obstructive hydrocephalus


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ob·struc·tive hy·dro·ceph·a·lus

hydrocephalus secondary to a block in cerebrospinal fluid flow in the ventricular system or between the ventricular system and spinal canal.

obstructive hydrocephalus

Noncommunicating hydrocephalus Pediatrics Hydrocephalus due to interference with the flow of CSF, resulting in enlarged ventricles; OH may be due to congenital aqueductal stenosis or atresia–eg, Dandy-Walker syndrome, a complication of intracranial infection, violent birth trauma or inherited in an X-R fashion. Cf Communicating hydrocephalus.

ob·struc·tive hy·dro·ceph·a·lus

(ŏb-strŭk'tiv hī'drō-sef'ă-lŭs)
Hydrocephalus secondary to a block in cerebrospinal fluid flow in the ventricular system or between the ventricular system and spinal canal.
Synonym(s): noncommunicating hydrocephalus.
References in periodicals archive ?
It would be reasonable to use ETV as the first line treatment, specifically in obstructive hydrocephalus cases, with predictive success scores in the realm of 70-90% as predicted by the ETV Success Score.
It is my belief that this report (although the primary pathology of temporal entrapment is distinct from obstructive hydrocephalus) might give crucial perspectives regarding the mechanisms of CSF circulation in pathologic as well as physiologic circumstances.
Caption: Figure 1: CT scan and MRI at admission documented acute obstructive hydrocephalus caused by a pineal region mass.
The most frequent tubercular Meningitis-induced complications in children were obstructive hydrocephalus (63.6%) followed by infarcts (45.4%) (Table/Fig.
Kanat et al., "Uncovering a new cause of obstructive hydrocephalus following subarachnoid hemorrhage: choroidal artery vasospasm-related ependymal cell degeneration and aqueductal stenosis--first experimental study," World Neurosurgery, vol.
Obstructive hydrocephalus is a relatively common complication of intraventricular hemorrhage (IVH) resulting in high morbidity and mortality (1).
Once we built the final models, we estimated the mean length of stay and mean hospitalization charges for diagnoses and procedures commonly seen with neurocysticercosis (i.e., seizures, obstructive hydrocephalus, headache, stroke, mental health disorder, encephalitis/meningitis, cerebral edema, syncope, neuroimaging, ventricular shunt management, and central nervous system surgery) by individually introducing dummy variables encoding these clinical variables into the models.
[4] Features that indicate aggressiveness and a poorer prognosis include obstructive hydrocephalus, as in our irst patient, and cerebrospinal fluid seeding, as in our second patient, [4] which led to their death.
Furthermore, the 1% frequency of obstructive hydrocephalus is observed in patients with NMOSD, which is far greater than in the general adult population.
Children with posterior fossa tumors are frequently very ill on presentation, with severe headache and vomiting as a result of obstructive hydrocephalus. Since brainstem compression is often present, rapid and catastrophic deterioration is always a danger5-7.
It is also difficult to determine complete obstruction of the aqueduct, which is relevant because third ventriculostomy is most successful in true obstructive hydrocephalus. The absence of flow void signal intensity on standard sagittal T2 MR images is unreliable as it depends on several parameters (aqueductal diameter, CSF velocity, section thickness) and may be weak or absent if the aqueduct is physiologically narrow but not obstructed.

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