統合失調症患者へのRey複雑図形模写課題の臨床応用—遂行機能障害の簡易評価尺度に着目して

Clinical application of the copy task of the Rey-Osterrieth Complex Figure for patients with schizophrenia

要旨：本研究の目的は，Rey複雑図形摸写課題を用いた遂行機能障害の簡易評価尺度における統合失調症患者の特徴を明らかにすることである．統合失調症群と健常群を対象に，本評価尺度の成績における群間比較，さらには他の評価との関連について検討した．結果，統合失調症群の本評価尺度の成績は，健常群に比べ有意に低下し，BACS日本語版のロンドン塔検査や実生活を評価した作業遂行特性評価表の複数の項目との間に有意な中等度の正の相関を認めた．統合失調症患者は遂行機能の低下により本評価尺度の成績低下を認める可能性が考えられた一方で，臨床で本評価尺度を用いる際には，他の評価と組み合わせて遂行機能を捉える必要性が確認された．

　The purpose of this study was to clarify the characteristics of schizophrenia patients on a simple assessment scale for executive dysfunction using the copy task of the Rey-Osterrieth Complex Figure. We conducted an intergroup comparison of the performance of this assessment scale in a schizophrenia group and a healthy group, and investigated the relationship with other assessments. As a result, the performance of the schizophrenia group on this assessment scale was significantly lower than that of the healthy group. There was a significant moderate positive correlation between the performance of the schizophrenia group on this scale, multiple items on the Tower of London Test, and the occupational performance assessment sheet. It was thought that patients with schizophrenia may show a decline in performance on this assessment scale due to a decline in executive function. Furthermore, when using this assessment scale in clinical practice, it was confirmed that it is necessary to capture executive function in combination with other assessments.