Table 1

 Arterial blood gas analysis

PatientReference range
pH7.407.35–7.45
pCO2 (kPa)4.384.6–6.0
pO2 (kPa)6.610–13.3
Bicarbonate (mmol/l)2224–30
Base excess−3.0+2 to −2
O2 saturation (%)76>94