ROX Index

Predicts high-flow nasal cannula (HFNC) failure/need for intubation in acute hypoxemic respiratory failure.

For healthcare professionals.These calculate a score or a measurement from values you enter. They do not diagnose, and they are no substitute for clinical judgement. If you are a patient, discuss any result with your own doctor rather than acting on it.

SpO₂%

FiO₂%

Respiratory Rate/min

Enter the values above to see the result.

Source

Roca O, Caralt B, Messika J, et al. An index combining respiratory rate and oxygenation to predict outcome of nasal high-flow therapy. Am J Respir Crit Care Med. 2019;199(11):1368-1376.

Shown for reference and checked against the source above. Confirm against current guidance before acting on it, and use your own clinical judgement.

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