[Evaluation of clinical usefulness of the infusion test and the indicator of intracranial pressure instability in patients with open hydrocephalus].

In 8 patients with progressive open hydrocephalus and in 6 with stabilized hydrocephalus the infusion test was done and the instability index of the intracranial pressure was determined. In cases of progressive hydrocephalus the values of the test and index indicated a considerable reduction of the efficiency of cerebrospinal fluid resorption. In cases of stabilized hydrocephalus the results of the test and index suggested a better efficiency of CSF resorption. The test and index are useful in the differential diagnosis of progressive open hydrocephalus against stabilized open hydrocephalus.