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在无缺碘或地甲病的发达国家中,报告的新生儿甲低发生率为1/3000至1/12000。最近,我们报告了位于亚喜马拉雅地方性甲状腺肿地带的北方邦冈达地区患病率为4%,并发现外观正常的新生儿中,T_4均值明显地低且 TSH 升高。这些研究已扩展到印度其它缺碘和甲状腺肿流行地区。虽然新生儿甲低筛查未能被任何一个发展中国家采用为防治智力发育迟缓的措施,我们仍在新生儿患病率很高的两个严重缺碘村庄,研究了学校儿童的智商(IQ),和神经性耳聋的流行情况,结果如下。
In developed countries without iodine deficiency or dementia, the reported rates of neonatal hypothyroidism range from 1/3000 to 1/12000. Recently, we reported a prevalence of 4% in the Bang Bang area in the endemic goitre of the Asian Himalayas and found that mean T_4 was significantly lower and TSH was elevated in newborns with normal appearance. These studies have been extended to other areas of iodine deficiency and goiter prevalence in India. Although screening for neonatal hypothyroidism has not been adopted by any developing country as a measure of retarding mental retardation, we examined the IQ of school children (IQ) in two severely iodine-deficient villages with a high prevalence of newborns ), And the prevalence of neurological deafness, the results are as follows.