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尽管甲状腺毒症与肾上腺髓质活动过度的临床表现相似,但甲状腺机能亢进(甲亢)并无肾上腺髓质活动过度的证据:24小时的去甲肾上腺素、肾上腺素、香草基扁桃酸及甲氧基肾上腺素分泌率均属正常。不管甲状腺毒症时对儿茶酚胺敏感性明显增加的机制如何,在本症治疗中,β受体阻滞剂无疑是有效的。心得安可减轻心悸、心率、神经过敏、出汗和震颤,还可以降低耗氧量。心得安最初被认为对甲状腺素无作用,但Roszkowska等发现它可以降低血浆T_3的浓度,T_3浓度降低与反T_2(τT_3)增高有关。因大多数T_3和rT_3是由T_4在外周而不是在甲状腺内脱碘。可能的解释是心得安使T_4脱碘在外周从B环(T_3的产物)转为A环(rT_3的产物)。以T_4替代治疗甲状腺机能减退患者时也表现出与心得安治疗
Although thyrotoxicosis is similar to the clinical manifestations of hyperactive adrenal medulla, there is no evidence of hyperactivity of the adrenal medulla: 24-hour norepinephrine, epinephrine, vanillylline and methoxy Adrenaline secretion rate is normal. Regardless of the mechanism of a significant increase in sensitivity to catecholamines in thyrotoxicosis, β-blockers are undoubtedly effective in the treatment of this disease. Encore relieves heart palpitations, heart rate, nervousness, sweating and tremor, but also can reduce oxygen consumption. Propranolol was originally considered to have no effect on thyroxine, but Roszkowska found that it can reduce the concentration of plasma T_3, T_3 concentration decreased and anti-T_2 (τT_3) increased. Because most T_3 and rT_3 are deiodinated by T_4 in the periphery rather than in the thyroid. A possible explanation is that deiodination of T 4 detoxifies peripherally from the B loop, a product of T 3, to A loop (a product of rT 3). T_4 alternative treatment of hypothyroidism patients also showed peace of mind treatment