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Cerebral Embolism Formation
Formation
In addition to thrombotic occlusion
at the site of cerebral artery atherosclerosis, ischemic infarction
can be produced by emboli arising from proximally situated
atheromatus lesions to vessels located more distal in the
arterial tree [Mohr JP, Sacco RL. In: Barnett HJM, et al (eds).
Stroke. Pathophysiology, Diagnosis, and Management. New York:
Churchill Livingstone, 1992:271].
A small clot may break off from
a larger thrombus and be carried to other places in the bloodstream.
When the embolus reaches an artery too narrow to pass through
and becomes lodged, blood flow distal to the fragment ceases,
resulting in infarction of distal brain tissue due to lack
of nutrients and oxygen.
As a cause of stroke, embolism
accounts for approximately 32% of cases.
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Stroke Education
