Topics Discussed: coma; mental state abnormal; mental status changes; neurology.
Sections: Altered Mental Status and Coma: Introduction, Pathophysiology, History, Physical Examination, Diagnostic Testing, Therapy, Disposition, Special Considerations, References.
- For coma to occur, there must be an insult to both cerebral hemispheres or to the reticular activating system.
- Decorticate posturing signifies dysfunction of the cerebral hemispheres with an intact brain stem.
- Decerebrate posturing signifies a lesion of the midbrain.
- Intussuception can have a "neurologic" presentation ranging from lethargy to obtundation.
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