Neuroanatomy, cerebral aneurysm and stroke Flashcards
what are the main arteries in the brain
R and L - internal carotid
R and L - vertebral arteries
Basilar arteries
R and L - anterior cerebral arteries
R and L - middle cerebral arteries
R and L posterioir cerebral arteries
Anterior communicating artery
R and L posterior communicating artery
what is an aneurysm
an excessive localised swelling of the wall of an artery
what is the prevalence of aneurysms
2%
what is a subarachnoid haemorrhage
bleeding into the subarachnoid space - the area between the arachnoid membrane and the pia mater
how is a subarachnoid haemorrhage diagnosed
history and examination
unenhanced CT
exclusion by absence of blood products in the CSF (lumbar puncture)
what are common locations for aneurysms
intracranial aneurysms -from the branch points of the circle of willis
what is the treatment of a ruptured intracranial aneurysm
endovascular coil embolisation
surgical clippings
treat complications - e.g. hydrocephalus, vasospastic infarcts and disability
what does the right middle cerebral artery supply
left body strength
left body sensation
what does the left middle cerebral artery supply
right body strength
right body sensation and language
what does the right posterior cerebral artery supply
perception of left visual field
what does the left posterior cerebral artery supply
perception of the right visual field
what arteries supply the cerebellum
posterior inferior, anterior inferior, superior cerebellar arteries
what can cerebellar stroke cause
ataxia and or/nystagmus
what is another cause of acute cerebellar ataxia
alcohol intoxication
