Related to Normal pressure:normal pressure hydrocephalus atmospheric pressure n. Pressure caused by the weight of the atmosphere. It has a mean value of one atmosphere at sea level but reduces with increasing altitude. Also calledbarometric pressure. ...
Borgesen SE (1984) Conductance to outflow of CSF in normal pressure hydrocephalus. Acta Neurochir (Wien) 71: 1–45Børgesen SE (1984) Conductance to outflow of CSF in normal pressure Hydrocephalus. Acta Neurochir (Wien) 71:1–15Borgesen, SE (1984) Conductance to outflow of CSF in ...
A total of 21 patients with normal-pressure hydrocephalus were examined. Cerebrospinal fluid (CSF) was collected before and after operation with a ventriculoperitoneal shunt. A slight plasma-like protein pattern indicating a blood-brain barrier (BBB) dysfunction was seen in 38% of the patients bef...
Cisternography with the water-soluble contrast medium metrizamide provides substantial advantages for CT demonstration: the discrimination and sharpness of definition of the basal cisterns can be considerably improved by the positive demonstration of the subarachnoid spaces. Studies of CSF dynamics make it...
Normal pressure hydrocephalus (NPH), a CSF circulation disorder, is important as a reversible cause of gait and cognitive disturbance in an aging population. The inconsistent response to CSF shunting is usually attributed to difficulties in differential diagnosis or co-morbidity. Improving outcome depend...
Figure 2. In normal pressure hydrocephalus, an excess of CSF enlarges the ventricles, stretching the brain and causing symptoms. As CSF slowly builds up in the ventricles, they enlarge and stretch the brain (Fig. 2). This can damage nearby nerve fibers that control the legs, bladder, and ...
In both, the excessive amount of CSF, can be caused by a blockage in the ventricular system of the brain preventing the normal ow of CSF, or as the result of a problem with CSF absorption. Additionally, there is a condi- tion known as normal pressure hydrocephalus (NPH), which ...
Alzheimer's disease, normal-pressure hydrocephalus, and senescent changes in CSF circulatory physiology: a hypothesis. There is evidence that production and turnover of CSF help to clear toxic molecules such as amyloid-β peptide (Aβ) from the interstitial‐fluid space of ... GD Silverberg,M ...
- Deficit in absorption of CSF leads to increased CSF pressure. This is measured by computing resistance to CSF outflow. –Ischemia – ventricular enlargement leads to vascular stretching, decreased compliance, and high pulse pressure leading to barotrauma or shear stress Lumbar infusion test –Spina...
Conclusion: Ventricular enlargement is a common but not sine qua non indicator of CSF shunt failure, even after weeks or months of elevated intracranial pressure, and therefore cannot be relied upon for the diagnosis of CSF shunt failure. Although an increase in ventricular size is usually seen ...