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9 Cards in this Set
- Front
- Back
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Why may CVAs cause seizures?
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CVAs cause seizures due to SCARRING.
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CVA's in which hemisphere are more commonly associated with depression?
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CVA's in the RIGHT hemisphere are more commonly associated with depression.
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Why may pts. show worsening deficits or decreased consciousness in the days following a CVA?
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Due to cerebral EDEMA (or occasionally from extension of the infarct.
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Name one important impact severe cerebral edema may have upon the brain.
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It may cause a SHIFT IN INTRACRANIAL STRUCTURES; this can be fatal.
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What is Locked-in syndrome?
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This can follow from CVA's in particular areas, leading a person to be quadriplegic and mute. Has control of eye movements, normal cognition.
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A CVA in what region is most commonly associated with Locked-in syndrome?
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The inferior portion of the pons or medulla.
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What are anastomes?
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Anastomes are connections b/w different cerebral areas on the cortical surface.
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What is the main signficance of anastomes?
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Anastomes allow perfusion b/w arterial systems, limiting the extent of cortical damage in stroke.
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What are watershed areas, and what is there relevance with respect to CVA's?
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Watershed areas are zones that connect arteries; they are vulnerable to reduced blood flow because they are the most distal portions of the blood supply.
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