2006年甘肃省临夏回族自治州重点人群碘营养状况调查

Survey on iodine nutrient in vulnerable population in Linxia Hui Autonomous Prefecture of Gansu in 2006

目的了解甘肃省临夏回族自治州（简称临夏州）碘缺乏病重点人群碘营养状况。方法在甘肃省临夏州8县（市）选择育龄妇女、孕妇、哺乳期妇女、0～3岁婴幼儿为调查对象，采集尿样，用WS／T107—1999过硫酸铵砷铈催化分光光度法检测含碘量：采集居民户食用盐样品，用GB／T13025．7—1999直接滴定法检测含碘量；按照《0～6岁小儿五项神经心理发育测量检查表》，测试0-3岁婴幼儿的发育商，测量婴幼儿身高和体质量。结果临夏州8县（市）中有5个县的碘盐覆盖率和合格碘盐食用率〈90％。临夏州育龄妇女、孕妇、哺乳期妇女和0～3岁婴幼儿尿碘中位数分别为90．17、89．28、84．85、107．28ug／L，尿碘〈50ug／L的比例分别为29．6％（278／938）、30．7％（239／778），32．2％（265／824）、23．9％（252／1056），尿碘在50-〈100ug／L的比例分别为25．1％（235／938）、24．0％（187／778）、23．7％（195／824）、23．7％（250／1056）；8县（市）孕妇尿碘中位数均〈150ug/L，其中6个县哺乳期妇女的尿碘中位数〈100ug/L。0～3岁婴幼儿发育商中位数为93．0，中等以下、中等和中等以上的比例分别为59．9％（395／659）、34．4％（227／659）、5．6％（37／659），身长中等以下、中等和中等以上比例分别为40．7％（266／654）、50．2％（328／654）、9．1％（60／654）；0～3岁婴幼儿体质量中等以下、中等和中等以上比例分别为35．0％（232／663）、51．3％（340／663）、13．7％（91／663）。结论甘肃省临夏州合格碘盐食用率和碘盐覆盖率低，重点人群尿碘水平低于推荐标准，重点人群尤其是孕妇和哺乳期妇女存在碘营养不足，婴幼儿存在生长发育迟滞。

Objective To assess iodine nutrient levels of vulnerable population in Linxia Hui Autonomous Prefecture of Gansu. Methods Local pregnant, lactation, child-bearing age women and 0 - 3 years old infants were selected. The urinary iodine （UI） were determined by arsenic-Ce catalytic spectrophotometry （WS/T 107-1999） and salt iodine content was determined using direct titration method（GB/T 13025.7-1999）. The development quotient （DQ） among 0 - 3 years old infants were surveyed by the scales of neuropsychologists development among 0 - 6 years old, and their body height and weight were then investigated. Results The consumption and coverage rates of iodized salt at household level were all below than 90% in 5 counties among 8 counties. The median urine iodine （MUI） among pregnant, lactation, child-bearing age women and 0 - 3 years old infants were 90.17, 89.28, 84.85 and 107.28 ug/L, respectively. The UI proportion less than 50 ug/L were 29.6% （278/938） , 30.7%（239/778）, 32.2% （265/824）, and 23.9%（252/1056）, respectively. The UI proportion equal or more than 50 ug/L and less than 100ug/L were 25.1%（235/938）, 24.0%（187/778）, 23.7%（195/824）, 23.7%（250/1056）. MUI in pregnant were all less than 150 ug/L in 8 counties, and MUI in lactation women were less than 100 ug/L in 6 counties. The DQ median of infants 0 - 3 years old was 93.0, and 59.9%（395/659）, 34.4%（227/659） and 5.6%（37/659）had a DQ below middle, at middle and above middle, respectively. Forty point seven percent（266/654）, 50.2%（328/654） and 9.1% （60/654） had a body height below middle,at middle and above middle, respectively. Thirty-five percent （232/663）, 51.3% （340/663） and 13.7% （91/663） had a body weight below middle, at middle and above middle, respectively. Conclusions The local qualified iodized salt consumption rate and iodized salt coverage rate are still low. The urine iodine level is below than the reference value recommended. The iodine nutrient is not enough among iodine deficiency disorder vulnerable population, especially in pregnant and lactation women. Infants growth development is retarded.