Evidence to Action Official Journal of MDCalc
Review of the Oxygenation Index
By Sandeep Tripathi.
Abstract
The oxygenation index (OI) captures the severity of hypoxemic respiratory failure by using two parameters of ventilator settingsbreath as the numerator and a blood oxygenation parameter as the denominator. The two ventilator parameters are Mean Airway Pressure (MAP) in cmH2O and FiO₂ as a percentage. The blood oxygenation parameter is PaO₂ in mmHg. Oxygenation Index = (FiO2 ×MAP)/PaO2 ×100 OI is built on another commonly used index, the PaO2/FiO2 (P/F) ratio, which accounts for oxygenation and delivered FiO₂, delivery but does not take into account the ventilator pressure required to achieve the PaO2.
Keywords
- Respiratory Support and Mechanisms
- Oxygenation
- Oxygenation index
- Mean airway pressure
- Blood pressure
- Blood oxygenation
- Respiratory system
- Index (typography)
- Open access
Source
Published in Evidence to Action Official Journal of MDCalc. The abstract is shown as published and remains the work of its authors; read the full article at the source.
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