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pubmed-article:1902616pubmed:abstractTextMean hemispheric blood flow (CBF) was studied in 38 comatose, severely brain-injured patients following intravenous administration of xenon-133. Repeated measurements were performed in order to evaluate cerebral vasoreactivity following a decrease in PaCO2. Simultaneously, arterial-venous oxygen differences (AVDO2) and intracranial pressure (ICP) were measured. An impaired CBF response to hyperventilation (delta CBF/delta PaCO2 less than 1.0) was obtained in 22 patients. Three of 16 patients with preserved CO2-reactivity died because of their brain injuries and 12 patients reached good recovery/moderate disability. In the group of patients with impaired vasoreactivity 11 of 22 patients died and only three patients reached good recovery/moderate disability. The study documents that in patients with severe traumatic brain lesions measurements of cerebral vasoreactivity to hyperventilation give prognostic information that is not obtained by clinical observations or CT-scanning.lld:pubmed
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pubmed-article:1902616pubmed:dateRevised2006-11-15lld:pubmed
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pubmed-article:1902616pubmed:year1991lld:pubmed
pubmed-article:1902616pubmed:articleTitleCerebral vasoreactivity and the prediction of outcome in severe traumatic brain lesions.lld:pubmed
pubmed-article:1902616pubmed:affiliationDepartment of Neurosurgery, University Hospital of Lund, Sweden.lld:pubmed
pubmed-article:1902616pubmed:publicationTypeJournal Articlelld:pubmed
pubmed-article:1902616pubmed:publicationTypeResearch Support, Non-U.S. Gov'tlld:pubmed
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