ABCD2 score

Stroke risk after TIA

Scoring system

Age ≥ 60 years: 1 point
Blood pressure systolic ≥ 140mmHg or diastolic ≥ 90mmHg: 1 point
Clinical features of TIA (choose one):
  • Unilateral weakness with or without speech impairment: 2 points; or
  • Speech impairment without unilateral weakness: 1 point
    • Duration
  • TIA duration \u2265 60 minutes: 2 points
  • TIA duration 10-59 minutes: 1 point
    • Diabetes: 1 point

    Interpretation

  • Score 0 - 3: 2-day stroke risk is 1.0%. Hospital observation may be unnecessary without another indication (e.g. new atrial fibrillation)
  • Score 4 - 5: 2-day stroke risk is 4.1%. Hospital observation is justified in most situations
  • Score 6 - 7: 2-day stroke risk is 8.1%. Hospital observation is worthwile

    • Reference

    http://www.stroke.org/site/DocServer/NSA_ABCD2_tool.pdf