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早在30年前就有学者报告,当机体处于不良情况时出现血清甲状腺激素水平下降。Mclver 等人报告,当机体状态轻度异常时只出现血清 T_3水平下降,而当机体状态恶化不仅血清 T_3水平下降,而且 T_4水平亦下降。例如当机体处于饥饿、感染、外伤、手术、体外循环和骨髓移植等应激情况下以及患有严重疾病时血清 T_3和 T_4水平可同时下降。但是这种血清甲状腺激素水平下降是在既无原发性甲状腺和垂体病变,又无甲
As early as 30 years ago, some scholars have reported that when the body is in poor condition, serum thyroid hormone levels decrease. Mclver et al. Reported only a decrease in serum T_3 levels when the body condition was mildly abnormal, and not only decreased serum T_3 levels, but also decreased T_4 levels when the condition deteriorated. For example, serum T_3 and T_4 levels may decline at the same time when the body is under stress conditions such as starvation, infection, trauma, surgery, cardiopulmonary bypass and bone marrow transplantation, as well as when suffering from serious diseases. However, this serum thyroid hormone levels decline in the absence of primary thyroid and pituitary lesions, and no armor