A 62-year-old man presented with a 2-month history of psychiatric symptoms. These were preceded by cognitive deterioration, urinary incontinence and an abnormal gait. A diagnosis of normal-pressure hydrocephalus (NPH) was made, and the patient improved after surgery.

Although extrapyramidal features in normal pressure hydrocephalus (NPH) are not uncommon, presentations with Parkinson's syndrome as the predominant feature are rare and may give rise to diagnostic difficulties. Failure of patients with parkinsonism to respond to therapy, should alert one to the possibility of NPH.

Background: We have previously seen that idiopathic normal pressure hydrocephalus (iNPH) patients havingelevated intracranial pressure (ICP) pulse amplitude consistently respond to shunt surgery. In this study weexplored how the cerebrospinal fluid pressure (CSFP) pulse amplitude determined during lumbar infusion testing,correlates with ICP pulse amplitude determined during over-nig...

large size direct shear tests (i.e.300 x 300mm) were conducted to investigate the interaction between clay reinforced with geogrids embedded in thin layers of sand. test results for the clay, sand, clay-sand, clay-geogrid, sandgeogrid and clay-sand-geogrid are discussed. thin layers of sand including 4, 6, 8, 10, 12 and 14mm were used to increase the interaction between the clay and the geogrid...

Normal pressure hydrocephalus (NPH) has posed a challenge to neurologists for 5 decades. Difficulties in understanding its pathophysiology have hindered efforts to diagnose it and to develop a better approach to selecting patients for shunt surgery. We know that many patients with NPH have CSF absorption difficulty as measured by resistance to CSF outflow (Rout). The problem is that many with n...