Postoperative delirium assessed by post anesthesia care unit staff utilizing the Nursing Delirium Screening Scale: A prospective observational study of 1000 patients in a single Swiss institution

Delirium has become better studied, but is still only partially understood and significantly underestimated. There are some well-known risk factors, but little is known about the incidence of delirium in the diverse patient population of a post anesthesia care unit (PACU). The aim of this study was to investigate the presence of delirium using the Nursing Delirium Screening Scale (NU-DESC).