EEG Findings in Emergency Department Patients with Altered Mental Status

Retrospective study of 112 emergency department patients presenting with altered mental status who underwent EEG, finding that 8.9% had seizures on EEG, with 60% being subclinical (lacking clinical manifestations). The study demonstrates that nonconvulsive status epilepticus (NCSE) is an important but often unrecognized cause of altered mental status requiring emergent EEG evaluation.