Abstract
It has been postulated that cerebral venous outflow “obstruction” is a precipitating
factor for many cases of idiopathic intracranial hypertension (IIH). We describe a
17-year-old woman with IIH, and “venous obstruction” repeatedly demonstrated on magnetic
resonance venography (MRV) that within minutes resolved partially when the cerebrospinal
fluid (CSF) pressure was reduced to 11 cmH2O and completely when the pressure was reduced to 8 cmH2O. These findings further support the view that raised pressure is the cause of the
“obstruction”, rather than the obstruction being the primary cause of the IIH. It
also raises questions about how low the CSF pressure should be reduced at therapeutic
lumbar puncture.
Keywords
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Article info
Publication history
Accepted:
April 23,
2009
Received:
January 29,
2009
Identification
Copyright
© 2009 Elsevier Ltd. Published by Elsevier Inc. All rights reserved.
