The ABCD2-I score is an extension of the ABCD2 score for predicting the risk of stroke in a patient with a history of transient ischemic attack (TIA). This includes information found on imaging studies.
Patient selection: transient ischemic attack (TIA)
Outcome: near-term stroke
Parameters from the ABCD2:
(1) age in years
(2) blood pressure in mm Hg
(3) clinical features
(4) duration of symptoms in minutes
(5) diabetes
Parameter
Finding
Points
age in years
< 60 years of age
0
>= 60 years of age
1
blood pressure in mm Hg
< 140/90 mm Hg
0
>= 140/90 mm Hg
1
clinical findings
normal
0
speech impairment without weakness
1
unilateral weakness
2
duration of symptoms
< 10 minutes
0
10 - 59 minutes
1
>= 60 minutes
2
diabetes mellitus
absent
0
present
1
Additional parameters:
(6) evidence of infarction on imaging studies
Parameter
Finding
Points
infarction on imaging studies
absent
0
present
3
total score =
= SUM(points for all 6 parameters)
Interpretation:
• minimum score: 0
• maximum score: 10
• The higher the score the greater the risk of stroke.
• A patient in the high risk group should undergo immediate evaluation and initiation of stroke preventive measures.
Total Score
Risk Group
Risk of Stroke in 2 Days
Risk of Stroke in 7 Days
0 to 3
low
trace
0.7%
4 or 7
moderate
2%
2.9%
8 to 10
high
3.4%
5.6%
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