What electroencephalographic abnormality is associated with hepatic encephalopathy

What electroencephalographic abnormality is associated with hepatic encephalopathy? 

Slow triphasic waves are the abnormal EEG pattern reported with hepatic encephalopathy, and the pattern is commonly used to support the diagnosis.

It can also be seen with encephalopathy associated with head trauma (especially with subdural hematoma), acute cerebral anoxia, uremia, electrolyte imbalance, and thyrotoxicosis. 


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