Table 2: Potential indications of HFNCO.
| Preoxygenation before intubation |
| Acute hypoxemic respiratory failure |
| Moderate obstructive sleep apnea |
| Oxygenation following extubation |
| Sedation |
| Decrease in CO2 levels |
| Acute COPD flare-ups |
| Postoperative hypoxemia |