摘要:目的 探討原發甲狀腺功能減退癥患者認知損害的特點.方法 原發性甲狀腺功能減退(甲減)患者60例,與同年齡同文化程度同性別正常人匹配共60人,進行神經心理學檢測.結果 輕度甲減組患者(亞臨床甲減組)其詞語學習能力、圖像記憶、復雜圖形記憶,圖形延遲記憶及數字順背倒背,詞語流暢性,連線A連線B有明顯差別(6.0±1.6對7.6±1.1,7.3±1.4對8.6±1.1,9.1±1.9對10.0±0.1,6.7±1.4對9.1±1.2,11.4±2.5對13.3±1.5,11.3±2.2對12.8±1.5,8.0±1.8對9.2±0.8,5.0±1.6對6.7±1.6,12.5±3.8對15.7±2.0,61.1±32.5對41.9±10.6,82.0±40.2對43.2±14.5,均P<0.05).中度甲減患者組重度甲減組還有復雜圖形復制、鐘表、擺積木實驗,數字符號實驗均有明顯差異(26.2±5.0對29.4±4.7,6.3±1.5對6.8±1.4,8.9±2.2對9.9±0.2,28.7±9.7對37.0±6.0,6.4±1.1對9.4-1.3,8.5±1.0對9.4±0.6,11.9±3.0對12.9±1.7,8.1±1.8對9.5±1.1,5.1±1.7對6.6±1.5,11.4±2.9對15.1±2.4,55.1±12.2對41.0±11.6,均P<0.05).結論 甲狀腺激素水平變化伴隨著認知功能損害程度的改變,說明認知功能對甲狀腺激素的強烈依賴性.%Objective To investigate the neuropsychological characteristics of primary hypothyroidism.Method Sixty patients with primary hypothyroidism were enrolled and 60 euthyroid subjects with age-,gender-,and education-matched served as control.Neuropsychological parameters were determined in all the participants.Result The word list learning,figure recall,picture recall,verbal fluency,digit span,and trail making A and B in subclinical hypothyroid patients were impaired as compared with the control (6.0± 1.6 vs 7.6± 1.1,7.3± 1.4 vs 8.6±1.1,9.1±1.9 vs 10.0±0.1,6.7±1.4 vs 9.1±1.2,11.4±2.5 vs 13.3±1.5,11.3±2.2 vs 12.8±1.5,8.0±1.8 vs 9.2±0.8,5.0±1.6 vs 6.7±1.6,12.5±3.8 vs 15.7±2.0,61.1±32.5 vs 41.9±10.6,82.0±40.2 vs 43.2±14.5,all P<0.05 ).Neuropsychological dysfunctions in all 11 tests were found among moderate and severe hypothyroid patients(26.2±5.0 vs 29.4±4.7,6.3±1.5 vs 6.8±1.4,8.9±2.2 vs 9.9±0.2,28.7±9.7 vs 37.0±6.0,6.4±1.1 vs 9.4±1.3,8.5±1.0 vs 9.4±0.6,11.9±3.0 vs12.9±1.7,8.1±1.8 vs 9.5±1.1,5.1±1.7 vs 6.6±1.5,11.4±2.9 vs 15.1±2.4,55.1±12.2 vs 41.0±11.6,all P<0.05).Conclusion The severity of cognitive impairment is accompanied with the decrease of thyroid function,it suggests that the cognitive function must depend on the normal levels of thyroid hormones.