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婴儿和儿童的红细胞数及Hb量随年龄不同而有差异,根据世界卫生组织的资料,Hb的低限值在0.5～6岁者为110g/L,6～14岁为120g/L,海拔每升高1000米,Hb上升4%,低于此值者为贫血。<6个月的婴儿由于生理性贫血等因素,Hb值变化较大,目前尚无统一标准。我国小儿血液学组(1989年)暂定:Hb在新生儿期<145g/L,1～4个月时<90g/L,4～6个月时<100g/L者为贫血。缺铁性贫血是由于机体对铁的摄入不足、需要增加或丢失过多造成体内储铁缺乏,导致血红蛋白合成减少所致。本病是小儿最常见的一种贫血,发病高峰年龄为0.5～2岁。
The number of red blood cells and Hb in infants and children vary with age. According to the WHO data, the lower limit of Hb is 110g / L for children aged 0.5-6 years and 120g / L for children aged 6-14 years Elevated 1000 meters, Hb increased 4%, below this value for anemia. <6-month-old babies due to physiological anemia and other factors, Hb value changes, there is no uniform standard. Our pediatric hematology group (1989) tentatively: Hb in the neonatal period <145g / L, 1 ~ 4 months <90g / L, 4 ~ 6 months <100g / L were anemia. Iron deficiency anemia is due to the body’s inadequate intake of iron, the need to increase or lose too much cause the body’s iron deficiency, resulting in reduced hemoglobin synthesis. The disease is the most common form of anemia in children, the incidence peak age of 0.5 to 2 years old.