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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="other" dtd-version="1.2" xml:lang="en"><front><journal-meta><journal-id journal-id-type="publisher-id">Pediatric Hematology/Oncology and Immunopathology</journal-id><journal-title-group><journal-title xml:lang="en">Pediatric Hematology/Oncology and Immunopathology</journal-title><trans-title-group xml:lang="ru"><trans-title>Вопросы гематологии/онкологии и иммунопатологии в педиатрии</trans-title></trans-title-group></journal-title-group><issn publication-format="print">1726-1708</issn><issn publication-format="electronic">2414-9314</issn><publisher><publisher-name xml:lang="en">Fund Doctors, Innovations, Science for Children</publisher-name></publisher></journal-meta><article-meta><article-id pub-id-type="publisher-id">783</article-id><article-id pub-id-type="doi">10.24287/1726-1708-2024-23-3-130-137</article-id><article-categories><subj-group subj-group-type="toc-heading" xml:lang="en"><subject>ORIGINAL ARTICLES</subject></subj-group><subj-group subj-group-type="toc-heading" xml:lang="ru"><subject>ОРИГИНАЛЬНЫЕ СТАТЬИ</subject></subj-group><subj-group subj-group-type="article-type"><subject></subject></subj-group></article-categories><title-group><article-title xml:lang="en">Post-thrombotic syndrome in children with symptomatic deep vein thrombosis</article-title><trans-title-group xml:lang="ru"><trans-title>Посттромботический синдром у детей с симптоматическим тромбозом глубоких вен</trans-title></trans-title-group></title-group><contrib-group><contrib contrib-type="author"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0003-2719-1233</contrib-id><name-alternatives><name xml:lang="en"><surname>Yafoshkina</surname><given-names>T. Yu.</given-names></name><name xml:lang="ru"><surname>Яфошкина</surname><given-names>Т. Ю.</given-names></name></name-alternatives><address><country country="RU">Russian Federation</country></address><bio xml:lang="en"><p>PhD student, hematologist at outpatient unit.</p><p>Moscow</p></bio><bio xml:lang="ru"><p>Яфошкина Татьяна Юрьевна - врач-гематолог консультативного отделения.</p><p>117997, Москва, ул. Саморы Машела, 1</p></bio><email>yafoshkina.tatyana@gmail.com</email><xref ref-type="aff" rid="aff1"/></contrib><contrib contrib-type="author"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0002-2410-1223</contrib-id><name-alternatives><name xml:lang="en"><surname>Levin</surname><given-names>P. A.</given-names></name><name xml:lang="ru"><surname>Левин</surname><given-names>П. А.</given-names></name></name-alternatives><address><country country="RU">Russian Federation</country></address><bio xml:lang="en"><p>Leading Researcher at the Information and Analytics Department.</p><p>Moscow</p></bio><bio xml:lang="ru"><p>Павел Александрович Левин - ведущий специалист информационно-аналитического отдела.</p><p>Москва</p></bio><email>pavel.levin@fccho-moscow.ru</email><xref ref-type="aff" rid="aff1"/></contrib><contrib contrib-type="author"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0003-4384-6754</contrib-id><name-alternatives><name xml:lang="en"><surname>Zharkov</surname><given-names>P. A.</given-names></name><name xml:lang="ru"><surname>Жарков</surname><given-names>П. А.</given-names></name></name-alternatives><address><country country="RU">Russian Federation</country></address><bio xml:lang="en"><p>PhD, hematologist at outpatient unit, the head of Hemostasis Pathology Unit.</p><p>Moscow</p></bio><bio xml:lang="ru"><p>Павел Александрович Жарков - д.м.н., врач-педиатр, врач-гематолог консультативного отделения, заведующий отделом патологии гемостаза.</p><p>Москва</p></bio><email>pzharkoff@gmail.com</email><xref ref-type="aff" rid="aff1"/></contrib></contrib-group><aff-alternatives id="aff1"><aff><institution xml:lang="en">The Dmitry Rogachev National Medical Research Center of Pediatric Hematology, Oncology and Immunology of Ministry of Healthcare of the Russian Federation</institution></aff><aff><institution xml:lang="ru">ФГБУ «Национальный медицинский исследовательский центр детской гематологии, онкологии и иммунологии им. Дмитрия Рогачева» Минздрава России</institution></aff></aff-alternatives><pub-date date-type="pub" iso-8601-date="2024-09-08" publication-format="electronic"><day>08</day><month>09</month><year>2024</year></pub-date><volume>23</volume><issue>3</issue><issue-title xml:lang="en"/><issue-title xml:lang="ru"/><fpage>130</fpage><lpage>137</lpage><history><date date-type="received" iso-8601-date="2023-12-05"><day>05</day><month>12</month><year>2023</year></date><date date-type="accepted" iso-8601-date="2024-01-11"><day>11</day><month>01</month><year>2024</year></date></history><permissions><copyright-statement xml:lang="en">Copyright ©; 2025, «D. Rogachev NMRCPHOI»</copyright-statement><copyright-statement xml:lang="ru">Copyright ©; 2025, ФГБУ «НМИЦ ДГОИ им. Дмитрия Рогачева» Минздрава России</copyright-statement><copyright-year>2025</copyright-year><copyright-holder xml:lang="en">«D. Rogachev NMRCPHOI»</copyright-holder><copyright-holder xml:lang="ru">ФГБУ «НМИЦ ДГОИ им. Дмитрия Рогачева» Минздрава России</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://hemoncim.com/jour/article/view/783">https://hemoncim.com/jour/article/view/783</self-uri><abstract xml:lang="en"><p>Deep vein thrombosis (DVT) is an increasingly common diagnosis in pediatric inpatients. Approximately 85% of DVTs of extremities are associated with the use of a central venous catheter (CVC). CVC-related thrombosis and non-CVC-related thrombosis differ in their pathophysiology and patient characteristics. We thought it worthwhile to try and analyze whether there was an association between these parameters and further development of complications, namely, post-thrombotic syndrome (PTS). Thus, we aimed to evaluate differences in patient characteristics as well as in the frequency and severity of PTS in children with symptomatic CVC-related and non-CVC-related thrombosis. The study was approved by the Independent Ethics Committee and the Scientific Council of the Dmitry Rogachev National Medical Research Center of Pediatric Hematology, Oncology and Immunology of Ministry of Healthcare of the Russian Federation. We retrospectively analyzed medical records of patients aged 0 to 18 years (at the time of thrombosis) who had undergone treatment at the Center between 2013 and 2023 and selected patients with verified symptomatic DVT of the upper or lower extremity. The patients were divided into 2 groups: patients with CVC-related thrombosis (group 1) and patients with non-CVC-related thrombosis (group 2). Then we analyzed data on PTS in these patients collected during consultations with a hematologist at the Center or via a phone interview. PTS was evaluated using the Russian versions of the Manco–Johnson Instrument (MJI), the Modified Villalta Scale (MVS) and the Clinical Assessment of PTS (CAPTSure) (see the supplementary materials). The statistical significance of differences between the groups was assessed using Chi-square test or, if the expected values in a table were less than 5, using Fisher’s exact test. The study included 47 patients with symptomatic DVT: 17 patients with CVC-related DVT and 30 patients with non-CVCrelated DVT. The patients with CVC-related DVT were found to be younger at the time of thrombosis (median age: 4.1 years (range: 0–17 years) in group 1 versus 15.5 years (range: 3–17 years) in group 2; р &lt; 0.001) and were followed up for longer periods of time (median follow-up time: 5 years (range: 0.5–15 years) in group 1 versus 1 year (range: 0.5–7.5 years) in group 2; р = 0.001). Recanalization at 3 months after DVT was better in the patients with non-CVC-related DVT (50% of the patients in group 1 versus 93% of the patients in group 2; р = 0.002). The overall frequency of PTS was 87% in accordance with MVS/ MJI and 68% as per CAPTSure. The frequency of PTS in the groups was comparable: there were 13 (76%) patients with PTS in the CVC-related thrombosis group and 28 (93%) patients in the non-CVC-related thrombosis group; р = 0.2). The patients with non-CVC-related DVT were found to have more severe PTS more often: 44% of the patients with moderate PTS in the non-CVCrelated DVT group versus 23% of the patients with moderate PTS and CVC-related DVT; р = 0.2. However, these differences did not turn out to be statistically significant. Thus, there were no statistically significant differences in either the frequency or severity of PTS between the two groups. In this study, the overall frequency of PTS in the patients with symptomatic DVT was rather high but the majority of the children in both groups had mild PTS. Still, since PTS is a late complication, it is important to continue patient follow-up to monitor symptoms and severity of chronic venous insufficiency over time.</p></abstract><trans-abstract xml:lang="ru"><p>Количество тромбозов глубоких вен (ТГВ) у госпитализированных детей постоянно увеличивается. Приблизительно 85% случаев ТГВ конечностей развивается в результате использования центральных венозных катетеров (ЦВК). ЦВК-ассоциированный тромбоз отличается от неЦВК-ассоциированного особенностями патогенеза, а также характеристиками пациентов. Интересным, на наш взгляд, было бы оценить, могут ли эти особенности повлиять на наличие осложнений, а именно – на развитие посттромботического синдрома (ПТС), в дальнейшей перспективе. Цель исследования: выявить отличия в характеристиках пациентов, а также в частоте и тяжести ПТС у детей с симптоматическим ЦВК-ассоциированным (ЦВКТГВ) и неЦВК-ассоциированным (неЦВК-ТГВ) ТГВ. Исследование одобрено независимым этическим комитетом и утверждено решением ученого совета НМИЦ ДГОИ им. Дмитрия Рогачева. Исследование было ретроспективным. Из базы данных НМИЦ ДГОИ им. Дмитрия Рогачева за период с 2013 по 2023 г. были отобраны пациенты с объективно подтвержденным симптоматическим ТГВ верхней или нижней конечности в возрасте от рождения до 18 лет (на момент появления тромбоза). Пациенты были разделены на 2 группы: ЦВК-ТГВ (группа 1) и неЦВК-ТГВ (группа 2). Далее были проанализированы данные о наличии и выраженности ПТС у этих пациентов, полученные в ходе плановых визитов к гематологу в НМИЦ ДГОИ им. Дмитрия Рогачева или с помощью интервью по телефону. Для диагностики ПТС использовались русифицированные варианты опросников Manco–Johnson Instrument (MJI), Modified Villalta Scale (MVS), the Clinical Assessment of Post-Thrombotic Syndrome (CAPTSure). Наличие статистически значимой ассоциации между 2 группами проверялось при помощи анализа таблиц сопряженности критерием Хи-квадрат или, если в таблице было число меньше 5, точным тестом Фишера. В исследование были включены 47 пациентов с симптоматическим ТГВ, из них 17 с ЦВК-ТГВ и 30 с неЦВК-ТГВ. Выявлено, что пациенты с ЦВК-ТГВ были моложе на момент первого эпизода тромбоза (медиана возраста 4,1 года (разброс 0–17 лет) против 15,5 лет (разброс 3–17 лет); р &lt; 0,001); период наблюдения за ними был дольше (медиана 5 лет (разброс 0,5–15 лет) против 1 года (разброс 0,5–7,5 лет); р = 0,001); реканализация через 3 мес от момента появления ТГВ была хуже (50% пациентов против 93% пациентов; р = 0,002). Общая частота ПТС в настоящем исследовании была 87% по шкалам MVS/MJI и 68% по шкале CAPTSure. Частота ПТС в обеих группах была сопоставима (13 (76%) пациентов в группе ЦВК-ТГВ против 28 (93%) пациентов в группе неЦВК-ТГВ; р = 0,2). Отмечалась тенденция, что у пациентов с неЦВК-ТГВ чаще встречался более тяжелый ПТС (23% пациентов со среднетяжелым ПТС в группе ЦВК-ТГВ против 44% пациентов в группе неЦВК-ТГВ; р = 0,2), однако различия оказались статистически незначимыми. Таким образом, между пациентами с ЦВК-ТГВ и неЦВК-ТГВ не было статистически значимых различий по частоте и тяжести ПТС. Общая частота ПТС у детей с симптоматическим ТГВ в настоящем исследовании была довольно высокой, но большинство пациентов в обеих группах имели легкую форму. Поскольку ПТС является отсроченным осложнением, важно продолжать отслеживать развитие симптомов и степень тяжести хронической венозной недостаточности в динамике.</p></trans-abstract><kwd-group xml:lang="en"><kwd>post-thrombotic syndrome</kwd><kwd>post-thrombotic syndrome in children</kwd><kwd>post-thrombotic syndrome after symptomatic thrombosis</kwd><kwd>deep vein thrombosis</kwd><kwd>complications of deep vein thrombosis</kwd><kwd>symptomatic thrombosis in children</kwd></kwd-group><kwd-group xml:lang="ru"><kwd>посттромботический синдром</kwd><kwd>посттромботический синдром у детей</kwd><kwd>посттромботический синдром после симптоматических тромбозов</kwd><kwd>тромбоз глубоких вен</kwd><kwd>осложнения тромбоза глубоких вен</kwd><kwd>симптоматический тромбоз у детей</kwd></kwd-group><funding-group><funding-statement xml:lang="en">No financial support required</funding-statement><funding-statement xml:lang="ru">Не указан</funding-statement></funding-group></article-meta></front><body></body><back><ref-list><ref id="B1"><label>1.</label><mixed-citation>O'Brien S.H., Stanek J.R., Witmer C.M., Raffini L. 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