IJSR International Journal of Scientific Research 2277 - 8179 Indian Society for Health and Advanced Research ijsr-8-8-20386 Original Research Paper A COMPARITIVE STUDY OF EPIDURAL BUPIVACAINE PLUS BUTORPHANOL VERSUS BUPIVACAINE PLUS FENTANYL FOR PERIOPERATIVE ANALGESIA IN LOWER LIMB SURGERIES IN KING GEORGE HOSPITAL, ANDHRA MEDICALCOLEGE, VISAKHAPATNAM, AP. HEMALATHA Dr. August 2019 8 8 01 02