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

This study aims to compare the effectiveness of conventional oxygen therapy oxygen and high-flow nasal cannula therapy on oxygen saturation (SpO2), measuring number of SpO2 drop \>4% of base line oxygen saturation (o2 desaturation index), length of the ICU stay, and the need of use supplemental continuous positive airway pressure (CPAP) support in any of the study groups in the postoperative ICU setting.