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Epidural Intracranial Pressure Measurement in Rats Using a Fiber-optic Pressure Transducer
Published on: April 25, 2012
Manometry combined with cervical puncture in idiopathic intracranial hypertension
J O King1, P J Mitchell, K R Thomson
1Department of Neurology, Royal Melbourne Hospital, Victoria, Australia. jking@bigpond.net.au
Objective:
To determine by cerebral venography and manometry in patients with idiopathic intracranial hypertension the cause of the previously demonstrated venous hypertension in the superior sagittal and proximal transverse sinuses.
Methods:
Cerebral venous sinus pressure was measured before and immediately after C1-2 puncture with removal of 20 to 25 mL of CSF.
Results:
Lowering the intracranial pressure by lateral C1-2 puncture during manometry has shown that the venous hypertension resolves immediately.
Conclusion:
These studies indicate that the venous hypertension is due to compression of the transverse sinuses by raised intracranial pressure and not due to a primary obstructive process in the cerebral venous sinuses.
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