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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">Terapevticheskii arkhiv</journal-id><journal-title-group><journal-title xml:lang="en">Terapevticheskii arkhiv</journal-title><trans-title-group xml:lang="ru"><trans-title>Терапевтический архив</trans-title></trans-title-group></journal-title-group><issn publication-format="print">0040-3660</issn><issn publication-format="electronic">2309-5342</issn><publisher><publisher-name xml:lang="en">LLC Obyedinennaya Redaktsiya</publisher-name></publisher></journal-meta><article-meta><article-id pub-id-type="publisher-id">31674</article-id><article-categories><subj-group subj-group-type="toc-heading" xml:lang="en"><subject>Editorial article</subject></subj-group><subj-group subj-group-type="toc-heading" xml:lang="ru"><subject>Передовая статья</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">Refralon (niferidil) is a new class III antiarrhythmic agent for pharmacological cardioversion for persistent atrial fibrillation and atrial flutter</article-title><trans-title-group xml:lang="ru"><trans-title>Рефралон (ниферидил) - новый антиаритмический препарат III класса для медикаментозной кардиоверсии персистирующей фибрилляции и трепетания предсердий</trans-title></trans-title-group></title-group><contrib-group><contrib contrib-type="author"><name-alternatives><name xml:lang="en"><surname>Maĭkov</surname><given-names>E B</given-names></name><name xml:lang="ru"><surname>Майков</surname><given-names>Е Б</given-names></name></name-alternatives><xref ref-type="aff" rid="aff1"/></contrib><contrib contrib-type="author"><name-alternatives><name xml:lang="en"><surname>Iuricheva</surname><given-names>Iu A</given-names></name><name xml:lang="ru"><surname>Юричева</surname><given-names>Ю А</given-names></name></name-alternatives><xref ref-type="aff" rid="aff1"/></contrib><contrib contrib-type="author"><name-alternatives><name xml:lang="en"><surname>Mironov</surname><given-names>N Iu</given-names></name><name xml:lang="ru"><surname>Миронов</surname><given-names>Н Ю</given-names></name></name-alternatives><xref ref-type="aff" rid="aff1"/></contrib><contrib contrib-type="author"><name-alternatives><name xml:lang="en"><surname>Sokolov</surname><given-names>S F</given-names></name><name xml:lang="ru"><surname>Соколов</surname><given-names>С Ф</given-names></name></name-alternatives><xref ref-type="aff" rid="aff1"/></contrib><contrib contrib-type="author"><name-alternatives><name xml:lang="en"><surname>Golitsyn</surname><given-names>S P</given-names></name><name xml:lang="ru"><surname>Голицын</surname><given-names>С П</given-names></name></name-alternatives><xref ref-type="aff" rid="aff1"/></contrib><contrib contrib-type="author"><name-alternatives><name xml:lang="en"><surname>Rozenshtraukh</surname><given-names>L V</given-names></name><name xml:lang="ru"><surname>Розенштраух</surname><given-names>Л В</given-names></name></name-alternatives><xref ref-type="aff" rid="aff1"/></contrib><contrib contrib-type="author"><name-alternatives><name xml:lang="en"><surname>Chazov</surname><given-names>E I</given-names></name><name xml:lang="ru"><surname>Чазов</surname><given-names>Е И</given-names></name></name-alternatives><xref ref-type="aff" rid="aff1"/></contrib></contrib-group><aff-alternatives id="aff1"><aff><institution xml:lang="en"></institution></aff><aff><institution xml:lang="ru">ФГБУ "Российский кардиологический научно-производственный комплекс" Минздрава России, Москва, Россия</institution></aff></aff-alternatives><pub-date date-type="pub" iso-8601-date="2015-01-15" publication-format="electronic"><day>15</day><month>01</month><year>2015</year></pub-date><volume>87</volume><issue>1</issue><issue-title xml:lang="en">VOL 87, NO1 ()</issue-title><issue-title xml:lang="ru">ТОМ 87, №1 (2015)</issue-title><fpage>38</fpage><lpage>48</lpage><history><date date-type="received" iso-8601-date="2020-04-10"><day>10</day><month>04</month><year>2020</year></date></history><permissions><copyright-statement xml:lang="en">Copyright ©; 2015, Consilium Medicum</copyright-statement><copyright-statement xml:lang="ru">Copyright ©; 2015, ООО "Консилиум Медикум"</copyright-statement><copyright-year>2015</copyright-year><copyright-holder xml:lang="en">Consilium Medicum</copyright-holder><copyright-holder xml:lang="ru">ООО "Консилиум Медикум"</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-sa/4.0</ali:license_ref></license></permissions><self-uri xlink:href="https://ter-arkhiv.ru/0040-3660/article/view/31674">https://ter-arkhiv.ru/0040-3660/article/view/31674</self-uri><abstract xml:lang="en"><p>Aim. To evaluate the efficacy and safety of refralon (niferidil), a new class III antiarrhythmic agent whose activity is related to the block of delayed rectifying potassium current and to the prolongation of atrial and ventricular action potential and refractory periods, when it is used as an agent for pharmacological cardioversion for atrial fibrillation (AF) and atrial flutter (AFL). Subjects and methods. The efficacy of the drug as 3 intravenous boluses of 10 µg/kg was evaluated in 134 patients (90 men; 57.8±11 years) with a mean AF duration of 3 (1.5; 6) months. Its effect was controlled by 24-hour Holter ECG monitoring. The criterion for its antiarrhythmic effect was 24-hour sinus rhythm (SR) recovery. Results. Niferidil restored SR in 47.7% of the patients with AF after administration of bolus 1, in 62% after bolus 2, and in 84.6% after bolus 3. SR was restored in all 100% patients with AFL. With the AF duration of less than 3 months, the efficacy of niferidil was 91.8%. There was nonsustained polymorphic ventricular tachycardia (VT) (torsade de pointes) in 1 (0.7%) patient and nonsustained monomorphic VT was stated in 5 (3.7%) patients. Conclusion. Pharmacological cardioversion with niferidil for persistent AF and VT may be regarded as a possible alternative to electrical cardioversion.</p></abstract><trans-abstract xml:lang="ru"><p>Резюме. Цель исследования. Оценка эффективности и безопасности рефралона (ниферидила) - нового антиаритмического препарата III класса, действие которого связано с блокадой калиевых токов задержанного выпрямления, удлинением потенциала действия и рефрактерных периодов в предсердиях и желудочках, при его применении в качестве средства для медикаментозной кардиоверсии при фибрилляции предсердий (ФП) и трепетании предсердий (ТП). Материалы и методы. Эффективность препарата в виде 3 болюсов по 10 мкг/кг внутривенно оценена у 134 больных (57,8±11 лет, 90 мужчин) при средней длительности ФП 3 (1,5; 6) мес. Действие препарата контролировалось при 24-часовом холтеровском мониторировании электрокардиограммы. Критерием антиаритмического эффекта было восстановление синусового ритма (СР) в течение 24 ч. Результаты. Ниферидил восстановил СР у 47,7% больных с ФП после введения 1-го болюса, у 62% - после введения 2-го и у 84,6% - после введения 3-го болюса. СР восстановлен у всех 100% больных с ТП. При длительности ФП менее 3 мес эффективность ниферидила составила 91,8%. Неустойчивая полиморфная желудочковая тахикардия (ЖТ) типа torsades de pointes отмечена в 1 (0,7%) случае. Неустойчивая мономорфная желудочковая тахикардия (ЖТ) констатирована у 5 (3,7%) больных. Заключение. Медикаментозная кардиоверсия персистирующей ФП и ТП с использованием ниферидила может рассматриваться как возможная альтернатива электрической кардиоверсии.</p></trans-abstract><kwd-group xml:lang="en"><kwd>refralon</kwd><kwd>niferidil</kwd><kwd>pharmacological cardioversion</kwd><kwd>III class antiarrhythmic agents</kwd><kwd>atrial fibrillation</kwd><kwd>atrial flutter.</kwd></kwd-group><kwd-group xml:lang="ru"><kwd>рефралон</kwd><kwd>ниферидил</kwd><kwd>медикаментозная кардиоверсия антиаритмические препараты III класса</kwd><kwd>фибрилляция предсердий</kwd><kwd>трепетание предсердий</kwd></kwd-group></article-meta></front><body></body><back><ref-list><ref id="B1"><label>1.</label><mixed-citation>Stewart S., Hart C.L., Hole D.J., McMurray J.J. Population prevalence, incidence, and predictors of atrial fibrillation in the Renfrew/Paisley study. Heart 2001; 86: 516-521.</mixed-citation></ref><ref id="B2"><label>2.</label><mixed-citation>Go A.S., Hylek E.M., Phillips K.A. et al. 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