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甲状腺功能减退症是体内甲状腺激素(TH)合成及分泌减少,或生理效应不足导致机体代谢低下的一种疾病。妊娠期甲状腺功能减退症可以分为3型:临床型甲状腺功能减退症(TSH升高,TH减低),亚临床型甲状腺功能减退症(TSH升高,TH正常),低T_4血症(TSH正常,TT_4或FT_4水平降低)。在妊娠期,母体内的雌激素有着明显的改变,为了满足其自身及胎儿的需求其处于高代谢状态,需要的TH也随之
Hypothyroidism is a disease in which the thyroid hormone (TH) synthesis and secretion are reduced, or the physiological effect is insufficient to cause the body’s metabolism to be low. Hypothyroidism during pregnancy can be divided into three types: clinical hypothyroidism (elevated TSH, reduced TH), subclinical hypothyroidism (elevated TSH, normal TH), low T_4 hyperlipidemia (normal TSH , TT_4 or FT_4 levels decreased). During pregnancy, estrogen in the mother has a significant change, in order to meet their own needs and their fetus in a high metabolic state, the TH needed along with it