🫁 HACOR Score (NIV Failure Prediction)
Predict non-invasive ventilation failure with the HACOR score.
HACOR Score (NIV Failure Prediction)
Heart rate
Arterial pH
GCS
PaO₂/FiO₂
Respiratory rate
When to use
Identify patients who may benefit from early intubation.
How it works
Heart rate, Acidosis (pH), Consciousness (GCS), Oxygenation (PaO₂/FiO₂) and Respiratory rate. Measured ~1 h into NIV; > 5 = high risk.
Key points
- Assessed about one hour after starting NIV.
- > 5 indicates high probability of failure.
- Delayed intubation after NIV failure increases mortality.
References
Decision support for licensed clinicians only; not a substitute for clinical judgement, diagnosis or local protocols.