This prospective randomized study aims to evaluate the effectiveness of intravenous lidocaine
injection on the relief of pain in patients undergoing 1-level posterior lumbar fusion.
A total of 54 patients will be randomized into one of two groups (group C or group I) based
on Excel number generation.
Patients in group C will receive received normal saline intravenous injection, and patients
in group I will receive an intravenous bolus injection of 1.5 mg/kg lidocaine followed by a
continuous lidocaine infusion of 2 mg/kg/hr.
Visual analogue scale pain scores, fentanyl consumption and the frequency at which patients
pushed the button (FPB) of a patient-controlled analgesia system will be recorded at 4, 12,
24, 48 hours postoperatively.