Stage Mental Status Asterixis EEG
Stage1 Changes in behavior (euphoria/depression), mild confusion, slurred speech, disordered sleep Yes/No Usually Normal
Stage 2 Lethargy, moderate confusion Yes Abnormal
Stage 3 Marked confusion (stupor), incoherent speech, sleeping but arousable Yes Abnormal
Stage 4 Coma, unresponsive to pain Yes Abnormal
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