IJSR International Journal of Scientific Research 2277 - 8179 Indian Society for Health and Advanced Research ijsr-12-3-46959 Original Research Paper Comparison Between Pre-Emptive Thoracic Epidural Analgesia Vs Conventional Thoracic Epidural Analgesia In Patients Undergoing Thoracotomy In A Tertiary Care Centre Marine Gohain Dr. Dr Raju Prasad Tayung Dr. Dr Safiya Pegu Dr. March 2023 12 3 01 02