List of abbreviations
FiO2, inspired oxygen fraction; HFNC, high-flow nasal
cannula therapy; NPPE, negative pressure pulmonary edema; OSA,
obstructive sleep apnea; PaO2, arterial oxygen tension;
PD, Parkinson’s disease; PEEP, positive end-expiratory pressure;
SpO2, arterial oxygen saturation; UAO, upper airway
obstruction