Anesthetic protocol Patients will be premedicated in holding area with dexamethasone and midazolam. The patients will be monitored by American Society of Anesthesia (ASA) standards with ECG, non-invasive blood pressure, pulse oximetry and temperature probe. The blood pressure will be recorded every 2 min for the first 10 minutes then every 5 minutes. Anesthesia will be induced with lidocaine 0.5 mg kg, propofol infusion at 250 mcg/kg/min (to reduce visual bias of propofol infusion) and total volume infused will be adjusted for an induction dose of 2-3 mg/kg before bolus of muscle relaxant, rocuronium 0.5 mg kg in both SR and PR groups. Remifentanil infusion will be started at a rate of 0.4 mcg/kg/min 1-2 minutes before the propofol infusion and a 100 ml 0.9% normal saline bag will be used to blind surgeons in the sevoflurane group. Sevoflurane 1-3% will be administered in group SR, and the infusion of propofol will be stopped. After intubation remifentanil infusion will be changed to 0.2 mcg/kg/min in both groups and propofol will be maintained at 100-150 mcg/kg/min in the TIVA group.