High Flow Nasal Cannula and Conventional Oxygen Therapy in the Postoperative Management of Patients With Mild to Moderate Obstructive Sleep Apnea

Patients who will be randomized to high flow nasal cannula therapy. High flow nasal oxygen cannula will be applied at a flow of 20 L/min at FiO2 of 0.4 at a temperature of 36oC

Patients who will be randomized to simple oxygen mask therapy. The simple face mask will be applied in a rate range between 6-10 L/min.