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从受孕开始,母体发生一系列激素和代谢的变化,其中甲状腺功能的变化对母胎影响尤为重要。妊娠期母体甲状腺面临机体对甲状腺激素需要量增加和母体甲状腺可利用碘减少的矛盾。特别是在外环境碘缺乏,碘摄入量绝对或相对不足,不能适应机体生理变化的需要时,矛盾加剧,容易引发妊娠
From the beginning of pregnancy, maternal occurrence of a series of changes in hormones and metabolism, of which changes in thyroid function on the mother’s fetus is particularly important. The maternal thyroid gland during pregnancy is facing the contradiction between the increased thyroid hormone requirement and the reduction of iodine available to the mother’s thyroid. Especially in the external environment, iodine deficiency, iodine intake is absolute or relative lack of adequate physiological changes can not meet the needs of the body, the conflict intensified, easily lead to pregnancy