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Elizabeth L. Whitlock

, Michael S. Avidan

, and Sharon K. Inouye

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date: 22 February 2020

“Chapter 2 discusses how delirium has long been recognized as a complication of surgical or medical illness; however, until the last few decades, it received little attention in the medical literature. It also covers how delerium may complicate the postoperative course both early, as anesthetic and supportive medications are metabolized, and late, on the hospital ward or intensive care unit (ICU). It covers the remarkably high prevalence of delirium in critical care and geriatric care settings, and the prevention, treatment, use as a prognostic tool, and potential sequelae of this complication are all being actively investigated. It has long been appreciated that acute organ dysfunction, such as renal impairment or respiratory insufficiency, can occur postoperatively or as a component of critical illness, and it discusses how delirium might be a manifestation of acute brain dysfunction.”

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