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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="ru"><front><journal-meta><journal-id journal-id-type="publisher-id">sibmed</journal-id><journal-title-group><journal-title xml:lang="ru">Сибирский научный медицинский журнал</journal-title><trans-title-group xml:lang="en"><trans-title>Сибирский научный медицинский журнал</trans-title></trans-title-group></journal-title-group><issn pub-type="ppub">2410-2512</issn><issn pub-type="epub">2410-2520</issn><publisher><publisher-name>ИЦиГ СО РАН</publisher-name></publisher></journal-meta><article-meta><article-id pub-id-type="doi">10.18699/SSMJ20250115</article-id><article-id custom-type="elpub" pub-id-type="custom">sibmed-1963</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="ru"><subject>КЛИНИЧЕСКАЯ МЕДИЦИНА</subject></subj-group><subj-group subj-group-type="section-heading" xml:lang="en"><subject>CLINICAL MEDICINE</subject></subj-group></article-categories><title-group><article-title>Продолжительность и дисперсия интервала QT у пациентов с циррозом печени: диагностическое и прогностическое значение</article-title><trans-title-group xml:lang="en"><trans-title>Duration and dispersion of QT interval in patients with liver cirrhosis: diagnostic and prognostic value</trans-title></trans-title-group></title-group><contrib-group><contrib contrib-type="author" corresp="yes"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0001-5902-3803</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Генкель</surname><given-names>В. В.</given-names></name><name name-style="western" xml:lang="en"><surname>Genkel</surname><given-names>V. V.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Вадим Викторович Генкель, к. м. н.</p><p>454092; ул. Воровского, 64; Челябинск</p></bio><bio xml:lang="en"><p>Vadim V. Genkel, candidate of medical sciences</p><p>454092; Vorovskogo st., 64; Chelyabinsk</p></bio><email xlink:type="simple">henkel-07@mail.ru</email><xref ref-type="aff" rid="aff-1"/></contrib><contrib contrib-type="author" corresp="yes"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0002-0024-6970</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Поспелов</surname><given-names>В. Н.</given-names></name><name name-style="western" xml:lang="en"><surname>Pospelov</surname><given-names>V. N.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Вячеслав Николаевич Поспелов</p><p>454092; ул. Воровского, 64; Челябинск</p></bio><bio xml:lang="en"><p>Vyacheslav N. Pospelov</p><p>454092; Vorovskogo st., 64; Chelyabinsk</p></bio><email xlink:type="simple">pospelov_v@internet.ru</email><xref ref-type="aff" rid="aff-1"/></contrib><contrib contrib-type="author" corresp="yes"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0002-1136-7284</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Кузнецова</surname><given-names>А. С.</given-names></name><name name-style="western" xml:lang="en"><surname>Kuznetsova</surname><given-names>A. S.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Алла Сергеевна Кузнецова, к. м. н.</p><p>454092; ул. Воровского, 64; Челябинск</p></bio><bio xml:lang="en"><p>Alla S. Kuznetsova, candidate of medical sciences</p><p>454092; Vorovskogo st., 64; Chelyabinsk</p></bio><email xlink:type="simple">kuzja321@mail.ru</email><xref ref-type="aff" rid="aff-1"/></contrib><contrib contrib-type="author" corresp="yes"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0003-1565-4501</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Смагина</surname><given-names>Н. В.</given-names></name><name name-style="western" xml:lang="en"><surname>Smagina</surname><given-names>N. V.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Наталья Викторовна Смагина, к. м. н.</p><p>454092; ул. Воровского, 64; Челябинск</p></bio><bio xml:lang="en"><p>Natalia V. Smagina, candidate of medical sciences</p><p>454092; Vorovskogo st., 64; Chelyabinsk</p></bio><email xlink:type="simple">nsmagina@yandex.ru</email><xref ref-type="aff" rid="aff-1"/></contrib><contrib contrib-type="author" corresp="yes"><contrib-id contrib-id-type="orcid">https://orcid.org/0009-0001-9292-1127</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Ведерникова</surname><given-names>Е. О.</given-names></name><name name-style="western" xml:lang="en"><surname>Vedernikova</surname><given-names>E. O.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Елена Олеговна Ведерникова</p><p>454092; ул. Воровского, 64; Челябинск</p></bio><bio xml:lang="en"><p>Elena O. Vedernikova</p><p>454092; Vorovskogo st., 64; Chelyabinsk</p></bio><email xlink:type="simple">helen.114@mail.ru</email><xref ref-type="aff" rid="aff-1"/></contrib><contrib contrib-type="author" corresp="yes"><contrib-id contrib-id-type="orcid">https://orcid.org/0009-0008-5981-5825</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Ашмарина</surname><given-names>С. М.</given-names></name><name name-style="western" xml:lang="en"><surname>Ashmarina</surname><given-names>S. M.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Светлана Михайловна Ашмарина</p><p>454092; ул. Воровского, 64; Челябинск</p></bio><bio xml:lang="en"><p>Svetlana M. Ashmarina</p><p>454092; Vorovskogo st., 64; Chelyabinsk</p></bio><email xlink:type="simple">svetlana.ash02@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/0000-0002-7731-7730</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Шапошник</surname><given-names>И. И.</given-names></name><name name-style="western" xml:lang="en"><surname>Shaposhnik</surname><given-names>I. I.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Игорь Иосифович Шапошник, д. м. н., проф.</p><p>454092; ул. Воровского, 64; Челябинск</p></bio><bio xml:lang="en"><p>Igor I. Shaposhnik, doctor of medical sciences, professor</p><p>454092; Vorovskogo st., 64; Chelyabinsk</p></bio><email xlink:type="simple">shaposhnik@yandex.ru</email><xref ref-type="aff" rid="aff-1"/></contrib></contrib-group><aff-alternatives id="aff-1"><aff xml:lang="ru"><institution>Южно-Уральский государственный медицинский университет Минздрава России</institution><country>Россия</country></aff><aff xml:lang="en"><institution>South-Ural State Medical University of Minzdrav of Russia</institution><country>Russian Federation</country></aff></aff-alternatives><pub-date pub-type="collection"><year>2025</year></pub-date><pub-date pub-type="epub"><day>27</day><month>02</month><year>2025</year></pub-date><volume>45</volume><issue>1</issue><fpage>139</fpage><lpage>147</lpage><permissions><copyright-statement>Copyright &amp;#x00A9; Генкель В.В., Поспелов В.Н., Кузнецова А.С., Смагина Н.В., Ведерникова Е.О., Ашмарина С.М., Шапошник И.И., 2025</copyright-statement><copyright-year>2025</copyright-year><copyright-holder xml:lang="ru">Генкель В.В., Поспелов В.Н., Кузнецова А.С., Смагина Н.В., Ведерникова Е.О., Ашмарина С.М., Шапошник И.И.</copyright-holder><copyright-holder xml:lang="en">Genkel V.V., Pospelov V.N., Kuznetsova A.S., Smagina N.V., Vedernikova E.O., Ashmarina S.M., Shaposhnik I.I.</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://sibmed.elpub.ru/jour/article/view/1963">https://sibmed.elpub.ru/jour/article/view/1963</self-uri><abstract><p>   Данные о прогностической значимости и связи синдрома удлиненного интервала QT с риском нарушений ритма сердца при циррозе печени противоречивы. Одним из направлений дальнейших исследований в этой области является изучение значимости других электрокардиографических показателей, отражающих нарушение процессов реполяризации желудочков, у пациентов с циррозом печени.</p><p>   Цель исследования ‒ изучение диагностической и прогностической ценности электрокардиографических показателей, отражающих изменения электрической систолы сердца и гетерогенность реполяризации желудочков, в отношении наличия терминального цирроза печени и развития неблагоприятных исходов у пациентов с установленным диагнозом цирроза печени.</p><sec><title>   Материал и методы</title><p>   Материал и методы. В исследование включены 35 пациентов с установленным диагнозом цирроза печени и 20 сопоставимых по полу (p = 0,550) и возрасту (p = 0,376) лиц группы сравнения. Выраженность цирроза печени оценивали с использованием шкал MELD и Child-Turcotte-Pugh. У всех больных записывали и анализировали ЭКГ на электрокардиографе «Поли-Спектр-8/Е» (ООО «Нейрософт», г. Иваново).</p></sec><sec><title>   Результаты</title><p>   Результаты. Больные циррозом печени отличались значимо большими значениями продолжительности удлиненного интервала QT, скорректированного по частоте сердечных сокращений (QTc), чем лица группы сравнения (соответственно 458,0 [432,5; 482,7] и 418,5 [405,0; 432,0] мс) (медиана [25-й процентиль; 75-й процентиль]), и меньшими абсолютными и относительными по отношению к продолжительности интервала QT величинами интервала от пика зубца Т до его окончания (Tpeak–Tend). Степень тяжести цирроза печени, определяемая по шкале MELD, прямо коррелировала с длительностью интервала QTc (r = 0,355; p = 0,0396), дисперсии интервала QT (QTd) (r = 0,389; p = 0,0228) и дисперсии интервала QTс (QTcd) (r = 0,382; p = 0,0257). Продолжительность наблюдения составляла 3,96 [1,50; 8,59] месяца. Смерть от причин, связанных с циррозом печени, зарегистрирована у 12 (34,3 %) пациентов. Среди исследуемых электрокардиографических показателей добавление в прогностическую модель к шкале MELD величины интервала QTc позволяло добиться увеличения эффективности модели и достичь статистической значимости (площадь под кривой 0,763 (95 %-й доверительный интервал 0,633–0,894), p = 0,0088).</p></sec><sec><title>   Заключение</title><p>   Заключение. Пациенты с циррозом печени имели большие, чем лица группы сравнения, значения QTc, меньшие – Tpeak–Tend, Tpeak–Tend/QT и Tpeak–Tend/QTc. Степень тяжести цирроза печени, определяемая по шкале MELD, ассоциировалась с увеличением продолжительности интервалов QTc, QTd и QTcd. Добавление величины интервала QTc к шкале MELD позволило добиться увеличения эффективности модели прогнозирования смерти от всех причин.</p></sec></abstract><trans-abstract xml:lang="en"><p>   The data on the prognostic significance and relationship of the prolonged QT syndrome with the risk of cardiac rhythm disturbances in liver cirrhosis are contradictory. One of the directions of further research in this area is to study the significance of other electrocardiographic parameters reflecting ventricular repolarization disturbance in patients with liver cirrhosis.</p><p>   Aim of the study was to investigate diagnostic and prognostic value of electrocardiographic parameters reflecting changes in heart electrical systole and heterogeneity of ventricular repolarization in relation to the presence of terminal liver cirrhosis and development of adverse outcomes in patients with established diagnosis of liver cirrhosis.</p><sec><title>   Material and methods</title><p>   Material and methods. The study included 35 patients with an established diagnosis of liver cirrhosis and 20 comparison group individuals matched by gender (p = 0.550) and age (p = 0.376). The severity of liver cirrhosis was assessed using the MELD and Child-Turcotte-Pugh scales. All patients had ECG recorded and analyzed on a Poli-Spectrum-8/E electrocardiograph (Neurosoft LLC, Ivanovo).</p></sec><sec><title>   Results</title><p>   Results. Patients with liver cirrhosis had significantly longer QTc interval durations than those in the comparison group (458.0 [432.5; 482.7] and 418.5 [405.0; 432.0] ms, respectively) (median [25th percentile; 75th percentile]) and smaller absolute and relative to QT interval Tpeak-Tend interval values. The severity of liver cirrhosis, as determined by the MELD scale, was directly correlated with QTc (r = 0.355; p = 0.0396), QTd (r = 0.389; p = 0.0228) and QTcd (r = 0.382; p = 0.0257) interval duration. The follow-up period was 3.96 [1.50; 8.59] months. Death from cirrhosis-related causes was recorded in 12 (34.3 %) patients. Among the electrocardiographic parameters investigated, the addition of QTc interval duration to the MELD scale in the prognostic model made it possible to increase the model performance and achieve statistical significance (area under the curve 0.763 (95 % confidence interval 0.633–0.894), p = 0.0088).</p></sec><sec><title>   Conclusions</title><p>   Conclusions. Patients with liver had higher QTc values than those in the comparison group and lower Tpeak-Tend, Tpeak-Tend/QT and Tpeak-Tend/QTc values. The severity of liver cirrhosis, as determined by the MELD scale, was associated with an increase in QTc, QTd and QTcd duration. Adding QTc interval duration to the MELD scale allowed for the increase in the performance of the all-cause mortality prediction model.</p></sec></trans-abstract><kwd-group xml:lang="ru"><kwd>цирроз печени</kwd><kwd>индекс MELD</kwd><kwd>интервал QT</kwd><kwd>нарушение процессов реполяризации желудочков</kwd></kwd-group><kwd-group xml:lang="en"><kwd>liver cirrhosis</kwd><kwd>MELD index</kwd><kwd>QT interval</kwd><kwd>ventricular repolarization disorder</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">Møller S., Lee S.S. Cirrhotic cardiomyopathy. J. Hepatol. 2018;69(4):958–960. doi: 10.1016/j.jhep.2018.01.006</mixed-citation><mixed-citation xml:lang="en">Møller S., Lee S.S. Cirrhotic cardiomyopathy. J. 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