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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.