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Table 1 Cerebral performance category

From: Middle latency auditory-evoked potential index monitoring of cerebral function to predict functional outcome after emergency craniotomy in patients with brain damage

Favorable outcome  
CPC 1 Mild deficits. Able to work. May have mild neurologic or psychologic deficits
CPC 2 Moderate deficits. Capable of independent activities of daily life. Able work in sheltered environment.
Unfavorable outcome  
CPC 3 Severe deficits. Conscious but dependent on others for daily support. Ranges from ambulatory state to severe dementia or paralysis.
CPC 4 Coma or vegetative state
Brain dead  
CPC 5 Apnea, areflexia, EEG silence