碘盐浓度调整后四川省重点人群碘缺乏病监测结果

Monitoring Results of Iodine Deficiency Disorder in Key Populations in Sichuan Province After the Adjustment of Iodized Salt Concentration

目的全面掌握2013-2017年四川省碘盐浓度调整后重点人群的碘缺乏病病情、碘营养状况和防治效果等情况,为修订防治策略提供科学依据。方法在四川省选取21个县,每个县按东、西、南、北、中各随机抽取1个乡,对8～10岁儿童开展甲状腺B超检查,分别检查育龄妇女、孕妇、哺乳期妇女及其婴幼儿和8～10岁儿童的家中盐碘和尿碘,率的比较采用χ2检验,相关分析用Spearman等级相关分析。结果 2013-2017年8～10岁儿童B超甲肿率分别为2.2%、2.8%、2.3%、2.2%和1.5%,四川省总碘盐覆盖率分别为99.16%、99.72%、99.96%、99.69%和99.64%,合格碘盐食用率分别为97.22%、97.83%、96.42%、96.25%和96.12%,育龄妇女尿碘中位数分别为166.4、161.4、171.5、174.0和181.0μg/L;孕妇尿碘中位数分别为161.0、167.3、161.4、160.4和159.8μg/L;哺乳期妇女尿碘中位数分别为147.6、170.1、157.3、165.8和151.3μg/L;婴幼儿尿碘中位数分别为176.0、211.9、191.8、185.9和204.0μg/L;8～10岁儿童尿碘中位数分别为180.0、181.8、182.2、188.0和190.0μg/L。结论碘盐浓度调整后每年四川省碘盐、甲状腺肿、尿碘指标都达到消除碘缺乏病标准,重点人群碘营养水平总体保持适宜状态,四川省保持了消除碘缺乏病状态。

Objective To ivestigate the situation of iodine deficiency disorder(IDD), the current status of iodine nutrition and the prevention and control effect in Sichuan province after the adjustment of iodized salt concentration from 2013 to 2017 so as to provide scientific bases for adjusting the strategy for IDD prevention and control. Methods Twenty one counties were selected in Sichuan province, and in each county one town was selected in each of east, west, south,north and central directions. Thyroids of kids aged between 8 and 10 years old were examined by B-mode ultrasonography;iodine in salts from homes of as well as urinary iodine of women of childbearing ages,pregnant women,lactating women and their infants as well as children aged between 8 and 10 years were determined.Results In 2013 to 2017, the morbidity of Bmode ultrasonography-established goiter was 2.2%,2.8%,2.3%,2.2% and 1.5%,respectively. The coverage rate of iodized salt was 99.16%,99.72%,99.96%,99.69% and 99.64%,respectively. The consumption rate of qualified iodized salt was 97.22%,97.83%,96.42%,96.25% and 96.12%,respectively. The median urinary iodine of women of childbearing age was 166.4, 161.4, 171.5,174.0 and 173.3 μg/L, respectively. The median urinary iodine of pregnant women was 161.0,167.3, 161.4, 160.4 and 159.4 μg/L, respectively. The median urinary iodine of lactating mothers was 147.6,170.1,157.3,165.8 and 151.3 μg/L,respectively. The median urinary iodine of infants was 176.0, 211.9, 191.8, 185.9 and 197.1 μg/L, respectively. The median urinary iodine of children aged between 8 and 10 years was 180.0, 181.8, 182.2, 188.0 and 198.9 μg/L,respectively. Conclusion Salt iodine, urinary iodine and total goiter rate have already achieved the national standard for IDD elimination. The iodine nutrition level in key populations is suitable. The IDD eliminated state has been maintained in Sichuan province.