ROX Index (HFNC Outcome) — free guideline decision tool
Predict high-flow nasal cannula success with the ROX index in acute hypoxaemic respiratory failure.
Open guideline tool →Guideline-based
Implements the decision logic from published clinical guidelines.
Runs in your browser
No installation. Enter the patient's values and get a guideline recommendation instantly.
Data stays local
Nothing is uploaded. Results are for licensed clinicians only.
Common questions
What does ROX Index (HFNC Outcome) do?
Monitor response to HFNC and flag impending failure.
How is the result calculated?
ROX = (SpO₂% / FiO₂) / respiratory rate. ≥ 4.88 predicts success; < 3.85 suggests failure.
Is this a substitute for clinical judgement?
No. All results are decision-support only, for licensed clinicians. They must be individualized to the whole patient and the latest guideline version.
Run ROX Index (HFNC Outcome) now
Predict high-flow nasal cannula success with the ROX index in acute hypoxaemic respiratory failure.
Open guideline tool →For licensed clinicians. Not a substitute for clinical judgement.