Buprenorphine, Clonidine, and Dexamethasone on Duration of Brachial Plexus Blocks for Upper Extremity Surgery

This study will be a prospective randomized single-blinded clinical trial. Patients undergoing shoulder arthroscopy who meet the inclusion criteria will be invited to participate in this study. A total of 120 patients will be recruited to participate. Patients will be randomized via a 1:1 ratio to either the Interscalene block with the addition of buprenorphine, clonidine, dexamethasone group or Interscalene block alone group The null hypothesis of this research study is that there will be no significant difference in morphine requirements between the Interscalene brachial plexus blocks with the addition of buprenorphine, dexamethasone, and clonidine and the same block without the adjuvant.