IJSR International Journal of Scientific Research 2277 - 8179 Indian Society for Health and Advanced Research ijsr-12-9-52445 Original Research Paper A Prospective Randomized Double-Blinded Control Study Comparing The Effect Of Intrathecal 0.5% Heavy Bupivacaine And 0.75% Isobaric Ropivacaine In Perianal Surgeries Raju Bhukya Dr. Dr Gowri Shankar B Dr. September 2023 12 9 01 02