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目的：观察Ⅱ型呼吸衰竭时患者甲状腺素（Ｔ４）、抗利尿激素（ＡＤＨ）代谢的变化特点及低Ｔ３综合征，抗利尿激素分泌失调综合征的临床意义。方法：对２７例Ⅱ型呼吸衰竭患者进行电解质、甲状腺素、皮质醇和２４小时尿钠检测，结果：１２例低钠血症的患者中５例伴有高渗尿；２７例患者中２４例出现三碘甲状腺原氨酸（Ｔ３）降低。结论：Ⅱ型呼吸衰竭可致抗利尿激素分泌失调综合征及低Ｔ３综合征；前者使病情复杂化，后者与预后有关。
Objective: To observe the changes of thyroid hormone (T4) and antidiuretic hormone (ADH) metabolism in patients with type Ⅱ respiratory failure and the clinical significance of low T3 syndrome and antidiuretic hormone secretion syndrome. Methods: Electrolytes, thyroxine, cortisol and 24-hour urinary sodium were tested in 27 patients with type Ⅱ respiratory failure. Results: 5 of 12 patients with hyponatremia were accompanied by hyperuria and 24 of 27 patients Triiodothyronine (T3) decreased. CONCLUSION: Type II respiratory failure can cause anti-diuretic hormone syndrome and hypo-T3 syndrome. The former complicates the condition and the latter relates to the prognosis.