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Flashcards in Papilloedema Deck (10)
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1

Define papilloedema

Swollen optic disc secondary to raised intracranial pressure

2

Raised intracranial pressure is a medical emergency. True/False?

True

3

What must be ruled out in patients with bilateral swollen optic discs?

Raised intracranial pressure due to space-occupying lesion

4

What does an examination of cranial nerve II comprise of?

Ophthalmoscopy
Visual acuity
Visual field assessment
Pupillary response
Colour vision

5

What is the pathophysiology behind true papilloedema?

Subarachnoid space surrounding brain is continuous with subarachnoid space surrounding optic nerve
When ICP increases, this is transmitted to the nerve, causing swollen discs

6

What 3 components contribute to intracranial pressure?

Brain
CSF
Blood

7

How does a patient die from raised ICP as a result of increased brain size?

Brain squeezes through foramen magnum and compresses brainstem, inhibiting respiratory centre - patient can't breathe and dies

8

The brain is very tolerant of hypo/hyper -perfusion. True/False?

False
Needs constant blood supply over range of pressures

9

What factors relating to CSF contribute to raised ICP?

Obstruction to CSF circulation
Overproduction of CSF
Inadequate absorption of CSF

10

If a CT is normal following suspected raised ICP, what is done?

Lumbar puncture to assess CSF