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Analysis of Sleep Evaluation:Relationship among Elderly Patients after Surgery Occurred Delirium

  • TAGUCHI Toyoe
    明治国際医療大学看護学部 成人急性期看護学ユニット
  • NAKAMORI Miki
    明治国際医療大学看護学部 成人急性期看護学ユニット
  • HAYASHI Akemi
    明治国際医療大学看護学部 成人急性期看護学ユニット

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  • 手術を受けた高齢者の睡眠評価:せん妄発症との関連性からの分析

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Abstract

This study was conducted to clarify an association between sleep and the onset of delirium in elderly patients who underwent surgery of the digestive system under general anesthesia. Our subjects were instructed to wear a watch-type accelerometer for 2 days before and 1 week after surgery in order to measure activity. In addition, a survey regarding sleep was conducted.<br>In 3 of 4 patients aged over 80 years, postoperative delirium was observed on the day of surgery to 4 days after surgery. When evaluating sleep based on activity, the postoperative %sleep was markedly decreased on the day of delirium onset. In addition, sleepiness on wakeup markedly reduced 1 and 3 days after surgery, but improved 7 days after surgery. However, postoperative sleep induction and maintenance were unfavorable in comparison with those before surgery. This suggests that elderly patients' sleep early after surgery is characterized by a prolonged interval until sleep induction and broken sleep.

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