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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">Annals of Clinical and Experimental Neurology</journal-id><journal-title-group><journal-title xml:lang="en">Annals of Clinical and Experimental Neurology</journal-title><trans-title-group xml:lang="ru"><trans-title>Анналы клинической и экспериментальной неврологии</trans-title></trans-title-group></journal-title-group><issn publication-format="print">2075-5473</issn><issn publication-format="electronic">2409-2533</issn><publisher><publisher-name xml:lang="en">Eco-Vector</publisher-name></publisher></journal-meta><article-meta><article-id pub-id-type="publisher-id">1084</article-id><article-id pub-id-type="doi">10.17816/ACEN.1084</article-id><article-categories><subj-group subj-group-type="toc-heading" xml:lang="en"><subject>Clinical analysis</subject></subj-group><subj-group subj-group-type="toc-heading" xml:lang="ru"><subject>Клинический разбор</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">Postoperative hemorrhages in vestibular schwannoma surgery pontine hemorrhage. Clinical case report</article-title><trans-title-group xml:lang="ru"><trans-title>Послеоперационные кровоизлияния в хирургии вестибулярных шванном. Клинический случай кровоизлияния в мост</trans-title></trans-title-group></title-group><contrib-group><contrib contrib-type="author"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0001-9390-3134</contrib-id><name-alternatives><name xml:lang="en"><surname>Rudenko</surname><given-names>Pavel G.</given-names></name><name xml:lang="ru"><surname>Руденко</surname><given-names>Павел Геннадьевич</given-names></name></name-alternatives><address><country country="RU">Russian Federation</country></address><bio xml:lang="en"><p>Cand. Sci. (Med.), Associate Professor, Department of traumatology, orthopedics, neurosurgery with a course of postgraduate education, Professor V.F. Voyno-Yasenetsky Krasnoyarsk State Medical University; neurosurgeon, Department of neurosurgery No. 1, Regional Clinical Hospital</p></bio><bio xml:lang="ru"><p>к.м.н., доцент каф. травматологии, ортопедии и нейрохирургии с курсом последипломного образования Красноярского государственного медицинского университета им. проф. В.Ф. Войно-Ясенецкого; нейрохирург, отделение нейрохирургии № 1 Краевой клинической больницы</p></bio><email>rpg30@rambler.ru</email><xref ref-type="aff" rid="aff1"/><xref ref-type="aff" rid="aff2"/></contrib><contrib contrib-type="author"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0001-6321-4557</contrib-id><contrib-id contrib-id-type="researcherid">AAI-8384-2020</contrib-id><name-alternatives><name xml:lang="en"><surname>Shnyakin</surname><given-names>Pavel G.</given-names></name><name xml:lang="ru"><surname>Шнякин</surname><given-names>Павел Геннадьевич</given-names></name></name-alternatives><address><country country="RU">Russian Federation</country></address><bio xml:lang="en"><p>D. Sci. (Med.), Head, Department of traumatology, orthopedics and neurosurgery with a course of postgraduate education, Professor V.F. Voyno-Yasenetsky Krasnoyarsk State Medical University; Head, Regional Vascular Center, Regional Clinical Hospital</p></bio><bio xml:lang="ru"><p>д.м.н., зав. каф. травматологии, ортопедии и нейрохирургии с курсом последипломного образования Красноярского государственного медицинского университета им. проф. В.Ф. Войно-Ясенецкого; руководитель регионального сосудистого центра Краевой клинической больницы</p></bio><email>shnyakinpavel@mail.ru</email><xref ref-type="aff" rid="aff1"/><xref ref-type="aff" rid="aff2"/></contrib><contrib contrib-type="author"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0002-3275-614X</contrib-id><name-alternatives><name xml:lang="en"><surname>Milyokhina</surname><given-names>Ilona E.</given-names></name><name xml:lang="ru"><surname>Милехина</surname><given-names>Илона Евгеньевна</given-names></name></name-alternatives><address><country country="RU">Russian Federation</country></address><bio xml:lang="en"><p>Cand. Sci. (Med.), Associate Professor, Department of traumatology, orthopedics, neurosurgery with a course of postgraduate education, Professor V.F. Voyno-Yasenetsky Krasnoyarsk State Medical University</p></bio><bio xml:lang="ru"><p>к.м.н., доцент каф. травматологии, ортопедии и нейрохирургии с курсом последипломного образования Красноярского государственного медицинского университета им. проф. В.Ф. Войно-Ясенецкого</p></bio><email>eie-89@mail.ru</email><xref ref-type="aff" rid="aff1"/></contrib><contrib contrib-type="author"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0001-6813-8776</contrib-id><name-alternatives><name xml:lang="en"><surname>Usatova</surname><given-names>Irina S.</given-names></name><name xml:lang="ru"><surname>Усатова</surname><given-names>Ирина Сергеевна</given-names></name></name-alternatives><address><country country="RU">Russian Federation</country></address><bio xml:lang="en"><p>assistant of the Department of traumatology, orthopedics and neurosurgery with a course of postgraduate education, Professor V.F. Voyno-Yasenetsky Krasnoyarsk State Medical University</p></bio><bio xml:lang="ru"><p>ассистент каф. травматологии, ортопедии и нейрохирургии с курсом последипломного образования Красноярского государственного медицинского университета им. проф. В.Ф. Войно-Ясенецкого</p></bio><email>irinausatova01@mail.ru</email><xref ref-type="aff" rid="aff1"/><xref ref-type="aff" rid="aff2"/></contrib><contrib contrib-type="author"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0001-8738-6847</contrib-id><name-alternatives><name xml:lang="en"><surname>Fayzova</surname><given-names>Marvorid N.</given-names></name><name xml:lang="ru"><surname>Файзова</surname><given-names>Марворид Нусратуллоевна</given-names></name></name-alternatives><address><country country="RU">Russian Federation</country></address><bio xml:lang="en"><p>postgraduate student, Department of traumatology, orthopedics, neurosurgery and postgraduate course, Professor V.F. Voyno-Yasenetsky Krasnoyarsk State Medical University</p></bio><bio xml:lang="ru"><p>клинический ординатор каф. травматологии, ортопедии и нейрохирургии с курсом последипломного образования Красноярского государственного медицинского университета им. проф. В.Ф. Войно-Ясенецкого</p></bio><email>marvoridin00@gmail.com</email><xref ref-type="aff" rid="aff1"/></contrib></contrib-group><aff-alternatives id="aff1"><aff><institution xml:lang="en">Professor V.F. Voyno-Yasenetsky Krasnoyarsk State Medical University</institution></aff><aff><institution xml:lang="ru">Красноярский государственный медицинский университет имени профессора В.Ф. Войно-Ясенецкого</institution></aff></aff-alternatives><aff-alternatives id="aff2"><aff><institution xml:lang="en">Regional Clinical Hospital, Krasnoyarsk</institution></aff><aff><institution xml:lang="ru">Краевая клиническая больница, Красноярск</institution></aff></aff-alternatives><pub-date date-type="pub" iso-8601-date="2024-07-08" publication-format="electronic"><day>08</day><month>07</month><year>2024</year></pub-date><volume>18</volume><issue>2</issue><issue-title xml:lang="en"/><issue-title xml:lang="ru"/><fpage>100</fpage><lpage>109</lpage><history><date date-type="received" iso-8601-date="2024-01-29"><day>29</day><month>01</month><year>2024</year></date><date date-type="accepted" iso-8601-date="2024-04-15"><day>15</day><month>04</month><year>2024</year></date></history><permissions><copyright-statement xml:lang="en">Copyright ©; 2024, Rudenko P.G., Shnyakin P.G., Milyokhina I.E., Usatova I.S., Fayzova M.N.</copyright-statement><copyright-statement xml:lang="ru">Copyright ©; 2024, Руденко П.Г., Шнякин П.Г., Милехина И.Е., Усатова И.С., Файзова М.Н.</copyright-statement><copyright-year>2024</copyright-year><copyright-holder xml:lang="en">Rudenko P.G., Shnyakin P.G., Milyokhina I.E., Usatova I.S., Fayzova M.N.</copyright-holder><copyright-holder xml:lang="ru">Руденко П.Г., Шнякин П.Г., Милехина И.Е., Усатова И.С., Файзова М.Н.</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/">https://creativecommons.org/licenses/by/4.0</ali:license_ref></license></permissions><self-uri xlink:href="https://annaly-nevrologii.com/pathID/article/view/1084">https://annaly-nevrologii.com/pathID/article/view/1084</self-uri><abstract xml:lang="en"><p>Vestibular schwannoma (acoustic neuroma) is a benign tumor that develops from Schwann cells and can be life-threatening. Nowadays, surgical treatment is the method of choice in the management of patients with this type of tumor.</p> <p>We present a clinical case report of 71 y.o. patient with vestibular schwannoma (Koos grade IV, Samii grade 4B) with severe compression of the pons and the left cerebellar hemisphere. Microsurgical removal of the tumor was performed via the retrosigmoid approach. Starting from postoperative day 1, signs of respiratory distress developed. Control multislice spiral computed tomography (MSCT) of the brain revealed the area of hemorrhage in the left regions of the pons. On postoperative day 24 the patient's condition rapidly worsened progressing to coma with pronounced arterial hypotonia and cardiac arrest.</p> <p>Hemorrhage in the brain stem structures is a rare and life-threatening postoperative complication in vestibular schwannoma surgery. The incidence of postoperative hemorrhage is 2–11% of cases. Vascular complications are the leading cause of mortality. The key predisposing factors are older age, large and giant size of the tumor, tumor invasion into the pia mater of the brainstem, and vascularization of the tumor stroma. Comprehensive assessment of the tumor blood supply status, the state of the brainstem, intra- and postoperative clinical and neurophysiological monitoring, careful and thorough dissection of the tumor capsule and strict control of blood pressure in the postoperative period are the basis for the prevention of these complications.</p></abstract><trans-abstract xml:lang="ru"><p>Вестибулярная шваннома — это доброкачественная опухоль, растущая из шванновских клеток и представляющая реальную угрозу для жизни пациента. В настоящее время хирургическое лечение является методом выбора в лечении пациентов с этими новообразованиями.</p> <p>Представлен клинический случай пациента 71 года с вестибулярной шванномой (Koos 4, Samii 4В) с грубой компрессией моста и левого полушария мозжечка. Выполнено микрохирургическое удаление опухоли ретросигмовидным доступом. С первых суток послеоперационного периода у пациента отмечались дыхательные нарушения. По данным контрольной мультиспиральной компьютерной томографии головного мозга визуализирован участок кровоизлияния в левых отделах моста. На 24-е сутки после операции состоя-ние пациента резко ухудшилось с нарушениями уровня бодрствования до комы, появлением выраженной артериальной гипотонии и остановкой сердечной деятельности.</p> <p>Кровоизлияния в стволовые структуры являются редким и грозным осложнением в хирургии вестибулярных шванном. Частота геморрагических осложнений в послеоперационном периоде составляет 2–11% случаев. Именно сосудистые осложнения являются основными причинами летальных исходов. Ключевые предрасполагающие факторы: пожилой возраст, большие и гигантские размеры новообразования, прорастание опухолью пиальной оболочки стволовых структур и вовлечение сосудов в её строму. Всесторонняя оценка кровоснабжения опухоли и состояния стволовых структур, интра- и послеоперационный клинический и нейрофизиогический мониторинг, бережная и тщательная диссекция капсулы опухоли и максимальный контроль артериального давления в послеоперационном периоде являются основой профилактики этих осложнений.</p></trans-abstract><kwd-group xml:lang="en"><kwd>vestibular schwannoma</kwd><kwd>postoperative hemorrhage</kwd><kwd>posterior cranial fossa</kwd></kwd-group><kwd-group xml:lang="ru"><kwd>вестибулярные шванномы</kwd><kwd>послеоперационные кровоизлияния</kwd><kwd>задняя черепная ямка</kwd></kwd-group><funding-group/></article-meta></front><body></body><back><ref-list><ref id="B1"><label>1.</label><mixed-citation>Шиманский В.Н., Таняшин С.В., Шевченко К.В., Одаманов Д.А. Хирургическое лечение неврином слухового нерва (вестибулярных шванном). Вопросы нейрохирургии им Н.Н. 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