🫁 HACOR Score (NIV Failure Prediction)
UseIdentify patients who may benefit from early intubation.
SourceDuan J, et al. Intensive Care Med 2017
This-shift next steps
After scoring: open the scene pack, peer scores, and the matching pathway. Local reference — no HIS write.
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Methodology · worked example, guidelines & full notes
Assessed about one hour after starting NIV.
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
Worked calculation
The values below come from this tool's own example placeholders and are computed server-side with the formula shown on this page, so the arithmetic can be checked quickly. It demonstrates how to substitute values only — it is not clinical advice and not a real case.
| Heart rate | ≤ 120 (0) |
|---|---|
| Arterial pH | 7.30–7.34 (2) |
| GCS | 13–14 (2) |
| PaO₂/FiO₂ | 151–175 (3) |
| Respiratory rate | 36–40 (2) |
→HACOR9
- Interpretation：> 5 at 1 h — high risk of NIV failure
- Action：Consider early intubation; delayed intubation after NIV failure increases mortality.
| Heart rate | ≤ 120 (0) |
|---|---|
| Arterial pH | ≥ 7.35 (0) |
| GCS | 15 (0) |
| PaO₂/FiO₂ | ≥ 201 (0) |
| Respiratory rate | ≤ 30 (0) |
→HACOR0
- Interpretation：≤ 5 — lower risk of failure
- Action：NIV likely to succeed; reassess frequently.
Verification & sources · governance
FAQ
Frequently asked questions
- What are the limits and cautions when using HACOR Score (NIV Failure Prediction)?
- For licensed clinicians and clinical researchers. Interpret results with history, investigations and local protocols; not a diagnosis or prescription, and not a substitute for multidisciplinary decision-making or local guidelines.
- Does HACOR Score (NIV Failure Prediction) upload patient data? Where is it calculated?
- Calculation runs locally in the browser; inputs and results are not uploaded. For licensed clinicians only; interpret with history, investigations and local protocols — not a diagnosis or prescription.
- How is HACOR Score (NIV Failure Prediction) calculated in practice? Can you show a worked example?
- Inputs: Heart rate ≤ 120 (0), Arterial pH 7.30–7.34 (2), GCS 13–14 (2), PaO₂/FiO₂ 151–175 (3), Respiratory rate 36–40 (2) → Result: HACOR 9（Interpretation: > 5 at 1 h — high risk of NIV failure, Action: Consider early intubation; delayed intubation after NIV failure increases mortality.） Inputs: Heart rate ≤ 120 (0), Arterial pH ≥ 7.35 (0), GCS 15 (0), PaO₂/FiO₂ ≥ 201 (0), Respiratory rate ≤ 30 (0) → Result: HACOR 0（Interpretation: ≤ 5 — lower risk of failure, Action: NIV likely to succeed; reassess frequently.）