Ms Olive McCafferty:

Yes, it is due to access. To have piped oxygen in an outpatient setting is new and there might be safety issues around it and a cost. However, it is a huge burden for patients. Unfortunately, they do not only bring one cylinder. Typically, if they are on a large amount of oxygen, they might need to take several with them. Those patients need to account for every minute they will be outside the house. A cylinder will run out in one hour. If they will be gone for four hours, that means they need to take four cylinders.