论文部分内容阅读
小儿营养性贫血多见于2岁以下乳幼儿,为造血因子缺乏所致。由于血清铁、红细胞(RBC)内游离原卟啉、血清维生素B_(12)、血清叶酸含量的测定等实验室检查在基层仍未广泛开展,致使小儿营养性贫血的诊断和鉴别感到困难。笔者认为,在临床中多考虑以下几方面的问题,对营养性贫血的诊断、鉴别有帮助,较为实用。 1 掌握贫血的诊断标准,灵活分析化验结果世界卫生组织1968年提出贫血诊断标准:血红蛋白(Hb)值的低限6个月～6岁者为110g/L,7～14岁120g/L,低于以上值时称之贫血。1周内新生儿一般以145g/L为Hb正常低限,生理性贫血Hb低限值一般定90g/L。 1.1 临床常根据Hb和RBC计数,将贫血分为不同程度,Hb在90～120g/L,为轻度,60～90g/L为中度,30～60g/L为重度,30g/L以下为极重度。相应的RBC计数分别为(3～4)×10～(12)/L,(2～3)×10～(12)/L,(1～2)×10～(12)/L,1×10～(12)/L以下。
Nutritional anemia in children more common in children under 2 years of age, due to the lack of hematopoietic factors. Laboratory tests such as determination of free protoporphyrin, serum vitamin B 12 and serum folic acid in serum iron and red blood cells (RBCs) have not been widely conducted at the grassroots level, making it difficult to diagnose and differentiate nutritional anemia in children. The author believes that more consideration in the clinical aspects of the following aspects of nutritional anemia diagnosis, identification helpful, more practical. 1 to master the diagnostic criteria of anemia, flexible analysis of laboratory results in 1968 the WHO proposed the diagnostic criteria for anemia: the lower limit of hemoglobin (Hb) value of 6 months to 6 years were 110g / L, 7 to 14 years old 120g / L, low In the above value is called anemia. Neonates in 1 week generally 145g / L for the normal low limit of Hb, the lower limit of physiological anemia Hb generally 90g / L. 1.1 clinical often according to Hb and RBC count, the anemia is divided into different degrees, Hb at 90 ~ 120g / L, mild, 60 ~ 90g / L was moderate, 30 ~ 60g / L was severe, 30g / L the following Very heavy. The corresponding RBC counts were (3 ~ 4) × 10 ~ (12) / L, (2 ~ 3) × 10 12 / L, 1 ~ 2 × 10 12 / L, 1 × 10 ~ (12) / L or less.