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The use of intraventricular resorption tests (IVT) in the management of hydrocephalic children.

Ventricular fluid outflow resistance was determined by steady state infusion of artificial CSF in the lateral ventricle in 35 children in whom the decision for a shunt procedure was judged to be uncertain. Such testing allows direct shunting when found indicated and unnecessary shunting can be avoided. The test was found helpful in 11 children to evaluate the need for continued shunting, assessment of indwelling shunts and establishment of a basis to remove the shunt.