What question did this study set out to answer?

The study aims to identify the best PaO2:FiO2 threshold within the first 24 hours of ICU admission for predicting mortality.

March 5, 2026Open Access

Validation of PaO2:FiO2 for predicting hospital mortality in critically ill patients with acute hypoxaemic respiratory failure: a retrospective binational registry-based study

Puntos clave

The study aims to identify the best PaO2:FiO2 threshold within the first 24 hours of ICU admission for predicting mortality.
Analyzed data from a bi-national registry of adult patients in Australia and New Zealand
Focused on patients admitted from January 2018 to December 2022
Determined discriminatory capacity of various PaO2:FiO2 thresholds
Identified a critical PaO2:FiO2 threshold for mortality prediction
Demonstrated improved prognostication in critically ill patients
Provided data supporting ICU admission protocols

Resumen

Objective To determine the optimal PaO2:FiO2 threshold in the first 24 hours of intensive care unit admission, and its associated discriminatory capacity, for prognostication of mortality among critically ill patients. Methods This bi-national registry included adult patients admitted to intensive care units in Australia and New Zealand from January-2018 to December-2022. The primary outcome …

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