Fentanyl vs. Remifentanil in Laparoscopic Cholecystectomy: Effects on Bowel Function and Pain

Patients will receive fentanyl 2 µg/kg IV bolus at induction, followed by a continuous infusion of 1-2 µg/kg/h during maintenance of anesthesia. Standard anesthesia will be provided with propofol, rocuronium, and sevoflurane.

Patients will receive remifentanil 1 µg/kg IV bolus at induction, followed by a continuous infusion of 0.1-1 µg/kg/min during maintenance of anesthesia. Standard anesthesia will be provided with propofol, rocuronium, and sevoflurane.