IJSR International Journal of Scientific Research 2277 - 8179 Indian Society for Health and Advanced Research ijsr-11-11-44945 Original Research Paper Effect Of Oral Clonidine As Premedication For Controlled Hypotension In Functional Endoscopic Sinus Surgery- Prospective Double - Blinded Clinical Trial Lalith Kumar.E Dr. November 2022 11 11 01 02