COMPARISON OF DEXMEDETOMIDINE VERSUS FENTANYL AS ADJUVANTS TO BUPIVACAINE IN SUPRACLAVICULAR BRACHIAL PLEXUS BLOCK: A PROSPECTIVE RANDOMIZED COMPARATIVE STUDY. A-JMRHS. 2026;4(2):387-393. doi:10.65605/a-jmrhs.2026.v04.i02.pp387-393