The role of changes in CSF inflow in patients without intracranial pathology has been studied. The CSF outflow resistance has been calculated, by dividing the CSF pressure rise by the speed of intrathecal saline infusion. The average CSF pressure rise produced during infusion test (infusion 2 ml/min) amounted to 11.15 mmHg. The calculated CSF outflow resistance equaled to 5.58 +/- 1.1 mm Hg/ml/min. On-line computer assisted analysis during infusion test helps to shorten the procedure and makes it more precise.
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