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Arquivos de Neuro-Psiquiatria

Print version ISSN 0004-282X

Arq. Neuro-Psiquiatr. vol.53 no.2 São Paulo June 1995 

Subclinical rhythmic electrographic discharge in adults: an atypical evolution


Descarga eletrográfica rítmica subclínica do adulto: uma evolução atípica



Délrio F. SilvaI; Edmar ZanoteliII; Márcia Marques LimaIII; Renato AnghinahIII; José Geraldo C. LimaIV

IHead of the EEG Sector, Escola Paulista de Medicina (EPM)
IIResident in Neurology
IIIJunior Doctor of the EEG Sector
IVFull Professor and Head of the Discipline of Neurology, EPM




The subclinical rhythmic electrographic discharge in adults (SREDA) has been rarely reported. We describe the case of a 71 year-old man with transient ischemic attack, whose EEG showed an atypical evolution of this uncommon pattern. The computed tomography scan and cerebrospinal fluid were normal. We are not aware of any other report in the literature with this atypical evolution of SREDA.

Key words:subclinical rhythmic electrographic discharge in adults (SREDA), EEG.


A descarga eletrográfica rítmica subclínica do adulto tem sido raramente referida na literatura. Relatamos o caso de um homem de 71 anos com ataque isquêmico transitório, cujo EEG mostrou evolução atípica deste padrão incomum. A tomografia computadorizada de crânio e o liquido cefalorraquidiano foram normais. Na literatura por nós pesquisada, não achamos outra publicação com evolução atípica do SREDA.

Palavras-chave: descarga eletrográfica rítmica subclínica do adulto (DERSA) (SREDA), EEG.



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1. Gastaut H, Naquet R. Étude électroencéphalographique de l'insuffisance circulatoire cérébrale. Symposium International sur la Circulation Cérébrale. Paris: Sandoz, 1966, p 163-191.         [ Links ]

2. Herranz F, Lope S. Subclinical paroxysmal rhythmic activity (Abstr). Electroenceph Clin Neurophysiol 1984, 58:5.         [ Links ]

3. Jasper H. The ten-twenty electrode system of the International Federation. Electroenceph Clin Neurophysiol 1958, 10:371-375.         [ Links ]

4. Lipman IJ, Hughes JR. Rhythmic mid-temporal discharges: an electroclinical study. Electroenceph Clin Neurophysiol 1969, 27:43-47.         [ Links ]

5. Miller CR, Westmoreland BF, Klass DW. Subclinical rhythmical EEG discharges of adults (SREDA): further observations. Am J EEG Technol 1985, 25:217-224.         [ Links ]

6. Naquet R, Louard C, Rhodes J, Vigouroux M. A propos de certaines décharges paroxystiques du carrefour pariéto-temporo-occipital: leur activation par l'hypoxie. Rev Neurol 1961, 105:203-207.         [ Links ]

7. Naquet R, Franck G, Vigouroux M. Données nouvelles sur certaines décharges paroxystiques du carrefour pariéto-temporo-occipital, rencontrées chez l'homme. Zbl Neurochir 1965, 25:153-180.         [ Links ]

8. Tanarro FJH, Lope ES. EEG subclinical paroxysmal rhythmic activity. Rev EEG Neurophysiol 1984,14:9-15.         [ Links ]

9. Thomas P, Migneco O, Darcourt J, Chatel M. Single photon emission computed tomography study of subclinical rhythmic electrographic discharge in adults. Electroenceph Clin Neurophysiol 1992, 83:223-227.         [ Links ]

10. Westmoreland BF, Klass DW. A distinctive rhythmic EEG discharge of adults. Electroenceph Clin Neurophysiol, 1981, 51:186-191.         [ Links ]

11. Westmoreland BF. Benign EEG variants and patterns of uncertain significance. In Daly DD, Pedley TA (eds). Current practice of clinical EEG. Ed 2. New York: Raven Press, 1990, p 243-252.         [ Links ]



Aceite: 14-outubro-1994.



Dr. Délrio Façanha da Silva - Disciplina de Neurologia, Setor de Eletrencefalografia, Escola Paulista de Medicina - Rua Botucatu 740 - 04023-900 São Paulo SP - Brasil.

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