Toast classification in acute ischemic stroke

Last revised by Jeremy Jones on 27 Jul 2022

The TOAST (trial of ORG 10172 in acute stroke treatment) classification denotes five sub types of ischemic stroke.

  • large-artery atherosclerosis (embolus / thrombosis)*
  • cardioembolism (high-risk / medium-risk)*
  • small-vessel occlusion (lacune)*
  • stroke of other determined etiology *
  • stroke of undetermined etiology

It is thought to carry good inter observer agreement and predict prognosis, outcome, and management

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