communicating hydrocephalus


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Related to communicating hydrocephalus: communicating hydrocele

com·mu·ni·cat·ing hy·dro·ceph·a·lus

type of hydrocephalus in which there is an abnormality in cerebrospinal fluid absorption; there is no obstruction to cerebrospinal fluid flow in the ventricular system or where the cerebrospinal fluid passes into the spinal canal.

communicating hydrocephalus

[kəmyo̅o̅′nikā′ting]
Etymology: L, communicans + Gk, hydor, water, kephale, head
a form of hydrocephalus in which there is an increase in cerebrospinal fluid that involves the entire ventricular system and the subarachnoid space. It is caused by an abnormality in the ability to absorb fluid in the subarachnoid space. No obstruction exists in the ventricular pathways.

communicating hydrocephalus

Normal pressure hydrocephalus Neurology An enlargement of cerebral ventricles due to ↑ secretion and/or ↓ production and absorption of CSF, where the ventricular conduits are open, and the fluid moves freely into the spinal subarachnoid space, but is blocked by obliteration of the subarachnoid cisterns around the brainstem or subarachnoid spaces over the cerebral convexities Etiology Arnold-Chiari malformation, infections–eg, bacterial meningitis, toxoplasmosis, CMV, or other viral meningitides, subarachnoid hemorrhage, ↑ production of CSF–eg, choroid plexus papilloma, Hurler syndrome due to fibrosis in the subarachnoid space, or hypervitaminosis A

com·mu·ni·cat·ing hy·dro·ceph·a·lus

(kŏ-myūn'i-kāt-ing hī'drō-sef'ă-lŭs)
Type of hydrocephalus in which there is an abnormality in cerebrospinal fluid absorption; there is no obstruction to cerebrospinal fluid flow in the ventricular system or where the cerebrospinal fluid passes into the vertebral canal.
References in periodicals archive ?
Elevated CSF opening pressure, increased protein, and communicating hydrocephalus should arouse the suspicion of a process impairing drainage of CSF.
Key words: communicating hydrocephalus, vitamin A, deficiency, avian, bird, cockatoo, Cacatua goffini
Overall, the changes in the brain were consistent with a communicating hydrocephalus with marked periventricular and submeningeal parenchymal atrophy with secondary ventriculomegaly and expansion of the subarachnoid space.
9,41,45) First, because NCC is a chronic inflammatory disease, seeding of the subarachnoid cisterns results in communicating hydrocephalus, which can be relieved only by shunting.

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