Surveillance of iodine deficiency disorders in Tibet in 2011

• DOI: 10.3760/cma.j.issn.2095-4255.2015.10.013
• Publication Date: 2015-10-20
• Authors: Min Guo; Hongqiang Gong; Shengcheng Zhao; Sangbu Danzeng; Fengzhen He
• Keywords: Iodised salt

Objective To monitor the situation of iodine deficiency disorders (IDD) in Tibet, and to provide a background information nutritional status residents before adjustment concentration.

Methods According method population proportionate sampling(PPS), 27 counties were selected carry out IDD surveillance. One primary school was each county. Forty children aged 8-10 from sampled examine thyroid volume, edible salt samples collected their home determine iodine. In addition, 12 children, 15 pregnant women lactating three townships near schools chosen detect urinary The methods B-ultrasonography, oxidation-reduction titration (GB/T 13025.7-1999) arsenic cerium catalytic spectrophotometry (WS/T 107-2006) used iodine, respectively.

Results One thousand eighty-one 8 10 examined, goiter rate 1.9% (20/1 081). Seven hundred fifty-eight determined, median level 38.3 mg/kg consuming qualified iodized 88.1%(758/668). Meanwhile, urine 522 8-10, 267 336 also tested, 166.1, 132.7, 138.1 μg/L, respectively.

Conclusions The results show that have reached national standard elimination(< 5%, 100- 300 μg/L), while consumption is still lower than standard(90%). particular, nutrition inadequate, which standard(urinary 150 μg/L). It necessary strengthen monitoring as well special groups future, health promotion at same time.

Key words: Tibet; Iodine disorders; Surveillance; Urinary iodine; Goiter, endemic