COPD - Is CPAP a Good Treatment?

The second thing that you didn't mention, Cyrus, and I want to add is heated high flow. Because that's been shown to be quite helpful. It allows for higher flow for O2, where patients need higher FiO2 or O2 flow. But also it does actually diminish work of breathing. And we know that people with COPD who get non-invasive partial pressure ventilation actually do better.