Electroencephalogram in the dementia workup
Open accessAbstract
Dementia is affecting an increasing proportion of the population in the developed world. It is important to reach a correct diagnosis of dementia, because this has implications on the treatment. The electroencephalogram (EEG) is, in general, not a sensitive test for detecting dementia and is not recommended in the standard workup of dementia. In spite of this, however, EEG is useful in patients with deteriorating mental status in whom dementia is suspected mainly to rule out delirium, depression, atypical complex partial seizures, and prion disease. An EEG also provides insight into the physiology of different dementia types. The EEG is most useful when interpreted within a well-defined clinical context, such as knowing the patient's degree of cognitive impairment. It is a noninvasive and inexpensive test, and the threshold should be low for ordering it. This article summarizes EEG findings with aging, different dementia types, and conditions masked as dementia.
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EEG may be used as a supportive test for delirium, but it has low specificity and sensitivity, and its application is mainly to distinguish delirium from a primary mental disorder or non-convulsive status epilepticus.
“The electroencephalogram (EEG) may be used as a supportive test, but it has low specificity and sensitivity, and its application is mainly to distinguish delirium from a primary mental disorder or a non‐convulsive status epilepticus 183 .”
From Mental health care for older adults: recent advances and new directions in clinical practice and research (2022) · cites this paper as [183]
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- Authors
- Jenssen, S.
- Affiliations
- Hahnemann University Hospital (US)
- Corresponding author
- Jenssen, Sigmund
- Venue
- American Journal of Alzheimer's Disease & Other Dementias®
- Publisher
- SAGE Publications
- Published
- 2005-05
- Volume
- 20
- Issue
- 3
- Pages
- 159-166
- ISSN
- 0888-4897 (ISSN-L)
- 1533-3175
- 1938-2731
- PMC
- PMC10833223
- OpenAlex
- W2125131482
- Cited by
- 21
- References
- 53
- Citations by year
- 2024: 3 · 2022: 2 · 2021: 1 · 2020: 1 · 2017: 2 · 2016: 2 · 2015: 2 · 2013: 1
- FWCI
- 0.80
- Type
- journal article
- Language
- en
- Open access
- bronze
- doi.org
- Locations
- American Journal of Alzheimer s Disease & Other Dementias® (publishedVersion)
- PubMed Central (publishedVersion)
- PubMed (publishedVersion)
- Topics
- Health Sciences › Medicine › Psychiatry and Mental health › Dementia and Cognitive Impairment Research
- Life Sciences › Neuroscience › Cognitive Neuroscience › EEG and Brain-Computer Interfaces
- Life Sciences › Neuroscience › Neurology › Neurological Disease Mechanisms and Treatments
- Keywords
- EEG, dementia diagnosis, delirium, depression, complex partial seizures, prion disease, cognitive impairment, Alzheimer's disease, differential diagnosis
- MeSH terms
- Aged, Aged, 80 and over, Brain, Diagnosis, Differential, Electroencephalography, Female, Humans, Huntington Disease, Creutzfeldt-Jakob Syndrome, Magnetic Resonance Imaging, Male, Middle Aged, Parkinson Disease, Sleep, REM, Dementia, Vascular
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