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Acta Neurochir. Suppl. · Jan 2005
Contribution of raised ICP and hypotension to CPP reduction in severe brain injury: correlation to outcome.
- A Marmarou, A Saad, G Aygok, and M Rigsbee.
- Department of Neurosurgery, Virginia Commonwealth University Medical Center, Richmond, VA 23219, USA. amarmarou@vcu.edu
- Acta Neurochir. Suppl. 2005 Jan 1;95:277-80.
AbstractThe aim of this study was to determine to what degree hypotension and ICP contribute to the reduction of cerebral perfusion pressure (CPP), particularly in light of the shift in emphasis to CPP management by the use of pressors. The study population consisted of severely head injured patients extracted retrospectively from the Traumatic Coma Data Bank and compared with 139 patients from the Smith Kline component of the American Brain Injury Consortium database where outcome was available. The percentage time that ICP exceeded 20 mm Hg and CPP less than 60 mm Hg was computed for 5 days post injury. At each hour when CPP was less than 60 mm Hg the contribution of raised ICP and low arterial pressure or both was determined. In the first cohort, hypotension was the predominant factor leading to CPP reduction. With use of the CPP concept of treatment, the major contribution to CPP shifted to ICP and arterial hypotension played less of a role. Overall, CPP management has been associated with improved outcome.
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