A Case of Atypical Absence Seizures After Electroconvulsive Treatment in a Patient With Treatment-Resistant Depression

Burakgazi, Evren; Dalkılıç, Alican; Moghal, Usman; Umang, Shah; Carran, Melissa

doi:10.1177/1550059412452674

Cited by 7 publications

(4 citation statements)

References 29 publications

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“…1). 7,13,17–45 In 4 cases, there were multiple tardive seizure episodes during further ECT sessions in the same course of treatment. Quality of studies was considered moderate, with all but 2 scoring 5 or higher, out of a possible total of 8, in the Joanna Briggs Institute critical appraisal tool (Supplementary data, Supplemental Digital Content, http://links.lww.com/JECT/A144).…”

Section: Resultsmentioning

confidence: 99%

“…11,[47][48][49] Tardive seizures may instead result from a failure of the "normal" postictal seizure suppression, thought to be controlled by thalamocortical pathways. 18 Postictal EEG recordings typically demonstrate delta wave slowing or total suppression of background activity, the duration of which is variable. 50,51 Nonepileptiform slow wave abnormalities may continue for days to weeks after ECT.…”

Section: Discussionmentioning

confidence: 99%

“…In any case, kindling in humans remains speculative, with higher-order animal models not only suggesting that humans may be resistant to kindling but also demonstrating inhibition of kindling with ECT type stimulation 11,47–49 . Tardive seizures may instead result from a failure of the “normal” postictal seizure suppression, thought to be controlled by thalamocortical pathways 18 . Postictal EEG recordings typically demonstrate delta wave slowing or total suppression of background activity, the duration of which is variable 50,51 .…”

Section: Discussionmentioning

confidence: 99%

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Tardive Seizures After Electroconvulsive Therapy

Warren

Eyre-Watt

Pearson

et al. 2022

J ECT

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ObjectivesSeizures that occur spontaneously after termination of an electroconvulsive therapy (ECT) seizure are termed tardive seizures. They are thought to be a rare complication of ECT, influenced by risk factors that affect seizure threshold. However, there has been limited review of tardive seizures with modified ECT. We aimed to review the literature to provide clinical guidance for the use of ECT after tardive seizures.MethodsPubMed, EMBASE, PsycInfo, and CINAHL databases were searched from inception to May 2021 to identify cases of modified ECT, with evidence of a seizure occurring within 7 days of a terminated ECT seizure. Data for demographic, medical, pharmacological, anesthetic, and ECT variables as well as management strategies were collected.ResultsThere have been 39 episodes of modified ECT-related tardive seizures published over a period of 40 years. In 97.4% of cases, there was at least 1 identified potential risk factor for seizures, including use of a seizure-lowering medication and/or preexisting neurological injury. Major complications were uncommon (<15% of cases); however, 1 fetal death and 1 subsequent suicide were reported. No case was diagnosed with epilepsy, although around 20% continued on antiepileptic medications. More than half of the included patients were retrialed on ECT, with only 15% developing further tardive seizures.ConclusionsSeizures that occurred spontaneously after the termination of an ECT seizure are a rare complication of modified ECT. Recommencing ECT after a tardive seizure may occur after review of modifiable seizure risk factors and with consideration of antiepileptic medication and extended post-ECT monitoring.

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Section: Resultsmentioning

confidence: 99%

Section: Discussionmentioning

confidence: 99%

Section: Discussionmentioning

confidence: 99%

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Tardive Seizures After Electroconvulsive Therapy

Warren

Eyre-Watt

Pearson

et al. 2022

J ECT

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“…Typical absence seizures are accompanied by an EEG hallmark of brief ictal and interictal 2.5-to 3-Hz spike-and-wave complexes with a maximum amplitude over the frontorolandic regions. 11 A previous analysis of EEG dynamic changes of Genetic Absence Epilepsy Rat from Strasbourg (GAERS) has demonstrated that EEG epochs prior to seizures exhibit a higher degree of regularity/predictability than that in seizure-free EEG epochs, but they present a lower degree than that in seizure EEG epochs. 12,13 These EEG precursors in rat models give us a clue in predicting human absence epilepsy via EEG signals.…”

Section: Introductionmentioning

confidence: 99%

Using Relevance Feedback to Distinguish the Changes in EEG During Different Absence Seizure Phases

Liu

Ouyang

2014

Clin EEG Neurosci

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We carried out a series of statistical experiments to explore the utility of using relevance feedback on electroencephalogram (EEG) data to distinguish between different activity states in human absence epilepsy. EEG recordings from 10 patients with absence epilepsy are sampled, filtered, selected, and dissected from seizure-free, preseizure, and seizure phases. A total of 112 two-second 19-channel EEG epochs from 10 patients were selected from each phase. For each epoch, multiscale permutation entropy of the EEG data was calculated. The feature dimensionality was reduced by linear discriminant analysis to obtain a more discriminative and compact representation. Finally, a relevance feedback technique, that is, direct biased discriminant analysis, was applied to 68 randomly selected queries over nine iterations. This study is a first attempt to apply the statistical analysis of relevance feedback to the distinction of different EEG activity states in absence epilepsy. The average precision in the top 10 returned results was 97.5%, and the standard deviation suggested that embedding relevance feedback can effectively distinguish different seizure phases in absence epilepsy. The experimental results indicate that relevance feedback may be an effective tool for the prediction of different activity states in human absence epilepsy. The simultaneous analysis of multichannel EEG signals provides a powerful tool for the exploration of abnormal electrical brain activity in patients with epilepsy.

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Hirnstimulationsverfahren, Elektrokonvulsionstherapie

Baghai¹,

Kasper²

2016

Psychiatrie, Psychosomatik, Psychotherapie

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A Case of Atypical Absence Seizures After Electroconvulsive Treatment in a Patient With Treatment-Resistant Depression

Cited by 7 publications

References 29 publications

Tardive Seizures After Electroconvulsive Therapy

Tardive Seizures After Electroconvulsive Therapy

Using Relevance Feedback to Distinguish the Changes in EEG During Different Absence Seizure Phases

Hirnstimulationsverfahren, Elektrokonvulsionstherapie

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