IJSR International Journal of Scientific Research 2277 - 8179 Indian Society for Health and Advanced Research ijsr-11-1-39511 Original Research Paper The effect of epidural volume extension on spinal block with 0.5% heavy bupivacaine in total abdominal hysterectomy -a randomised controlled study Najmin Rahaman Dr. Chiranjeeb Bhattacharjee Dr. January 2022 11 1 01 02