Hydrocephalus Flashcards
hydrocephalus
excess CSF within the intracranial space
causes dilatation of the ventricles and various other symptoms
CSF volume turns over how often?
3 - 4 times a day
CSF travels from lateral ventricle to the
3rd ventricle
to cerebral aqueduct
to the 4th ventricle
exits and flows through the subarachnoid space over and around the brain and spinal cord
CSF is eventually absorbed through the
venous sinuses
arachnoid villi!
communicating hydrocephalus is also known as
non-obstructive hydrocephalus
non-communicating hydrocephalus is also known as
obstructive hydrocephalus
communicating (non-obstructive hydrocephalus) is usually caused by:
problems with resorption
too much production of CSF not enough resorption
what happens to intracranial pressure in communicating hydrocephalus?
raised
what is the common finding in a radiograph of hydrocephalus
dilation of the temporal horns of the lateral ventricles
EVD comes with a high risk of
infection
EVD
external ventricular drain
what is one of the rare, preventable causes of dementia?
normal pressure hydrocephalus
lumbar puncture can be used to diagnose
meningitis
meningoencephalitis
subarachnoid haemorrhage
malignancy
infusions or drugs etc
contraindications for using a lumber puncture
reasons not to
cardio or resp issues
infection of skin over area
evidence of unstable bleeding disorder
increased intracranial pressure
lumbar puncture is usually at what level
L3-L4
spinal cord ends at L1-L2
