2009年西宁市碘缺乏病防治效果调查

Investigation report of the effect of control measures to iodine deficiency disorders in Xining in 2009

目的 掌握西宁市基本达到消除碘缺乏病阶段目标后,碘缺乏病的防治效果及人群碘营养状况.方法 2009年调查西宁市7个县（区）,每个县（区）按东、西、南、北、中抽取5个乡（镇）,每个乡（镇）抽取1所学校,每所学校抽取80名8～10岁学生,采用触诊法检查儿童甲状腺肿大情况,采用过硫酸铵消化砷铈催化分光光度法测定儿童尿碘,采用直接滴定法测定学生家中食用盐含碘量.结果 共抽检2919名8～10岁儿童,检出甲状腺肿大31名,甲状腺肿大率为1.06%（31/2919）.共检测儿童尿样1078份,尿碘中位数为205.3μg/L,＜20 μg/L的占1.9%（20/1078）,＜50 μg/L的占4.5%（48/1078）.共检测2079份盐样,盐碘中位数为32.80 mg/kg,非碘盐率为0.87%（18/2079）,碘盐覆盖率为99.13%（2061/2079）,碘盐合格率为98.64%（2033/2061）,合格碘盐食用率为97.79%（2033/2079）.结论 西宁市碘缺乏病防治工作取得了明显成效,各项指标均达到国家碘缺乏病消除标准.

Objective To master iodine nutritional status of people after universal salt iodization in Xining that reached the stage goal of elimination iodine deficiency disorders. Methods In the 7 counties investigated of Xining in 2009, 5 towns were randomly selected in each county, and one school was randomly selected in each town, 80 children aged 8 to 10 were randomly selected in each school, and goiter were examined, urinary iodine and salt iodine were tested. Thyroid gland goiter of children was detected by thyroid palpation, children＇s urinary iodine was tested by As（ Ⅲ ）-Ce4＋ catalytic spectrophotometry, and salt iodine was tested by direct titration. Results A total of 2919 children aged 8 to 10 were examined, 31 goiter was detected, goiter rate was 1.06%（31/2919）.One thousand and seventy-eight urine samples were detected, urinary iodine median was 205.3 μg/L, that lower than 20 μg/L accounted for 1.9% （20/1078）, lower than 50 μg/L accounted for 4.5%（48/1078）. Two thousand and seventy-nine salt samples were detected, median of salt iodine was 32.80 mg/kg, the rate of non-iodized salt was 0.87%（18/2079）, the coverage rate of iodized salt was 99.13%（2061/2079）, the qualified rate of iodized salt was 98.64% （2033/2061）, the consumption rate of qualified iodized salt was 97.79% （2033/2079）. Conclusions Prevention and control of iodine deficiency disorders has achieved remarkable results in Xining city, all indicators have reached the national standard to eliminate iodine deficiency disorders.