Evaluation of the poorly responsive patient requires an organized approach. One aim of this chapter is to meticulously outline an examination technique, delineate the anatomic basis for the observed abnormal neurologic signs, review pertinent neurophysiology and, lastly, discuss the differential diagnosis. The differential diagnosis is formulated after answering a primary question. Does this patient have a focal lesion, multifocal lesions, or global cerebral dysfunction? This seemingly simple problem is often a formidable one.
Obtundation Stupor Coma Delirium Encephalopathy Herniation Brain death
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