Comparative Study Between Ketamine and Dexamethasone as Adjuvants to Bupivacaine in Ultrasound-Guided Supraclavicular Block in Patients Undergoing Upper-Limb Surgery
Ultrasound-guided supraclavicular brachial plexus block is widely used for anaesthesia and postoperative analgesia in upper-limb surgery. Although bupivacaine provides prolonged regional anaesthesia, its duration may be insufficient for postoperative pain control. Adjuvants such as ketamine and dexamethasone have there...