The cerebral perfusion pressure (CPP) describes the vascular pressure for maintaining cerebral perfusion. If this pressure drops too low, then cerebral ischemia develops.
• The normal cerebral perfusion pressure is 70 - 85 mm Hg.
• A decrease in the cerebral perfusion pressure may occur with systemic hypotension and/or increased intracranial pressure.
• A cerebral perfusion pressure < 70 mm Hg may be associated with decreased cerebral perfusion. A cerebral perfusion pressure < 60 mm Hg is associated with cerebral ischemia.
• A high cerebral perfusion pressure may result in vascular congestion and increased intracranial pressure.
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