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Published on: April 9, 2014
Standard EEG and the difficult-to-assess mental status
Kanwaldeep S Sidhu1, Richard Balon, Victor Ajluni
1Department of Psychiatry and Behavioral Neurosciences, Wayne State University School of Medicine, 2751 East Jefferson Avenue, Suite 400, Detroit, MI 48207-4166, USA. ksidhu@med.wayne.edu
Summary
The standard electroencephalogram (SEEG) can aid in diagnosing delirium in psychiatric patients when mental status is difficult to assess. Diffuse EEG slowing is a key indicator of encephalopathy, supporting its use in clinical evaluations.
Area of Science:
- Neuroscience
- Psychiatry
- Clinical Neurology
Background:
- Delirium is a common differential diagnosis in acute psychiatric care.
- Assessing delirium is challenging when patients cannot communicate their orientation.
- The utility of standard electroencephalogram (SEEG) in this context is unclear.
Purpose of the Study:
- To investigate the role of SEEG in evaluating delirium in psychiatric patients.
- To synthesize existing literature on EEG findings in delirium.
Main Methods:
- Conducted comprehensive literature searches on "delirium" and "EEG" (1950-2007).
- Focused on 45 articles, with 12 undergoing stringent review.
- Analyzed SEEG findings, also considering quantitative EEG.
Main Results:
- Diffuse slowing on EEG is a recognized sign of encephalopathy.
- EEG abnormalities are frequently reported in psychiatric patients with delirium.
- Specific patterns of EEG abnormalities were noted across studies.
Conclusions:
- Standard electroencephalogram (SEEG) can be a valuable tool for diagnosing delirium.
- EEG findings, particularly diffuse slowing, support the diagnosis of encephalopathic processes.
- This diagnostic aid is especially useful for patients with impaired mental status assessment.
