Rox Index Score Calculator

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Why increase FiO2?

It is a method of choice if the patient requires a low FiO2 or after stabilization of acute respiratory distress. Beyond 5 l/min, it is necessary to change the device because it is no longer sufficiently effective and there is a risk of nasal irritation.

Rox Index Score Calculator

The ROX index makes it possible to predict the success or failure of treatment of acute respiratory distress with high nasal flow (Optiflow™ type) in the context of pneumonia.

A ROX index ≥ 4.88 at h2, h6 or h12 of treatment is predictive of successful nasal high flow treatment. A ROX index ≤ 2.85 at h2, 3.47 at h6 or 3.85 at h12 is predictive of failure of nasal high flow treatment and a need for intubation.

Note: FiO2 should be recorded as a percentage (from 21% to 100%)