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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">fcmedicine</journal-id><journal-title-group><journal-title xml:lang="ru">Фундаментальная и клиническая медицина</journal-title><trans-title-group xml:lang="en"><trans-title>Fundamental and Clinical Medicine</trans-title></trans-title-group></journal-title-group><issn pub-type="ppub">2500-0764</issn><issn pub-type="epub">2542-0941</issn><publisher><publisher-name>КемГМУ</publisher-name></publisher></journal-meta><article-meta><article-id pub-id-type="doi">10.23946/2500-0764-2025-10-3-47-60</article-id><article-id custom-type="elpub" pub-id-type="custom">fcmedicine-1064</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>АКУШЕРСТВО И ГИНЕКОЛОГИЯ</subject></subj-group><subj-group subj-group-type="section-heading" xml:lang="en"><subject>OBSTETRICS AND GYNECOLOGY</subject></subj-group></article-categories><title-group><article-title>Оценка эффективности анализа сердечного ритма плода с помощью фонокардиографии с новыми математическими методами обработки аудиограмм</article-title><trans-title-group xml:lang="en"><trans-title>Evaluation of the effectiveness of fetal heart rate analysis using phonocardiography with novel mathematical methods of audiogram processing</trans-title></trans-title-group></title-group><contrib-group><contrib contrib-type="author" corresp="yes"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0003-2881-6135</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Репина</surname><given-names>Е. С.</given-names></name><name name-style="western" xml:lang="en"><surname>Repina</surname><given-names>E. S.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Репина Екатерина Сергеевна, ассистент кафедры акушерства и гинекологии </p><p>Московский тракт, д. 2, г. Томск, 634050 </p></bio><bio xml:lang="en"><p>Dr. Ekaterina S. Repina, MD, Assistant Professor, Department of Obstetrics and Gynecology </p><p>Moskovskiy Trakt, 2, Tomsk, 634050 </p></bio><email xlink:type="simple">repinaekaterina.ssmu@gmail.com</email><xref ref-type="aff" rid="aff-1"/></contrib><contrib contrib-type="author" corresp="yes"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0002-1343-5471</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Юрьев</surname><given-names>С. Ю.</given-names></name><name name-style="western" xml:lang="en"><surname>Yuriev</surname><given-names>S. Yu.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Юрьев Сергей Юрьевич, доктор медицинских наук, профессор кафедры акушерства и гинекологии;  директор </p><p>Московский тракт, д. 2, г. Томск, 634050 </p><p>ул. Сибирская, д. 9/1, г. Томск, 634029 </p></bio><bio xml:lang="en"><p>Prof. Sergey Yu. Yuriev, MD, Dr. Sci. (Medicine), Professor, Department of Obstetrics and Gynecology; Chief Executive Officer</p><p>Moskovskiy Trakt, 2, Tomsk, 634050 </p><p>Sibirskaya Street, 9/1, Tomsk, 634029 </p></bio><xref ref-type="aff" rid="aff-2"/></contrib><contrib contrib-type="author" corresp="yes"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0003-0775-350X</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Костелей</surname><given-names>Я. В.</given-names></name><name name-style="western" xml:lang="en"><surname>Kosteley</surname><given-names>Ya. V.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Костелей Яна Валерьевна, кандидат технических наук, доцент кафедры экономической математики, информатики и статистики; инженер-программист </p><p>пр. Ленина, д. 40, г. Томск, 634050 </p><p>пр. Фрунзе, 11б, г. Томск, 634029 </p></bio><bio xml:lang="en"><p>Dr. Yana V. Kosteley, Cand. Sci. (Engineering), Associate Professor, Department of Economic Mathematics, Computer Science and Statistics; Software Engineer </p><p>Lenina Avenue, 40, Tomsk, 634050 </p><p>Frunze Avenue, 11b, Tomsk, 634029 </p></bio><xref ref-type="aff" rid="aff-3"/></contrib><contrib contrib-type="author" corresp="yes"><contrib-id contrib-id-type="orcid">https://orcid.org/0009-0005-9576-666X</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Зимина</surname><given-names>Н. Д.</given-names></name><name name-style="western" xml:lang="en"><surname>Zimina</surname><given-names>N. D.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Зимина Наталья Даниловна, ассистент мультипрофильного аккредитационно-симуляционного центра </p><p>Московский тракт, д. 2, г. Томск, 634050 </p></bio><bio xml:lang="en"><p>Ms. Natalia D. Zimina, MD, Technical Assistant, the Multidisciplinary Accreditation and Simulation Center </p><p>Moskovskiy Trakt, 2, Tomsk, 634050 </p></bio><xref ref-type="aff" rid="aff-1"/></contrib></contrib-group><aff-alternatives id="aff-1"><aff xml:lang="ru"><institution>Сибирский государственный медицинский университет</institution><country>Россия</country></aff><aff xml:lang="en"><institution>Siberian State Medical University</institution><country>Russian Federation</country></aff></aff-alternatives><aff-alternatives id="aff-2"><aff xml:lang="ru"><institution>Сибирский государственный медицинский университет; Центр перинатального здоровья</institution><country>Россия</country></aff><aff xml:lang="en"><institution>Siberian State Medical University; Perinatal Health Center, LLC</institution><country>Russian Federation</country></aff></aff-alternatives><aff-alternatives id="aff-3"><aff xml:lang="ru"><institution>Томский государственный университет систем управления и радиоэлектроники; «Диагностика +»</institution><country>Россия</country></aff><aff xml:lang="en"><institution>Tomsk State University of Control Systems and Radioelectronics; Diagnostika +, LLC</institution><country>Russian Federation</country></aff></aff-alternatives><pub-date pub-type="collection"><year>2025</year></pub-date><pub-date pub-type="epub"><day>29</day><month>09</month><year>2025</year></pub-date><volume>10</volume><issue>3</issue><fpage>47</fpage><lpage>60</lpage><permissions><copyright-statement>Copyright &amp;#x00A9; Репина Е.С., Юрьев С.Ю., Костелей Я.В., Зимина Н.Д., 2025</copyright-statement><copyright-year>2025</copyright-year><copyright-holder xml:lang="ru">Репина Е.С., Юрьев С.Ю., Костелей Я.В., Зимина Н.Д.</copyright-holder><copyright-holder xml:lang="en">Repina E.S., Yuriev S.Y., Kosteley Y.V., Zimina N.D.</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://fcm.kemsmu.ru/jour/article/view/1064">https://fcm.kemsmu.ru/jour/article/view/1064</self-uri><abstract><p>Цель. Основной целью исследования было оценить чувствительность и специфичность метода диагностики гипоксии плода, основанного на фонокардиографии с помощью программно-аппаратного комплекса FetaCare. Материалы и методы. В исследование были включены 204 беременные женщины высокой степени перинатального риска. Все беременные были разделены в зависимости от срока беременности на 3 группы: 1-я группа – 26−31,6 нед., 2-я группа – 32−36,6 нед., 3-я группа – 37−41 нед. Всем беременным проводилась запись фонокардиограмм плодов, проведена математическая обработка аудиограмм и построены кардиоинтервалограммы (КИГ). Оценка состояния плода произведена на основе рассчитанных параметров КИГ: базальная ЧСС, амплитуда осцилляций, количество осцилляций, амплитуда акцелераций, количество акцелераций, LTV, STV. Результаты. Рассчитана чувствительность и специфичность метода на основе параметров STV и LTV. В зависимости от группы чувствительность варьировала от 40 % до 100 %, специфичность − от 95 % до 100 %. Заключение. С увеличением срока беременности точность диагностики возрастает. До 32 недель точность диагностики низкая, что требует использования дополнительных методов исследования состояния плода для принятия решения о необходимости родоразрешения. Данное исследование показывает, что информативность фонокардиография с новыми методами обработки аудиоданных может быть сопоставима с кардиотокографией, широко распространённой в клинической практике в настоящее время.</p></abstract><trans-abstract xml:lang="en"><p>Aim. To evaluate the sensitivity and specificity of a phonocardiography-based method for diagnosing fetal hypoxia using the FetaCare software and hardware complex. Materials and Methods. The study included 204 pregnant women with a high degree of perinatal risk who were stratified into three groups by gestational age: 1) 26–31.6 weeks; 2) 32–36.6 weeks; 3) 37–41 weeks. Phonocardiography records of the fetus were obtained for all participants, followed by mathematical audio data processing and construction of cardiointervalograms. Fetal condition was assessed based on cardiointervalogram-derived parameters: basal fetal heart rate, oscillation amplitude, number of oscillations, acceleration amplitude, number of accelerations, long-term variation, and short-term variation. Sensitivity and specificity of the method was calculated based on short-term variation and long-term variation. Results. Depending on the gestational age group, sensitivity ranged from 40 % to 100 %, while specificity ranged from 95% to 100 %. Conclusion. Diagnostic accuracy of a phonocardiography- and audiogram processing-based heart rate analysis increased with gestational age. Before 32 weeks, it accuracy remained low, requiring the use of additional fetal examination methods to make a decision on the need for delivery. This study demonstrates that the informativeness of phonocardiography with novel audio data processing methods can be comparable to cardiotocography, which is currently widely used in clinical practice.</p></trans-abstract><kwd-group xml:lang="ru"><kwd>фонокардиография</kwd><kwd>оценка внутриутробного состояния плода</kwd><kwd>внутриутробная гипоксия</kwd><kwd>кардиоинтервалограмма</kwd></kwd-group><kwd-group xml:lang="en"><kwd>phonocardiography</kwd><kwd>intrauterine fetal assessment</kwd><kwd>intrauterine hypoxia</kwd><kwd>cardiointervalogram</kwd></kwd-group><funding-group><funding-statement xml:lang="ru">Исследование выполнено за счет гранта Российского научного фонда № 24-64-00006, http://rscf.ru/project/24-64-00006/</funding-statement><funding-statement xml:lang="en">The research was granted by the Russian Science Foundation № 24-64-00006, http://rscf.ru/project/24-64-00006/</funding-statement></funding-group></article-meta></front><back><ref-list><title>References</title><ref id="cit1"><label>1</label><citation-alternatives><mixed-citation xml:lang="ru">Kapaya H., Jacques R., Rahaim N., Anumba D. «Does short-term variation in fetal heart rate predict fetal acidaemia?» A systematic review and metaanalysis J. 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