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Clinical Correlates of Frontal Intermittent Rhythmic Delta Activity Without Structural Brain Lesion

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Author(s)
Keun Tae KimYoung-Nam RohNan Hee ChoJae Cheon Jeon
Keimyung Author(s)
Kim, Keun TaeRoh, Young NamCho, Nan HeeJeon, Jae Cheon
Department
Dept. of Neurology (신경과학)
Dept. of Surgery (외과학)
Dept. of Internal Medicine (내과학)
Dept. of Emergency Medicine (응급의학)
Journal Title
Clinical EEG and neuroscience
Issued Date
2021
Volume
52
Issue
1
Keyword
frontal intermittent rhythmic delta activityintermittent rhythmic delta activityelectroencephalographyFIRDAencephalopathy
Abstract
Frontal intermittent rhythmic delta activity (FIRDA), rhythmic slow wave pattern lasting several seconds over the anterior leads of electroencephalography (EEG), has been reported in a wide variety of clinical conditions. We investigated the clinical significance of FIRDA without structural brain lesions. We reviewed 7689 EEGs between October 2017 and September 2019 at a university hospital. Patients (age >18 years) who were confirmed to have "nonsignificant neuroimaging" were examined. Clinical data were retrospectively collected, and the estimated cause was carefully decided. We found 83 FIRDA among 7689 EEGs (1.08%). After patients with any structural lesion identified on neuroimaging were excluded, 37 FIRDAs were reviewed. There were 20 (51.35%) patients of metabolic encephalopathy. Six patients showed FIRDA due to neurodegenerative disease (16.21%). In addition, we found 6 (16.21%) of neurodegenerative disease and 5 (13.51%) of hypoxic encephalopathy (cardiac arrest). Four (16.21%) patients were related to systemic infection (10.81%), whereas 2 were related to encephalitis (5.40%). We demonstrated several potential etiologies, including metabolic encephalopathy, neurodegenerative disease, hypoxic encephalopathy, and infections, which should be considered in the case of FIRDA without structural brain lesions.
Keimyung Author(s)(Kor)
김근태
노영남
조난희
전재천
Publisher
School of Medicine (의과대학)
Citation
Keun Tae Kim et al. (2021). Clinical Correlates of Frontal Intermittent Rhythmic Delta Activity Without Structural Brain Lesion. Clinical EEG and neuroscience, 52(1), 69–73. doi: 10.1177/1550059420922741
Type
Article
ISSN
2169-5202
Source
https://journals.sagepub.com/doi/10.1177/1550059420922741
DOI
10.1177/1550059420922741
URI
https://kumel.medlib.dsmc.or.kr/handle/2015.oak/43022
Appears in Collections:
1. School of Medicine (의과대학) > Dept. of Emergency Medicine (응급의학)
1. School of Medicine (의과대학) > Dept. of Internal Medicine (내과학)
1. School of Medicine (의과대학) > Dept. of Neurology (신경과학)
1. School of Medicine (의과대학) > Dept. of Surgery (외과학)
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