Reliability and Reproduceability of ICP Frequency Analysis

A method is described for monitoring the relationship between CSF pulse pressure and ICP in clinical patients. Highly significant linear relationships were found during 65 continuous ICP recordings in 58 patients. The slope value of this relationship showed a positive correlation with the elastance coefficient, a volume-pressure parameter assessed by bolus injection. However, the correlation was too weak to allow for a confident prediction of the elastance coefficient on the basis of CSF pulse pressure in the individual patient. This was attributed to the variable magnitude of the volume change underlying the CSF pulse pressure: the pulsatile variation in cerebral blood volume. This quantity was calculated on the basis of a mathematical model from the slope value and the elastance coefficient and was found to vary between 0.36 and 4.38 ml. During plateau waves a disproportionate increase in pulse pressure with the ICP was observed in contrast with a relative decrease in intracranial elastance. This phenomenon was ascribed to an increase in the pulsatile variation in cerebral blood volume. It is concluded that, under certain conditions, the intracranial volume-pressure relationship can be continuously monitored by means of CSF pulse pressure analysis. The findings during plateau waves suggest that the pulse pressure also reflects the state of the cerebral vasomotor tone.

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“…The relationship between CSFPP and ICP is given by Equation 6. Since we have plotted CSFPP against mean ICP the relationship may be rewritten as:…”

Section: Comparison Between Plotting Csf Pulse Pressure Against Mean mentioning

confidence: 99%

Clinical observations on the relationship between cerebrospinal fluid pulse pressure and intracranial pressure

Avezaat

Eijndhoven

1986

Acta neurochir

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The Influence of Dexamethasone Therapy in ICP in Patients with Tumors of the Posterior Fossa

Brock¹,

Zillig²,

Wiegand³

et al. 1976

Intracranial Pressure III

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Circadian Occurrence of Pathologic Cerebrospinal Fluid Pressure Waves in Patients With Brain Tumor

Brock¹,

Tamburus²,

Ribeiro³

et al. 1978

Advances in Neurosurgery

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Reliability and Reproduceability of ICP Frequency Analysis

Cited by 5 publications

References 10 publications

Clinical observations on the relationship between cerebrospinal fluid pulse pressure and intracranial pressure

Clinical observations on the relationship between cerebrospinal fluid pulse pressure and intracranial pressure

The Influence of Dexamethasone Therapy in ICP in Patients with Tumors of the Posterior Fossa

Circadian Occurrence of Pathologic Cerebrospinal Fluid Pressure Waves in Patients With Brain Tumor

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