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Table 1 Values pertinent to arterial oxygen carriage in the term fetus, male high-altitude climbers at 8,400 meters on Mount Everest, and typical adult male

From: Concepts in hypoxia reborn

 

Term fetus

Climbers at 8,400 metersa

'Typical' adult male

PaO2, kPa

2.5-3.5

3.28

13.3

SaO2, percentage

65

54

98

PaCO2, kPa

5.3-6.6

1.77

4.7-6.0

pH

7.25-7.35

7.53

7.35-7.45

Hb, g/dL

16.6

19.3

15.0

P50, kPa

2.5

3.6

3.5

CaO2, mL/L

150

145

200

  1. aGrocott and colleagues [3]. CaO2, arterial oxygen content; Hb, hemoglobin concentration; P50, the arterial partial pressure of oxygen at which 50% of hemoglobin is saturated with oxygen; PaCO2, arterial partial pressure of carbon dioxide; PaO2, arterial partial pressure of oxygen; SaO2, arterial oxygen saturation.