Medical Definition of ischemic stroke
: stroke caused by the narrowing or blockage of a blood vessel supplying the brain ◆Ischemic stroke is the most common type of stroke. Obstruction of a blood vessel supplying the brain results either from a clot that has traveled in the blood from another part of the body (embolism) or from a clot that has formed in place (thrombus). —compare hemorrhagic stroke
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