The diagnostic value of initial video-EEG monitoring in children - Review of 1000 cases

Eishi Asano, Carol Pawlak, Aashit Shah, Jagdish Shah, Aimee F. Luat, Judy Ahn-Ewing, Harry T. Chugani

Research output: Contribution to journalArticlepeer-review

68 Scopus citations


Objective: We retrospectively reviewed the clinical utility of initial video-EEG monitoring in a series of 1000 children suspected of epileptic disorders. Methods: The ages of patients (523 boys and 477 girls) ranged from 1 month to 17 years (median age: 7 years). The mean length of stay was 1.5 days (range: 1-10 days). Outcomes were classified as: 'useful-epileptic' (successful classification of epilepsy), 'useful-nonepileptic' (demonstration of nonepileptic habitual events), 'uneventful' (normal EEG without habitual events captured), and 'inconclusive' (inability to clarify the nature of habitual events with abnormal interictal EEG findings). Results: A total of 315 studies were considered 'useful-epileptic'; 219 'useful-nonepileptic'; 224 'uneventful'; 242 'inconclusive'. Longer monitoring was associated with higher rate of a study classified as 'useful-epileptic' in all age groups (Chi square test: p < 0.001). In addition, longer monitoring was associated with lower rate of a study classified as 'inconclusive' in adolescences (p < 0.001). Approximately half of the children with successful classification of epilepsy were assigned a specific diagnosis of epilepsy syndrome according to the International League Against Epilepsy (ILAE) classification. We found only 22 children with ictal EEG showing a seizure onset purely originating from a unilateral temporal region. Conclusion: Video-EEG monitoring may fail to capture habitual episodes. To maximize the utility of studies in the future, a video-EEG monitoring longer than 3 days should be considered in selected children such as adolescences with habitual events occurring on a less than daily basis. We recognize a reasonable clinical utility of the current ILAE classification in the present study. It may not be common to identify children with pure unilateral temporal lobe epilepsy solely based on video-EEG monitoring.

Original languageEnglish
Pages (from-to)129-135
Number of pages7
JournalEpilepsy Research
Issue number1-3
StatePublished - 2005


  • Electroencephalography
  • Epileptic syndromes
  • ILAE classification of epilepsy
  • Infantile spasms
  • Seizure semiology
  • Temporal lobe epilepsy


Dive into the research topics of 'The diagnostic value of initial video-EEG monitoring in children - Review of 1000 cases'. Together they form a unique fingerprint.

Cite this