Journal of neurology, neurosurgery, and psychiatry · 2002
Outpatient video EEG recording in the diagnosis of non-epileptic seizures: a randomised controlled trial of simple suggestion techniques.
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McGonigal A, Oto M, Russell A J C, Greene J, Duncan R
Аннотация
OBJECTIVE: To assess the yield of recorded habitual non-epileptic seizures during outpatient video EEG, using simple suggestion techniques based on hyperventilation and photic stimulation.
DESIGN: Randomised controlled trial of "suggestion" v "no suggestion" during outpatient video EEG recording.
SETTING: Regional epilepsy service (tertiary care; single centre).
PARTICIPANTS: 30 patients (22 female, 8 male), aged over 16 years, with a probable clinical diagnosis of non-epileptic seizures; 15 were randomised to each group.
MAIN OUTCOME MEASURES: Yield of habitual non-epileptic seizures recorded, and requirement for additional inpatient video EEG.
RESULTS: 10/15 patients had habitual non-epileptic seizures with suggestion; 5/15 had non-epileptic seizures with no suggestion (p = 0.058; NS); 8/9 patients with a history of previous events in medical settings had non-epileptic seizures recorded during study. Logistic regression analysis with an interaction clause showed a significant effect of suggestion in patients with a history of previous events in medical settings (p = 0.003). An additional inpatient video-EEG was avoided in 14 of the 30 patients (47%).
CONCLUSIONS: Habitual non-epileptic seizures can be recorded reliably during short outpatient video EEG in selected patients. Simple (non-invasive) suggestion techniques increase the yield at least in the subgroup with a history of previous events in medical settings. Inpatient video EEG can be avoided in some patients.
DESIGN: Randomised controlled trial of "suggestion" v "no suggestion" during outpatient video EEG recording.
SETTING: Regional epilepsy service (tertiary care; single centre).
PARTICIPANTS: 30 patients (22 female, 8 male), aged over 16 years, with a probable clinical diagnosis of non-epileptic seizures; 15 were randomised to each group.
MAIN OUTCOME MEASURES: Yield of habitual non-epileptic seizures recorded, and requirement for additional inpatient video EEG.
RESULTS: 10/15 patients had habitual non-epileptic seizures with suggestion; 5/15 had non-epileptic seizures with no suggestion (p = 0.058; NS); 8/9 patients with a history of previous events in medical settings had non-epileptic seizures recorded during study. Logistic regression analysis with an interaction clause showed a significant effect of suggestion in patients with a history of previous events in medical settings (p = 0.003). An additional inpatient video-EEG was avoided in 14 of the 30 patients (47%).
CONCLUSIONS: Habitual non-epileptic seizures can be recorded reliably during short outpatient video EEG in selected patients. Simple (non-invasive) suggestion techniques increase the yield at least in the subgroup with a history of previous events in medical settings. Inpatient video EEG can be avoided in some patients.