Alveolar Gas Equation Calc

Alveolar Gas Equation Calculator

Alveolar Gas Equation Calculator

Alveolar Gas Equation

FiO₂ (decimal, e.g. 0.21): Atmospheric Pressure (mmHg): PaCO₂ (mmHg): Respiratory Quotient (RQ):

* Formula: PAO₂ = FiO₂ × (Patm − PH₂O) − (PaCO₂ / RQ)
Normal PH₂O = 47 mmHg, RQ ≈ 0.8

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