Methods Subjects

seizures, localizing seizure onset, assessing response to therapy, and quantifying seizures and spikes.3,4 One report even suggests that ambulatory EEG may avoid inpatient admission for patients undergoing surgical work-up for temporal lobectomy.5 Few studies have evaluated the usefulness of ambula-tory EEG in the pediatric population, and in these, ambu-latory EEG contributed to the clinical diagnosis in 31 % to 87 % of cases.6-11 We undertook this prospective study to determine (1) the clinical situations in which ambulatory EEG would be most and least helpful, and the reasons for its failure to provide clinically helpful information, and (2) the satisfaction and the tolerance of ambulatory EEG monitoring both from the parent/guardian and child’s perspective