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Correlation of Oxygen Index, Oxygen Saturation Index, and PaO2/FiO2 Ratio in Invasive Mechanically Ventilated Adults
1Department of Critical Care Medicine, Kokilaben Dhirubhai Ambani Hospital and Medical Research Center, Mumbai, Maharashtra, India.
Background:
With the oxygen saturation index (OSI) being a noninvasive surrogate for oxygen index (OI) and P/F ratio, examining the correlation between PaO2/FiO2 (P/F ratio), OI, and OSI in mechanically ventilated adults will benefit in those settings where arterial blood gas monitoring is not readily accessible.
Materials And Methods:
Data were collected for patients ≥18 years who were under invasive (endotracheal intubation) mechanical ventilation at medical or surgical wards in a tertiary care hospital.
Results:
After natural log transformation, the correlations between P/F ratio and OI (r = -0.94) and OI and OSI (r = 0.82) were strong, but weaker between P/F ratio and OSI (r = -0.69).
Conclusion:
Future bigger studies are needed to evaluate whether monitoring OSI and/or OI over P/F ratio will impact treatment outcomes.
How To Cite This Article:
Vadi S. Correlation of Oxygen Index, Oxygen Saturation Index, and PaO2/FiO2 Ratio in Invasive Mechanically Ventilated Adults. Indian J Crit Care Med 2021;25(1):54-55.
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