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Chapter
Lower Breakpoint of Intracranial Amplitude-Pressure Relationship in Normal Pressure Hydrocephalus
The relationship between intracranial pulse amplitude (AMP) and mean intracranial pressure (ICP) has been previously described. Generally, AMP increases proportionally to rises in ICP. However, at low ICP a lo...
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Chapter
External Hydrocephalus After Traumatic Brain Injury: Retrospective Study of 102 Patients
Introduction: External hydrocephalus (EH) refers to impairment of extra-axial cerebrospinal fluid flow with enlargement of the subarachnoid space (SAS) and concomitant raised intracranial pressure (ICP). It is o...
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Chapter
Global Cerebral Autoregulation, Resistance to Cerebrospinal Fluid Outflow and Cerebrovascular Burden in Normal Pressure Hydrocephalus
Introduction: We previously examined the relationship between global autoregulation pressure reactivity index (PRx), mean arterial blood pressure (ABP), Resistance to cerebral spinal fluid (CSF) outflow (Rout) a...
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Chapter
The Role of Cerebrospinal Fluid Dynamics in Normal Pressure Hydrocephalus Diagnosis and Shunt Prognostication
Background: Over the years, there have been several reports and trials of the resistance to cerebrospinal fluid (CSF) outflow (Rout) in normal pressure hydrocephalus (NPH). This work aimed to revisit the utility...
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Chapter
Analysis of Intracranial Pressure Pulse–Pressure Relationship: Experimental Validation
The slope of linear relationship between the amplitude of pulsations in intracranial pressure (ICP) versus mean ICP has recently been suggested as a useful guide for selecting patients for shunt surgery in nor...
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Chapter
Single Center Experience in Cerebrospinal Fluid Dynamics Testing
Normal pressure hydrocephalus is more complex than a simple disturbance of the cerebrospinal fluid (CSF) circulation. Nevertheless, an assessment of CSF dynamics is key to making decisions about shunt insertio...
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Chapter
Differences in Cerebrospinal Fluid Dynamics in Posttraumatic Hydrocephalus Versus Atrophy, Including Effect of Decompression and Cranioplasty
Introduction: Challenges in diagnosing post-traumatic hydrocephalus (PTH) have created a need for an accurate diagnostic tool. We aim to report CSF dynamics in PTH and atrophy, along with differences before and ...
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Chapter
Comparison of Assessment for Shunting with Infusion Studies Versus Extended Lumbar Drainage in Suspected Normal Pressure Hydrocephalus
Introduction: Tools available for diagnosis of normal pressure hydrocephalus (NPH) and prediction of shunt-response are overnight ICP monitoring, infusion studies, and extended lumbar drainage (ELD). We investig...
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Article
Correlation between the total number of features of paediatric pseudotumour cerebri syndrome and cerebrospinal fluid pressure
Accurate diagnosis of pseudotumour cerebri syndrome (PTCS) in children is challenging. We aimed to see if the clinical and radiological assessment that is carried out before lumbar puncture could predict subse...
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Article
Open AccessCoupling of CSF and sagittal sinus pressure in adult patients with pseudotumour cerebri
Pseudotumour cerebri syndrome (PTCS including idiopathic intracranial hypertension) is characterised by the symptoms and signs of raised cerebrospinal fluid pressure (CSFp) in the absence of ventricular dilata...
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Article
Open AccessCerebrospinal fluid dynamics in pediatric pseudotumor cerebri syndrome
There is a growing body of evidence highlighting the importance of comprehensive intracranial pressure (ICP) values in pseudotumor cerebri syndrome (PTCS). Due to the highly dynamic nature of ICP, several meth...
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Living Reference Work Entry In depth
Cerebrospinal Fluid Pressure Dynamics
Although hydrocephalus is much more than CSF dynamics disorder, components of disturbed CSF circulation and volume-pressure compensation are omnipotent in almost all types of this disease. CSF infusion test or...
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Reference Work Entry In depth
Cerebrospinal Fluid Pressure Dynamics
Although hydrocephalus is much more than CSF dynamics disorder, components of disturbed CSF circulation and volume-pressure compensation are omnipotent in almost all types of this disease. CSF infusion test or...
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Article
Brain pulsations enlightened
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Article
Overdrainage of cerebrospinal fluid and hydrocephalus shunts
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Chapter
Shunt Testing In Vivo: Observational Study of Problems with Ventricular Catheter
Most shunt obstructions happen at the inlet of the ventricular catheter. Three hundred six infusion studies from 2007 to 2011 were classified as having a typical pattern of either proximal occlusion or patency...
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Chapter
Waveform Analysis of Intraspinal Pressure After Traumatic Spinal Cord Injury: An Observational Study (O-64)
Following a traumatic brain injury (TBI), intracranial pressure (ICP) increases, often resulting in secondary brain insults. After a spinal cord injury, here the cord may be swollen, leading to a local increas...
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Article
Open AccessInvestigation of the hydrodynamic properties of a new MRI-resistant programmable hydrocephalus shunt
The Polaris valve is a newly released hydrocephalus shunt that is designed to drain cerebrospinal fluid (CSF) from the brain ventricles or lumbar CSF space. The aim of this study was to bench test the properti...
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Article
Open AccessIn vitro hydrodynamic properties of the Miethke proGAV hydrocephalus shunt
Adjustable shunts are very popular in the management of hydrocephalus and are believed to help in minimizing the number of surgical revisions. The drawback with almost all constructions is that they may be acc...
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Chapter
Cerebrospinal Fluid Dynamics
Historically, the saga of cerebrospinal fluid (CSF) dynamics almost always starts with the Monro-Kellie doctrine. This states that the sum of volumes of brain, blood and CSF (although in the time of Kellie, i....
