Session 2 - Group Work Flashcards Preview

Semester 5 - CNS > Session 2 - Group Work > Flashcards

Flashcards in Session 2 - Group Work Deck (8)
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1

? What are the normal consituents of CSF

<5 lymphocytes
0.15 - 0.45g/l - protein
glucose - 2.8 - 4.2 (60-80% normal)
no organisms
Clear and colourless

2

Give meningitis CSF

90 - 1000 polymorphs
>1.5g - protein (exudate)
ve streptococcus)
Cloudy and turbid

3

Viral meninigitis

50 - 1000 mononuclear
1/2 plasma glucose
No organisms
Usually clear

4

Tuberculous meningitis

10 - 1000 mononuclear
1-5g/l protein
<1/2 plasma glucose
often no organisms seen on smear
Fibrin web

5

What is a communicating hydrocephalus?

Problem lies outside of ventricular system - There is communication between the ventricles and subarachnoid space.

6

Give two causes of communicating hydrocephalus

Reduced reabsorption by dural venous sinuses (thickening of meninges due to infection/subarachnoid haemorrhage)
Increased production (Choroid plexus papilloma)

7

What is a non-communicating hydrocephalus?

Flow of ventricles to sub arachnoid space impinged

8

Give two causes of non-communicating hydrocephalus

Intraventricular haematoma
Pituitary adenoma