缺铁性贫血(|DA) 体内铁的姗要增加 摄入铁不足咸丢失过多 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 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:体量增加、血容量随之增加、 铁增加 铁的丢失成或消耗过多:牛奶过敏致肠出血、岢生 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 the er system parenchymal cells Circulating red blood cells TF G工 tract Body iron supply Erythroid 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 the er system parenchymal cells Circulating red blood cells TF( G工 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 the er system parenchymal cells Circulating red blood cells TFO G工 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