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Flashcards in CSF/ CSF obstruction Deck (17):
1

Headache, papilledema, CN III palsy (pupil dilation, opthalmoplegia)

Hydrocephalus, either communicating or non-communicating--> symptoms the same

*CN III issues due to transtentorial (uncal) herniation

2

Difference between communicating an non-communicating hydrocephalus

Communicating--> decreased reabsorption of CSF by arachnoid granulations = increased ICP

Non-communicating--> structural blockage of CSF circ (stenosis of aqueduct of Sylvius, aka cerebral aqueduct)

3

Causes of communicating hydrocephalus (1)

Arachnoid scarring post-meningitis

4

*Triad of normal pressure hydrocephalus

1. urinary incontinence (wet)
2. ataxia (wacky)
3. cognitive impairment (wild)

5

Hydrocephalus ex vacuo

Appearance of increased CSF due to cerebral atrophy; intracranial pressure is NORMAL (so no symptoms)

6

3 causes of hydrocephalus ex vacuo

1. Alzheimer's
2. Pick's dz
3. advanced HIV

7

definition of pseudotumor cerebri

elevated ICP WITHOUT hydrocephalus

8

usual demographic of pt with psuedo tumor cerebri

young, obese women

9

Symptoms of pseudotumor cerebri

1. pulsatile HA, worse in morning
2. retroocular pain worsened by eye movement
3. Possible nausea/ vomiting

10

worrisome complication of pseudotumor cerebri

vision loss

11

1st step in possible psueudotumor cerebri pt

CT scan/ MRI to rule out other pathology--> no tumors or masses, absence of ventricular dilation

12

*What confirms pseudotumor cerebri

LP opening pressure of over 200 mmHg in normal pt; over 250 mmHg in obese

13

What three things can incite pseudotumor cerebri

1. Vitamin A (including food or isoretinoic topical)
2. Tetracyclines
3. Corticosteroid withdrawal

14

* First line medical tx for pseudotumor cerebri

Acetazolimide (diuretic to drop fluids)

*weight loss is the most effective, if obese

15

Where does CSF drain to from arachnoid granulations

superior sagittal sinus

16

Final draining spot in the dural venous sinuses

Sigmoid sinus--> goes from there into internal jugular vein in the carotid sheath (common carotid and vagus also there)

17

*7 contents of the cavernous sinus

1. CN III
2. CN IV
3. CN V1
4. CN V2
5. CN VI
6. postganglionic sympathetic fibers (headed to orbit)
7. Internal carotid artery

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