Whether patient-maintained sedation (the patient controls his/her degree of sedation using a hand-held device) using the drug propofol is safer and more effective when using deteriorating reaction time as an added safeguard against the potential for over sedation in a groups of patients undergoing oral surgery, general dentistry and colonoscopy.
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Minimal Sedation Level obtained (modified Objective Observers's Assessment of Sedation)
(Scores 5, fully awake to 1, unresponsive)
Maximal change in oxygen saturation (SpO2)