Flashcards in C: Brain imaging Deck (19)
What kind of imaging is used in strokes and why?
Usually CT due to higher availability and speed
Done to exclude haemorrhage and prove ischaemic stroke
What is a lacunar stroke?
Stroke which affects a smaller area - hand and arm affected rather than full hemiparesis
What are the 6 symptoms of cerebellar infract, are they ipsilateral or contralateral? (DANISH)
2) Ataxia - loss of control of bodily movements
4) Intention tremor
5) Slurred speech
6) Hypotonia - low muscle tone
What would be the main symptoms of a large right sided infarct due to MCA blockage? 4
1) Aphasia - loss of speech
2) Inattention - right side to do with spatial awareness
3) Left sided hemiparesis and hemiarthresia
4) L homogenous hemianopia - loss of left visual field
What would be the clinical presentation of a left cerebellar infarct? 2
If a patient has a internal carotid artery blockage what is the likely prognosis and GCS score?
Very low GCS score
Death is highly likely
What are 2 risk factors for bleeding in the basal ganglia region?
1) Anti coagulants eg. warfarin
2) Bleeding disorders
What 3 symptoms does a subarachnoid haemorrhage present with?
1) Thunderclap headache - horrendous headache, blood irritates the meninges
3) Low GCS
What artery is commonly ruptures in extradural haemorrhage?
Middle meningeal artery
How is an extradural haemorrhage treated?
With burr hole surgery
What is the common clinical presentation of an extradural haemorrhage?
Trauma followed by a lucid interval (temporary improvement in patients condition) followed by a loss of conciousness
What is a contre-coup injury?
Get soft tissue injury on one side, hit to that side causes brain to hit opposite side of skull and get bleed on other side of the brain
Subdural haemorrhage is usually caused by what?
Tearing of bridging veins which cross the subdural space
How does a subdural haemorrhage present?
Gradual increase in headache and confusion
Give 3 risk factors for subdural haemorrhage?
If a patient presented with changes in personality and disinhibition, where is the lesion most likely to be?
In the frontal cortex
Infarction of the midbrain would cause what syndrome?
Locked in syndrome
Why is vision and hearing unaffected in a midbrain infarct?
Because CN1 and CN2 come off the brain above the brainstem