Los Angeles Motor Scale (LAMS)
Prehospital screen for large vessel occlusion stroke.
Inputs
CompleteFacial droop
Arm drift
Grip strength
Worked calculation
Your values are highlighted.
- Points
When to use
- Prehospital or ED stroke triage.
Pearls and pitfalls
- 4 or higher suggests large vessel occlusion; consider a thrombectomy-capable center.
Why use
Three items, under a minute.
| Criterion | Points |
|---|---|
| Facial droop: Absent | 0 |
| Present | +1 |
| Arm drift: Absent | 0 |
| Drifts down | +1 |
| Falls rapidly | +2 |
| Grip strength: Normal | 0 |
| Weak grip | +1 |
| No grip | +2 |