A Study on the Clinical Significance of Periodic Lateralized Epileptiform Discharges and Relation to Brain Imaging Study in Children.
- Author:
Jong Hwa LEE
1
;
Eun Young PARK
;
Nam Su KIM
;
In Joon SEOL
Author Information
1. Department of Pediatrics, College of Medicine, Hanyang University, Seoul, Korea.
- Publication Type:Original Article
- Keywords:
Periodic lateralized epileptiform discharges;
Brain imaging study
- MeSH:
Atrophy;
Brain Edema;
Brain*;
Cerebral Infarction;
Child*;
Electroencephalography;
Humans;
Hydrocephalus;
Incidence;
Intracranial Hemorrhages;
Male;
Medical Records;
Neuroimaging*;
Retrospective Studies;
Seizures
- From:Journal of the Korean Pediatric Society
2000;43(3):380-385
- CountryRepublic of Korea
- Language:Korean
-
Abstract:
PURPOSE: Periodic lateralized epileptiform discharges (PLEDs), initially described by Chatrian et al in 1964, are an EEG phenomenon characterized by lateralized or focal spike-and-wave complexes with moderate to high voltage which occur in a periodic or semiperiodic pattern. This study was performed to assess the clinical significance of PLEDs and its relation to an imaging study of the brain. MEHTODS: Twenty children (10 males and 10 females), from 2 days to 14 years of age, who had been hospitalized at Hanyang University Hospital were studied retrospectively. Their medical records, EEG results and brain imaging study were reviewed. RESULTS: Of the 20 patients studied, 15 patients showed unilateral PLEDs and 5 had bilateral PLEDs in EEG. Brain imaging studies were done for 18 of the patients, revealing abnormalities in 15 patients in this order of frequency: intracranial hemorrhage, diffuse cerebral atrophy, leukomalacia, cerebral infarctions, cerebral edema and hydrocephalus. PLED sites were not significantly correlated with the results of the imaging study. Finally, 3 patients died and 17 patients survived, and among the surviving 17 patients, 5 had recurrent seizures, 1 had recurrent seizures with mental regression, 3 had neurologic sequelae without seizures and 8 had no neurologic sequelae. CONCLUSION: We conclude that children who show PLEDs in EEG are more commonly associated with acute cerebral lesions and there is a high incidence of subsequent seizures and/or other neurological sequelae in surviving children with PLEDs.
