A Comparative Study between Dexmedetomidine and Dexamethasone as Adjuvants to Bupivacaine in USG - Guided Supraclavicular Block in Upper Limb Surgeries

: This study investigates the comparative effects of dexmedetomidine and dexamethasone as adjuvants to bupivacaine in ultrasound - guided supraclavicular blocks for upper limb surgeries. Conducted on 100 patients aged 20 - 60 with ASA - I and ASA - II classifications, the study divides participants into two groups: one receiving bupivacaine with dexmedetomidine and the other with dexamethasone. Key outcomes measured include the onset and duration of sensory and motor blockades, postoperative analgesia duration, time to first analgesic request, and adverse effects. Results indicate that dexmedetomidine significantly shortens the onset and extends the duration of both sensory and motor blockades compared to dexamethasone, providing superior analgesic efficacy and stable hemodynamics.