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Congenital Neurosurgical Disease
Commonest Congenital Neurosurgical Diseases - Surgery
4
Medical
Undergraduate 4
03/31/2012

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Cards

Term
Causes of Hydrocephalus 
Definition

 

1. Overproduction of CSF
2. Obstruction of CSF flow
3. Under absorption of CSF into the blood stream

 

Term
What is the total volume of CSF in the ventriclular system?
Definition

Total volume of CSF in the ventricles varies from 5-15 ml in neonates to 150 ml in adults

Rate of production = 0.3-0.4 ml/minute = 500 ml/day 

150 in ventricular system

350 absorbed back into circulation by arachnoid granulations (villi) 

Term
Types of Hydrocephalus
Definition
  • Communicating
    • Overproduction or under absorption of CSF
  • Non-communicating
    • Obstruction to the CSF flow at the foramen of Monro, the third ventricle, the aqueduct of Sylvius, the fourth ventricle, or the foramina of Magendie or Luschka
Term
Congenital Hydrocephalus
Definition
  • Aqueductal anomalies
  • Dandy-Walker malformation
  • Chiari II malformation
  • Vein of Galen aneurysms
  • Myelomeningocele
  • Intrauterine viral infections (CMV, mumps, rubella, varicella)
  • Toxoplasmosis
  • Congenital Tumors
  • Idiopathic
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