<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE article PUBLIC "-//NLM//DTD JATS (Z39.96) Journal Publishing DTD v1.3 20210610//EN" "JATS-journalpublishing1-3.dtd">
<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">cardiotomsk</journal-id><journal-title-group><journal-title xml:lang="ru">Сибирский журнал клинической и экспериментальной медицины</journal-title><trans-title-group xml:lang="en"><trans-title>Siberian Journal of Clinical and Experimental Medicine</trans-title></trans-title-group></journal-title-group><issn pub-type="ppub">2713-2927</issn><issn pub-type="epub">2713-265X</issn><publisher><publisher-name>TSU publishing</publisher-name></publisher></journal-meta><article-meta><article-id pub-id-type="doi">10.29001/2073-8552-2024-39-1-57-64</article-id><article-id custom-type="elpub" pub-id-type="custom">cardiotomsk-2184</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>КЛИНИЧЕСКИЕ ИССЛЕДОВАНИЯ</subject></subj-group><subj-group subj-group-type="section-heading" xml:lang="en"><subject>CLINICAL STUDIES</subject></subj-group></article-categories><title-group><article-title>Обоснование и дизайн проспективного рандомизированного исследования влияния карбоксимальтозата железа на качество жизни и клиническую картину сердечной недостаточности с сохраненной фракцией выброса у пациентов с дефицитом железа</article-title><trans-title-group xml:lang="en"><trans-title>Rationale and design of a prospective randomized study of the effect of ferric carboxymaltose therapy on quality of life and clinical picture of heart failure with preserved ejection fraction in patients with iron deficiency</trans-title></trans-title-group></title-group><contrib-group><contrib contrib-type="author" corresp="yes"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0002-7661-5808</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Тукиш</surname><given-names>О. В.</given-names></name><name name-style="western" xml:lang="en"><surname>Tukish</surname><given-names>O. V.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Тукиш Ольга Викторовна, канд. мед. наук, научный сотрудник, отделение патологии миокарда</p><p>634012, Томск, ул. Киевская, 111а</p></bio><bio xml:lang="en"><p>Olga V. Tukish, Cand. Sci. (Med.), Research Scientist, Department of Myocardial Pathology</p><p>111a, Kievskaya str., Tomsk, 634012</p></bio><email xlink:type="simple">olgatukish@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/0000-0002-9488-6900</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Гарганеева</surname><given-names>А. А.</given-names></name><name name-style="western" xml:lang="en"><surname>Garganeeva</surname><given-names>A. A.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Гарганеева Алла Анатольевна, д-р мед. наук, профессор, заведующий отделением патологии миокарда</p><p>634012, Томск, ул. Киевская, 111а</p></bio><bio xml:lang="en"><p>Alla A. Garganeeva, Dr. Sci. (Med.), Professor, Head of the Department of Myocardial Pathology</p><p>111a, Kievskaya str., Tomsk, 634012</p></bio><email xlink:type="simple">aag@cardio-tomsk.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/0000-0002-8070-2234</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Кужелева</surname><given-names>Е. А.</given-names></name><name name-style="western" xml:lang="en"><surname>Kuzheleva</surname><given-names>E. A.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Кужелева Елена Андреевна, канд. мед. наук, старший научный сотрудник, отделение патологии миокарда</p><p>634012, Томск, ул. Киевская, 111а</p></bio><bio xml:lang="en"><p>Elena A. Kuzheleva, Cand. Sci. (Med.), Research Scientist, Department of Myocardial Pathology</p><p>111a, Kievskaya str., Tomsk, 634012</p></bio><email xlink:type="simple">kea@cardio-tomsk.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/0000-0002-9886-0695</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Солдатенко</surname><given-names>М. В.</given-names></name><name name-style="western" xml:lang="en"><surname>Soldatenko</surname><given-names>M. V.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Солдатенко Михаил Владимирович, канд. мед. наук, научный сотрудник, отделение ультразвуковой и функциональной диагностики</p><p>634012, Томск, ул. Киевская, 111а</p></bio><bio xml:lang="en"><p>Mikhail V. Soldatenko, Cand. Sci. (Med.), Research Scientist, Department of Myocardial Pathology</p><p>111a, Kievskaya str., Tomsk, 634012</p></bio><email xlink:type="simple">able99@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/0000-0002-1747-9041</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Кондратьев</surname><given-names>М. Ю.</given-names></name><name name-style="western" xml:lang="en"><surname>Kondratiev</surname><given-names>M. Yu.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Кондратьев Михаил Юрьевич, младший научный сотрудник, от- деление патологии миокарда</p><p>634012, Томск, ул. Киевская, 111а</p></bio><bio xml:lang="en"><p>Mikhail Yu. Kondratiev, Research Scientist, Department of Myocardial Pathology</p><p>111a, Kievskaya str., Tomsk, 634012</p></bio><email xlink:type="simple">kmu@cardio-tomsk.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/0000-0002-2629-6466</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Витт</surname><given-names>К. Н.</given-names></name><name name-style="western" xml:lang="en"><surname>Vitt</surname><given-names>K. N.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Витт Карина Николаевна, младший научный сотрудник, отделение патологии миокарда</p><p>634012, Томск, ул. Киевская, 111а</p></bio><bio xml:lang="en"><p>Karina N. Vitt, Research Scientist, Department of Myocardial Pathology</p><p>111a, Kievskaya str., Tomsk, 634012</p></bio><email xlink:type="simple">karinavitt@list.ru</email><xref ref-type="aff" rid="aff-1"/></contrib></contrib-group><aff-alternatives id="aff-1"><aff xml:lang="ru">Научно-исследовательский институт (НИИ) кардиологии, Томский национальный исследовательский медицинский центр (НИМЦ) Российской академии наук<country>Россия</country></aff><aff xml:lang="en">Cardiology Research Institute, Tomsk National Research Medical Center (NRMC), Russian Academy of Sciences<country>Russian Federation</country></aff></aff-alternatives><pub-date pub-type="collection"><year>2024</year></pub-date><pub-date pub-type="epub"><day>04</day><month>04</month><year>2024</year></pub-date><volume>39</volume><issue>1</issue><fpage>57</fpage><lpage>64</lpage><permissions><copyright-statement>Copyright &amp;#x00A9; Тукиш О.В., Гарганеева А.А., Кужелева Е.А., Солдатенко М.В., Кондратьев М.Ю., Витт К.Н., 2024</copyright-statement><copyright-year>2024</copyright-year><copyright-holder xml:lang="ru">Тукиш О.В., Гарганеева А.А., Кужелева Е.А., Солдатенко М.В., Кондратьев М.Ю., Витт К.Н.</copyright-holder><copyright-holder xml:lang="en">Tukish O.V., Garganeeva A.A., Kuzheleva E.A., Soldatenko M.V., Kondratiev M.Y., Vitt K.N.</copyright-holder><license 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.sibjcem.ru/jour/article/view/2184">https://www.sibjcem.ru/jour/article/view/2184</self-uri><abstract><sec><title>Введение</title><p>Введение. Распространенность дефицита железа (ДЖ) среди пациентов с хронической сердечной недостаточностью (ХСН) составляет от 50 до 80%. Установлено, что ДЖ является значимым предиктором неблагоприятных исходов и смертности при ХСН, а также связан со снижением переносимости физической нагрузки. Использование пероральных препаратов железа с целью его коррекции ограничивается высокой частотой нежелательных явлений и в ряде случаев их неэффективностью при ХСН. Высоким потенциалом в коррекции ДЖ обладает карбоксимальтозат железа, хорошо зарекомендовавший себя в когорте больных ХСН с низкой фракцией выброса (ХСНнФВ), однако при ХСН с сохраненной фракцией выброса (ХСНсФВ) его эффективность точно не установлена.</p></sec><sec><title>Цель</title><p>Цель: оценить влияние терапии карбоксимальтозатом железа на показатели качества жизни, функциональный статус, клиническую картину ХСНсФВ у пациентов с диагностированным ДЖ.</p></sec><sec><title>Материал и методы</title><p>Материал и методы. Планируется проведение проспективного рандомизированного когортного исследования, включающего 70 взрослых пациентов с ХСНсФВ, II–III функциональный класс (ФК) по NYHA и диагностированным ДЖ: группа 1 (n = 35) – с медикаментозной терапией карбоксимальтозатом железа, группа 2 (n = 35) – без данной медикаментозной терапии. Также будет набрана контрольная группа пациентов без ДЖ (n = 30). Проспективная часть предполагает наблюдение пациентов с повторными визитами через 6, 12 мес., на которых будут оцениваться показатели качества жизни, функциональный статус, клиническая картина ХСН, структурно-функциональные эхокардиографические показатели левых и правых отделов сердца, наличие повторных госпитализаций по поводу ХСН и смерть от всех причин.</p></sec></abstract><trans-abstract xml:lang="en"><sec><title>Introduction</title><p>Introduction. The prevalence of iron deficiency (ID) among patients with chronic heart failure (CHF) ranges from 50% to 80%. It has been established that ID is a significant predictor of adverse outcomes and mortality in CHF, and is also associated with a decrease in exercise tolerance. The use of oral iron preparations for the purpose of its correction is limited by the high frequency of adverse events and, in some cases, their ineffectiveness in CHF. Ferric carboxymaltose has a high potential in the correction of ID, which has proven itself well in the cohort of patients with CHF, but its effectiveness has not been precisely established in CHF.</p></sec><sec><title>Aim</title><p>Aim: To evaluate the effect of ferric carboxymaltose therapy on the quality of life, functional status, and clinical picture of CHF in patients with diagnosed iron deficiency.</p></sec><sec><title>Material and Methods</title><p>Material and Methods. It is a prospective randomized cohort study. It is planned to include 70 adult patients with CHF (NYHA II-III) and diagnosed ID: group 1 (n = 35) – group of drug therapy with ferric carboxymaltose, group 2 (n = 35) – without drug therapy. A control group of patients without ID (n = 30) will also be recruited. The prospective part involves the observation of patients with repeated visits after 6, 12 months, during which the indicators of quality of life, functional status, clinical picture of CHF, structural and functional echocardiographic indicators of LV and right heart, as well as the presence of repeated hospitalizations for CHF and death from all causes will be evaluated.</p></sec></trans-abstract><kwd-group xml:lang="ru"><kwd>сердечная недостаточность</kwd><kwd>хроническая сердечная недостаточность с сохраненной фракцией выброса</kwd><kwd>дефицит железа</kwd><kwd>карбоксимальтозат железа</kwd><kwd>качество жизни</kwd></kwd-group><kwd-group xml:lang="en"><kwd>heart failure</kwd><kwd>CHF</kwd><kwd>iron deficiency</kwd><kwd>ferric carboxymaltose</kwd><kwd>quality of life</kwd></kwd-group><funding-group xml:lang="ru"><funding-statement>Работа будет проводиться в рамках выполнения государственного задания по поисковым научным исследованиям № 123051590130-9</funding-statement></funding-group><funding-group xml:lang="en"><funding-statement>The work will be carried out within the framework of the state task on exploratory scientific research № 123051590130-9</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">Мареев В.Ю., Беграмбекова Ю.Л., Мареев Ю.В., Кобалава Ж.Д., Карапетян Л.В., Галочкин С.А. и др. Распространенность дефицита железа у пациентов с хронической сердечной недостаточностью в Российской Федерации. Данные наблюдательного одномоментного исследования. Кардиология. 2022;62(5):4–8. DOI: 10.18087/cardio.2022.5.n2083.</mixed-citation><mixed-citation xml:lang="en">Mareev V.Yu., Begrambekova Yu.L., Mareev Yu.V., Kobalava Z.D., Karapetyan L.V., Galochkin S.A. et al. Iron deficiency in Russia heart failure patients. Observational cross-sectional multicenter study. Kardiologiia. 2022;62(5):4–8. (In Russ.). DOI: 10.18087/cardio.2022.5.n2083.</mixed-citation></citation-alternatives></ref><ref id="cit2"><label>2</label><citation-alternatives><mixed-citation xml:lang="ru">World Health Organization. Nutritional anaemias: tools for effective prevention and control. Geneva: World Health Organization. 2017:83. URL: https://www.who.int/publications/i/item/9789241513067 (13.10.2023).</mixed-citation><mixed-citation xml:lang="en">World Health Organization. Nutritional anaemias: tools for effective prevention and control. Geneva: World Health Organization. 2017:83. URL: https://www.who.int/publications/i/item/9789241513067 (13.10.2023).</mixed-citation></citation-alternatives></ref><ref id="cit3"><label>3</label><citation-alternatives><mixed-citation xml:lang="ru">Ambrosy A.P., Fonarow G.C., Butler J., Chioncel O., Greene S.J., Vaduganathan M. et al. The global health and economic burden of hospitalizations for heart failure: lessons learned from hospitalized heart failure registries. J. Am. Coll. Cardiol. 2014;63(12):1123–1133. DOI: 10.1016/j.jacc.2013.11.053.</mixed-citation><mixed-citation xml:lang="en">Ambrosy A.P., Fonarow G.C., Butler J., Chioncel O., Greene S.J., Vaduganathan M. et al. The global health and economic burden of hospitalizations for heart failure: lessons learned from hospitalized heart failure registries. J. Am. Coll. Cardiol. 2014;63(12):1123–1133. DOI: 10.1016/j.jacc.2013.11.053.</mixed-citation></citation-alternatives></ref><ref id="cit4"><label>4</label><citation-alternatives><mixed-citation xml:lang="ru">Fukuta H., Hagiwara H., Kamiya T. Iron therapy in iron-deficiency patients with heart failure with preserved ejection fraction: A protocol for meta-analysis. Medicine (Baltimore). 2021;100(32):e26919. DOI: 10.1097/MD.0000000000026919.</mixed-citation><mixed-citation xml:lang="en">Fukuta H., Hagiwara H., Kamiya T. Iron therapy in iron-deficiency patients with heart failure with preserved ejection fraction: A protocol for meta-analysis. Medicine (Baltimore). 2021;100(32):e26919. DOI: 10.1097/MD.0000000000026919.</mixed-citation></citation-alternatives></ref><ref id="cit5"><label>5</label><citation-alternatives><mixed-citation xml:lang="ru">Жиров И.В., Сафронова Н.В., Терещенко С.Н. Коррекция дефицита железа у пациентов после острой декомпенсации: новая цель в лечении сердечной недостаточности. Российский кардиологический журнал. 2022;27(2S):4949. DOI: 10.15829/1560-4071-2022-4949.</mixed-citation><mixed-citation xml:lang="en">Zhirov I.V., Safronova N.V., Tereshchenko S.N. Treatment of iron deficiency in patients after acute decompensation: a new target in the treatment of heart failure. Russian Journal of Cardiology. 2022;27(2S):4949. (In Russ.). DOI: 10.15829/1560-4071-2022-4949.</mixed-citation></citation-alternatives></ref><ref id="cit6"><label>6</label><citation-alternatives><mixed-citation xml:lang="ru">Klip I.T., Comin-Colet J., Voors A.A., Ponikowski P., Enjuanes C., Banasiak W. Iron deficiency in chronic heart failure: an international pooled analysis. Am. Heart J. 2013;165(4):575-82.e3. DOI: 10.1016/j.ahj.2013.01.017.</mixed-citation><mixed-citation xml:lang="en">Klip I.T., Comin-Colet J., Voors A.A., Ponikowski P., Enjuanes C., Banasiak W. Iron deficiency in chronic heart failure: an international pooled analysis. Am. Heart J. 2013;165(4):575-82.e3. DOI: 10.1016/j.ahj.2013.01.017.</mixed-citation></citation-alternatives></ref><ref id="cit7"><label>7</label><citation-alternatives><mixed-citation xml:lang="ru">Lewis G.D., Malhotra R., Hernandez A.F., McNulty S.E., Smith A., Felker G.M. et al. Effect of oral iron repletion on exercise capacity in patients with heart failure with reduced ejection fraction and iron deficiency: the IRONOUT HF randomized clinical trial. JAMA. 2017;317(19):1958–1966. DOI: 10.1001/jama.2017.5427.</mixed-citation><mixed-citation xml:lang="en">Lewis G.D., Malhotra R., Hernandez A.F., McNulty S.E., Smith A., Felker G.M. et al. Effect of oral iron repletion on exercise capacity in patients with heart failure with reduced ejection fraction and iron deficiency: the IRONOUT HF randomized clinical trial. JAMA. 2017;317(19):1958–1966. DOI: 10.1001/jama.2017.5427.</mixed-citation></citation-alternatives></ref><ref id="cit8"><label>8</label><citation-alternatives><mixed-citation xml:lang="ru">Anand I.S., Gupta P. Anemia and iron deficiency in heart failure: Current concepts and emerging therapies. Circulation. 2018;138(1):80–98. DOI: 10.1161/CIRCULATIONAHA.118.030099.</mixed-citation><mixed-citation xml:lang="en">Anand I.S., Gupta P. Anemia and iron deficiency in heart failure: Current concepts and emerging therapies. Circulation. 2018;138(1):80–98. DOI: 10.1161/CIRCULATIONAHA.118.030099.</mixed-citation></citation-alternatives></ref><ref id="cit9"><label>9</label><citation-alternatives><mixed-citation xml:lang="ru">McDonagh T., Macdougall I.C. Iron therapy for the treatment of iron deficiency in chronic heart failure: intravenous or oral? Eur. J. Heart Fail. 2015;17(3):248–262. DOI: 10.1002/ejhf.236.</mixed-citation><mixed-citation xml:lang="en">McDonagh T., Macdougall I.C. Iron therapy for the treatment of iron deficiency in chronic heart failure: intravenous or oral? Eur. J. Heart Fail. 2015;17(3):248–262. DOI: 10.1002/ejhf.236.</mixed-citation></citation-alternatives></ref><ref id="cit10"><label>10</label><citation-alternatives><mixed-citation xml:lang="ru">Jankowska E.A., Malyszko J., Ardehali H., Koc-Zorawska E., Banasiak W., Von Haeling S. et al. Iron status in patients with chronic heart failure. Eur. Heart J. 2013;34(11):827–834. DOI: 10.1093/eurheartj/ehs377.</mixed-citation><mixed-citation xml:lang="en">Jankowska E.A., Malyszko J., Ardehali H., Koc-Zorawska E., Banasiak W., Von Haeling S. et al. Iron status in patients with chronic heart failure. Eur. Heart J. 2013;34(11):827–834. DOI: 10.1093/eurheartj/ehs377.</mixed-citation></citation-alternatives></ref><ref id="cit11"><label>11</label><citation-alternatives><mixed-citation xml:lang="ru">Anker S.D., Comin Colet J., Filippatos G., Willenheimer R., Dickstein K., Drexler H. et al. Ferric carboxymaltose in patients with heart failure and iron deficiency. N. Engl. J. Med. 2009;361(25):2436–2448. DOI: 10.1056/NEJMoa0908355.</mixed-citation><mixed-citation xml:lang="en">Anker S.D., Comin Colet J., Filippatos G., Willenheimer R., Dickstein K., Drexler H. et al. Ferric carboxymaltose in patients with heart failure and iron deficiency. N. Engl. J. Med. 2009;361(25):2436–2448. DOI: 10.1056/NEJMoa0908355.</mixed-citation></citation-alternatives></ref><ref id="cit12"><label>12</label><citation-alternatives><mixed-citation xml:lang="ru">Ponikowski P., van Veldhuisen D.J., Comin-Colet J., Ertl G., Komajda M., Mareev V. et al. Beneficial effects of long-term intravenous iron therapy with ferric carboxymaltose in patients with symptomatic heart failure and iron deficiency. Eur. Heart J. 2015;36(11):657–668. DOI: 10.1093/eurheartj/ehu385.</mixed-citation><mixed-citation xml:lang="en">Ponikowski P., van Veldhuisen D.J., Comin-Colet J., Ertl G., Komajda M., Mareev V. et al. Beneficial effects of long-term intravenous iron therapy with ferric carboxymaltose in patients with symptomatic heart failure and iron deficiency. Eur. Heart J. 2015;36(11):657–668. DOI: 10.1093/eurheartj/ehu385.</mixed-citation></citation-alternatives></ref><ref id="cit13"><label>13</label><citation-alternatives><mixed-citation xml:lang="ru">Anker S.D., Kirwan B.-A., van Veldhuisen D.J., Filippatos G., CominColet J., Ruschitzka F. et al. Effects of ferric carboxymaltose on hospitalisations and mortality rates in iron-deficient heart failure patients: an individual patient data meta-analysis: Outcomes in iron-deficient heart failure patients. Eur. J. Heart Fail. 2018;20(1):125–133. DOI: 10.1002/ejhf.823.</mixed-citation><mixed-citation xml:lang="en">Anker S.D., Kirwan B.-A., van Veldhuisen D.J., Filippatos G., CominColet J., Ruschitzka F. et al. Effects of ferric carboxymaltose on hospitalisations and mortality rates in iron-deficient heart failure patients: an individual patient data meta-analysis: Outcomes in iron-deficient heart failure patients. Eur. J. Heart Fail. 2018;20(1):125–133. DOI: 10.1002/ejhf.823.</mixed-citation></citation-alternatives></ref><ref id="cit14"><label>14</label><citation-alternatives><mixed-citation xml:lang="ru">Хроническая сердечная недостаточность. Клинические рекомендации 2020. Российский кардиологический журнал. 2020;25(11):4083. DOI: 10.15829/1560-4071-2020-4083.</mixed-citation><mixed-citation xml:lang="en">Clinical practice guidelines for Chronic heart failure. Russian Journal of Cardiology. 2020;25(11):4083. (In Russ.). DOI: 10.15829/1560-4071-2020-4083.</mixed-citation></citation-alternatives></ref><ref id="cit15"><label>15</label><citation-alternatives><mixed-citation xml:lang="ru">Национальное гематологическое общество, Национальное общество детских гематологов и онкологов. Клинические рекомендации «Железодефицитная анемия» 2021-2022-2023 (09.09.2021). Утверждены Минздравом РФ. URL: https://gbpokachi.ru/upload/medialibrary/81b/hmct9ew0cod31zwgy2y2skydhvgcn4gk.pdf (13.10.2023).</mixed-citation><mixed-citation xml:lang="en">National Hematology Society, National Society of Pediatric Hematologists and Oncologists. Clinical recommendations “Iron deficiency anemia” 2021-2022-2023 (09.09.2021). Approved by the Ministry of Health of the Russian Federation. (In Russ.). URL: https://gbpokachi.ru/upload/medialibrary/81b/hmct9ew0cod31zwgy2y2skydhvgcn4gk.pdf (13.10.2023).</mixed-citation></citation-alternatives></ref><ref id="cit16"><label>16</label><citation-alternatives><mixed-citation xml:lang="ru">World Health Organization. (‎2020)‎. WHO guideline on use of ferritin concentrations to assess iron status in individuals and populations. World Health Organization. URL: https://apps.who.int/iris/handle/10665/331505 (13.10.2023).</mixed-citation><mixed-citation xml:lang="en">World Health Organization. (‎2020)‎. WHO guideline on use of ferritin concentrations to assess iron status in individuals and populations. World Health Organization. URL: https://apps.who.int/iris/handle/10665/331505 (13.10.2023).</mixed-citation></citation-alternatives></ref></ref-list><fn-group><fn fn-type="conflict"><p>The authors declare that there are no conflicts of interest present.</p></fn></fn-group></back></article>
