🚨 Modified Early Warning Score (MEWS)
Detect clinical deterioration early with the Modified Early Warning Score (MEWS).
Clinical takeaway
A score ≥ 5, or any single parameter scoring 3, usually triggers escalation.
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When to use
Aggregate routine vital signs into a track-and-trigger score.
How it works
Band-based points for systolic BP, heart rate, respiratory rate, temperature and AVPU. ≥ 5 commonly triggers urgent review.
Key points
- A score ≥ 5, or any single parameter scoring 3, usually triggers escalation.
- NEWS2 is a widely adopted successor.
- Follow local track-and-trigger protocols.
References
Decision support for licensed clinicians only; not a substitute for clinical judgement, diagnosis or local protocols.
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.
| Systolic BP | ≤ 70 |
|---|---|
| Heart rate | < 40 |
| Respiratory rate | < 9 |
| Temperature | < 35 °C |
| AVPU | Alert |
→MEWS9
- Interpretation：≥ 5 — high risk; urgent review/escalation
- Note：A score ≥ 5 (or any single parameter scoring 3) is commonly used as a trigger for rapid-response review.
| Systolic BP | ≥ 200 |
|---|---|
| Heart rate | ≥ 130 |
| Respiratory rate | ≥ 30 |
| Temperature | ≥ 38.5 °C |
| AVPU | Unresponsive |
→MEWS13
- Interpretation：≥ 5 — high risk; urgent review/escalation
- Note：A score ≥ 5 (or any single parameter scoring 3) is commonly used as a trigger for rapid-response review.
Frequently asked questions
- What is Modified Early Warning Score (MEWS)?
- Detect clinical deterioration early with the Modified Early Warning Score (MEWS).
- How is Modified Early Warning Score (MEWS) calculated? What is the core formula?
- Band-based points for systolic BP, heart rate, respiratory rate, temperature and AVPU. ≥ 5 commonly triggers urgent review.
- When is Modified Early Warning Score (MEWS) used?
- Aggregate routine vital signs into a track-and-trigger score.
- What are the key clinical points for Modified Early Warning Score (MEWS)?
- A score ≥ 5, or any single parameter scoring 3, usually triggers escalation. NEWS2 is a widely adopted successor. Follow local track-and-trigger protocols.
- What are the limits and cautions when using Modified Early Warning Score (MEWS)?
- 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.
- How is Modified Early Warning Score (MEWS) calculated in practice? Can you show a worked example?
- Inputs: Systolic BP ≤ 70, Heart rate < 40, Respiratory rate < 9, Temperature < 35 °C, AVPU Alert → Result: MEWS 9（Interpretation: ≥ 5 — high risk; urgent review/escalation, Note: A score ≥ 5 (or any single parameter scoring 3) is commonly used as a trigger for rapid-response review.） Inputs: Systolic BP ≥ 200, Heart rate ≥ 130, Respiratory rate ≥ 30, Temperature ≥ 38.5 °C, AVPU Unresponsive → Result: MEWS 13（Interpretation: ≥ 5 — high risk; urgent review/escalation, Note: A score ≥ 5 (or any single parameter scoring 3) is commonly used as a trigger for rapid-response review.）