Stroke scales are standardized tools used to assess various aspects of stroke, including severity, functional status, prognosis, and treatment eligibility.

• Purpose: Quantifies neurological deficit in acute stroke.
• Range: 0–42
• Interpretation:
  • 0 = No stroke symptoms
  • 1–4 = Minor stroke
  • 5–15 = Moderate stroke
  • 16–20 = Moderate to severe stroke
  • 21–42 = Severe stroke
• Use: Inclusion/exclusion in thrombolysis and thrombectomy trials.

• Purpose: Measures degree of disability or dependence after stroke.
• Range: 0–6
• Interpretation:
  • 0 = No symptoms
  • 1 = No significant disability despite symptoms
  • 2 = Slight disability
  • 3 = Moderate disability
  • 4 = Moderately severe disability
  • 5 = Severe disability
  • 6 = Death
• Use: Common endpoint in stroke trials.

• Purpose: Assesses level of consciousness.
• Range: 3–15
• Components: Eye (4), Verbal (5), Motor (6)
• Use: Useful in hemorrhagic stroke or coma.

• Purpose: Quantifies early ischemic changes on non-contrast head CT.
• Range: 0–10
• Lower score = More extensive ischemia
• Use: Selection for thrombectomy (particularly in anterior circulation).

• Purpose: Grades reperfusion after thrombectomy.
• Range:
  • 0 = No perfusion
  • 1 = Minimal
  • 2a = Partial (<50%)
  • 2b = Substantial (>50%)
  • 2c = Near complete
  • 3 = Complete
• Use: Angiographic outcome measurement.

• Purpose: Measures functional independence in activities of daily living (ADLs).
• Range: 0–100
• Use: Rehab planning and long-term prognosis.

• Purpose: Predicts risk of stroke after TIA.
• Factors: Age, BP, Clinical features, Duration, Diabetes
• Range: 0–7
• Risk stratification:
  • 0–3 = Low
  • 4–5 = Moderate
  • 6–7 = High

• Purpose: Estimates risk/benefit from thrombolysis in elderly.
• Calculation: Age + NIHSS
• SPAN-100 positive = total ≥100 → high risk of sICH (symptomatic ICH)

• Purpose: Predicts 30-day mortality in intracerebral hemorrhage.
• Factors: GCS, ICH volume, age, location, IVH
• Range: 0–6

• Purpose: Etiological classification of ischemic stroke.
• Categories:
  • Large-artery atherosclerosis
  • Cardioembolism
  • Small vessel occlusion (lacune)
  • Other determined etiology
  • Undetermined etiology