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Table 1 Alveolar oxygen partial pressure while breathing air or 100% oxygen at different ambient pressures from 1 to 3 ATA

From: Bench-to-bedside review: Oxygen as a drug

Total pressure

  

ATA

mm Hg

PAO2 on air

PAO2 on 100% O2

1

760

102

673

2.5

1,900

342

1,813

3

2,280

422

2,193

  1. ATA, atmosphere absolute; PAO2, alveolar oxygen partial pressure.
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Critical Care

ISSN: 1364-8535