A Study on short general anaesthesia

INTERVENTION: Intervention1: Intravenous inj.Nalbuphine0.2mg/kg diluted to 10ml: Patients receiving Inj. Nalbuphine 0.2 mg/kg IV (diluted to 10 ml, given over 10 sec) followed by Inj. Propofol 2 mg/kg IV. Control Intervention1: Intravenous inj.Fentanyl 2mcg/kg diluted to 10ml: Patients receiving Inj. Fentanyl 2 mcg/kg IV (diluted to 10 ml, given over 10 sec) followed by Inj. Propofol 2 mg/kg IV. CONDITION: Health Condition 1: O‐ Medical and Surgical PRIMARY OUTCOME: 0 min,5 min,10 min,20 min,30 min,1hr,2hrs,3hrs,4hrs and 4hrsTimepoint: Intraoperative haemodynamic changes SECONDARY OUTCOME: postoperative sedation scores and complicationTimepoint: till the end of surgery INCLUSION CRITERIA: ASA physical status grade I and II,patients scheduled for elective surgeries under general anaesthesia planned for proseal laryngeal mask airway and patients who have given written informed consent