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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">medalphabet</journal-id><journal-title-group><journal-title xml:lang="ru">Медицинский алфавит</journal-title><trans-title-group xml:lang="en"><trans-title>Medical alphabet</trans-title></trans-title-group></journal-title-group><issn pub-type="ppub">2078-5631</issn><issn pub-type="epub">2949-2807</issn><publisher><publisher-name>ООО «Альфмед»</publisher-name></publisher></journal-meta><article-meta><article-id custom-type="elpub" pub-id-type="custom">medalphabet-4740</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>Статьи</subject></subj-group></article-categories><title-group><article-title>Значение пространственного угла QRS-T вычислительной векторэлектрокардиограммы и его изменений на вдохе для диагностики легочной гипертензии у больных аортальным стенозом</article-title><trans-title-group xml:lang="en"><trans-title>The importance of the spatial QRS-T angle and its changes during inspiration for the diagnosis of pulmonary hypertension in patients with aortic stenosis</trans-title></trans-title-group></title-group><contrib-group><contrib contrib-type="author" corresp="yes"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0002-5543-7184</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Сахнова</surname><given-names>Т. А.</given-names></name><name name-style="western" xml:lang="en"><surname>Sakhnova</surname><given-names>T. A.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Сахнова Тамара Анатольевна – к.м.н., старший научный сотрудник Лаборатории ЭКГ</p><p>г. Москва</p></bio><bio xml:lang="en"><p>Sakhnova Tamara A. – Cand. of Sci. (Medicine), Senior Researcher, ECG Laboratory</p><p>Moscow</p></bio><email xlink:type="simple">tamara-sahnova@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/0000-0001-8725-7084</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Блинова</surname><given-names>Е. В.</given-names></name><name name-style="western" xml:lang="en"><surname>Blinova</surname><given-names>E. V.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Блинова Елена Валентиновна – к.м.н., научный сотрудник Лаборатории ЭКГ ФГБУ</p><p>г. Москва</p></bio><bio xml:lang="en"><p>Blinova Elena V. – Cand. of Sci. (Medicine), Research Officer, ECG Laboratory</p><p>Moscow</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/0000-0001-6908-7472</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Комлев</surname><given-names>А. Е.</given-names></name><name name-style="western" xml:lang="en"><surname>Komlev</surname><given-names>A. E.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Комлев Алексей Евгеньевич – врач-кардиолог Лаборатории гибридных методов лечения сердечно-сосудистых заболеваний</p><p>г. Москва</p></bio><bio xml:lang="en"><p>Komlev Alexey E. – cardiologist, Laboratory of hybrid methods of treatment of cardiovascular diseases</p><p>Moscow</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/0000-0002-3233-1862</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Саидова</surname><given-names>М. А.</given-names></name><name name-style="western" xml:lang="en"><surname>Saidova</surname><given-names>M. A.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Саидова Марина Абдулатиповна – д.м.н., профессор, главныйнаучный сотрудник Отдела ультразвуковых методов исследования</p><p>г. Москва</p></bio><bio xml:lang="en"><p>Saidova Marina A. – Dr. of Sci. (Med.), Chief Researcher, Department of Ultrasound Research Methods</p><p>Moscow</p></bio><xref ref-type="aff" rid="aff-1"/></contrib><contrib contrib-type="author" corresp="yes"><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Мартынюк</surname><given-names>Т. В.</given-names></name><name name-style="western" xml:lang="en"><surname>Martynyuk</surname><given-names>T. V.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Мартынюк Тамила Витальевна – д.м.н., руководитель Отдела легочной гипертензии и заболеваний сердца, профессор, кафедра кардиологии, факультет дополнительного профессионального образования</p><p>г. Москва</p></bio><bio xml:lang="en"><p>MartynyukT amila V. – Dr. of Sci. (Med.), Head of the Department of pulmonary hypertension and heart diseases; professor, Department of Cardiology, Faculty of Continuing Professional Education</p><p>Moscow</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/0000-0001-7374-3604</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Дроздов</surname><given-names>Д. В.</given-names></name><name name-style="western" xml:lang="en"><surname>Drozdov</surname><given-names>D. V.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Дроздов Дмитрий Владимирович – к.м.н., руководитель Лаборатории ЭКГ, ФГБУ </p><p>г. Москва</p></bio><bio xml:lang="en"><p>Drozdov Dmitry V. – Cand. of Sci. (Med.), Head of ECG Laboratory</p><p>Moscow</p></bio><xref ref-type="aff" rid="aff-1"/></contrib></contrib-group><aff-alternatives id="aff-1"><aff xml:lang="ru"><institution>ФГБУ «Национальный медицинский исследовательский центр кардиологии имени академика Е.И. Чазова» МЗ РФ</institution><country>Россия</country></aff><aff xml:lang="en"><institution>National Medical Research Center for Cardiology named after Academician E.I. Chazov of the Ministry of Health of the Russian Federation</institution><country>Russian Federation</country></aff></aff-alternatives><pub-date pub-type="collection"><year>2025</year></pub-date><pub-date pub-type="epub"><day>06</day><month>12</month><year>2025</year></pub-date><volume>0</volume><issue>31</issue><issue-title>Современная функциональная диагностика (4)</issue-title><fpage>7</fpage><lpage>13</lpage><permissions><copyright-statement>Copyright &amp;#x00A9; Сахнова Т.А., Блинова Е.В., Комлев А.Е., Саидова М.А., Мартынюк Т.В., Дроздов Д.В., 2025</copyright-statement><copyright-year>2025</copyright-year><copyright-holder xml:lang="ru">Сахнова Т.А., Блинова Е.В., Комлев А.Е., Саидова М.А., Мартынюк Т.В., Дроздов Д.В.</copyright-holder><copyright-holder xml:lang="en">Sakhnova T.A., Blinova E.V., Komlev A.E., Saidova M.A., Martynyuk T.V., Drozdov D.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.med-alphabet.com/jour/article/view/4740">https://www.med-alphabet.com/jour/article/view/4740</self-uri><abstract><sec><title>Введение</title><p>Введение. Легочная гипертензия (ЛГ) при аортальном стенозе (АС) отягощает прогноз. Векторкардиографические показателии функциональные пробымогут повысить информативностьэлектрокардиографии в выявлении ЛГ.</p><p>Цель работы – оценить возможности пространственного угла QRS-T (sQRS-Ta) и его изменений на вдохе для диагностики ЛГ у больных cАС. Материалы и методы. В исследование были включены 170 пациентов с тяжелым АС. Систолическое давление в легочной артерии (СДЛА) определялось при эхокардиографии; sQRS-Taрассчитывали как пространственный угол между интегральными векторами QRS и Т. Данные представлены как медиана [Q25; Q75].</p></sec><sec><title>Результаты</title><p>Результаты. У 138 (81%) пациентов СДЛА было 151°, чувствительность 44%, специфичность 78%), так и разница sQRS-Ta на вдохе и в покое (пороговое значение≤ 2°, чувствительность 63%, специфичность 60%) позволяли разделить подгруппы с СДЛА≥45 мм рт. ст. sQRS-Ta на вдохе уменьшался (125° [95°; 150°] и 117° [86°; 142°], соответственно, p&lt;0,0001), при СДЛА≥45 мм рт. ст. не изменялся (146° [106°; 158°] и 141° [101°; 163°], соответственно, p=0,62). По данным ROC-анализа как sQRS-Ta в покое (пороговое значение &gt; 151°, чувствительность 44%, специфичность 78%), так и разница sQRS-Ta на вдохе и в покое (пороговое значение≤ 2°, чувствительность 63%, специфичность 60%) позволяли разделить подгруппы с СДЛА≥45 мм рт. ст. и &lt;45 мм рт. ст.</p></sec><sec><title>Выводы</title><p>Выводы. У больных с тяжелым АСпри СДЛА &lt;45 мм рт. ст. sQRS-Taна вдохе уменьшался, а при СДЛА≥45 мм рт.ст. не изменялся. Как sQRS-Ta в покое, так и разница sQRS-Ta на вдохе и в покое позволяли разделить подгруппы с СДЛА≥45 мм рт. ст. и &lt;45 мм рт. ст.</p></sec></abstract><trans-abstract xml:lang="en"><sec><title>Introduction</title><p>Introduction. Pulmonary hypertension (PH) in aortic stenosis (AS) worsens the prognosis. Vectorcardiographic parameters and functional tests can improve the informativeness of electrocardiography in detecting PH.</p><p>The aim of this study was to evaluate the potential of the spatial QRS-T angle (sQRS-Ta) and its changes during inspiration for diagnosing PH in patients with AS.</p></sec><sec><title>Materials and methods</title><p>Materials and methods. The study included 170 patients with severe AS. Systolic pulmonary artery pressure (SPAP) was determined by echocardiography; sQRS-Ta was calculated as the spatial angle between the integral QRS and T vectors. Data are presented as median [Q25; Q75].</p></sec><sec><title>Results</title><p>Results. SPAP was &lt;45 mmHg in 138 (81%) patients and ≥45 mmHg in 32(19%) patients. Resting sQRS-Ta values had weak correlations with aortic valve area (r=- 0.3; p&lt;0.0001), left atrium size (r=0.3; p&lt;0.0001), and left ventricular myocardial mass index (r=0.3; p&lt;0.0001). At SPAP&lt;45 mmHg, inspiratory sQRS-Ta decreased (125° [95°; 150°] and 117° [86°; 142°], respectively, p&lt;0.0001), while at SPAP≥45 mmHg it did not change (146° [106°; 158°] and 141° [101°; 163°], respectively, p=0.62). According to ROC analysis, both the resting sQRS-Ta (cutoff value &gt; 151°, sensitivity 44%, specificity 78%) and the difference between inspiratory and resting sQRS-Ta (cutoff value ≤ 2°, sensitivity 63%, specificity 60%) allowed us to separate subgroups with SPAP ≥45 mmHg and &lt;45 mmHg.</p></sec><sec><title>Conclusions</title><p>Conclusions. In patients with severe AS, inspiratory sQRS-Ta decreased with SPAP &lt;45 mmHg, while it remained unchanged with SPAP ≥45 mmHg. Both the resting sQRS-Ta and the difference between inspiratory and resting sQRS-Ta allowed us to separate subgroups with SPAP ≥45 mmHg and &lt;45 mmHg.</p></sec></trans-abstract><kwd-group xml:lang="ru"><kwd>электрокардиограмма</kwd><kwd>вычислительная векторкардиограмма</kwd><kwd>угол QRS-T</kwd><kwd>функциональные пробы</kwd><kwd>вдох</kwd><kwd>легочная гипертензия</kwd><kwd>аортальный стеноз</kwd></kwd-group><kwd-group xml:lang="en"><kwd>electrocardiogram</kwd><kwd>computational vectorcardiogram</kwd><kwd>QRS-T angle</kwd><kwd>functional tests</kwd><kwd>inspiration</kwd><kwd>pulmonary hypertension</kwd><kwd>aortic stenosis</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">Boxhammer E, Berezin AE, Paar V, Bacher N, Topf A, Pavlov S, Hoppe UC, Lichtenauer M. 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