Results of initial assessment
| Screening result | Recommendation |
|---|---|
| *Additional risk factors: hypercapnia; FEV1 <50% predicted; lung cancer; restrictive lung disease involving the parenchyma (fibrosis,) chest wall (kyphoscoliosis) or respiratory muscles; ventilator support; cerebrovascular or cardiac disease; within 6 weeks of discharge for an exacerbation of chronic lung or cardiac disease. | |
| Sea level Spo2 >95% | Oxygen not required [B] |
| Sea level Spo2 92–95% and no risk factor* | Oxygen not required [C] |
| Sea level Spo2 92–95% and additional risk factor* | Perform hypoxic challenge test with arterial or capillary measurements [B] |
| Sea level Spo2 <92% | In-flight oxygen [B] |
| Receiving supplemental oxygen at sea level | Increase the flow while at cruising altitude [B] |