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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">Kazan medical journal</journal-id><journal-title-group><journal-title xml:lang="en">Kazan medical journal</journal-title><trans-title-group xml:lang="ru"><trans-title>Казанский медицинский журнал</trans-title></trans-title-group></journal-title-group><issn publication-format="print">0368-4814</issn><issn publication-format="electronic">2587-9359</issn><publisher><publisher-name xml:lang="en">Eco-Vector</publisher-name></publisher></journal-meta><article-meta><article-id pub-id-type="publisher-id">63427</article-id><article-id pub-id-type="doi">10.17816/kazmj63427</article-id><article-categories><subj-group subj-group-type="toc-heading" xml:lang="en"><subject>Articles</subject></subj-group><subj-group subj-group-type="toc-heading" xml:lang="ru"><subject>Статьи</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">Prognostic importance of late potentials of ventricles and variability of cardiac rhythm in patients with ischemic cardiac disease</article-title><trans-title-group xml:lang="ru"><trans-title>Прогностическая значимость поздних потенциалов желудочков и вариабельности ритма сердца у больных ИБС</trans-title></trans-title-group></title-group><contrib-group><contrib contrib-type="author"><name-alternatives><name xml:lang="en"><surname>Oleinikov</surname><given-names>V. E.</given-names></name><name xml:lang="ru"><surname>Олейников</surname><given-names>В. Э.</given-names></name></name-alternatives><address><country country="RU">Russian Federation</country></address><bio xml:lang="en"><p>Professor, Head of the Department of Internal Medicine</p></bio><bio xml:lang="ru"><p>Профессор, заведуюший кафедрой внутренних болезней </p></bio><email>info@eco-vector.com</email><xref ref-type="aff" rid="aff1"/><xref ref-type="aff" rid="aff2"/></contrib><contrib contrib-type="author"><name-alternatives><name xml:lang="en"><surname>Pozdnyakova</surname><given-names>N. V.</given-names></name><name xml:lang="ru"><surname>Позднякова</surname><given-names>Н. В.</given-names></name></name-alternatives><address><country country="RU">Russian Federation</country></address><bio xml:lang="en"><p>Department of Internal Medicine</p></bio><bio xml:lang="ru"><p>Кафедра внутренних болезней</p></bio><email>info@eco-vector.com</email><xref ref-type="aff" rid="aff1"/><xref ref-type="aff" rid="aff2"/></contrib></contrib-group><aff-alternatives id="aff1"><aff><institution xml:lang="en">Penza Institute for Advanced Training of Doctors</institution></aff><aff><institution xml:lang="ru">Пензенский институт усовершенствования врачей</institution></aff></aff-alternatives><aff-alternatives id="aff2"><aff><institution xml:lang="en">MSCh-59</institution></aff><aff><institution xml:lang="ru">МСЧ-59</institution></aff></aff-alternatives><pub-date date-type="pub" iso-8601-date="1998-01-15" publication-format="electronic"><day>15</day><month>01</month><year>1998</year></pub-date><volume>79</volume><issue>1</issue><issue-title xml:lang="en"/><issue-title xml:lang="ru"/><fpage>19</fpage><lpage>22</lpage><history><date date-type="received" iso-8601-date="2021-03-15"><day>15</day><month>03</month><year>2021</year></date><date date-type="accepted" iso-8601-date="2021-03-15"><day>15</day><month>03</month><year>2021</year></date></history><permissions><copyright-statement xml:lang="en">Copyright ©; 1998, Oleinikov V.E., Pozdnyakova N.V.</copyright-statement><copyright-statement xml:lang="ru">Copyright ©; 1998, Олейников В.Э., Позднякова Н.В.</copyright-statement><copyright-year>1998</copyright-year><copyright-holder xml:lang="en">Oleinikov V.E., Pozdnyakova N.V.</copyright-holder><copyright-holder xml:lang="ru">Олейников В.Э., Позднякова Н.В.</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/">http://creativecommons.org/licenses/by-nc-sa/4.0</ali:license_ref></license></permissions><self-uri xlink:href="https://kazanmedjournal.ru/kazanmedj/article/view/63427">https://kazanmedjournal.ru/kazanmedj/article/view/63427</self-uri><abstract xml:lang="en"><p>The combined analysis of cardiac rhythm variability indices, signal-averaged electrocardiogram noting late potentials of ventricles is performed. As many as 158 patients with various forms of ischemic cardiac disease and 70 persons of the control group are examined. Signal-averaged electrocardiograms are registered in dynamics during 18 months, cardiac rhythm variability indices are determined, echocardiography is performed.</p></abstract><trans-abstract xml:lang="ru"><p>На долю ИБС приходится 48,5% от всех причин смерти, вызванных сердечно-сосудистыми заболеваниями. В течение первого года после инфаркта миокарда умирают около 10% больных, причем более половины из них внезапно [2]. Особую значимость в связи с этим приобретает свое временное прогнозирование электрической нестабильности миокарда, являющейся ключевым фактором в генезе фатальных нарушений ритма.</p></trans-abstract><kwd-group xml:lang="en"><kwd>Kazan Medical archive</kwd></kwd-group><kwd-group xml:lang="ru"><kwd>Казанский медицинский архив</kwd></kwd-group><funding-group/></article-meta></front><body></body><back><ref-list><ref id="B1"><label>1.</label><mixed-citation>Акашева Д.У// Кардиология. — 1991. — № 9. — С. 76-80.</mixed-citation></ref><ref id="B2"><label>2.</label><mixed-citation>Мазур Н.А. Внезапная смерть больных ишемической болезнью сердца. — М., 1986.</mixed-citation></ref><ref id="B3"><label>3.</label><mixed-citation>Breithardt G., Borggrefe M.//Circulation. — 1987. — Vol. 75. — P. 1001-1006.</mixed-citation></ref><ref id="B4"><label>4.</label><mixed-citation>Gardner P.I., UrsellP.C., Fenoglio J. 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