Oxygenation Index (OI) + Oxygen Saturation Index (OSI)
Oxygenation index OI = FiO2*MAP*100/PaO2 and oxygen saturation index OSI = FiO2*MAP*100/SpO2; pediatric ARDS severity.
Open the calculator → Runs in your browser. Data leaves only if you deliberately send a problem report from the interactive tool.
Example
- FiO2
- 0.6
- Mean airway pressure
- 15 cmH2O
- PaO2
- 80 mmHg
- SpO2
- 92 %
Result: OI 11.3 (moderate pediatric ARDS); OSI 9.8 (moderate).
The tool opens with these values already filled in. Replace them with your own.
What you enter
- FiO2 (0.21-1.0)
- Mean airway pressure
- PaO2 (omit for the saturation index alone)
- SpO2 (omit for the oxygenation index alone)
How this is calculated
Pediatric Acute Lung Injury Consensus Conference (PALICC-2), Emeriaud G, et al. Pediatr Crit Care Med. 2023;24(2):143-168. OI = (FiO2 x mean airway pressure x 100) / PaO2; OSI uses SpO2. Read the source ↗
A reference and educational tool. Not medical, legal, or financial advice, and not a substitute for clinician judgment.