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ABCD2 Score for Transient Ischemic Attack (TIA)

A simple score (ABCD2) to identify individuals at high early risk of stroke after transient ischemic attack.

  • A (Age); 1 point for age >60 years,

  • B (Blood pressure > 140/90 mmHg); 1 point for hypertension at the acute evaluation,

  • C (Clinical features); 2 points for unilateral weakness, 1 for speech disturbance without weakness, and

  • D (symptom Duration); 1 point for 10–59 minutes, 2 points for >60 minutes.

  • D (Diabetes); 1 point

Total scores ranged from 0 (lowest risk) to 7 (highest risk).

 

Stroke risk at 2 days, 7 days, and 90 days:

  • Scores 0-3: low risk  

  • Scores 4-5: moderate risk

  • Scores 6-7: high risk

 

References:

  1. Johnston SC, Rothwell PM, Nguyen-Huynh MN, Giles MF, Elkins JS, Bernstein AL, Sidney S. Validation and refinement of scores to predict very early stroke risk after transient ischaemic attack. Lancet. 2007 Jan 27;369(9558):283-92.  [Medline]

  2. Rothwell PM, Giles MF, Flossmann E, Lovelock CE, Redgrave JN, Warlow CP, Mehta Z. A simple score (ABCD) to identify individuals at high early risk of stroke after transient ischaemic attack. Lancet. 2005 Jul 2-8;366(9479):29-36.  [Medline]

Created: Feb 14, 2007
Last Modified: 02/15/2007