从孕妇妊娠初期尿碘水平看我国食盐加碘政策

The urinary iodine level in primary gestation and the policy of universal salt iodization

目的探讨我国食盐加碘政策对孕妇妊娠初期尿碘水平的作用。方法用酸消化砷铈接触法检测孕妇妊娠1～4个月的尿碘水平,分析了1995～2001年间全部数据。结果孕妇尿碘随着全民食盐加碘政策的全面实施,1996～2000年间孕妇尿碘中位数明显高于其他各年度(P<0.01),同时>500μg/L的频数分布增加,随着2000年加碘浓度的下调,2001年尿碘水平明显下降,表现为尿碘中位数低于200μg/L,>500μg/L的频数分布减少,同时<100μg/L的频数分布增加。结论对碘缺乏危害的重点人群,在坚持现有的全民食盐加碘政策的同时,应大力开展孕妇尿碘监测,同时进行有针对性的补碘和健康行为指导。

Objective To explore the influence of the salt iodization policy on the urinary iodine level in primary gestation.Methods We analyzed the datas of the urine iodine in 1 to 4 months gestation from 1995 to 2001.Result After implementing of the measures of salt iodization,the median urinary iodine level in 1997 to 1999 was higher than the other years and the proportion more than 500 μg/L had risen.The urine iodine level in 2000 and 2001 had descended when the density of salt iodine was adjusted.It showed the median of urinary iodine level was lower than 200 μg/L,the proportion higher than 500 μg/L had descended and the proportion lower than 100 μg/L had risen.Conclusions In order to eliminate Iodine Deficiency Ddisorders,when we strengthen salt iodization,we should develop the monitoring of urine iodine in gestation and the guide of healthy behavior should be given to popualtion especially pregnant women.