang="en"><surname>Dzaurova</surname><given-names>Kh. M.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Дзаурова Хава Муссаевна</p><p>Москва</p></bio><bio xml:lang="en"><p>Khava M. Dzaurova</p><p>Moscow</p></bio><xref ref-type="aff" rid="aff-1"/></contrib><contrib contrib-type="author" corresp="yes"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0001-9913-9974</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Голицын</surname><given-names>С. П.</given-names></name><name name-style="western" xml:lang="en"><surname>Golitsyn</surname><given-names>S. P.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Голицын Сергей Павлович</p><p>Москва</p></bio><bio xml:lang="en"><p>Sergey P. Golitsyn</p><p>Moscow</p></bio><xref ref-type="aff" rid="aff-1"/></contrib><contrib contrib-type="author" corresp="yes"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0002-8736-1575</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Шубик</surname><given-names>Ю. В.</given-names></name><name name-style="western" xml:lang="en"><surname>Shubik</surname><given-names>Yu. V.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Шубик Юрий Викторович – eLibrary SPIN 6541-4328</p><p>Москва</p></bio><bio xml:lang="en"><p>Yuriy V. Shubik - eLibrary SPIN 6541-4328</p><p>Moscow</p></bio><xref ref-type="aff" rid="aff-1"/></contrib><contrib contrib-type="author" corresp="yes"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0001-9554-5553</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Берман</surname><given-names>М. В.</given-names></name><name name-style="western" xml:lang="en"><surname>Berman</surname><given-names>M. V.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Берман Михаил Валерьевич</p><p>Москва</p></bio><bio xml:lang="en"><p>Mikhail V. Berman</p><p>Moscow</p></bio><xref ref-type="aff" rid="aff-1"/></contrib><contrib contrib-type="author" corresp="yes"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0003-4903-5127</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Медведев</surname><given-names>М. М.</given-names></name><name name-style="western" xml:lang="en"><surname>Medvedev</surname><given-names>M. M.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Медведев Михаил Маркович – eLibrary SPIN 4404-5907</p><p>Москва</p></bio><bio xml:lang="en"><p>Mikhail M. Medvedev - eLibrary SPIN 4404-5907</p><p>Moscow</p></bio><xref ref-type="aff" rid="aff-1"/></contrib><contrib contrib-type="author" corresp="yes"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0001-5940-6492</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Ривин</surname><given-names>А. Е.</given-names></name><name name-style="western" xml:lang="en"><surname>Rivin</surname><given-names>A. E.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Ривин Алексей Евгеньевич – eLibrary SPIN 5218-7967</p><p>Москва</p></bio><bio xml:lang="en"><p>Alexey E. Rivin - eLibrary SPIN 5218-7967</p><p>Moscow</p></bio><xref ref-type="aff" rid="aff-1"/></contrib><contrib contrib-type="author" corresp="yes"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0003-2892-0047</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Пархомчук</surname><given-names>Д. С.</given-names></name><name name-style="western" xml:lang="en"><surname>Parkhomchuk</surname><given-names>D. S.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Пархомчук Демьян Степанович - eLibrary SPIN 4636-1536</p><p>Москва</p></bio><bio xml:lang="en"><p>Demyan S. Parkhomchuk - eLibrary SPIN 4636-1536</p><p>Moscow</p></bio><xref ref-type="aff" rid="aff-1"/></contrib><contrib contrib-type="author" corresp="yes"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0003-4480-437X</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Барыбин</surname><given-names>А. Е.</given-names></name><name name-style="western" xml:lang="en"><surname>Barybin</surname><given-names>A. E.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Барыбин Артем Евгеньевич</p><p>Москва</p></bio><bio xml:lang="en"><p>Artyom E. Barybin</p><p>Moscow</p></bio><xref ref-type="aff" rid="aff-1"/></contrib><contrib contrib-type="author" corresp="yes"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0003-0083-1675</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Баландин</surname><given-names>Д. А.</given-names></name><name name-style="western" xml:lang="en"><surname>Balandin</surname><given-names>D. А.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Баландин Дмитрий Андреевич</p><p>Москва</p></bio><bio xml:lang="en"><p>Dmitry A. Balandin</p><p>Moscow</p></bio><xref ref-type="aff" rid="aff-1"/></contrib><contrib contrib-type="author" corresp="yes"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0003-1415-3932</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Баталов</surname><given-names>Р. Е.</given-names></name><name name-style="western" xml:lang="en"><surname>Batalov</surname><given-names>R. E.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Баталов Роман Ефимович – eLibrary SPIN 1371-4429</p><p>Москва</p></bio><bio xml:lang="en"><p>Roman E. Batalov -eLibrary SPIN 1371-4429</p><p>Moscow</p></bio><xref ref-type="aff" rid="aff-1"/></contrib><contrib contrib-type="author" corresp="yes"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0003-3625-0266</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Терехов</surname><given-names>Д. С.</given-names></name><name name-style="western" xml:lang="en"><surname>Terekhov</surname><given-names>D. S.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Терехов Денис Сергеевич - eLibrary SPIN 1638-6136</p><p>Москва</p></bio><bio xml:lang="en"><p>Denis S. Terekhov - eLibrary SPIN 1638-6136</p><p>Moscow</p></bio><xref ref-type="aff" rid="aff-1"/></contrib><contrib contrib-type="author" corresp="yes"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0003-4080-7987</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Евстифеев</surname><given-names>И. В.</given-names></name><name name-style="western" xml:lang="en"><surname>Evstifeev</surname><given-names>I. V.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Евстифеев Иван Владимирович</p><p>Москва</p></bio><bio xml:lang="en"><p>Ivan V. Evstifeev</p><p>Moscow</p></bio><xref ref-type="aff" rid="aff-1"/></contrib><contrib contrib-type="author" corresp="yes"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0002-6132-0361</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Кильдеев</surname><given-names>И. Р.</given-names></name><name name-style="western" xml:lang="en"><surname>Kildeev</surname><given-names>I. R.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Кильдеев Ильгам Раисович</p><p>Москва</p></bio><bio xml:lang="en"><p>Ilham R. Kildeev</p><p>Moscow</p></bio><xref ref-type="aff" rid="aff-1"/></contrib><contrib contrib-type="author" corresp="yes"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0001-8638-0937</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Пятаева</surname><given-names>О. В.</given-names></name><name name-style="western" xml:lang="en"><surname>Pyataeva</surname><given-names>O. V.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Пятаева Ольга Владимировна - eLibrary SPIN 8357-9625</p><p>Москва</p></bio><bio xml:lang="en"><p>Olga V. Pyataeva - eLibrary SPIN 8357-9625</p><p>Moscow</p></bio><xref ref-type="aff" rid="aff-1"/></contrib><contrib contrib-type="author" corresp="yes"><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Зенин</surname><given-names>С. А.</given-names></name><name name-style="western" xml:lang="en"><surname>Zenin</surname><given-names>S. A.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Зенин Сергей Анатольевич – eLibrary SPIN 4546-3790</p><p>Москва</p></bio><bio xml:lang="en"><p>Sergey A. Zenin - eLibrary SPIN 4546-3790</p><p>Moscow</p></bio><xref ref-type="aff" rid="aff-1"/></contrib></contrib-group><aff-alternatives id="aff-1"><aff xml:lang="ru"><institution>Национальный медицинский исследовательский центр кардиологии</institution><country>Россия</country></aff><aff xml:lang="en"><institution>National Medical Research Center of Cardiology</institution><country>Russian Federation</country></aff></aff-alternatives><pub-date pub-type="collection"><year>2021</year></pub-date><pub-date pub-type="epub"><day>05</day><month>05</month><year>2021</year></pub-date><volume>17</volume><issue>2</issue><fpage>193</fpage><lpage>199</lpage><permissions><copyright-statement>Copyright &amp;#x00A9; Mironov N.Y., Yuricheva Y.A., Vlodzyanovskiy V.V., Sokolov S.F., Dzaurova K.M., Golitsyn S.P., Shubik Y.V., Berman M.V., Medvedev M.M., Rivin A.E., Parkhomchuk D.S., Barybin A.E., Balandin D.А., Batalov R.E., Terekhov D.S., Evstifeev I.V., Kildeev I.R., Pyataeva O.V., Zenin S.A., 2021</copyright-statement><copyright-year>2021</copyright-year><copyright-holder xml:lang="ru">Миронов Н.Ю., Юричева Ю.А., Влодзяновский В.В., Соколов С.Ф., Дзаурова Х.М., Голицын С.П., Шубик Ю.В., Берман М.В., Медведев М.М., Ривин А.Е., Пархомчук Д.С., Барыбин А.Е., Баландин Д.А., Баталов Р.Е., Терехов Д.С., Евстифеев И.В., Кильдеев И.Р., Пятаева О.В., Зенин С.А.</copyright-holder><copyright-holder xml:lang="en">Mironov N.Y., Yuricheva Y.A., Vlodzyanovskiy V.V., Sokolov S.F., Dzaurova K.M., Golitsyn S.P., Shubik Y.V., Berman M.V., Medvedev M.M., Rivin A.E., Parkhomchuk D.S., Barybin A.E., Balandin D.А., Batalov R.E., Terekhov D.S., Evstifeev I.V., Kildeev I.R., Pyataeva O.V., Zenin S.A.</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.rpcardio.online/jour/article/view/2427">https://www.rpcardio.online/jour/article/view/2427</self-uri><abstract><sec><title>Aim</title><p>Aim. We aimed to assess safety and effectiveness of class III antiarrhythmic drug Refralon for conversion of atrial fibrillation (AFib) and flutter (AFl) in post-registration trial and to compare data of primary center (National medical research center in cardiology) with data of other hospitals.</p></sec><sec><title>Material and Methods</title><p>Material and Methods. We performed retrospective cohort study in 727 patients (451 enrolled in primary center and 276 enrolled in other hospitals) admitted between June 24, 2014 and June 24, 2019. Refralon was administered for conversion of AFib and AFl in intense care units in escalating doses (10-30 mcg/kg) intravenously. Primary endpoints: restoration of sinus rhythm (SR) within 24 hours after the start of infusion of the study drug in a total dose of up to 30 pg / kg; registration of SR on an electrocardiogram (ECG) 24 hours after the start of the study drug infusion. Secondary endpoints: restoration of SR after infusion of the study drug at a dose of 10 pg / kg; restoration of SR after infusion of the studied drug in a total dose of up to 20 pg / kg; no recurrence of AFib/AFl after restoration of AFl within 24 hours of observation after the start of the study drug infusion.</p></sec><sec><title>Results</title><p>Results. Conversion to SR was achieved in 53,6% (391 of 727) after administration of 10 mcg/kg dose, in 73% (531 of 727) after administration of 20 mcg/kg dose and in 91,6% (666 of 727) after administration in dose up to 30 mcg/kg. SR was restored in 89% (402 of 451) of patients in primary center, and in 96% (264 of 276) of patients in other hospitals; 95% confidence interval (CI): (-0,1;-0,03). SR preserved 24 hours after conversion in 98% (650 of 666) successfully converted patients. In primary center SR preserved in 97% (390 of 402) successfully converted patients. In other hospitals - in 98,5% (260 of 264) successfully converted patients. 95 CI: (-0,09;0,06).</p></sec><sec><title>Conclusion</title><p>Conclusion: In post-registration multicenter trial Refralon demonstrated high effectiveness in conversion of AFib and AFl to SR. In other hospitals Refralon did not demonstrate lower effectiveness than in primary medical center.</p></sec></abstract><trans-abstract xml:lang="ru"><sec><title>Цель</title><p>Цель. Анализ пострегистрационного применения отечественного антиаритмического препарата III класса Рефралона в лечении фибрилляции (ФП) и трепетания предсердий (ТП) в реальной клинической практике. Сравнение результатов использования препарата первичным клиническим центром, обладающим наибольшим опытом его клинического применения (Национальный медицинский исследовательский центр кардиологии), с результатами других медицинских центров.</p></sec><sec><title>Материал и методы</title><p>Материал и методы. Ретроспективное многоцентровое когортное исследование по оценке эффективности и безопасности применения препарата в дозе до 30 мкг/кг для купирования ФП и ТП в период 24.06.2014 г. по 24.06.2019 г. В исследование включены 727 больных: 451 пациентов первичного центра и 276 больных других медицинских центров.</p></sec><sec><title>Первичные конечные точки</title><p>Первичные конечные точки: восстановление синусового ритма (СР) в течение 24 ч после начала введения препарата в суммарной дозе до 30 мкг/кг; регистрация СР на электрокардиограмме (ЭКГ) через 24 ч от начала введения препарата. Вторичные конечные точки: восстановление СР после введения препарата в дозе 10 мкг/кг; восстановление СР после введения препарата в суммарной дозе до 20 мкг/кг; отсутствие рецидивов ФП/ТП после восстановления СР в течение 24 ч наблюдения после начала введения препарата.</p></sec><sec><title>Результаты</title><p>Результаты. Восстановление СР было достигнуто в 53,6% случаев (391 из 727) после введения препарата в дозе 10 мкг/кг, в 73% (531 из 727 больных) - после увеличения дозы до 20 мкг/кг и в 91,6% (666 из 727) - при наращивании дозы до максимальной разрешенной 30 мкг/кг. СР был восстановлен у 89% (402 из 451) больных первичного центра, и у 96% (264 из 276) пациентов других медицинских центров; 95% доверительный интервал (ДИ): (-0,1;-0,03). Сохранение СР через 24 ч от начала введения препарата отмечено у 98% больных (650 из 666 больных с восстановленным СР). Среди больных первичного центра сохранение СР отмечено у 390 из 402 больных (97%). Среди пациентов других медицинских центров - у 260 из 264 больных (98,5%); 95% ДИ (-0,09; 0,06).</p></sec><sec><title>Заключение</title><p>Заключение. Антиаритмический препарат Рефралон демонстрирует высокую эффективность в купировании ФП и ТП в реальной клинической практике. Показатели эффективности при использовании в других медицинских центрах не уступают результатам первичного клинического центра, обладающего наибольшим опытом использования препарата.</p></sec></trans-abstract><kwd-group xml:lang="ru"><kwd>фибрилляция предсердий</kwd><kwd>трепетание предсердий</kwd><kwd>лечение</kwd><kwd>кардиоверсия</kwd><kwd>восстановление ритма</kwd><kwd>контроль ритма</kwd><kwd>лекарственные препараты</kwd><kwd>эффективность</kwd><kwd>безопасность</kwd></kwd-group><kwd-group xml:lang="en"><kwd>atrial fibrillation</kwd><kwd>atrial flutter</kwd><kwd>management</kwd><kwd>cardioversion</kwd><kwd>restoration of sinus rhythm</kwd><kwd>rhythm control</kwd><kwd>antiarrhythmic drugs</kwd><kwd>safety</kwd><kwd>effectiveness</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">January C.T., Wann L.S., Alpert J.S., et al. 2014 AHA/ACC/HRS guideline for the management of patients with atrial fibrillation. 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