The Effect of Intravenous Lidocaine on Pain After Tonsillectomy

Intravenous Lidocaine for Effective Pain Relief After Tonsillectomy: a Prospective, Randomized, Double-blind, Placebo-controlled Study

This prospective randomized study aims to evaluate the effectiveness of intravenous lidocaine injection on the relief of pain in patients undergoing tonsillectomy.

A total of 62 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.

Inclusion Criteria:

• Tonsillectomy

Exclusion Criteria:

• mental change
• allergy to local anesthetics