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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">vestar</journal-id><journal-title-group><journal-title xml:lang="ru">Вестник аритмологии</journal-title><trans-title-group xml:lang="en"><trans-title>Journal of Arrhythmology</trans-title></trans-title-group></journal-title-group><issn pub-type="ppub">1561-8641</issn><issn pub-type="epub">2658-7327</issn><publisher><publisher-name>НАО «Инкарт»</publisher-name></publisher></journal-meta><article-meta><article-id pub-id-type="doi">10.35336/VA-2022-2-03</article-id><article-id custom-type="elpub" pub-id-type="custom">vestar-1088</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>ОРИГИНАЛЬНЫЕ ИССЛЕДОВАНИЯ</subject></subj-group><subj-group subj-group-type="section-heading" xml:lang="en"><subject>ORIGINAL ARTICLES</subject></subj-group></article-categories><title-group><article-title>Традиционные и новые электрокардиографические предикторы неустойчивой полиморфной желудочковой тахикардии на фоне лекарственно-индуцированного удлинения интервала QT</article-title><trans-title-group xml:lang="en"><trans-title>Traditional and new electrocardiographic predictors of non-sustained polymorphic ventricular tachycardia caused by drug-induced long QT syndrome</trans-title></trans-title-group></title-group><contrib-group><contrib contrib-type="author" corresp="yes"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0001-5211-709X</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Колоцей</surname><given-names>Л. В.</given-names></name><name name-style="western" xml:lang="en"><surname>Kalatsei</surname><given-names>L. V.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Людмила Владимировна Колоцей</p><p>г. Гродно, ул. Горького, д. 80</p></bio><bio xml:lang="en"><p>Liudmila Kalatsei</p><p>Grodno, 80 Gorkogo str. </p></bio><email xlink:type="simple">lkolotsey@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/0000-0002-1706-1243</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Снежицкий</surname><given-names>В. А.</given-names></name><name name-style="western" xml:lang="en"><surname>Snezhitskiy</surname><given-names>V. A.</given-names></name></name-alternatives><bio xml:lang="ru"><p>г. Гродно, ул. Горького, д. 80</p></bio><bio xml:lang="en"><p>Grodno, 80 Gorkogo str. </p></bio><xref ref-type="aff" rid="aff-1"/></contrib></contrib-group><aff-alternatives id="aff-1"><aff xml:lang="ru"><institution>УО «Гродненский государственный медицинский университет»</institution><country>Беларусь</country></aff><aff xml:lang="en"><institution>Grodno State Medical University</institution><country>Belarus</country></aff></aff-alternatives><pub-date pub-type="collection"><year>2022</year></pub-date><pub-date pub-type="epub"><day>23</day><month>06</month><year>2022</year></pub-date><volume>29</volume><issue>2</issue><fpage>30</fpage><lpage>40</lpage><permissions><copyright-statement>Copyright &amp;#x00A9; Колоцей Л.В., Снежицкий В.А., 2022</copyright-statement><copyright-year>2022</copyright-year><copyright-holder xml:lang="ru">Колоцей Л.В., Снежицкий В.А.</copyright-holder><copyright-holder xml:lang="en">Kalatsei L.V., Snezhitskiy V.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://vestar.elpub.ru/jour/article/view/1088">https://vestar.elpub.ru/jour/article/view/1088</self-uri><abstract><sec><title>Цель</title><p>Цель. Выявить электрокардиографические (ЭКГ) предикторы развития лекарственно-индуцированной неустойчивой полиморфной желудочковой тахикардии (ПЖТ).</p></sec><sec><title>Методы исследования</title><p>Методы исследования. В исследование включено 110 пациентов с ишемической болезнью сердца и/ или артериальной гипертензией и нарушениями ритма сердца, принимавших антиаритмические препараты III класса (амиодарон либо соталол). В зависимости от наличия или отсутствия лекарственно-индуцированного синдрома удлиненного интервала QT (СУИ QT), пациенты были разделены на 2 группы: «СУИ QT» (n=64) и «Без СУИ QT» (n=46). По наличию или отсутствию неустойчивой ПЖТ пациенты с лекарственно-индуцированным СУИ QT были дополнительно разделены на группы «СУИ QT с ПЖТ» (n=17) и «СУИ QT без ПЖТ» (n=47). Всем пациентам проводились клинико-лабораторные и инструментальные исследования, включавшие в себя сбор анамнеза, физикальное исследование, эхокардиографическое исследование, холтеровское мониторирование, общеклинические лабораторные исследования, а также запись ЭКГ в 12-ти отведениях до начала и во время приема антиаритмических препаратов.</p></sec><sec><title>Результаты исследования</title><p>Результаты исследования. В группе пациентов с СУИ QT было достоверно больше представленности ПЖТ, чем в группе без СУИ QT (p=0,017). При анализе исходных показателей стандартной ЭКГ пациентов между исследуемыми группами пациентов не было выявлено достоверных различий, за исключением большей продолжительности корригированного интервала JT (p=0,03) у пациентов с СУИ QT и неустойчивой ПЖТ по сравнению с пациентами без СУИ QT. При сопоставлении показателей, характеризующих реполяризацию миокарда желудочков, было установлено, что у пациентов с СУИ QT и неустойчивой ПЖТ отмечалась достоверно большая продолжительность интервала QT (p&lt;0,05) и корригированных интервалов QT и JT (p&lt;0,001) по сравнению c группой без СУИ QT и подгруппой с СУИ QT без неустойчивой ПЖТ. Значения показателей баланса деполяризации и реполяризации миокарда желудочков (индекс кардиоэлектрофизиологического баланса (КЭБ) (QT/QRS) и корригированный индекс КЭБ (QTc/QRS)) были достоверно выше у пациентов с СУИ QT и неустойчивой ПЖТ (p&lt;0,001). По итогам проведенного анализа таблиц сопряженности самым информативным предиктором развития неустойчивой ПЖТ было значение корригированного индекса КЭБ ≥5,81 (ОШ=7,294, 95% ДИ [4,245-11,532]). По результатам однофакторного ROC-анализа значение корригированного индекса КЭБ ≥5,81 продемонстрировало высокие показатели чувствительности (94,1%) и специфичности (84,9%), а также достаточно высокую площадь под ROC-кривой (0,901).</p></sec><sec><title>Выводы</title><p>Выводы. Полученные нами результаты указывают на то, что значение корригированного индекса кардиоэлектрофизиологического баланса ≥5,81 может использоваться для прогнозирования возникновения неустойчивой ПЖТ у пациентов с лекарственно-индуцированным удлинением интервала QT на фоне приема амиодарона и соталола в дополнение к существующим ЭКГ показателям.</p></sec><sec><title> </title><p> </p></sec><sec><title> </title><p> </p></sec><sec><title> </title><p> </p></sec><sec><title> </title><p> </p></sec><sec><title> </title><p> </p></sec></abstract><trans-abstract xml:lang="en"><sec><title>Aim</title><p>Aim. To identify electrocardiographic (ECG) predictors of drug-induced non-sustained polymorphic ventricular tachycardia (PVT).</p></sec><sec><title>Material and methods</title><p>Material and methods. The study included 110 patients with ischemic heart disease and /or arterial hypertension and cardiac arrhythmias who were taking class III antiarrhythmic drugs (amiodarone or sotalol). According to the presence or absence of the drug-induced QT interval prolongation (Bazett) (greater than 450 ms in men and greater than 470 ms in women), the patients were divided into 2 groups: «LQTS» (n=64) and «Non LQTS» (n=46). According to the presence or absence of non-sustained PVT, patients with drug-induced LQTS were additionally divided into the «PVT» (n=17) and «Non PVT» (n=47) groups. All patients underwent clinical, laboratory and instrumental examinations, which included taking anamnesis, physical examination, echocardiography, Holter monitoring, general clinical laboratory examinations, 12-lead ECG recording before and while taking antiarrhythmic drugs.</p></sec><sec><title>Results</title><p>Results. In the «LQTS» group of patients, PVT was significantly more common than in the «non LQTS» group (p=0.017). When analyzing the baseline ECG parameters recorded before the initiation of antiarrhythmic therapy, no significant differences were found between the groups except for a greater QT interval dispersion in the group of patients with LQTS and non-sustained PVT compared with patients without LQTS (p=0.03). While receiving antiarrhythmic therapy, patients with LQTS and non-sustained PVT had a longer duration of the QT interval (p&lt;0.05), as well as the duration of the corrected QT and JT intervals (p&lt;0.001) compared with group of patients without LQTS and subgroup without non-sustained PVT. The values of the parameters of the balance of depolarization and repolarization of the ventricular myocardium (iCEB and iCEBc) were significantly higher in patients with LQTS and non-sustained PVT (p&lt;0.001). Based on the results of the analysis of contingency tables, the most effective predictor of non-sustained PVT was an iCEBc value ≥5.81 (OR=7.294, 95% CI [4,245-11,532]). According to the results of one-way ROC-analysis, the iCEBc value ≥5.81 demonstrated high sensitivity (94.1%) and specificity (84.9%), as well as a fairly high area under the ROC-curve (0.901).</p></sec><sec><title>Conclusions</title><p>Conclusions. Our results indicate that the value of the corrected index of the cardioelectrophysiological balance ≥5.81 can be used in the prediction of non-sustained PVT in patients with QT interval prolongation induced by amiodarone and sotalol in addition to the existing ECG parameters.</p></sec></trans-abstract><kwd-group xml:lang="ru"><kwd>интервал QT</kwd><kwd>лекарственно-индуцированный синдром удлиненного интервала QT</kwd><kwd>антиаритмические препараты</kwd><kwd>неустойчивая полиморфная желудочковая тахикардия</kwd><kwd>электрокардиография</kwd><kwd>реполяризация</kwd><kwd>дисперсия интервала QT</kwd><kwd>фрагментация комплекса QRS</kwd><kwd>корригированный индекс кардиоэлектрофизиологического баланса</kwd></kwd-group><kwd-group xml:lang="en"><kwd>QT interval</kwd><kwd>drug-induced long QT syndrome</kwd><kwd>antiarrhythmic drugs</kwd><kwd>non-sustained polymorphic ventricular tachycardia</kwd><kwd>electrocardiography</kwd><kwd>repolarization</kwd><kwd>QT interval dispersion</kwd><kwd>QRS fragmentation</kwd><kwd>corrected index of cardioelectrophysiological balance</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">Tester DJ, Ackerman MJ. 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