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您请求的操作仅限于组中的用户:==流行病学==[[文件:血细胞——红细胞、血小板、白细胞。png|右|无边框]]贫血影响着世界三分之一的人口。通常情况下，它是轻微和无症状的，不需要管理。这是一个全球性的健康问题，主要影响孕妇和幼儿。根据世界卫生组织的数据，全球42%的5岁以下儿童和40%的孕妇患有贫血。= tab_1贫血][https://www.who.int/health-topics/anaemia #选项卡。2021 * 85岁以上人群患病率超过20%:养老院贫血发生率为50%-60%;在老年人中，大约33%的患者因营养缺乏而导致贫血，如铁、叶酸或[[维生素B12缺乏症]];33%的患者有肾衰竭或慢性炎症的证据Patel KV。[https://pubmed.ncbi.nlm.nih.gov/18809090/老年人贫血的流行病学]。《血液学研讨会2008年10月1日》(Vol. 45, No. 4, pp. 210-217) WB Saunders.. * Other at-risk groups include [[Alcoholism|alcoholics]], the homeless population, and those experiencing neglect or abuse. * New-onset anemia, especially in those over 55 years of age, needs investigating and should be considered [[Oncological Disorders|cancer]] until proven otherwise (especially true in men of any age who present with anemia). * Race is also an important determinant of anemia, with the prevalence increasing in the African American population from e.g. Thalassemia * In 2010, it was found that Sub-Saharan Africa, South Asia, the Caribbean, and Oceania had the highest anemia prevalence across all age groups and both sexesKassebaum NJ, Jasrasaria R, Naghavi M, Wulf SK, Johns N, Lozano R, Regan M, Weatherall D, Chou DP, Eisele TP, Flaxman SR. [https://pubmed.ncbi.nlm.nih.gov/24297872/ A systematic analysis of global anemia burden from 1990 to 2010]. Blood, The Journal of the American Society of Hematology. 2014 Jan 30;123(5):615-24. === Biological Mechanism of Anaemia === Physiologically, anaemia results from a disproportionate loss of red blood cell compared to production .Chaparro CM, Suchdev PS. [https://pubmed.ncbi.nlm.nih.gov/31008520/ Anemia epidemiology, pathophysiology, and etiology in low-and middle-income countries]. Annals of the new York Academy of Sciences. 2019 Aug;1450(1):15. This can occur for two reasons: # Deficient erythropoiesis: Erythropoiesis is the process of red blood cell formation in a living tissue. # Excessive loss of erythrocytes e.g. in hemolysis or blood loss or both 回到 检索自"http:///Anaemia”
回到 检索自"http:///Anaemia”
