Modified early warning score
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Modified early warning score (MEWS) is a simple guide used by emergency medical services to quickly determine the risk of death of a subject. It is based on data derived from four physiological readings (systolic blood pressure, heart rate, respiratory rate, body temperature) and one observation (level of consciousness, AVPU). The resulting observations are compared to a normal range to generate a single score as follows:
| Score | 3 | 2 | 1 | 0 | 1 | 2 | 3 |
|---|---|---|---|---|---|---|---|
| Systolic BP | <70 | 71-80 | 81-100 | 101-199 | — | >200 | — |
| Heart rate (BPM) | — | <40 | 41-50 | 51-100 | 101-110 | 111-129 | >130 |
| Respiratory rate (RPM) | — | <9 | — | 9-14 | 15-20 | 21-29 | >30 |
| Temperature (°C) | — | <35 | — | 35.0-38.4 | — | >38.5 | — |
| AVPU | — | — | — | A | V | P | U |
A score of five or more is clearly linked to increased likelihood of death and admission to a intensive care unit.
[edit] References
- Subbe C.P., Kruger M., Gemmel L. - "Validation of a modified Early Warning Score in medical admissions." Quarterly Journal of Medicine 2001; 94; 521-6.
