PMID- 17277572 OWN - NLM STAT- MEDLINE DCOM- 20070327 LR - 20070205 IS - 0736-0258 (Print) IS - 0736-0258 (Linking) VI - 24 IP - 1 DP - 2007 Feb TI - Incorporating abbreviated EEGs in the initial workup of patients who present to the emergency room with mental status changes of unknown etiology. PG - 16-21 AB - Patients frequently present to the emergency room (ER) with mental status changes without obvious cause. The EEG is underused in this population. The authors investigated whether an abbreviated EEG (AbEEG) can be incorporated in the early evaluation of these patients to provide useful information. A 5-minute AbEEG was performed using a preformed electrode placement system on 25 patients who presented to the ER with mental status changes of unknown cause. AbEEG findings were categorized as normal, showing diffuse abnormalities, focal abnormalities, electrographic seizures, or uninterpretable. Using retrospective chart review, the authors determined if the cause of mental status change was a diffuse encephalopathy or a nonneurologic event (DENNE), a focal brain abnormality, nonconvulsive status epilepticus (NCSE), psychogenic, or unknown, and if particular AbEEG findings were associated with specific causes of altered sensorium. The AbEEG identified NCSE in two patients who presented with new-onset seizures. The presence of diffuse slowing on the AbEEG was highly suggestive of mental status changes due to DENNE. AbEEGs can be successfully incorporated in the early evaluation of patients who present to the ER with mental status changes of unknown cause and provide useful information in this setting. FAU - Bautista, Ramon Edmundo D AU - Bautista RE AD - Department of Neurology, University of Florida Health Sciences Center, Jacksonville, Florida 32209, USA. ramon.bautista@jax.ufl.edu FAU - Godwin, Steven AU - Godwin S FAU - Caro, David AU - Caro D LA - eng PT - Journal Article PT - Research Support, Non-U.S. Gov't PL - United States TA - J Clin Neurophysiol JT - Journal of clinical neurophysiology : official publication of the American Electroencephalographic Society JID - 8506708 SB - IM MH - Adolescent MH - Adult MH - Aged MH - Aged, 80 and over MH - Brain Mapping/*methods MH - Critical Care/*methods MH - Electroencephalography/*methods MH - Emergency Medical Services/*methods MH - Female MH - Humans MH - Male MH - Mental Disorders/*classification/*diagnosis MH - Middle Aged EDAT- 2007/02/06 09:00 MHDA- 2007/03/28 09:00 CRDT- 2007/02/06 09:00 PHST- 2007/02/06 09:00 [pubmed] PHST- 2007/03/28 09:00 [medline] PHST- 2007/02/06 09:00 [entrez] AID - 00004691-200702000-00003 [pii] AID - 10.1097/WNP.0b013e318030e8cb [doi] PST - ppublish SO - J Clin Neurophysiol. 2007 Feb;24(1):16-21. doi: 10.1097/WNP.0b013e318030e8cb.