IJSR International Journal of Scientific Research 2277 - 8179 Indian Society for Health and Advanced Research ijsr-12-7-51304 Original Research Paper Evaluation Of Effectiveness Of Single Oral Dose Pregabalin On Duration Of Analgesia In Patients Undergoing Lower Limb Orthopaedic Surgeries Under Spinal Anaesthesia - A Cross-Sectional Randomized Comparative Study K. K. Dr. July 2023 12 7 01 02