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由于先天性甲状腺机能低下症尽早进行治疗其智力损害可以避免,因而新生儿筛选显得十分重要。其诊断依据是出生后几天血清 TSH 高和 T_4低。出生后不久出现的这些生化指征,是否表示永久的甲状腺功能低下尚不明确。最近有资料提出,在某些情况下甲状腺功能低下可以是暂时的。有呼吸疾患的未成熟儿脐带血 T_4和T_3低而 TSH 高,但这些异常情况很快恢复。而且有资料表
Because congenital hypothyroidism is treated as soon as possible, its intellectual impairment can be avoided, so neonatal screening is very important. The diagnosis is based on a few days after birth, serum TSH high and T_4 low. Whether these biochemical indications appear shortly after birth signifies permanent hypothyroidism is unclear. Recent data suggest that in some cases hypothyroidism can be temporary. Umbilical cord blood with immature respiratory tract disorders T_4 and T_3 low and TSH high, but these abnormalities quickly recovered. And information table