IJSR International Journal of Scientific Research 2277 - 8179 Indian Society for Health and Advanced Research ijsr-10-1-33045 Original Research Paper Comparative study of dexmedetomidine and fentanyl on haemodynamic responses during laryngoscopy and pneumoperitoneum in laparoscopic cholecystectomy Niladri Sekhar Mukhopadhyay Dr. Dr. Saurendra Nath Mitra Dr. January 2021 10 1 01 02