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目的探讨铅中毒儿童各年龄期血锌、钙、铁水平,为防治铅中毒、合理补充微量元素提供临床指导。方法随机选择儿保门诊儿童铅中毒组140例,非铅中毒组140例,分幼儿期、学龄前期、学龄期三个年龄期进行分析。血铅、锌、钙、铁测定采用原子吸收光谱法。结果铅中毒组儿童各年龄期血铅水平无明显差异,其均值均在轻度铅中毒范围。铅中毒组儿童各年龄期血锌、钙水平明显降低,血锌、钙缺乏检出率明显升高。铅中毒组幼儿期儿童血铁水平明显降低,学龄前期、学龄期儿童血铁水平无明显降低。结论防治儿童铅中毒应加强锌、钙营养,幼儿应适当加强铁营养。
Objective To explore the levels of zinc, calcium and iron in children of lead poisoning at various ages and to provide clinical guidance for the prevention and cure of lead poisoning and rational supplementation of trace elements. Methods 140 cases of children lead poisoning group and 140 cases of non-lead poisoning group were selected at random in child-care clinic, and were analyzed in three stages of early childhood, preschool age and school age. Blood lead, zinc, calcium, iron determination by atomic absorption spectrometry. Results There was no significant difference in blood lead levels in children of lead poisoning group at all ages, all of which were in the range of mild lead poisoning. Lead poisoning group of children of all ages of zinc, calcium levels were significantly lower, zinc, calcium deficiency detection rate was significantly increased. In the lead poisoning group, the level of blood iron in children in early childhood was significantly lower, while there was no significant decrease in serum iron level in preschool children and school-age children. Conclusion Prevention of childhood lead poisoning should strengthen zinc and calcium nutrition, children should be appropriately iron nutrition.