Lumbar Epidural Analgesia Versus Local Anesthesia With Dexmedetomidine Infusion in Endoscopic Lumbar Discectomy

Dexmedetomidine Hydrochloride which is an Alfa 2 receptor agonist

The epidural insertion point will be 2 segments upper than the surgical procedure level, 10 ml of Bupivacaine 0.25% will be injected in the epidural space to adjust the sensory level

Propofol 2-3 mg/kg'Diprivan 1%', Fentanyl 'Fentanyl' 2 μg/kg, and Cisatracurium 'Cisatracure' 0.2 mg/kg will be administered to facilitate endotracheal intubation, and ventilation will be controlled to maintain the end-tidal carbon dioxide (CO2) between 32-38 mmHg, to maintain anesthesia, 2-3% Sevoflurane 'Sevoflurane', and 0.05 mg/kg of the muscle relaxant Cisatracurium will be added at 40-minute intervals according to the conditions of the operation. No other medication will be administered

Lidocaine 1% which is a local analgesic as local infiltration