Portable Oxygen Concentrator Signal Capture Study

Inclusion Criteria:

• Patient is willing to give written informed consent
• Patient can read and comprehend English
• Patient is ≥ 18 years of age
• Patient has moderate to severe hypoxaemia (SpO2 ≤ 92%) at rest
• Patient reports shortness of breath on exertion

Exclusion Criteria:

• Patient has musculoskeletal impairment, or other impairment that may be the limiting factor in 6MWT
• Patient has a history of a psychological illness or condition such as to interfere with the patient's ability to understand the requirements of the study
• Patient has acute coronary syndrome, acute myo- or pericarditis, acute lung embolism, pulmonary infarction, acute uncontrolled heart insufficiency
• Patient shows signs of acute exacerbation of underlying lung condition
• Patient is deemed to be unsuitable for inclusion in the opinion of the researcher, including for the following reasons:
• they do not comprehend English
• they are unable to provide written informed consent
• they are physically unable to comply with the protocol