Large artery atherosclerosis |
Large artery atherosclerosis |
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Atherosclerotic lesion causing greater than 50% stenosis |
Cardioembolism |
Cardioembolism |
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Divided into high-risk and medium-risk sources based on their relative potential to cause stroke |
Stroke of other determined etiology |
Stroke of other determined etiology |
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Rare causes such as non-atherosclerotic vasculopathies, hematologic disorders, or hypercoagulable states |
Stroke of undetermined etiology |
Stroke of undetermined etiology |
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Including, a. Two or more causes, b. Negative evaluation (unknown), c. Incomplete evaluation |
Small artery occlusion |
Small artery occlusion |
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Lacunar syndrome with or without evidence of ischemic lesion less than 1.5 cm in diameter in the brain stem or subcortical white matter |