Idiopathic intracranial hypertension Flashcards

1
Q

Risk factors?

A

obese women of childbearing age.

meds ( retinoids, tetracyclines, growth hormone).

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2
Q

Clinical features?

A

headache, visual abnormalities (blurry vision, diplopia, vision loss, optic disk edema [enlarged blind spot]), pulsatile tinnitus, palsy of the abducens nerve ( CN VI) ( lateral rectus palsy), papilledema.

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3
Q

diagnosis?

A

neuroimaging.

lumbar puncture: elevated opening pressure.

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4
Q

treatment?

A

weight loss.

acetazolamide.

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5
Q

initial evaluation?

A

complete ocular examination and neuroimaging to exclude secondary causes of intracranial hypertension (ex: mass, hemorrhage). MRI, often with venography to rule out cerebral vein thrombosis, preferred imaging modality, however, CT is generally faster and easier to obtain in emergencies.

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6
Q

After a space occupying lesion is excluded, LP can be performed safely

A

and indicated to document elevated opening pressure (>250 mm H2O).

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7
Q

cerebrospinal fluids studies ( cell counts)

A

normal

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