Treatment arms | Assigned interventions |
---|---|
Active comparator: haloperidol | Haloperidol 0.005 mg/kg body weight at induction of anaesthesia |
Active comparator: ketamine | Ketamine 1 mg/kg body weight at induction of anaesthesia |
Active comparators: haloperidol + ketamine in combination | Haloperidol 0.005 mg/kg body weight + ketamine 1 mg/kg body weight at induction of anaesthesia |
Placebo comparator | Normal saline (NaCl 0.9%) |