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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">10.20996/1819-6446-2021-03-04</article-id><article-id custom-type="elpub" pub-id-type="custom">rpcardio-2429</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>Anticoagulant Therapy in Patients with Non-valvular Atrial Fibrillation in Real Clinical Practice: in Appropriate Dose Reductions</article-title><trans-title-group xml:lang="ru"><trans-title>Антикоагулянтная терапия у больных с неклапанной фибрилляцией предсердий в реальной клинической практике: необоснованное применение сниженных доз</trans-title></trans-title-group></title-group><contrib-group><contrib contrib-type="author" corresp="yes"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0001-7293-1144</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Ионин</surname><given-names>В. А.</given-names></name><name name-style="western" xml:lang="en"><surname>Ionin</surname><given-names>V. A.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Ионин Валерий Александрович – eLibrary SPIN 4882-7962</p><p>Санкт-Петербург</p></bio><bio xml:lang="en"><p>Valery A. Ionin - eLibrary SPIN 4882-7962</p><p>Saint-Petersburg</p></bio><email xlink:type="simple">ionin.v.a@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/0000-0002-1017-4966</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Близнюк</surname><given-names>О. И.</given-names></name><name name-style="western" xml:lang="en"><surname>Bliznuk</surname><given-names>O. I.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Близнюк Ольга Игоревна – eLibrary SPIN 9444-2993</p><p>Санкт-Петербург</p></bio><bio xml:lang="en"><p>Olga I. Bliznyuk - eLibrary SPIN 9444-2993</p><p>Saint-Petersburg</p></bio><xref ref-type="aff" rid="aff-2"/></contrib><contrib contrib-type="author" corresp="yes"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0002-8788-0076</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Баранова</surname><given-names>Е. И.</given-names></name><name name-style="western" xml:lang="en"><surname>Baranova</surname><given-names>E. I.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Баранова Елена Ивановна – eLibrary SPIN 2569-0316</p><p>Санкт-Петербург</p></bio><bio xml:lang="en"><p>Elena I. Baranova - eLibrary SPIN 2569-0316</p><p>Saint-Petersburg</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/0000-0003-2929-0980</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Шляхто</surname><given-names>Е. В.</given-names></name><name name-style="western" xml:lang="en"><surname>Shlyakhto</surname><given-names>E. V.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Шляхто Евгений Владимирович – eLibrary SPIN 6679-7621</p><p>Санкт-Петербург</p></bio><bio xml:lang="en"><p>Evgeniy V. Shlyakhto - eLibrary SPIN 6679-7621</p><p>Saint-Petersburg</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 имени В.А. Алмазова; Первый Санкт-Петербургский государственный медицинский университет им. академика И.П. Павлова</institution><country>Россия</country></aff><aff xml:lang="en"><institution>Almazov National Medical Research Centre; Pavlov University</institution><country>Russian Federation</country></aff></aff-alternatives><aff-alternatives id="aff-2"><aff xml:lang="ru"><institution>Первый Санкт-Петербургский государственный медицинский университет им. академика И.П. Павлова</institution><country>Россия</country></aff><aff xml:lang="en"><institution>Pavlov University</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>206</fpage><lpage>211</lpage><permissions><copyright-statement>Copyright &amp;#x00A9; Ionin V.A., Bliznuk O.I., Baranova E.I., Shlyakhto E.V., 2021</copyright-statement><copyright-year>2021</copyright-year><copyright-holder xml:lang="ru">Ионин В.А., Близнюк О.И., Баранова Е.И., Шляхто Е.В.</copyright-holder><copyright-holder xml:lang="en">Ionin V.A., Bliznuk O.I., Baranova E.I., Shlyakhto 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.rpcardio.online/jour/article/view/2429">https://www.rpcardio.online/jour/article/view/2429</self-uri><abstract><sec><title>Aim</title><p>Aim. To study the frequency of administration of direct oral anticoagulant (DOACs) in doses recommended and not recommended by the instructions of the drugs in non-valve atrial fibrillation (AF) patients.</p></sec><sec><title>Material and methods</title><p>Material and methods. 10663 case histories of patients hospitalized for 5 years (2014-2018) were studied, 1307/10663 (12,3%) case histories of patients with AF were selected. In patients with AF, the risk of stroke and systemic embolism, the risk of bleeding, the anticoagulant therapy (ACT) recommended at the prehospital stage and its adequacy was evaluated.</p></sec><sec><title>Results</title><p>Results. 1 261/1 307 (96,5%) patients had a non-valve AF. The risk of stroke and systemic embolism was 4,7±1,5 (CHA2DS2-VASс), 97,5% of patients with non-valve AF (1229/1261) needed ACT. Only 665/1229 (54.1%) patients with AF received ACT at the time of hospitalization and 578/1229 (47,0%) of patients did not receive ACT. Before hospitalization 281/665 (42,3%) patients received vitamin K antagonist (warfarin). The international normalized ratio in the target range (2,0-3,0) was in 111/281 (39,5%) patients. 57,7% (384/665) outpatients with AF received NOAC: rivaroxaban - 180/384 (46,9%) patients, dabigatran etexilate - 110/384 (28,6%) patients, apixaban - 94/384 (24,5%) patients. Inappropriate reduced doses of DOAC were revealed in 68/384 (17,7%) patients: apixaban - 23,4%, dabigatran - 16,4% and rivaroxaban - 15,6% (p&gt;0,05).</p></sec><sec><title>Conclusion</title><p>Conclusion. In real clinical practice 42,3% AF patients used warfarin, only 39,5% of them had INR in target values. DOAC in inappropriate reduced doses used 17,7% patients.</p></sec></abstract><trans-abstract xml:lang="ru"><sec><title>Цель</title><p>Цель. Изучить частоту применения прямых оральных антикоагулянтов (ПОАК) у больных с неклапанной фибрилляцией предсердий (ФП) в реальной амбулаторной клинической практике в дозах, рекомендованных и не рекомендованных инструкциями препаратов.</p></sec><sec><title>Материал и методы</title><p>Материал и методы. Из 10663 историй болезней пациентов, госпитализированных за 5 лет (2014-2018 гг.) в терапевтическую клинику ПСПбГМУ, проанализировано 1307 (12,3%) историй болезней пациентов с ФП, у которых оценен риск инсульта и кровотечений, обоснованность антикоагулянтной терапии (АКТ) на амбулаторном этапе.</p></sec><sec><title>Результаты</title><p>Результаты. У 1 261 (96,5%) пациентов выявлена неклапанная форма ФП, риск инсульта и системных эмболий - 4,7±1,5 баллов (CHA2DS2-VASC), и 97,5% этих пациентов имели показания к АКТ АКТ получали 54,1% (665/1229) пациентов при госпитализации в стационар. Варфарин получали 42,3% (281/665) пациентов. Международное нормализованное отношение на момент госпитализации в целевом диапазоне (2,0-3,0) было у 111 (39,5%) пациентов, принимающих варфарин. ПОАК на амбулаторном этапе получали 57,7% (384/665) больных ФП: ривароксабан - 180 (46,9%), дабигатран - 110 (28,6%) больных, апиксабан - 94 (24,5%). Выявлено частое применения необоснованно сниженных доз антикоагулянтов у пациентов, получавших ПОАК - 17,7% (68/384), в том числе, 22 (23,4%) для апиксабана, 18 (16,4%) для дабигатрана и 28 (15,6%) для ривароксабана (р&gt;0,05).</p></sec><sec><title>Заключение</title><p>Заключение. У 42,3% больных с неклапанной ФП в реальной клинической практике используется варфарин, целевые значения МНО определены у 39,5% этих больных. ПОАК в амбулаторной практике применяются у 57,7% больных ФП, в том числе, у 17,7% пациентов в необоснованно сниженных дозах.</p></sec></trans-abstract><kwd-group xml:lang="ru"><kwd>фибрилляция предсердий</kwd><kwd>апиксабан</kwd><kwd>дабигатран</kwd><kwd>ривароксабан</kwd><kwd>необоснованно низкие дозы антикоагулянтов</kwd></kwd-group><kwd-group xml:lang="en"><kwd>atrial fibrillation</kwd><kwd>apixaban</kwd><kwd>dabigatran</kwd><kwd>rivaroxaban</kwd><kwd>inappropriate dose reduction</kwd></kwd-group><funding-group><funding-statement xml:lang="ru">Исследование выполнено при финансовой поддержке гранта Российского научного фонда №17-75-30052.Авторы статьи выражают благодарность Петрищевой Е.Ю., Ма И., Борисову Г.И., Скуридину Д.С. за помощь в создании базы пациентов с ФП</funding-statement><funding-statement xml:lang="en">The study was funded by a grant of the Russian Scientific Foundation №17-75-30052. 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