OpiCalc

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APACHE II MAP Calculation OI (Oxygenation Index)PaO2/FiO2 Ratio (P/F)SAPS II SIRS Criteria SOFA Score qSOFA

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OI (Oxygenation Index)

Oxygenation Index (OI): Used primarily in neonatal and pediatric critical care to assess the severity of hypoxic respiratory failure.

MAP (mmHg)

FiO2 (%)

PaO2 (mmHg)

Guidelines & Evidence

Verified

Last Review: 2026

When to Use

Last Comprehensive Review: 2026

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