The Los Angeles Motor Scale (LAMS) provides a prehospital assessment of stroke severity. The authors are from the University of California Los Angeles.
The components were included in the Los Angeles Prehospital Stroke Screen (LAPSS).
Parameters:
(1) facial droop
(2) arm drift
(3) grip strength
Parameter
Finding
Points
facial droop
absent
0
present
1
arm drift
absent
0
drifts down
1
falls rapidly
2
grip strength
normal
0
weak
1
none
2
total score =
= SUM(points for all 3 parameters)
Interpretation:
• minimum score: 0
• maximum score 5
• The higher the score the more severe the stroke.
• A score >= 4 was associated with an ischemic stroke associated with a large arterial occlusion.
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