Exercise Performance on Ambient Air vs. Low-Flow Liquid Oxygen Therapy in Chronic Lung Diseases
The investigators aim to study the effect of liquid oxygen therapy (4l/min, nasal) )in Swiss residents with pulmonary vascular diseases (PVD) defined as pulmonary arterial hypertension (PAH) or chronic thromboembolic pulmonary hypertension (CTEPH).
Minimum 18 years of age [+4]
Severe hypoxemia needing supplemental oxygen therapy defined as PaO2 < 6.9 kPa [+2]