Early diagnosis of delirium after cardiac surgery.

In order to detect patients who become delirious after cardiac surgery in an early postoperative stage, an observational checklist was used. Fifteen patients were constantly observed during their 48-hour stay at the intensive care unit for postoperative care. Two (13%) male patients developed postoperative delirium according to DSM-III-R criteria. It was possible to detect these patients in an early postoperative stage (within 48 hours) by means of systematic observations of their behavior.