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. 2004 Jan 20;90(2):366–371. doi: 10.1038/sj.bjc.6601527

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Copyright © 2004 Cancer Research UK

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Pulse oximetry readings breathing room air, after breathing the test gas mixture at rest for 5 min and minimum reading during 6-min walk test while breathing test gases: helium/oxygen (72% He/28% O₂), oxygen-enriched air (72% N₂/28% O₂) and medical air (78.9% N₂/21.1% O₂). ▪: initial SaO₂; : SaO₂ after breathing gas for 5 min; □: minimum SaO₂ during walk. Mean±s.e.m. (n=12) #: P<0.05 cf. medical air; ## : P<0.001 cf. medical air; ^*: P<0.01 cf. oxygen-enriched air.

Inline graphic — Pulse oximetry readings breathing room air, after breathing the test gas mixture at rest for 5 min and minimum reading during 6-min walk test while breathing test gases: helium/oxygen (72% He/28% O₂), oxygen-enriched air (72% N₂/28% O₂) and medical air (78.9% N₂/21.1% O₂). ▪: initial SaO₂; : SaO₂ after breathing gas for 5 min; □: minimum SaO₂ during walk. Mean±s.e.m. (n=12) #: P<0.05 cf. medical air; ## : P<0.001 cf. medical air; ^*: P<0.01 cf. oxygen-enriched air.