FIGURE 3.

Illustration of potential effects of supplemental oxygen in a patient with pulmonary fibrosis and hypoxaemia during exertion. Green lines represent potential responses with supplemental oxygen, and blue and red lines the potential responses without supplemental oxygen. Responses are not observed, the data for illustrational purposes only. Adapted from the presentation given by Magnus Ekström (Lund, Sweden) at the 2022 European Respiratory Society International Congress, with permission from the author.