EXTRACONAL BUPIVACAINE IN SCLERAL BUCKLING PROCEDURES

Abstract
Intraoperative retrobulbar bupivacaine injection provides effective analgesia after scleral buckling procedures performed under general anesthesia, but is associated with significant risks. The safety and analgesic efficacy of an extraconal technique using a blunt cannula was evaluated. Forty patients undergoing scleral buckling procedures with general anesthesia were randomized to intraoperative extraconal bupivacaine injection (bupivacaine group, n=21) or to no such treatment (control group, n=19). General anesthetic and postoperative analgesia regimens were standardized. Analgesia requirements, pain, nausea, and sedation levels were graded at four intervals the first 24 hours after surgery. Chemosis was assessed 1 day after surgery, and ocular motility was assessed at 1 day, 1 week, and subsequent review. Maximum, 0 to 2-hour, and 4 to 6-hour pain levels were lower in the bupivacaine group than the control group (Wilcoxon rank sum, PConclusion: Intraoperative extraconal bupivacaine injection appears to be a safe and effective method for reducing pain and analgesia requirements after scleral buckling procedures performed under general anesthesia.