🚨 Modified Early Warning Score (MEWS)
UseAggregate routine vital signs into a track-and-trigger score.
SourceSubbe CP, et al. QJM 2001. doi:10.1093/qjmed/94.10.521 (MEWS; not NEWS2)
This-shift next steps
After scoring: open the scene pack, peer scores, and the matching pathway. Local reference — no HIS write.
- Who it is for
- Adults with suspected infection when deciding whether to treat this hour as sepsis.
- Who it is not for
- Stable patients scored only to fill a number. Children do not follow adult bundle dosing.
- Formula and variables
- qSOFA is respiratory rate, systolic pressure, and mentation. NEWS2 is respiration, oxygenation, supplemental oxygen, blood pressure, pulse, consciousness, and temperature. SOFA is six organ systems. MEWS stays off the main door. Weights stay as on this page. qSOFA is not a diagnosis.
- Result → next step
- A positive screen only escalates assessment. Next page is the sepsis bundle. qSOFA alone must not switch on antibiotics. Antimicrobials stay at drug-class direction; the spectrum page may be opened. No numeric dose here.Sepsis bundle →
- Guideline
- SSC 2021
Paste the link in Slack, Teams, X, or LinkedIn — the preview image comes from this page’s Open Graph card.
Methodology · worked example, guidelines & full notes
A score ≥ 5, or any single parameter scoring 3, usually triggers escalation.
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
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 | 81–100 |
|---|---|
| Heart rate | 51–100 |
| Respiratory rate | 15–20 |
| Temperature | 35–38.4 °C |
| AVPU | Voice |
→MEWS3
- Interpretation：3–4 — increased risk; increase monitoring
- Note：A score ≥ 5 (or any single parameter scoring 3) is commonly used as a trigger for rapid-response review.
| 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.
Verification & sources · governance
FAQ
Frequently asked questions
- 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.
- Does Modified Early Warning Score (MEWS) 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 Modified Early Warning Score (MEWS) calculated in practice? Can you show a worked example?
- Inputs: Systolic BP 81–100, Heart rate 51–100, Respiratory rate 15–20, Temperature 35–38.4 °C, AVPU Voice → Result: MEWS 3（Interpretation: 3–4 — increased risk; increase monitoring, Note: A score ≥ 5 (or any single parameter scoring 3) is commonly used as a trigger for rapid-response review.） 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.）