Changes in Lung Aeration and Inspiratory Effort With and Without Awake Prone

"1. HFNC flow at 60 L/min or maximum tolerable flow at supine position~2. HFNC flow at 60 L/min or maximum tolerable flow at prone position~3. CPAP with full face mask at 10 cmH2O at supine position~4. CPAP with full face mask at 10 cmH2O at prone position~5. MC at supine position~6. MC at prone position"