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目的 研究早产儿血微量元素的含量及补充微量元素的意义。方法 采用日立 7170 A型全自动生化分析仪 ,测定 6 2例早产儿、 4 4例正常足月儿血清微量元素锌、铁、铜的含量 ,并对其中 4 2例血清微量元素水平降低的早产儿进行补充微量元素后的纵向观察。结果 足月儿血清锌、铁、铜值分别为 2 0 .86± 5 .32 μmol/ L、 2 3.84± 5 .6 6 μmol/L、 2 2 .6 7± 4 .5 3μm ol/ L ,早产儿血清锌、铁、铜值分别为 17.6 3± 4 .4 6μmol/ L、 19.75± 4 .2 4μmol/ L、19.2 6± 6 .2 1μmol/L ,早产儿血微量元素水平明显低于足月儿 (P<0 .0 1)。经微量元素治疗两周后 ,早产儿血清锌、铁、铜值均明显升高 ,达足月儿水平。结论 早产儿血清微量元素锌、铁、铜水平均低于足月儿 ,常规补充微量元素能恢复早产儿血清微量元素水平
Objective To study the content of blood trace elements and the significance of supplementing trace elements in premature infants. Methods The Hitachi 7170 A-type automatic biochemical analyzer was used to determine the contents of serum trace elements such as zinc, iron and copper in 62 preterm infants and 44 normal term infants, and 42 preterm infants whose serum levels of trace elements were reduced Longitudinal observation of children after supplementation of trace elements. Results The serum zinc, iron and copper values in full-term infants were 20.86 ± 5.32 μmol / L, 23.86 ± 5.66 μmol / L, 22.7 ± 4.53 μmol / L, The levels of serum zinc, iron and copper in preterm infants were 17.6 3 ± 4.64μmol / L, 19.75 ± 4.24μmol / L and 19.2 6 ± 6.21μmol / L, respectively, Month children (P <0. 01). After two weeks of treatment with trace elements, serum zinc, iron and copper in premature children were significantly increased, reaching full-term children’s level. Conclusion Serum trace elements zinc, iron and copper in preterm infants were lower than those in term infants. The routine supplementation of trace elements could restore the levels of serum trace elements in preterm infants