normal pressure hydrocephalus


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nor·mal pres·sure hy·dro·ceph·a·lus

a type of hydrocephalus developing usually in older people, due to failure of cerebrospinal fluid to be absorbed by the pacchionian granulations, and characterized clinically by progressive dementia, unsteady gait, urinary incontinence, and usually, a normal spinal fluid pressure.

normal pressure hydrocephalus

A misnomer referring to a condition seen in older adults that consists of low-grade hydrocephalus and intermittently elevated intracranial pressure, usually nocturnal, causing Hakim’s triad of symptoms (gait apraxia, urinary incontinence, dementia).

normal pressure hydrocephalus

Adult hydrocephalus, communicating hydrocephalus, idiopathic hydrocephalus Neurology A form of gradual onset progressive hydrocephalus, which accounts for ±5% of all dementias Etiology Idiopathic, obstruction to CSF flow; CSF is produced normally but not reabsorbed; the brain's ventricles enlarge to accommodate the ↑ volume of CSF; CSF pressure remains normal; it is accompanied by brain atrophy due to compression by the fluid-filled ventricles Risk factors Conditions causing obstruction of CSF–eg, closed head injury, neurosurgery with craniotomy, meningitis, subarachnoid hemorrhage. See Hydrocephalus.

nor·mal pres·sure hy·dro·ceph·a·lus

(nōr'măl presh'ŭr hī'drō-sef'ă-lŭs)
A type of hydrocephalus developing usually in older people, due to failure of cerebrospinal fluid to be absorbed by the pacchionian granulations, and characterized clinically by progressive dementia, unsteady gait, urinary incontinence, and usually, a normal spinal fluid pressure.
References in periodicals archive ?
Normal pressure hydrocephalus and deep white matter ischemia: Which is the chicken, and which is the egg?
Cognitive recovery in idiopathic normal pressure hydrocephalus after shunt.
Identifying signs and symptoms of normal pressure hydrocephalus (NPH) and implementing effective treatment can be challenging.
nonreversible dementia, advances in treatment, and imaging of deep brain stimulation; and imaging of Alzheimer's disease, non-Alzheimer's cortical dementia, dementia with extrapyramidal syndromes, vascular dementia, infection and inflammatory conditions associated with dementia, normal pressure hydrocephalus, tumor-related cognitive dysfunction, trauma, endocrine and toxin-related dementia, inborn errors of metabolism, cerebellar degeneration and dysfunction, and motor neuron disorders.
Normal pressure hydrocephalus. Neurol Clin 2007;25(3):809-832.
A Normal pressure hydrocephalus (NPH) is a disorder affecting the brain's ventricles--cavities filled with cerebrospinal fluid that normally help buffer the brain from injury.
It can help determine the possible pathophysiology of normal pressure hydrocephalus using peak velocity and flow parameters.
Title: Normal Pressure Hydrocephalus: A Guide to Diagnosis and Management
Since the indications for ETV are not only permanently increasing, but also constantly adjusting and getting re-tailored [1,2], they nowadays, apart from cerebral aqueduct stenosis, includes many clinical conditions with underlying disturbance of cerebrospinal fluid (CSF) hydrodynamics, such as in patients with posterior fossa tumors and cysts [6], communicating hydrocephalus [7], normal pressure hydrocephalus [8], and in patients with previous ventriculoperitoneal shunts failure [9], but lately also in the hydrocephalic patients with achondroplasia [10].
An imbalance in this mechanical coupling is presumed to be responsible for pathological cerebral states, such as normal pressure hydrocephalus (NPH) or Alzheimer disease.
Arcieri with normal pressure hydrocephalus, or NPH.