Flashcards in Session 2 - Group Work Deck (8)
? What are the normal consituents of CSF
0.15 - 0.45g/l - protein
glucose - 2.8 - 4.2 (60-80% normal)
Clear and colourless
Give meningitis CSF
90 - 1000 polymorphs
>1.5g - protein (exudate)
Cloudy and turbid
50 - 1000 mononuclear
1/2 plasma glucose
10 - 1000 mononuclear
<1/2 plasma glucose
often no organisms seen on smear
What is a communicating hydrocephalus?
Problem lies outside of ventricular system - There is communication between the ventricles and subarachnoid space.
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)
What is a non-communicating hydrocephalus?
Flow of ventricles to sub arachnoid space impinged