IJSR International Journal of Scientific Research 2277 - 8179 Indian Society for Health and Advanced Research ijsr-9-7-30728 Original Research Paper A COMPARATIVE STUDY OF BUPIVACAINE 0.5% AND ROPIVACAINE 0.75% FOR INTERSCALENE BRACHIAL PLEXUS BLOCK USING PERIPHERAL NERVE STIMULATOR IN ADULT PATIENTS UNDERGOING ELECTIVE UPPER LIMB SURGERIES Yogesh kumar Manik Dr. Dr. Navab Singh Dr. July 2020 9 7 01 02