IJSR International Journal of Scientific Research 2277 - 8179 Indian Society for Health and Advanced Research ijsr-12-6-50503 Original Research Paper A Randomized, Prospective, Comparative Study Comparing Ropivacaine 0.3%, 0.5% And 0.7% When Used For Ultrasound Guided Caudal Epidural Injection For Patient Undergoing Surgery Of Anorectal Region Vaibhav Singh Dr. Dr. L.S Mishra Dr. June 2023 12 6 01 02