缺铁性贫血 (IDA) ·体内铁的孺要增加 ·摄入铁不足或丢失过多 体内铁不足或缺铁 Hb合成不足、小细胞低色素贫血 ·高发年龄6月-2岁
缺铁性贫血(IDA) • 体内铁的需要增加 • 摄入铁不足或丢失过多 体内铁不足或缺铁 Hb合成不足、小细胞低色素贫血 • 高发年龄6月-2岁
营养性缺铁性贫血的病因及机理 。体内总铁储存不足:早产、双胎(胎胎、胎母输 血) ·铁摄入量不足:乳制品含铁少吸收率低。不及时 添加辅食 。生长线育因素:体重增加、血容量随之增加、需 铁增加 。铁的丢失或消耗过多:牛奶过敏致肠出血、寄生 虫、消耗增多、腹泻时排铁
营养性缺铁性贫血的病因及机理 • 体内总铁储存不足: 早产、双胎(胎胎、胎母输 血) • 铁摄入量不足: 乳制品含铁少吸收率低,不及时 添加辅食 • 生长发育因素: 体重增加、血容量随之增加、需 铁增加 • 铁的丢失或消耗过多: 牛奶过敏致肠出血、寄生 虫、消耗增多、腹泻时排铁
Monocyte/macrophage Muscle,other system parenchymal cells Circulating red blood cells GI tract Erythroid Body iron supply marrow Hepatocyte and storage (Normal)
GI tract Hepatocyte TF Muscle, other parenchymal cells Monocyte/macrophage system Circulating red blood cells Erythroid marrow
Monocyte/macrophage Muscle,other system parenchymal cells Circulating red blood cells GI tract Erythroid Body iron supply marrow Hepatocyte and storage (ID)
GI tract Hepatocyte TF Muscle, other parenchymal cells Monocyte/macrophage system Circulating red blood cells Erythroid marrow
Monocyte/macrophage Muscle,other system parenchymal cells Circulating red blood cells GI tract Erythroid Body iron supply marrow Hepatocyte and storage (IDE)
GI tract Hepatocyte TF Muscle, other parenchymal cells Monocyte/macrophage system Circulating red blood cells Erythroid marrow