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ABCD2 algorithm for risk of stroke following TIA

Last reviewed dd mmm yyyy. Last edited dd mmm yyyy

Authoring team

ABCD2 algorithm(1) predicts a patient's very early risk of stroke following a TIA.

The score is calculated according to 5 important clinical features:

Symbol

Clinical feature

Criterion

Point

A

Age

>= 60

1

B

Blood pressure

>= 140/90 mmHg

1

C

Clinical features of the TIA

unilateral weakness

2

speech disturbance without weakness

1

D1

Duration of symptoms

>= 60 min

2

10-59 min

1

<10 min

0

D2

Diabetes

diagnosed with diabetes?

1

The corresponding 2 day risks for a subsequent stroke are:

ABCD2 score

Risk of stoke at 2 days

0-3

1%

4-5

4%

6-7

8%

 

Reference:


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