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Cognitive function at discharge in elderly gastrointestinal surgery cases: Association with postoperative delirium Yosuke Tenpaku 1 , Masayuki Satoh 2 , Keisuke Morikawa 1 , Yasunori Imaoka 1 , Hiroyuki Takemura 1 , Kenji Kato 3 1Department of Rehabilitation, Matsusaka Municipal Hospital 2Dementia Prevention and Therapeutics, Graduate School of Advanced Institute of Industrial Technology 3Department of Surgery, Matsusaka Municipal Hospital Keyword: 消化器外科 , 術後せん妄 , Geriatric Nutritional Risk Index , Trail Making Test , 高齢者の外科手術 , gastroenterological surgery , postoperative delirium , surgery for the elderly pp.385-391
Published Date 2022/12/15
DOI https://doi.org/10.11477/mf.6001200403
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 Surgery can cause postoperative delirium (POD), a transient acute brain dysfunction. To date, there are no reports examining cognitive function after recovery from POD in the elderly. In this study, we retrospectively examined changes in cognitive function before and after surgery in elderly patients who presented with POD after gastrointestinal surgery. The subjects were 13 patients (age:81.5±5.2 male/female:10/3) admitted to the Department of Gastroenterology, Matsusaka Municipal Hospital for surgical resection between August 2019 and August 2020. The patients were classified into two groups according to the presence or absence of POD. Nutritional status as assessed by the Geriatric Nutritional Risk Index (GNRI) between the two groups and neuropsychological examination before surgery and at discharge were compared. GNRI was lower in the POD group than in the non-POD group. Neuropsychological test results also showed a significant increase in reaction time on the Trail Making Test-B at discharge in the POD group. Thus, elderly gastrointestinal postoperative patients with relatively poor nutritional status were more likely to show POD. It was also suggested that POD may affect cognitive function at the time of hospital discharge.


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電子版ISSN 印刷版ISSN 1349-5828 日本言語聴覚士協会

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