Dexmedetomidine Versus Ketamine as Adjuvants in Bariatric Surgery

A bolus dose of dexmedetomidine (0.5 µg/kg ideal body weight) diluted in 0.9% normal saline is infused over 10 minutes before induction of anesthesia, followed by a continuous infusion at 0.5 µg/kg/h until 10 minutes before the end of surgery.

A bolus dose of ketamine (0.3 mg/kg ideal body weight) diluted in 0.9% normal saline is infused over 10 minutes before induction of anesthesia, followed by a continuous infusion at 0.3 mg/kg/h until 10 minutes before the end of surgery.

A bolus dose of 0.9% normal saline is infused over 10 minutes before induction of anesthesia, followed by a continuous infusion of 0.9% normal saline until 10 minutes before the end of surgery.