[A Multicenter Questionnaire Survey of Postoperative Delirium -National Hospital Organization, Surgery and Anesthesia Network Group-].

Background: Postoperative delirium in the elderly is associated with increased morbidity and risk of injury. However, the opinion of attending surgeons and anes- thesiologists regarding postoperative delirium is uncer- tain, as is the prevention and treatment of the condi- tion, in Japanese hospitals.

Methods: We conducted a multicenter questionnaire survey about postoperative delirium.