秦巴山区宁强试验点弱智儿童维生素A营养状况分析

Analysis of Vitamin A Nutrition Status of Mentally Retarded Chidren in Qinba Mountain Area

以秦巴山区宁强试验点４９名弱智儿童为试验组，以当地７４名智力正常儿童为对照组，采用荧光分析法测定了两组儿童的血清ＶｉｔＡ水平。结果表明：弱智儿童与对照组儿童血清ＶｉｔＡ水平无显著差异（Ｐ＞０．００５），试验组儿童中严重缺乏维生素Ａ发病率低，但亚临床型维生素Ａ缺乏发病率高，分别为６３．３％和６８．９％。其中，０岁～６岁儿童发病率显著高于７岁～１４岁儿童（Ｐ＜０．００５），从而提示贫困山区弱智儿童中存在严重的亚临床型维生素Ａ缺乏。

Using fluorimetry the concentrations of serum vitamin A of fourty nine mental retarded children and seventy four control subjects were determined.The results demonstrated that the average serium vitamin A concentration of mental retarded children was 36.02 μg/dL±2.04 μg/dL,and there was no significant difference between the two groups.the rate of sub clinic vitamin A deficiency of the two groups was 63.33% and 68.92% respectively.The result pointed out that there was sub clinic Vitamin A deficiency in Qinba mountain area on large scale.