Respiratory Indices Calculator

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Oxygenation Index (OI)
Ventilation Index (VI)
Arterial Alveolar Ratio (aA Ratio)
Alveolar Arterial Oxygen Difference (AaDO2)

Respiratory indices have two main uses:

Eligibility for determining a eligibility for a treatment (for example, OI for ECMO) or research intervention (for example, AaDO2 for the LessMAS trial)
Research or audit purposes when evaluating the amount of respiratory support required for individual babies, particularly when making comparisons between differing levels of support that an infant may require.

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Blood gas units:
% inspired oxygen	%	FiO₂
PaO₂
PaCO₂
Ventilation mode
Mean Airway Pressure	cm H₂O
Peak Inspiratory Pressure (PIP)	cm H₂O
End Expiratory Pressure (PEEP)	cm H₂O
Ventilator rate	breaths/min