Flashcards in Papilloedema Deck (10)
Swollen optic disc secondary to raised intracranial pressure
Raised intracranial pressure is a medical emergency. True/False?
What must be ruled out in patients with bilateral swollen optic discs?
Raised intracranial pressure due to space-occupying lesion
What does an examination of cranial nerve II comprise of?
Visual field assessment
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
What 3 components contribute to intracranial pressure?
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
The brain is very tolerant of hypo/hyper -perfusion. True/False?
Needs constant blood supply over range of pressures
What factors relating to CSF contribute to raised ICP?
Obstruction to CSF circulation
Overproduction of CSF
Inadequate absorption of CSF