Table 2.

Clinical Stroke Subtypes.

Subtype A

Small Infarction Volume (little or no infarction expansion, volume < 70 mL) [13–15]

Good Outcome [13, 16]

Low Mortality (<8%) [11, 17, 18]

Occurrence: 1.4–6.3% of all LVO patients

Subtype B

Large Infarction Volume (infarction expansion after recanalization, volume > 70 mL) with Severe Brain Edema and/or Hemorrhage

Poor Outcome (up to 50% of surviving patients have major disability) [19]

Very High Mortality (up to 80%) [19]

Occurrence: 0.5–2.7% of all LVO patients

Subtype C

Large Infarction Volume (infarction expansion after recanalization, volume > 70 mL); No Life-Threatening Brain Edema or Hemorrhage

Poor Outcome

Moderate Mortality (9–25%) [11, 17, 19, 21, 22]

Occurrence: 0.6–2.3% of all LVO patients