Venous Drainage & CSF (Mixed)

Question 1

Describe noncommunicating hydrocephalus

Answer 1

Often due to a blocked cerebral aqueduct

The ventricles dilates, increase intracranial pressure and flattening the gyri agains the skull

In children their head may enlarge

Question 2

Describe communicating hydrocephalus

Answer 2

NOT due to a blockage, rather due to a thickening of the arachnoid space from trauma/infection with reduced absorptoin

If the pressure increase the spinal canal may enlarge

Question 3

Describe normal pressure hydrocephalus

Answer 3

When the CSF pressure doesn’t increase but too much is present

This often occurs in the elderly and can affect gain as well as cause incontinence and dementia