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目的 了解缺碘地区食用合格碘盐的哺乳期妇女产后半年的碘代谢状况。方法 对乳母及婴儿进行随访观察 ,测定尿碘 ,乳碘及甲状腺激素。结果 产妇分娩时尿碘值为 115 .2 8～ 913.0 2μg/ L ,中位数 42 3.5 8μg/ L ;由于围产期低盐饮食 ,90 %产妇在产后半年内尿碘水平逐渐下降 ,婴儿尿碘随之变化 ;但绝大多数乳母和婴儿尿碘处于正常碘营养水平。乳碘始终处于较高水平 ;部分产妇的甲状腺激素 TT4水平偏高 ,提示 :产妇分娩前后甲状腺功能代偿性增强。结论 在食用合格碘盐的条件下 ,哺乳期妇女碘营养基本处于正常水平。但由于饮食、生活习惯等诸因素影响 ,约 2 0 %乳母碘营养水平偏低
Objective To understand the status of iodine metabolism in lactating women with iodized salt in the area of iodine deficiency six months after delivery. Methods Follow-up observation was conducted on nurse and infant to determine urine iodine, milk iodine and thyroid hormone. Results The urinary iodine value of delivery was 115.28 ~ 913.0 2μg / L and the median was 42.358μg / L. Due to the low salt diet during the perinatal period, the urinary iodine level gradually decreased in 90% of the women within six months after delivery, Iodine along with change; but the vast majority of nurse and infant urinary iodine in the normal level of iodine nutrition. Milk iodine has always been at a high level; some maternal thyroid hormone TT4 level is high, suggesting that: before and after delivery of the mother thyroid function compensatory increase. Conclusion Under the condition of eating qualified iodized salt, the iodine nutrition of lactating women is basically normal. However, due to diet, lifestyle and other factors, about 20% of milk iodine nutrition level is low