MoblO2 to Maintain Oxygenation

Many patients with chronic lung disease (e.g., chronic obstructive pulmonary disease (COPD) or interstitial lung disease (ILD)) require supplemental oxygen (O2) at some point during their disease course. Practitioners prescribe O2 to patients with chronic lung disease in hopes of the following: 1) that it will limit desaturation events and combat breathlessness, thus preventing the frustratingly slow pace and numerous rest breaks patients are forced to adopt while doing even simple tasks; 2) that it will allow patients to be more active physically (perhaps increase their ability to exercise) and socially (perhaps leave the home more often); 3) that it will stave off putative complications of hypoxemia (e.g., cognitive dysfunction, pulmonary hypertension) and 4) that it will improve health-related quality of life (HRQL). However, despite the rationale for O2, and prescribers' good intent