Aetiology and prognosis of encephalopathic patterns on electroencephalogram in a general hospital

O’Sullivan, Sean S.; Neligan, Aidan; Mullins, Gerard; Daly, Seán; McNamara, Brian; Galvin, R.; Sweeney, Brian

doi:10.1016/j.jocn.2007.04.004

Cited by 4 publications

(2 citation statements)

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“…Different etiologies, as one would expect to find in a general hospital setting, contributed to the cause of the AEs in these patients. The etiologies reported in the two groups were similar to those observed in a previous investigation, with the exception of dementia and learning disabilities that were not observed in the current study 14 . Dementia and learning disabilities were the main underlying cause of the AEs observed amongst a previous investigation of 123 patients 14 .…”

Section: Discussionsupporting

confidence: 90%

Quantitative EEG evaluation in patients with acute encephalopathy

Braga

Assis

Ribeiro

et al. 2013

Arq. Neuro-Psiquiatr.

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Objective: To investigate the use of quantitative EEG (qEEG) in patients with acute encephalopathies (AEs) and EEG background abnormalities. Method: Patients were divided into favorable outcome (group A, 43 patients) and an unfavorable outcome (group B, 5 patients). EEGLAB software was used for the qEEG analysis. A graphic of the spectral power from all channels was generated for each participant. Statistical comparisons between the groups were performed. Results: In group A, spectral analysis revealed spectral peaks (theta and alpha frequency bands) in 84% (38/45) of the patients. In group B, a spectral peak in the delta frequency range was detected in one patient. The remainder of the patients in both groups did not present spectral peaks. Statistical analysis showed lower frequencies recorded from the posterior electrodes in group B patients. Conclusion: qEEG may be useful in the evaluations of patients with AEs by assisting with the prognostic determination.Keywords: encephalopaties, coma, EEG, neurophysiology. RESUMO Objetivos:Investigar o uso do EEG quantitativo (qEEG) em pacientes com encefalopatias agudas (EAs ) e anormalidades da atividade de base no EEG. Método: Os pacientes foram divididos em prognóstico favorável (grupo A, 43 pacientes) e desfavorável (grupo B, 5 pacientes). O programa EEGLAB foi utilizado para a análise do qEEG. Um gráfico da potência espectral de todos os canais foi gerado para cada participante. Os dois grupos foram comparados estatisticamente. Resultados: No grupo A, a análise espectral revelou picos (frequências teta e alfa) em 84% (38/45) dos pacientes. No grupo B, um pico espectral na frequência delta foi detectado em um paciente. Os pacientes remanescentes dos dois grupos não apresentaram picos espectrais. A análise estatística mostrou menores frequências registradas nos eletrodos posteriores dos pacientes do grupo B. Conclusão: O qEEG pode ser útil na avaliação de pacientes com EAs auxiliando na determinação do prognóstico.

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Section: Discussionsupporting

confidence: 90%

Quantitative EEG evaluation in patients with acute encephalopathy

Braga

Assis

Ribeiro

et al. 2013

Arq. Neuro-Psiquiatr.

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“…In general, EEG has been successfully applied to identify epileptic states or interictal pattern or whether an altered mental status derives from lateralized focal dysfunction or significant metabolic alterations; however, the correlation between EEG patterns, imaging findings and specific clinical diagnoses such as MIE are underrecognized, and much of our understanding of these correlations come from isolated case reports [20]. Investigations with electro-clinical-neuroimaging correlations would expedite appropriate diagnosis and clinical management of patients in the ICU and neurological ward, improving patients' care and shortening the duration of patients' stay in the hospital [20,21].…”

Section: Discussionmentioning

confidence: 99%

Metronidazole Encephalopathy EEG Features: A Case Report with Systematic Review of the Literature

et al. 2020

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Metronidazole-induced encephalopathy (MIE) is a rare and often under-recognized iatrogenic condition. The diagnosis should be considered in metronidazole-treated patients presenting with acute encephalopathy, unprovoked seizures and cerebellar signs. While typical magnetic resonance imaging (MRI) findings strongly support the diagnosis, electroencephalography (EEG) features have been rarely reported and poorly described. We present a longitudinal EEG assessment in one patient with encephalopathy due to metronidazole toxicity who presented a peculiar EEG pattern presentation and evolution. During the acute phase of encephalopathy, the EEG showed a monomorphic, sharply contoured theta activity symmetrically represented over frontal regions with an anterior–posterior progression which evolved in parallel with clinical worsening. Together with a systematic review of the literature, we discuss whether this EEG activity may represent a distinct neurophysiological correlate of ‘cerebellar encephalopathy’.

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The EEG as an independent indicator of mortality and healthcare utilization

Stecker

2009

Clinical Neurophysiology

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Aetiology and prognosis of encephalopathic patterns on electroencephalogram in a general hospital

Cited by 4 publications

References 15 publications

Quantitative EEG evaluation in patients with acute encephalopathy

Quantitative EEG evaluation in patients with acute encephalopathy

Metronidazole Encephalopathy EEG Features: A Case Report with Systematic Review of the Literature

The EEG as an independent indicator of mortality and healthcare utilization

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