IJSR International Journal of Scientific Research 2277 - 8179 Indian Society for Health and Advanced Research ijsr-10-4-34478 Original Research Paper A Comparative Study Between Thoracic Epidural Block and Paravertebral Block Using Single Dose Ropivacaine For Intra-Operative Hemodynamic Parameters L. S. Mishra Dr. Dr. Vaibhav Singh Dr. April 2021 10 4 01 02