Arterial oxygen content and delivery
Oxygen carried by hemoglobin and plasma, and oxygen delivery when cardiac output is known.
Inputs
0 of 3%
mmHg
Optional, for delivery.
L/min
When to use
- Assessing oxygen delivery in shock or anemia.
Pearls and pitfalls
- Hemoglobin carries almost all oxygen; transfusion raises content more than extra FiO₂ when saturation is already high.
Why use
Shows why saturation alone can mislead.
CaO₂ = 1.34 × Hb × SaO₂ + 0.003 × PaO₂; DO₂ = CaO₂ × CO × 10