Dexmedetomidine and Remifentanil in NORA

Group DP received 0.5 mcg/kg of dexmedetomidine IV for 30 seconds, then dexmedetomidine infusion was started at 0.1-0.7 mcg/kg/h. Propofol 1 mg/kg was administered after waiting for 5 minutes for adequate sedation to develop due to dexmedetomidine's delayed onset of action.

Group RP received remifentanil 0.1 mcg/kg intravenously for 30 seconds, then remifentanil infusion was started at 0.01-0.1 mcg/kg/min. After waiting 2 minutes to develop a sufficient sedation level, 1 mg/kg of propofol was given.