The Effect of Intravenous Lidocaine on Pain After Thyroidectomy
The Effect of Intravenous Lidocaine on Pain After Thyroidectomy
This prospective randomized study aims to evaluate the effectiveness of intravenous lidocaine
 injection on the relief of pain in patients undergoing thyroidectomy.

 A total 56 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 normal saline intravenous injection, and patients in group I
 will receive an intravenous bolus injection of 1.5mg/kg lidocaine followed by a continuous
 lidocaine infusion of 2mg/kg/hr.

 Visual analogue scale pain scores, fentanyl consumption, the frequency at which patients
 pushed the button(FPB) of a patient-controlled analgesia system, and presence or absence of
 nausea and vomiting will be recorded at 2,4,8,12,24,48 hours postoperatively.
Inclusion Criteria:

 -  Total thyroidectomy

 Exclusion Criteria:

 -  mental change

 -  allergy to local anesthetics