2011年重庆市碘缺乏病监测结果分析

目的了解重庆市碘缺乏病现状和居民碘营养水平，为调整食盐加碘浓度提供科学依据。方法2011年按照“人口比例概率（PPS）抽样方法”，抽取30所小学作为监测点，每点随机抽取40名8～10岁儿童，检查甲状腺大小、尿碘水平和家中食盐碘含量；在每个监测点附近，抽取3个乡镇，每个乡镇随机捕取孕妇和哺乳期妇女各5人，检测尿碘含量。结果8—10岁儿童甲状腺检查1322人，甲肿率为5．52％；盐碘检测1321份，均数为30．46mg／kg，碘盐覆盖率、合格率、合格碘盐食用率、非碘盐率分别为99．70％、97．04％、96．74％和0．30％；尿碘检测1317人，中位数为254．1μg/L，100—199．99μg/L占23．23％，≥300p．g／L占36．52％；孕妇和哺乳期妇女尿碘共检测913人，中位数为222．5μg/L，100～199．99μg/L占30．34％，I〉300μg/L占32．20％。结论2011年重庆市儿童甲肿率较低，盐碘、尿碘指标达到国家消除标准；儿童尿碘超过适宜量，孕妇和哺乳期妇女尿碘处于适宜水平。

Surveillance of Iodine Deficiency Disorders in Chongqing in 2011

Objective To investigate iodine deficiency disorders （IDD） and iodine nutrition level among the resi- dents in Chongqing for formulating preventive measures. Methods With population probability sampling method（ PPS）, 30 counties were selected for monitoring. Forty students aged 8 - 10 were selected from each of 30 pri- mary schools. Urinary iodine, salt iodine were detected while the thyroid content was measured by B ultrasound. Five pregnant women and 5 lactating women were randomly selected from 3 spot townships nearby and urinary io- dine of whom was tested. Results A total of 1, 322 students aged 8 - 10 were investigated and the goiter rate was 5.52%. A total sample of 1, 321 salts were test and the salt iodine was 30. 46mg/kg on average. The coverage rate, rate of qualified iodized salt, taking rate of qualified iodized salt and rate of non - qualified .iodized salt was 99.70% , 97.04% , 96. 74% and 0. 30% , respectively. The median of urine iodine in children aged 8 - 10 was 254. 1 μg/L. Urine iodine of 100 - 199.99 μg/L accounted for 23.23% and 300 μg/L of urine iodine ac- counted for 36.52% of the total. The median of urine iodine of pregnant and lactating women was 222.5p, g/L. Urine iodine of 100 - 199.99 p,g/L accounted for 30. 34% and urine iodine above 300 μg/L accounted for 32.20%. Conclusion Total goiter rate, salt iodine and urinary iodine have achieved the national standard for e- liminating IDD. The iodine nutrition of children exceed the adequate level ; iodine nutrition of pregnant and lacta- ting women is appropriate.