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Cerebral Spinal Fluid

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-CSF formed by the choroid plexus within the lateral ventricle
-CSF volume ≅ 100 – 150 ml
-CSF reabsorbed and formed ≅ 4 times/day therefore q6hrs
-CSF reabsorption/formation rate ≅ 0.3 – 0.4 ml/min

Drugs which may inhibit the formation of CSF include:
-furosemide
-acetazolamide

Hydrocephalus may occur from:
-increased CSF production
-reduced reabsorption of CSF despite normal production