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血浆T_4、T_3浓度异常可在相当多的非甲状腺疾病中见到。新近对住院的急性内科病患者研究,发现41%有低T_3(175ng/dl),11%有低FT_4指数和2%高FT_4指数。在异常FT_4指数的病人中,18%有原发甲状腺疾病。观察门诊病人时发现:甲状腺功能异常者占12%。异常情况发生率随试验的灵敏性不同而不同。一、低T_3、低T_4临床综合征低T_3综合征和低T_4综合征的表现是连续的,轻症病例中T_3下降,严重的病例T_4也下降。
Plasma T_4, T_3 abnormalities can be seen in a considerable number of non-thyroid diseases. A recent study of hospitalized patients with acute medical conditions found 41% had low T_3 (175 ng / dl) and 11% had a low FT_4 index and a 2% high FT_4 index. Of the patients with an abnormal FT_4 index, 18% had primary thyroid disease. Observed in outpatients found: thyroid dysfunction accounted for 12%. The incidence of abnormalities varies with the sensitivity of the test. First, low T_3, low T_4 clinical syndrome Low T_3 syndrome and low T_4 syndrome performance is continuous, mild cases of T_3 decreased, severe cases of T_4 also decreased.