The Effect of Perioperative Lidocaine Intravenous Infusion on Postoperative Recovery After Spine Surgery.

The purpose of this study is to evaluate the effectiveness of perioperative Lidocaine intravenous infusion in reducing postoperative pain for spine surgery patients.

Study design: this study used a prospective, randomized, double-blinded, and placebo-controlled clinical trial. Sixty patients scheduled for a spine surgery will be randomly assigned to two groups. Lidocaine group will receive an intravenous bolus injection of lidocaine 1.5 mg/kg before intubation, followed by 2 mg/kg/h continuous infusion during the operation. Placebo group will receive the same dosage of saline at the same time. Analgesic requirement will be monitored using patient-controlled Analgesia (PCA protocol: demand dose is 2 mg of morphine, lockout 5 min, maximum dose 15 mg per hour). Forty-eight hours after surgery, we will check the morphine consumption in two groups. Quality of recovery after surgery will be assessed using Q0R15 questionnaire.