IJSR International Journal of Scientific Research 2277 - 8179 Indian Society for Health and Advanced Research ijsr-10-4-34643 Original Research Paper Perioperative management of patient with severe pulmonary arterial hypertension(PAH) and history of Aortic valve replacement posted for Modified Radical Neck Dissection(MRND) Dhavalkumar J. Salvi Dr. April 2021 10 4 01 02