Johnston et al reported the California risk score for predicting the risk of a stroke following a TIA. This is a precursor of the ABCD2 score. The authors are from the University of California San Francisco.
Patient selection: TIA in the Emergency Department
Parameters:
(1) age in years
(2) diabetes
(3) unilateral weakness
(4) speech impairment
(5) duration of symptoms in minutes
Parameter
Finding
Points
age in years
< 60 years
0
>= 60 years
1
diabetes
no
0
yes
1
unilateral weakness
no
0
yes
1
speech impairment
no
0
yes
1
duration of symptoms
<= 10 minutes
0
> 10 minutes
1
total score =
= SUM(points for all of the parameters)
Interpretation:
• minimum score: 0
• maximum score: 5
Score
90-Day Risk of Stroke
0
0%
5
34%
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