RACE scale (Rapid Arterial oCclusion Evaluation)
Prehospital large vessel occlusion screen.
Inputs
CompleteFacial palsy
Arm motor function
Leg motor function
Head and gaze deviation
Aphasia (right weakness) or agnosia (left weakness)
Worked calculation
Your values are highlighted.
- Points
When to use
- Suspected stroke before transport decisions.
Pearls and pitfalls
- 5 or higher suggests LVO (sensitivity 85%, specificity 68%).
- Score aphasia with right-sided weakness, agnosia with left-sided weakness.
Why use
Supports direct transport to a thrombectomy center.
| Criterion | Points |
|---|---|
| Facial palsy: Absent | 0 |
| Mild | +1 |
| Moderate to severe | +2 |
| Arm motor function: Normal to mild | 0 |
| Moderate | +1 |
| Severe | +2 |
| Leg motor function: Normal to mild | 0 |
| Moderate | +1 |
| Severe | +2 |
| Head and gaze deviation: Absent | 0 |
| Present | +1 |
| Aphasia (right weakness) or agnosia (left weakness): Normal | 0 |
| Mild to moderate | +1 |
| Severe | +2 |