IJSR International Journal of Scientific Research 2277 - 8179 Indian Society for Health and Advanced Research ijsr-7-7-15904 Original Research Paper Comparative study of the effect of intrathecal fentanyl on the quality of hyperbaric Bupivacaine induced subarachnoid block in adult patients Pradeep Charan Dr. Dr. Uday Kumar Gouni Dr. July 2018 7 7 01 02