Abstract
Ischemic stroke is the fifth leading cause of death and a major condition feared by older adults. Clinical identification of patients with cerebral ischemia is important to provide appropriate, immediate treatment and initiate stroke preventive strategies. This chapter presents an overview of the more common causes and mechanisms of stroke. Ischemic stroke has been classically defined as a fixed focal neurologic deficit attributable to an arterial or venous territory and lasting longer than 24 hours. Transient ischemic attack has been classically defined as a transient focal neurologic deficit attributable to an arterial territory lasting less than 24 hours.
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