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目的 了解重、中度碘缺乏病区供应碘盐后出生儿童的骨龄和体格发育状况与智商水平的关系。方法 CRT- C2 测 7～ 14岁儿童智商 ,拍手腕骨 X线片判定骨龄 ,标准量具测身高、体重。结果 碘盐预防后出生儿童的骨龄、身高、体重发育落后率均随人群智商 (IQ)水平提高而下降 ,IQ5 0～ 6 9组儿童骨龄、身高、体重落后率分别为 18.3%、17.6 %、10 .2 % ,均显著高于 IQ70～ 79、IQ80～ 119、IQ≥ 12 0三组儿童 (P <0 .0 1)。轻度智商落后组儿童的骨龄发育落后以尺骨骺未按时出现为常见 ,体格发育障碍为身高落后者明显多于体重落后者 ,骨龄与身高发育落后程度一致。结论 补碘后碘缺乏病区儿童骨龄和体格发育与智商水平密切相关 ,轻度智商落后组儿童的骨龄、身高、体重发育状况显著落后于同期出生智商水平较高组儿童
Objective To understand the relationship between skeletal age, physical development and IQ of children born in severe and moderate Iodine Deficiency Disorders after supplying iodized salt. Method CRT-C2 measured 7 ~ 14-year-old children IQ, clapped wrist carpal X-ray to determine bone age, the standard measuring height and weight. Results The skeletal age, height and weight of children born after iodized salt prevention were all decreased with the increase of IQ. The skeletal age, height and weight loss of IQ5 0 ~ 69 children were 18.3%, 17.6% respectively, 10 .2%, were significantly higher than IQ70 ~ 79, IQ80 ~ 119, IQ≥12 0 three groups of children (P <0.01). The development of skeletal age in children with mild IQ lag was less common than that in patients with ulnar epiphysis. The physical development disorder was more obvious in those with backward height than in those with lower body weight. The same was true for age and height. CONCLUSION: The bone age and physical development of children with Iodine Deficiency Disorders after iodine supplementation are closely related to the IQ level. The skeletal age, height and weight development of children with mild IQ lag significantly lag behind that of children with higher IQ at the same period