Comparison of Dexmedetomidine + Ketamine for Postoperative Pain in C-Section

"Dexmedetomidine infusion at one of the following doses:~Group A: 0.2 µg/kg/hr Group B: 0.3 µg/kg/hr Group C: 0.4 µg/kg/hr Route of Administration: Intravenous Frequency: Continuous infusion during postoperative period"

"Ketamine infusion at a fixed dose of 0.25 mg/kg/hr administered in all three groups.~Route of Administration: Intravenous Frequency: Continuous infusion during postoperative period"