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Comparison of volume-averaged FiO2 at SF 6.0 L/min and PF setting number 6.0, averaged over n different airway replicas, measured using five successive breaths per replica.
Notes: For exercise and rest breathing patterns, n=15. For the sleep breathing pattern combined with pulse mode, n=11; with sleep mode, n=14. Error bars indicate one standard deviation.
Abbreviations: FiO2, fraction of inspired oxygen; SF, steady flow; PF, pulse flow.
