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Stroke Risk Calculator after TIA

This tool can predict a patient's stroke risk 90 days after a Transient Ischemic Attack (TIA).

Risk Factor

Age

> 60 years (1 point)
< 60 years (0 points)

Blood pressure

Systolic BP > 140mm Hg, or
Diastolic BP > 90 mm Hg (1 point)

Systolic BP < 140 mm Hg, or
Diastolic BP < 90 mm Hg (0 points)

Clinical features of TIA

Unilateral weakness with or without speech impairment (2 points)
Speech impairment without unilateral weakness (1 point)

Duration

TIA duration > 60 minutes (2 points)
TIA duration 10-50 minutes (1 point)

Diabetes

Yes (1 point)
No (0 points)

Total ABCD score and 90 day stroke risk assessment after a TIA.

ABCD Score 90-day stroke risk
   
   
   
   
   
   
   

1
2 4%
3 4%
4 10%
5 14%
6 18%
7 22%

References

Johnston SC, Rothwell PM, Nguyen-Huynh MN, et al. Validation and refinement of scores to predict very early stroke risk after transient ischemic attack. Lancet 2007;369:283-292.

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