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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="en"><front><journal-meta><journal-id journal-id-type="publisher-id">akusherstvo</journal-id><journal-title-group><journal-title xml:lang="en">Obstetrics, Gynecology and Reproduction</journal-title><trans-title-group xml:lang="ru"><trans-title>Акушерство, Гинекология и Репродукция</trans-title></trans-title-group></journal-title-group><issn pub-type="ppub">2313-7347</issn><issn pub-type="epub">2500-3194</issn><publisher><publisher-name>IRBIS LLC</publisher-name></publisher></journal-meta><article-meta><article-id pub-id-type="doi">10.17749/2313-7347/ob.gyn.rep.2025.624</article-id><article-id custom-type="elpub" pub-id-type="custom">akusherstvo-2432</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="en"><subject>FROM HISTORY</subject></subj-group><subj-group subj-group-type="section-heading" xml:lang="ru"><subject>ИЗ ИСТОРИИ</subject></subj-group></article-categories><title-group><article-title>Regarding the origin and oblivion of the N.N. Chukalov's method for extracting separated placenta</article-title><trans-title-group xml:lang="ru"><trans-title>О зарождении и забвении способа Н.Н. Чукалова о выделении отделившегося последа</trans-title></trans-title-group></title-group><contrib-group><contrib contrib-type="author" corresp="yes"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0002-8015-1452</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Козлов</surname><given-names>Л. А.</given-names></name><name name-style="western" xml:lang="en"><surname>Kozlov</surname><given-names>L. A.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Козлов Лев Александрович, д.м.н., проф.</p><p>420012 Казань, ул. Бутлерова, д. 49</p></bio><bio xml:lang="en"><p>Lev A. Kozlov, MD, Dr Sci Med, Prof.</p><p>49 Butlerova Str., Kazan 420012</p></bio><email xlink:type="simple">klev1930@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/0000-0001-6731-7502</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Чикмарева</surname><given-names>К. А.</given-names></name><name name-style="western" xml:lang="en"><surname>Chikmareva</surname><given-names>K. A.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Чикмарева Ксения Алексеевна</p><p>420012 Казань, ул. Бутлерова, д. 49</p></bio><bio xml:lang="en"><p>Ksenia A. Chikmareva, MD</p><p>49 Butlerova Str., Kazan 420012</p></bio><xref ref-type="aff" rid="aff-1"/></contrib></contrib-group><aff-alternatives id="aff-1"><aff xml:lang="ru"><institution>ФГБОУ ВО «Казанский государственный медицинский университет» Министерства здравоохранения Российской Федерации</institution><country>Россия</country></aff><aff xml:lang="en"><institution>Kazan State Medical University, 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>10</day><month>05</month><year>2025</year></pub-date><volume>19</volume><issue>2</issue><fpage>306</fpage><lpage>311</lpage><permissions><copyright-statement>Copyright &amp;#x00A9; Kozlov L.A., Chikmareva K.A., 2025</copyright-statement><copyright-year>2025</copyright-year><copyright-holder xml:lang="ru">Козлов Л.А., Чикмарева К.А.</copyright-holder><copyright-holder xml:lang="en">Kozlov L.A., Chikmareva K.A.</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.gynecology.su/jour/article/view/2432">https://www.gynecology.su/jour/article/view/2432</self-uri><abstract><p>Today, understanding physiology of the placental period during normal childbirth, its management, identifying a moment of placental separation and methods for extracting separated and freely-lying birth canal placenta have been well documented. Nevertheless, the history of obstetrics and gynecology keeps everyday work secrets. Here, we would like to uncover one of them to the AGR readers primarily aimed at describing the "unknown" along with the "well-known" moment and restore "historical justice".</p></abstract><trans-abstract xml:lang="ru"><p>Сегодня понимание физиологии последового периода нормальных родов, его ведение, определение момента отделения плаценты и способы выделения отделившегося и свободно лежащего в родовых путях последа хорошо известны. Тем не менее история акушерства и гинекологии хранит тайны рабочих будней. Об одной из них мы хотим рассказать читателям журнала. Цель авторов состоит в том, чтобы на фоне «хорошо известного» момента, показать «неизвестный» момент и восстановить «историческую справедливость».</p></trans-abstract><kwd-group xml:lang="ru"><kwd>послеродовый период</kwd><kwd>выделение последа</kwd><kwd>способ Чукалова</kwd></kwd-group><kwd-group xml:lang="en"><kwd>postpartum period</kwd><kwd>placenta separation</kwd><kwd>N.N. Chukalov's method</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">Чукалов Н.Н. К вопросу о ведении нормального последового периода. Казанский медицинский журнал. 1922;18(2):29–44. 10.17816/kazmj79791.</mixed-citation><mixed-citation xml:lang="en">Chukalov N.N. To the question of the management of the normal successive period. [K voprosu o vedenii normal'nogo posledovogo perioda]. Kazanskij medicinskij zhurnal. 1922;18(2):29–44. 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