Purpose of Protocol: The purpose of this study will be to compare the clinical utility of Propofol sedation with and without the use of the ICU Sedation Protocol. Patients will be treated according to the attending/consulting preference. No attempt will be made to influence the patient's routine care and management. The study will compare the average hourly infusion rates for the Propofol administration, as well as obtain the nursing staffs evaluation regarding the ease of neurological assessment during each 12 hour shift