During airflight, cabins are pressurised to 8000ft (2438m) leading to an effective FiO of 0.15. This leads to a fall in oxygen saturation in all passengers, and especially those with underlying lung disease. The hypoxic challenge test using a body plethysmograph can predict a need for supplemental oxygen during airflight, and the process is described.
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| http://dx.doi.org/10.1016/j.prrv.2016.05.002 | DOI Listing |
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