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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">medvis</journal-id><journal-title-group><journal-title xml:lang="ru">Медицинская визуализация</journal-title><trans-title-group xml:lang="en"><trans-title>Medical Visualization</trans-title></trans-title-group></journal-title-group><issn pub-type="ppub">1607-0763</issn><issn pub-type="epub">2408-9516</issn><publisher><publisher-name>RDS-Media Ltd.</publisher-name></publisher></journal-meta><article-meta><article-id pub-id-type="doi">10.24835/1607-0763-1335</article-id><article-id custom-type="elpub" pub-id-type="custom">medvis-1335</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>СЕРДЦЕ И СОСУДЫ</subject></subj-group><subj-group subj-group-type="section-heading" xml:lang="en"><subject>HEART AND VESSELS</subject></subj-group></article-categories><title-group><article-title>Диагностические возможности эхокардиографических показателей времени ускорения и отношения времени ускорения к общему времени выброса левого желудочка в оценке тяжелого аортального стеноза у пациентов со сниженной фракцией выброса левого желудочка</article-title><trans-title-group xml:lang="en"><trans-title>Diagnostic capabilities of echocardiographic indicators of acceleration time and the ratio of acceleration time to total left ventricular ejection time in the assessment of severe aortic stenosis in patients with reduced left ventricular ejection fraction</trans-title></trans-title-group></title-group><contrib-group><contrib contrib-type="author" corresp="yes"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0001-6089-9722</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Базылев</surname><given-names>В. В.</given-names></name><name name-style="western" xml:lang="en"><surname>Bazylev</surname><given-names>V. V.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Базылев Владлен Владленович – доктор мед. наук, профессор, главный врач,</p><p>440071 Пенза, ул. Стасова, 6</p></bio><bio xml:lang="en"><p>Vladlen V. Bazylev – Doct. of Sci. (Med.), Chief doctor,</p><p>6, Stasova str., Penza 440071</p></bio><email xlink:type="simple">cardio-penza@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/0000-0002-7338-9462</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Бабуков</surname><given-names>Р. М.</given-names></name><name name-style="western" xml:lang="en"><surname>Babukov</surname><given-names>Ruslan Medarisovich</given-names></name></name-alternatives><bio xml:lang="ru"><p>Бабуков Руслан Медарисович – врач-кардиолог, врач ультразвуковой диагностики,</p><p>440071 Пенза, ул. Стасова, 6</p></bio><bio xml:lang="en"><p>Ruslan M. Babukov – doctor cardiologist, ultrasound diagnosis doctor,</p><p>6, Stasova str., Penza 440071</p></bio><email xlink:type="simple">ruslan.babukov@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/0000-0001-5482-3211</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Бартош</surname><given-names>Ф. Л.</given-names></name><name name-style="western" xml:lang="en"><surname>Bartosh</surname><given-names>Fedor Leonidovich</given-names></name></name-alternatives><bio xml:lang="ru"><p>Бартош Фёдор Леонидович – канд. мед. наук, заведующий отделением функциональной и ультразвуковой диагностики,</p><p>440071 Пенза, ул. Стасова, 6</p></bio><bio xml:lang="en"><p>Fedor L. Bartosh – Cand. of Sci. (Med.), Head of the department of the of functional and ultrasound diangistics,</p><p>6, Stasova str., Penza 440071</p></bio><email xlink:type="simple">fbartosh@km.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/0000-0002-3210-3974</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Лёвина</surname><given-names>А. В.</given-names></name><name name-style="western" xml:lang="en"><surname>Levina</surname><given-names>Alena Vitalevna</given-names></name></name-alternatives><bio xml:lang="ru"><p>Лёвина Алёна Витальевна – врач ультразвуковой диагностики,</p><p>440071 Пенза, ул. Стасова, 6</p></bio><bio xml:lang="en"><p>Alena V. Levina – ultrasound diagnosis doctor,</p><p>6, Stasova str., Penza 440071</p></bio><email xlink:type="simple">goralen1@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/0000-0002-9519-5036</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Микуляк</surname><given-names>А. И.</given-names></name><name name-style="western" xml:lang="en"><surname>Mikulyak</surname><given-names>Artur Ivanovich</given-names></name></name-alternatives><bio xml:lang="ru"><p>Микуляк Артур Иванович – канд. мед. наук, заведующий кардиохирургическим отделением №1, врач сердечно-сосудистый хирург,</p><p>440071 Пенза, ул. Стасова, 6</p></bio><bio xml:lang="en"><p>Artur I. Mikulyak – Cand. Sci. (Med.), Head of cardiovascular surgery department №1,</p><p>6, Stasova str., Penza 440071</p></bio><email xlink:type="simple">cardio-penza@yandex.ru</email><xref ref-type="aff" rid="aff-1"/></contrib></contrib-group><aff-alternatives id="aff-1"><aff xml:lang="ru"><institution>ФГБУ “Федеральный центр сердечно-сосудистой хирургии” Минздрава России</institution><country>Россия</country></aff><aff xml:lang="en"><institution>Federal Centre for Cardiovascular Surgery</institution><country>Russian Federation</country></aff></aff-alternatives><pub-date pub-type="collection"><year>2024</year></pub-date><pub-date pub-type="epub"><day>30</day><month>09</month><year>2023</year></pub-date><volume>28</volume><issue>2</issue><fpage>22</fpage><lpage>31</lpage><permissions><copyright-statement>Copyright &amp;#x00A9; Базылев В.В., Бабуков Р.М., Бартош Ф.Л., Лёвина А.В., Микуляк А.И., 2024</copyright-statement><copyright-year>2024</copyright-year><copyright-holder xml:lang="ru">Базылев В.В., Бабуков Р.М., Бартош Ф.Л., Лёвина А.В., Микуляк А.И.</copyright-holder><copyright-holder xml:lang="en">Bazylev V.V., Babukov R.M., Bartosh F.L., Levina A.V., Mikulyak A.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://medvis.rdsmedia.ru/jour/article/view/1335">https://medvis.rdsmedia.ru/jour/article/view/1335</self-uri><abstract><sec><title>Цель исследования</title><p>Цель исследования: 1) определить диагностические возможности эхокардиографических показателей AT и AT/ET в определении тяжелого аортального стеноза (АС) у пациентов с низким ударным объемом (УО) и низким трансаортальным градиентом давления со сниженной фракцией выброса левого желудочка (ФВ ЛЖ);</p><p>2) определить пороговые значения для показателей АТ и АТ/ЕТ в диагностике тяжелого АС у пациентов с низким УО и низким трансаортальным градиентом давления со сниженной ФВ ЛЖ.</p></sec><sec><title>Материал и методы</title><p>Материал и методы. Проспективно с 2017 по 2022 г. собрана база данных из 70 пациентов с тяжелым АС с низким УО и низким трансаортальным градиентом давления со сниженной ФВ ЛЖ. Критерии включения в исследование: изолированный АС с эхокардиографическими характеристиками, соответствующими тяжелому стенозу с низким УО и низким трансаортальным градиентом давления со сниженной ФВ ЛЖ. Пациенты с истинно тяжелым АС со сниженной ФВ ЛЖ были идентифицированы на основании стресс-эхокардиографии с добутамином и расчетом прогнозируемой площади эффективного отверстия аортального клапана (AVAРroj). Тяжелый стеноз определяли по значению AVAРroj˂ 1 см2.</p></sec><sec><title>Результаты</title><p>Результаты. Выявлена статистически значимая и высокая отрицательная корреляционная связь показателя AVAРroj с отношением АT/ET (r = 0,77, р &lt; 0,001), но слабая корреляционная связь с показателем АT (r = 0,41, р = 0,01). Кривая ROC-анализа продемонстрировала наибольшую прогностическую способность в дифференциальной диагностике тяжелого АС для отношения AT/ET (значение площади под кривой AUC 0,84 ± 0,54, р &lt; 0,001) и меньшую прогностическую способность для показателя АТ (значение под кривой АUC 0,63 ± 0,72, р &lt; 0,02). Оптимальное пороговое значение определения тяжелого АС для отношения AT/ET составило &gt;0,32 (чувствительность 92% и специфичность 70%), для показателя АТ &gt; 99 мс (чувствительность 81% и специфичность 88%). Анализ множественной логистической регрессии выявил, что отношение АТ/ЕТ является единственным эхокардиографическим параметром, оказывающим значимое влияние на дифференциальную диагностику тяжелого АС у пациентов со сниженной ФВ ЛЖ (OШ 1,5; 95% ДИ 1,2–1,9, р = 0,001). Выявлена низкая межисследовательская вариабельность в измерениях показателей AT (коэффициент внутриклассовой корреляции составил 0,93 (95% ДИ, 0,80–0,97)) и АT/ET (коэффициент внутриклассовой корреляции составил 0,88 (95% ДИ, 0,75–0,95)).</p></sec><sec><title>Выводы</title><p>Выводы.</p></sec></abstract><trans-abstract xml:lang="en"><sec><title>Objectives</title><p>Objectives: 1) to evaluate the diagnostic capabilities of AT and AT/ET in determining severe AS in patients with reduced LV EF and low stroke volume.</p><p>2) to determine the threshold values for AT and AT/ET in the diagnosis of severe AS in patients with low stroke volume and low transaortic gradient.</p></sec><sec><title>Materials and methods</title><p>Materials and methods. This is prospective single center study included 70 patients with low transaortic pressure gradient, reduced LV ejection fraction was and severe aortic stenosis. All patients have been examined from 2017 to 2022. Inclusion criteria for the study are: isolated AV stenosis with, reduced LV RF, low transaortic pressure gradient. Severity of AS was identified based on dobutamine stress echocardiography and aortic valve area (AVA). Severe stenosis was defined as AVA&lt; 1 cm2.</p></sec><sec><title>Result</title><p>Result. A statistically significant and high negative correlation was found between the AVA and AT/ET ratio, (r = 0.77, p &lt; 0.001) and weak correlation with the AT indicator (r = 0.41, p = 0.01). The RoC-analysis showed the greatest predictive ability in the differential diagnosis of severe AS for the ratio AT/ET (AUC = 0.84 ± 0.54, p &lt; 0.001) and the lower predictive ability for the indicator AT (AUC = 0.63 ± 0.72, p &lt; 0.02). The optimal threshold value for determining severe AS for the AT / ET &gt; 0.32 (sensitivity of 92%, specificity of 70%), for AT &gt; 99 (sensitivity of 81%, specificity of 88%). Multiple logistic regression analysis revealed that the AT/ET ratio is the only echocardiographic parameter that has a significant impact on the differential diagnosis of severe AS in patients with reduced LV EF (OR 1.5; 95% CI 1.2–1.9, p = 0.001). There was low interobserver variability in measurements of AT score (intraclass correlation coefficient was 0.93 [95% CI, 0.80-0.97] and AT/ET ratio (intraclass correlation coefficient was 0.88 [95% CI, 0.75–0.95]).</p></sec><sec><title>Conclusions</title><p>Conclusions.</p></sec></trans-abstract><kwd-group xml:lang="ru"><kwd>тяжелый аортальный стеноз</kwd><kwd>время ускорения</kwd><kwd>отношение AT/ET</kwd><kwd>AVAРroj</kwd></kwd-group><kwd-group xml:lang="en"><kwd>heavy acceleration time</kwd><kwd>AT/ET ratio</kwd><kwd>AVA</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">Рекомендации ESC/EACTS 2017 по лечению клапанной болезни сердца. Российский кардиологический журнал. 2018; 23 (7): 103–155. http://doi.org/10.15829/1560-4071-2018-7-103-155.</mixed-citation><mixed-citation xml:lang="en">ESC/EACTS 2017 guidelines for causing valvular heart disease. 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