What question did this study set out to answer?

To measure arterial oxygen tensions attained by normal subjects using different oxygen delivery devices.

Arterial Oxygen Tensions Attained in Normal Subjects Breathing Oxygen through Various Devices

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Experimental study measures arterial oxygen tension in healthy individuals, suggesting insights for oxygen therapy.

To measure arterial oxygen tensions attained by normal subjects using different oxygen delivery devices.
Observed arterial oxygen tensions in 12 normal subjects
Used simple masks, rebreathing masks, aerosol masks, and nasal cannulas
Tested devices in 40, 70, and 100 percent oxygen modes
Nasal cannula achieved a mean PaO2 of 142 mm Hg
Simple mask had a mean PaO2 of 166 mm Hg
Partial rebreather mask yielded a mean PaO2 of 270 mm Hg
Aerosol masks produced varying PaO2 values based on oxygen concentration, up to 261 mm Hg
Females exhibited higher arterial oxygen levels than males for the same devices

Shelley et al. (1976) studied this question.

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