Stroke risk stratification algorithm

From Ganfyd

After NICE June 2006 atrial fibrillation guidelines

• Stratify patients with paroxysmal, persistent or permanent AF as:
  • High risk
    • Previous ischaemic stroke/TIA or thromboembolic event
    • Age ≥75 with hypertension, diabetes or vascular disease
    • Clinical evidence of valve disease, heart failure, or impaired LV function on echocardiography
  • Moderate risk
    • Age ≥65 with no high risk factors
    • Age <75 with hypertension, diabetes or vascular disease
  • Low risk
    • Age <65 with no moderate or high risk factors
• Treat
  • High risk
    • Anticoagulation with warfarin to target INR 2.5 (range 2.0 to 3.0) unless contraindications
  • Moderate risk
    • Consider anticoagulation (as above) or aspirin (as below)
  • Low risk
    • Aspirin 75 to 300 mg/day unless contraindications