碘盐供应对上海人群碘营养水平的影响

Effects of salt iodination on iodine level of people in Shanghai

目的观察碘缺乏病非流行区的人群在供应碘盐后的碘营养水平。方法以ＰＰＳ法随机抽取３０所小学校的学生（８～１０周岁）为观察对象，收集随机尿进行尿碘（酸消化砷铈接触比色法）和甲状腺容积的测定（触诊法和Ｂ超法），同时收集学生家庭中的盐样进行碘含量测定（半定量法）。结果 １２０６名小学生的甲状腺肿大率为３.９０％（触诊法）和３.０７％（Ｂ超法）；尿碘的中位数为２３１、０１μｇ／Ｌ，其频数分布＜１００μｇ／Ｌ的人数占１５．５１％；碘盐的合格率为８７．８９％。结论在全面供应了碘盐１年后，上海地区人群的碘营养水平已有很大的提高，且处于安全的范围之内。

Objective Observe the iodine level of people after iodinated salt supply for one year in non-en- demic area of iodine deficiency disorders (IDD). Methods Pupils,as target population,from 30 primary schools selected by PPS were included in this study.Random urinary samples from these pupils were collected and iodine concentration was measured;thyroid size was determined by ultrasonography and palpation;and salt samples from pupils' homes were collected and iodine level was measured. Results Among 1206 pupils,goiter rate of 3.90% was found by palpation and 3.07 % by ultrasonography. Median level of urinary iodine was 231.01μg/L,and fre- quency study showed that proportion for persons whose urinary iodine concentration less than 100μg/L was 15.5%. Proportion of households consuming effective iodinated salt was 87. 98%.Conclusions The results showed that iodine level of people was increased greatly,but still under the safety point after one year iodinated salt supply in Shanghai. Although more and more patients with large thyroid were reported by doctors,this study did not support relation between this situation and iodinated salt supply.