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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">zdor</journal-id><journal-title-group><journal-title xml:lang="ru">Проблемы здоровья и экологии</journal-title><trans-title-group xml:lang="en"><trans-title>Health and Ecology Issues</trans-title></trans-title-group></journal-title-group><issn pub-type="ppub">2220-0967</issn><issn pub-type="epub">2708-6011</issn><publisher><publisher-name>Gomel State Medical University</publisher-name></publisher></journal-meta><article-meta><article-id pub-id-type="doi">10.51523/2708-6011.2016-13-3-3</article-id><article-id custom-type="elpub" pub-id-type="custom">zdor-1705</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>ОБЗОРЫ И ЛЕКЦИИ</subject></subj-group><subj-group subj-group-type="section-heading" xml:lang="en"><subject>REVIEWS AND LECTURES</subject></subj-group></article-categories><title-group><article-title>СИНДРОМ УДЛИНЕННОГО ИНТЕРВАЛА QT И ЕГО РОЛЬ В ВОЗНИКНОВЕНИИ СЛОЖНЫХ НАРУШЕНИЙ РИТМА СЕРДЦА И ВНЕЗАПНОЙ СМЕРТИ</article-title><trans-title-group xml:lang="en"><trans-title>Long QT syndrome and its role in THE development of severe heart rhythm disturbances and sudden death</trans-title></trans-title-group></title-group><contrib-group><contrib contrib-type="author" corresp="yes"><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Ковальчук</surname><given-names>Л. С.</given-names></name><name name-style="western" xml:lang="en"><surname>Kovalchuk</surname><given-names>L. S.</given-names></name></name-alternatives><email xlink:type="simple">noemail@neicon.ru</email><xref ref-type="aff" rid="aff-1"/></contrib></contrib-group><aff-alternatives id="aff-1"><aff xml:lang="ru"><institution>Гомельский государственный медицинский университет</institution></aff><aff xml:lang="en"><institution>Gomel State Medical University</institution></aff></aff-alternatives><pub-date pub-type="collection"><year>2016</year></pub-date><pub-date pub-type="epub"><day>28</day><month>09</month><year>2016</year></pub-date><volume>0</volume><issue>3</issue><fpage>13</fpage><lpage>19</lpage><permissions><copyright-statement>Copyright &amp;#x00A9; Ковальчук Л.С., 2016</copyright-statement><copyright-year>2016</copyright-year><copyright-holder xml:lang="ru">Ковальчук Л.С.</copyright-holder><copyright-holder xml:lang="en">Kovalchuk L.S.</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://journal.gsmu.by/jour/article/view/1705">https://journal.gsmu.by/jour/article/view/1705</self-uri><abstract><p>В статье представлена информация из отечественных и зарубежных источников о значимости синдрома удлиненного интервала QT на электрокардиограмме как предиктора сложных нарушений ритма сердца и внезапной смерти. Рассмотрена патофизиология данного синдрома, в механизме которого значимую роль играет дефицит внутриклеточного магния, что и определяет терапевтические аспекты, приводящие к нормализации интервала QT.</p></abstract><trans-abstract xml:lang="en"><p>The article presents information from national and foreign sources on the significance of long QT syndrome on the electrocardiogram as a predictor of severe heart rhythm disturbances and sudden death. It considers the pathologic physiology of the present syndrome, the deficiency of intracellular magnesium plays an important part in its mechanism, which determines the therapeutic aspects leading to normalization of the QT interval</p></trans-abstract><kwd-group xml:lang="ru"><kwd>синдром удлиненного интервала QT</kwd><kwd>дисперсия интервала QT</kwd><kwd>магния сульфат</kwd><kwd>пароксизм желудочковой тахикардии</kwd><kwd>внезапная смерть</kwd><kwd>long QT syndrome</kwd><kwd>dispersion of the QT interval</kwd><kwd>magnesium sulphate</kwd><kwd>method of measurement of the QT interval</kwd><kwd>paroxysm of ventricular tachycardia</kwd><kwd>sudden death</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">Duration of the QT interval and total and cardiovascular mortality in healthy persons. (The Framingham Heart Study experience). Am.] / R. J. 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