山东省东营市重点人群碘营养状况监测结果分析

Analysis of the surveillance of the iodine nutrition status of the targeted population in Dongying City

目的了解全民食盐加碘后东营市怀孕妇女、哺乳期妇女、0～2岁婴幼儿和学龄儿童等重点人群的碘营养状况。方法采用酸消化砷-铈接触法测定尿碘;采用直接滴定法测定盐碘。结果孕妇尿碘中位数为153.78μg/L,不同孕期尿碘水平无显著差异,哺乳期妇女为151.25μg/L,0～2岁婴幼儿尿碘中位数为187.46μg/L,儿童尿碘中位数为196.54μg/L,其尿碘值低于50μg/L的构成比均在10%以下。调查家庭食用盐1250份,碘盐覆盖率为99.28%,中位数为31.46mg/kg。结论东营市重点人群的碘营养处于适宜水平。相对于学生人群,孕妇和哺乳期妇女的尿碘水平明显向低值转移。

Objective The study was conducted to investigate the iodine nutrition status of the targeted population such as pregnant and breast-feeding women, 0-to-2-year-old infants and schoolage children after the universal salt iodization in Dongying City. Methods Urinary iodine and iodine salt consumption of the targeted population were tested and analyzed. The acid digestive arsenic- cerium reaction was used to determine the urinary iodine and direct titration was used to measure the iodine salt. Results The median urinary iodine of pregnant women was 153.78 μg/L without difference between trimesters; the median urinary iodine of breast-feeding women was 151.25 μg/L, and the medians of 0-to 2-year-old infants and children were respectively 187.46 μg/L and 196.54μg/L. The constituent ratio of people with the urinary iodine value of less than 50 μg/L was below 10%. There were 1250 investigated families that were consuming edible salt, and the coverage of iodized salt was 99.28%, with a median of 31.46 mg/kg. Conclusion An appropriate level of iodine nutrition of the targeted population in Dongying City is concluded. In contrast to students, pregnant women and lactating women have obviously lowering urinary iodine levels. Therefore, the iodine nutrition status of pregnant women and lactating women, as well as other population with specific need of iodine, should be focused on in future surveillance.