Related Experiment Videos
Can CT predict the level of CSF block in tuberculous hydrocephalus?
G E Bruwer1, S Van der Westhuizen, C J Lombard
1Department of Paediatrics and Child Health, Faculty of Health Sciences, Tygerberg Hospital, PO Box 19063, 7505, Tygerberg, South Africa.
Introduction:
Treatment of obstructive hydrocephalus in children with tuberculous meningitis (TBM) depends on the level of the cerebrospinal fluid (CSF) block. Air-encephalography is regarded as the gold standard for differentiating communicating and non-communicating hydrocephalus. Since air-encephalography involves a lumbar puncture, it carries the risk of cerebral herniation. AIM. The aim of this study was to determine whether communicating and non-communicating hydrocephalus in TBM can be differentiated by means of cranial computerised tomography (CT).
Methods:
A number of CT indices were measured in 50 children with communicating and 34 children with non-communicating hydrocephalus according to air-encephalographic findings.
Results:
The only CT finding that correlated with the type of hydrocephalus was the shape of the third ventricle. Significantly more children with non-communicating hydrocephalus had a rounded third ventricle than those with communicating hydrocephalus.
Conclusion:
CT is therefore not useful in determining the level of CSF block in TBM. Air-encephalography remains the most reliable way of determining the level of CSF obstruction.