Indian Journal of Critical Care Medicine

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VOLUME 25 , ISSUE 1 ( January, 2021 ) > List of Articles

RESEARCH ARTICLE

Correlation of Oxygen Index, Oxygen Saturation Index, and PaO2/FiO2 Ratio in Invasive Mechanically Ventilated Adults

Keywords : Invasive mechanical ventilation, Oxygenation index, Oxygen saturation index, PaO2/FiO2 ratio

Citation Information : 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.

DOI: 10.5005/jp-journals-10071-23506

License: CC BY-NC 4.0

Published Online: 18-01-2021

Copyright Statement:  Copyright © 2021; Jaypee Brothers Medical Publishers (P) Ltd.


Abstract

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.


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