大连市重点人群碘营养现状调查报告

Survey on Iodine Nutrition Status of Key Population in Dalian, China

[目的 ]了解食盐加碘浓度调整为 3 5mg/kg± 15mg/kg后大连市重点人群碘营养状况。[方法 ]选择城市和农村食用碘盐的孕妇、哺乳妇女、育龄妇女、0～ 2岁婴幼儿和 8～ 10岁儿童 5组人群检测尿碘 ,并检测盐碘、水碘和儿童B超甲状腺肿大率。[结果 ]城市与农村平均盐碘分别为 2 5 80mg/kg和 3 0 5 2mg/kg ;平均水碘为 3 3 μg/L和 6 1μg/L ;儿童B超甲肿率为 13 0 %和 7 7%。城市孕妇、哺乳妇女、育龄妇女、0～ 2岁婴幼儿和 8～ 10岁儿童尿碘水平分别为168 60、12 9 45、179 80、13 2 5 0和 195 80 μg/L ,农村为 162 0 0、172 40、15 6 90、2 5 8 95和 3 2 6 0 0 μg/L。[结论 ]在平均食盐加碘浓度为 2 5～ 3 0mg/kg时 ,各组重点人群的碘营养基本可以得到满足。同一类型地区用同一种碘盐浓度很难使所有重点人群都达到适宜的碘营养水平。建议今后要加强孕妇和哺乳妇女的碘营养监测 ,并以其作为目标人群来调整食盐加碘浓度。

Objective To investigate the iodine nutrition status of key population in Dalian after adjusting the concentration of iodized salt to 35 mg/kg±15 mg/kg. Methods Pregnant, breast feeding and childbearing women, infants and children were selected to detect the iodine content of urine. The iodine in the salt, drinking water and goiter rate were detected in urban and rural area. Results The mean salt iodine was 25.80 mg/kg and 30.52 mg/kg, the mean water iodine was 3.3 μg/L and 6.1 μg/L, and goiter rate was 13.0% and 7.7% respectively in urban and rural areas. The urine iodine (median) of pregnant, breast feeding and childbearing women, infants, school children was 168.60, 129.45, 179.80, 132.50 and 195.80 (μg/L) respectively in urban area, and was 162.00, 172.40, 156.90, 258.95 and 326.00 (μg/L) in rural area. ConclusionsThe iodine nutrition may meet the demand of population at the level of salt iodine (20-30 mg/kg). It's difficult to reach adequate iodine nutrition at one concentration of salt iodine for all key population. It's suggested that iodine nutrition surveillance of pregnant and breast feeding women should be strengthen, adjusting the concentration standard of salt iodine for all target population.