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Anoxia - Case 2

A 41 year-old man was unresponsive after a cardiac arrest. Examination demonstrated intact brainstem reflexes and extensor posturing. No evidence of cortical function was present.

Show the Effaced Basal Cisterns   Show the Effaced Ventricles   Show the Absence of Sulci over the Convexities

CT scan of the brain.  Note the diffuse cerebral edema, most prominently seen in the white matter.  No sulci are seen over the convexities and the cisterns around the brainstem have been effaced.  Diffuse edema leads to increased intracranial pressure followed by decreased brain perfusion and then brain death.

Revised 04/25/06.
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