Term
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Definition
1. Overproduction of CSF
2. Obstruction of CSF flow
3. Under absorption of CSF into the blood stream
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Term
| What is the total volume of CSF in the ventriclular system? |
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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) |
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Term
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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
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Term
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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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