Periodic Slow Waves Presenting as Ictal Electroencephalography Findings in Complex Partial Status Epilepticus

Case Reports in Neurology
Daisuke YasugiGo Taniguchi

Abstract

The diagnosis of nonconvulsive status epilepticus (NCSE) largely relies on electroencephalography (EEG) findings, but the existing diagnostic criteria for EEG results are sometimes inconsistent. Much debate has centered on periodic epileptic discharges (PEDs) and their relationship with seizures. The recently published Salzburg Consensus Criteria for diagnosis of NCSE, which consider PEDs to be ictal findings under several conditions, have been proven to have high diagnostic accuracy. However, the criteria do not include periodic slow waves (PSWs) and do not consider these as overall ictal electrographic changes. Here, we report 2 cases of complex partial status epilepticus in which routine EEG showed PSWs without epileptiform activity during the clinical ictal phase. Both patients were elderly males who had histories of seizures and presented with impaired consciousness and signs such as aphasia or tongue automatism that indicated a temporal lobe origin. After we administered antiepileptic drugs (AED), the clinical signs and periodic EEG slow waves disappeared. These cases show that PSWs may appear as ictal electrographic changes in NCSE. When PSWs accompany clinical signs suggestive of NCSE, they should be considered ictal fi...Continue Reading

References

Jan 1, 1980·Archives of Neurology·Y Kuroiwa, G G Celesia
Jun 1, 2000·The Canadian Journal of Neurological Sciences. Le Journal Canadien Des Sciences Neurologiques·M Sadler, R Desbiens
Apr 5, 2005·Journal of Clinical Neurophysiology : Official Publication of the American Electroencephalographic Society·Derek J Chong, Lawrence J Hirsch
Sep 29, 2007·Epilepsia·David E FriedmanLawrence J Hirsch
Mar 11, 2008·Epilepsia·Peter W Kaplan
Feb 9, 2012·Arquivos de neuro-psiquiatria·Maria Emilia Cosenza AndrausSoniza Vieira Alves-Leon
Sep 6, 2013·Epilepsia·Sándor BeniczkyEugen Trinka
Dec 19, 2015·Clinical Neurophysiology : Official Journal of the International Federation of Clinical Neurophysiology·Johannes P KorenChristoph Baumgartner
Mar 15, 2016·Clinical Neurophysiology : Official Journal of the International Federation of Clinical Neurophysiology·Valia RodríguezSuzette M LaRoche

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