Arterial Blood Gas Analysis

Arterial Blood Gas Analysis

If a parameter is missing on your printout, you may enter a typical/estimated value, but interpret with caution.

Arterial Blood Gas Parameters

pH

PaCO₂ (kPa)

Normal range: 4.7 – 6.0 kPa

HCO₃⁻ (mmol/L)

Normal range: 22 – 26 mmol/L

PaO₂ (kPa)

FiO₂ (fraction)

Room air = 0.21, 40% venturi ≈ 0.40, etc.