The care giver will be helped in the diagnosis of the cause, the management of and the treatment of agitation and delirium by a reminder. This reminder has been adapted from the guidelines from the ACCP and SCCM comity. It has been adapted on local needs by a multidisciplinary group including nurses and physicians from the ICU. Investigators will instruct nurses and physicians on the use of the reminder 3 times a week for 20 min during 1 month. Investigators will provide pocket reminders for every care giver and display posters of the reminder in key points of the ICU. The reminder will also be available on the intranet site and introduced in the SISIF system (bedside computerized patient chart).