Effect of Pre-extubation Bupivacaine Infiltration on Postoperative Pain and Opioid Consumption After Orthognathic Surgery

Orthognathic surgery is commonly associated with moderate to severe postoperative pain, often requiring opioid-based analgesia. However, opioid use may be associated with adverse effects such as nausea, vomiting, sedation, and respiratory depression. Therefore, optimizing postoperative pain management while minimizing opioid consumption remains an important clinical goal.Local anesthetic infiltration has been proposed as a simple and effective method for improving postoperative analgesia. Bupivacaine, a long-acting local anesthetic, may provide prolonged pain control when administered at surgical sites.This randomized clinical study was conducted to evaluate the effect of pre-extubation infiltration of bupivacaine on postoperative pain and opioid consumption in patients undergoing orthognathic surgery. Patients undergoing one-piece Le Fort I osteotomy combined with bilateral sagittal split ramus osteotomy were randomly assigned to either a control group receiving standard care or a study group receiving additional infiltration of 0.5% bupivacaine with epinephrine at surgical sites prior to extubation.Postoperative pain was assessed using a visual analogue scale at predefined time points over a 48-hour period. Morphine consumption, including total and rescue doses, was recorded during the first 24 hours.It was hypothesized that pre-extubation bupivacaine infiltration would reduce postoperative pain intensity and opioid requirements compared with standard care