IJSR International Journal of Scientific Research 2277 - 8179 Indian Society for Health and Advanced Research ijsr-12-3-47123 Original Research Paper The Effect Of Bupivacaine Scalp Block Versus Ropivacaine Scalp Block On Hemodynamic Responses To Skull Pin Insertion In Patients Undergoing Craniotomy Jugabrat Misra Dr. Dr. Rajiv Hazarika Dr. March 2023 12 3 01 02