Descargas epileptiformes periódicas lateralizadas: 1. Aspectos clínicos e eletrencefalograficos

Bertolucci, Paulo Henrique Ferreira; Silva, Ademir Baptista da

doi:10.1590/s0004-282x1987000400002

Cited by 8 publications

(2 citation statements)

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“…They are more specific with respect to the etiology and may be encountered in disorders like some toxic encephalopathies ( for baclofen or ketamine, for example), anoxic brain injury and SSPE 3 . In SSPE (suggested by the presence of PLIDDs in a child with dementia and myoclonic jerks), the stereotyped complexes, occurring at a regular interval and having a constant relationship to myoclonus, make this as one of the most characteristic and disease-specific of all EEG patterns 34,[48][49][50][51] . The early descriptions, by Cobb 48 , in 1966, characterized the stage II of SSPE by bilaterally symmetrical and synchronous generalized, stereotyped high amplitude delta waves, called Radermacker or "R" complexes, recurring at regular intervals of 5 to 15 seconds, although less specific and atypical EEG changes have been described 49 .…”

Section: Generalized Periodic Epileptiform Dischargesgpedsmentioning

confidence: 99%

Periodic EEG patterns: importance of their recognition and clinical significance

Andraus

Alves-Leon

2012

Arq. Neuro-Psiquiatr.

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Periodic electroencephalographic (EEG) patterns consist of discharges usually epileptiform in appearance, which occur at regular intervals, in critical patients. They are commonly classified as periodic lateralized epileptiform discharges (PLEDs), bilateral independent PLEDs or BIPLEDs, generalized epileptiform discharges (GPEDs) and triphasic waves. Stimulus-induced rhythmic, periodic or ictal discharges (SIRPIDs) are peculiar EEG patterns, which may be present as periodic discharges. The aim of this study is to make a review of the periodic EEG patterns, emphasizing the importance of their recognition and clinical significance. The clinical significance of the periodic EEG patterns is uncertain, it is related to a variety of etiologies, and many authors suggest that these patterns are unequivocally epileptogenic in some cases. Their recognition and classification are important to establish an accurate correlation between clinical, neurological, laboratorial and neuroimaging data with the EEG results.

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Section: Generalized Periodic Epileptiform Dischargesgpedsmentioning

confidence: 99%

Periodic EEG patterns: importance of their recognition and clinical significance

Andraus

Alves-Leon

2012

Arq. Neuro-Psiquiatr.

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“…Neuro-Psiquiat. (São Paulo) 47(1) 1989 Caso LOL. EEG: PLEDs, paroxismos periódicos de múltiplas espículas lateralizadas, à esquerda.…”

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Descargas epileptiformes periódicas lateralizadas em neurocisticercose

Carvalho-Filho

Arruda

Melo-Souza

1989

Arq. Neuro-Psiquiatr.

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A case of a girl (10 years old) with a psycho-organic syndrome plus headache without signs of clear intracranial hypertension is related. The diagnosis of neurocysticercosis was made by CSF abnormalities. PLEDs over the left cerebral hemisphere were recorded at the first day after treatment with praziquantel (50mg/kg/day during 21 days). The first CT scan was normal and just after the treatment showed a prominent left cerebral hemisphere involvement, despite parenchymatous dissemination of cysticerci was bilateral. The treatment was successful and the patient became asymptomatic in the two years follow-up. The neurophysiologic aspects of this EEG abnormality is also discussed.

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Periodic lateralized epileptiform discharges: Do they represent an ictal pattern requiring treatment?

Hughes¹

2010

Epilepsy & Behavior

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The goal of this report is to review periodic lateralized epileptiform discharges (PLEDs), particularly their associated symptoms, the possibility that the pattern represents a focal status epilepticus, and finally the usefulness of antiepileptic drugs (AEDs). The associated symptoms often include an "altered state of consciousness" or "confusional state," but also more specific symptoms have been noted, such as nystagmus retractorius, cortical blindness, depression, apraxia, amnesia, hemianopsia, hemiparesis, gaze preference or deviation, dysphasia, and speech impediment. PLEDs have often been referred to as an ictal pattern, and many investigators have viewed the condition an example of subclinical status epilepticus. The intense hypermetabolism and increased blood flow revealed by PET and SPECT scans have been considered to support the ictal nature of this waveform. Although the pattern is difficult to treat, the AEDs that have been reported as successful include carbamazepine, midazolam, pentobarbital, sodium valproate, and felbamate. As only subtle symptoms are, at times, present and therefore may be missed and the pattern is known to be difficult to treat, epileptologists who view the PLED pattern as only an EEG curiosity and decide against treatment may wish to reevaluate the electroclinical evidence related to this interesting and significant pattern.

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Descargas epileptiformes periódicas lateralizadas: 1. Aspectos clínicos e eletrencefalograficos

Cited by 8 publications

References 10 publications

Periodic EEG patterns: importance of their recognition and clinical significance

Periodic EEG patterns: importance of their recognition and clinical significance

Descargas epileptiformes periódicas lateralizadas em neurocisticercose

Periodic lateralized epileptiform discharges: Do they represent an ictal pattern requiring treatment?

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