What Researchers Did
Researchers tested two types of oxygen concentrators in a mountain hut at an altitude of 3776 meters to assess their efficiency in a low-pressure environment.
What They Found
The first concentrator, powered by an internal battery, produced 28.6% oxygen and increased volunteers' arterial oxygen saturation (SpO2) from 79% to 82%, further rising to 90% with a semi-closed circuit. The second concentrator, using an external generator, delivered 90% oxygen and raised volunteers' SpO2 to 95%.
Canadian Relevance
This study has no direct Canadian connection.
Study Limitations
The study's findings are based on a small number of volunteers tested in a specific high-altitude environment, which may limit generalizability.