Dexmedetomidine-bupivacaine versus Ketamine-bupivacaine for Ultrasoundguided Axillary Brachial Plexus Block in Forearm and Hand Surgeries: A Tripleblind Randomised Clinical Study - Rohan Jagadish; Nilesh Balaji Giri; Gautami Ramesh Laturkar; Kritika Aggarwal; Saujas Shah (JOURNAL OF CLINICAL AND DIAGNOSTIC RESEARCH, 2026)