IJSR International Journal of Scientific Research 2277 - 8179 Indian Society for Health and Advanced Research ijsr-14-10-66513 Original Research Paper Efficacy Of Dexmedetomidine Compared To Fentanyl As Intrathecal Adjuvant To Bupivacaine: A Double-Blind Randomized Study Shantanu Dey Dr. October 2025 14 10 01 02