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  • Title: CSF dynamics in patients with subarachnoid and/or intraventricular hemorrhage.
    Author: Kosteljanetz M.
    Journal: J Neurosurg; 1984 May; 60(5):940-6. PubMed ID: 6716162.
    Abstract:
    The purpose of this study was to examine the extent to which reduction of cerebrospinal fluid (CSF) absorption contributes to raised intracranial pressure (ICP) in patients with acute subarachnoid hemorrhage (SAH). Seventeen patients suffering from SAH and/or intraventricular hemorrhage were studied; all were admitted in Grades II to V according to Hunt and Hess. Eleven patients had a proven aneurysm. The ICP, monitored via an intraventricular catheter, was above 15 mm Hg (2 kPa) during part of the monitoring period in all patients. B-waves at 1/min were noted in all patients. Resistance to outflow of CSF was determined by the following techniques: 1) bolus injection; 2) constant-rate steady-state infusion; or 3) controlled withdrawal ("inverse infusion"). Resistance to outflow of CSF was increased in all patients, ranging from 11.5 to 85 mm Hg/ml/min. The ICP was linearly correlated with outflow resistance. Four (50%) of the eight survivors required a shunt. Neither the presence of hydrocephalus on admission, nor the level of ICP, nor the magnitude of resistance to outflow of CSF was clearly related to the requirement of a permanent CSF diversion.
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