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22 Cards in this Set
- Front
- Back
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What is cerebrovascular accident also known as?
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Stroke
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What is the purpose of the cerebral blood vessels?
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To provide oxygen and glucose to neuronal tissue
To remove toxic waste |
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What causes stroke?
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Disease that impairs the cerebral blood vessels
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What are the two main types of stroke?
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Haemorrhagic: bleeding from a blood vessel
Occlusive: closure of a blood vessel |
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How often does Haemorrhagic stroke occur?
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20% of all strokes
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What is the likely hood of a patient dying from Haemorrhagic stroke?
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~60% of patients die within 12 months
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How many types of haemorrhage strokes are there?
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2 types
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What types of haemorrhagic strokes are there?
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Subarachnoid haemorrhage
Intracerebral Haemorrhage |
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What is intracerebral haemorrhage?
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It is when the blood escapes directly into the brain tissue and destroys localised brain tissue
Causes relatively localised neuronal damage Nature of cognitive impairment depends on region of brain affected |
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What is parenchyma?
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The functional tissue of an organ as distinguised from the connective and supproting tissue
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What is subarachnoid Haemorrhage?
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It is when blood bursts from a blood vessel into the subarachnoid space and has no direct contact with neuronal tissue.
It essentially squashes the brain Results in diffusive damage to the whole brain Cognitive impairment is generalised, with dampening of all systems including intellect. |
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What is the cognitive impairment of intracerebral haemorrahage?
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Nature of impairment depends on area of brain affected
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What is the cognitive impairment of subarachnoid haemorrhage?
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Generalised impiarment of brain, with dempening of all systems including intellect.
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What is the most common type of stroke?
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Occlusive stroke
80% of all strokes |
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How does occlusive stroke occur?
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It occurs when there is a closure of a blood vessel
It causes losss of blood supply to the surrounding tissue If loss of blood supply occurs for long enough then infarction results. i.e. death of neuronal tissue. |
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What is ischaemia?
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The loss of blood supply tosurrounding tissue
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What is infarction?
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Death of neuronal tissue
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Ho many types of occlusive strokes are there?
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2
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What are the types of occlusive stroke?
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Cerebral thrombis
Cerebral Embolism |
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What is cerebral thrombosis?
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A type of occlusive stroke
Local narrowing of a blood vessel Most commonly due to atherosclerosis i.e. the deposition of plaques pf fatty material along the inner walls of the vessel. |
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What is cerebral embolism?
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Fragments of fatty tissue from larger vesseld that break off and become lodged in narrower arteries such as blood vessels.
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What is atherosclerosis?
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The accumulation of fatty tissues on the blood vessel inner walls
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