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老年贫血相当多见,女略多于男。除缺铁外,感染是主要原因,维生素B_(12)和叶酸缺乏引起的巨幼细胞性贫血和慢性病贫血亦较常见,铁粒幼细胞贫血、溶血性贫血和再障比较少见,恶性贫血在我国属罕见病。健康无贫血老人中缺铁相当普遍,男女分别为10％和13％,老人牙齿脱落、咀嚼困难、胃粘膜腺体萎缩、主细胞和壁细胞减少、淋巴细胞浸润,使胃酸、胃蛋白酶或内生因子合成减少,这些都影响铁的吸收,胃肠道细胞转换率增快,亦导致铁的进一步损失,结果造成机体缺铁。血清铁(SI)低于正常水平,不一定表示机体缺铁,慢性炎性疾病和恶性病时SI亦低,急性感染和外科手术亦可引起短暂SI降低。慢性病、感染及蛋白合成减少或丢失过多时,转铁蛋白(Tf)降低,而机体缺铁时Tf升高。诊断老年人
Elderly anemia is quite common, slightly more women than men. In addition to iron deficiency, the main cause of infection, vitamin B_ (12) and folic acid deficiency caused by megaloblastic anemia and chronic anemia are more common, iron granule cell anemia, hemolytic anemia and aplastic anemia is less common, pernicious anemia My country is a rare disease. Iron deficiency is very common in the elderly without anemia, 10% and 13% for men and women, respectively. The elderly suffer from tooth loss, chewing difficulties, atrophy of the gastric mucosa gland, reduction of major and parietal cells, infiltration of lymphocytes, gastric acid, pepsin, Reduced synthesis of raw factors, which affect the absorption of iron, gastrointestinal cells faster conversion rate, but also lead to further iron loss, the result of the body iron deficiency. Serum iron (SI) below normal levels does not necessarily mean body iron deficiency, SI in chronic inflammatory diseases and malignant diseases is also low, acute infection and surgery can also cause short-term SI decreased. Chronic disease, infection and protein synthesis decreased or lost too much, transferrin (Tf) decreased, while the body iron deficiency, Tf increased. Diagnosis of the elderly