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APACHE IIMAP CalculationOI (Oxygenation Index)PaO2/FiO2 Ratio (P/F)SAPS IISIRS CriteriaSOFA ScoreqSOFA
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PaO2/FiO2 Ratio (P/F)

Lung Injury Assessment

Arterial Oxygenation

Blood Gas & Ventilator Settings

Arterial O2
Inspired O2

Room Air = 21%

Enter ABG Data

Provide the PaO2 from an arterial blood gas and the current FiO2 to evaluate oxygenation impairment.

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Last Review: 2026-07-17

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Origins & History

Last Comprehensive Review: 2026-07-17

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