IJSR International Journal of Scientific Research 2277 - 8179 Indian Society for Health and Advanced Research ijsr-10-4-34421 Original Research Paper A COMPARATIVE STUDY OF INTRATHECAL FENTANYL 25µg AND BUTORPHANOL 25 µg AS ADJUVANTS TO 0.5% HYPERBARIC BUPIVACAINE FOR INFRA UMBILICAL SURGERIES Prakash Huda Dr. S.P. Chittora Dr. April 2021 10 4 01 02