IJSR International Journal of Scientific Research 2277 - 8179 Indian Society for Health and Advanced Research ijsr-10-4-34443 Original Research Paper A COMPARATIVE STUDY OF EFFICACY AND SIDE EFFECTS OF ADDITION OF VARYING DOSES OF FENTANYL INTRATHECALLY TO HYPERBARIC BUPIVACAINE IN PATIENTS UNDERGOING LOWER LIMB SURGERIES OR INGUINAL HERNIOPLASTIES Neelam Singh Dr. Dr. L.S. Mishra Dr. April 2021 10 4 01 02