We assessed the reliability and accuracy of scalp/sphenodial recordings for ictal localization by retrospectively analyzing 706 noninvasive ictal recordings from 110 patients who subsequently underwent stereoencephalographic evaluation. Strictly defined unilateral temporal/sphenoidal ictal patterns correctly predicted findings of depth electrode examination in 82 to 94% of cases. These strictly defined predictive patterns could be detected with excellent interrater reliability. The patterns are misleading in only a minority of cases, but cannot be used in isolation for definite ictal localization.
Youth with active epilepsy generally had the poorest QOL. Severe seizures and female sex were associated with more problems. Sex-severity interactions should be explored in future research.
One hundred fifty-three patients with medically refractory partial epilepsy underwent chronic stereotactic depth-electrode EEG (SEEG) evaluations after being studied by positron emission tomography (PET) with 18F-fluorodeoxyglucose (FDG) and scalp-sphenoidal EEG telemetry. We carried out retrospective standardized reviews of local cerebral metabolism and scalp-sphenoidal ictal onsets to determine when SEEG recordings revealed additional useful information. FDG-PET localization was misleading in only 3 patients with temporal lobe SEEG ictal onsets for whom extratemporal or contralateral hypometabolism could be attributed to obvious nonepileptic structural defects. Two patients with predominantly temporal hypometabolism may have had frontal epileptogenic regions, but ultimate localization remains uncertain. Scalp-sphenoidal ictal onsets were misleading in 5 patients. For 37 patients with congruent focal scalp-sphenoidal ictal onsets and temporal hypometabolic zones, SEEG recordings never demonstrated extratemporal or contralateral epileptogenic regions; however, 3 of these patients had nondiagnostic SEEG evaluations. The results of subsequent subdural grid recordings indicated that at least 1 of these patients may have been denied beneficial surgery as a result of an equivocal SEEG evaluation. Weighing risks and benefits, it is concluded that anterior temporal lobectomy is justified without chronic intracranial recording when specific criteria for focal scalp-sphenoidal ictal EEG onsets are met, localized hypometabolism predominantly involves the same temporal lobe, and no other conflicting information has been obtained from additional tests of focal functional deficit, structural imaging, or seizure semiology.
We report results from the first part of an ongoing longitudinal study aimed at identifying the relative contributions of demographic, seizure, and family variables in the prediction of behavior problems in children with epilepsy. We studied 127 children with epilepsy aged 8-12 years and their mothers. Self-report questionnaires, interviews, and medical records were data sources. Backward and forward stepwise elimination procedures using multiple regression indicated five variables that contributed significantly to prediction of behavior problems: female gender, family stress, family mastery, extended family social support, and seizure frequency. These factors accounted for 29% (p < 0.001) of the variation in behavioral problems. Findings suggest that family variables are important correlates of behavior problems and should be considered in clinical management of children with epilepsy.
We report results from the first data collection on an ongoing longitudinal study aimed at describing the natural history of adaptation to childhood epilepsy and asthma in children and their families. We studied 136 children with epilepsy and 134 children with asthma aged 8-12 years. Data were collected from the children, their mothers, and their school teachers through interviews, school records, and questionnaires. The two samples were compared on four domains of quality of life: physical, psychological, social, and school. Data were analyzed by a 2 x 2 between-subjects multivariate analysis of covariance with type of illness (epilepsy or asthma) as the independent variable and length of time since onset of illness as a covariate. A significant main effect was noted for illness [multivariate F (15, 236) = 11.36, p < 0.001]. Our major finding was that children with epilepsy had a relatively more compromised quality of life in the psychological, social, and school domains. In contrast, children with asthma had a more compromised quality of life in the physical domain. Our findings suggest that attention simply to seizure control in the clinical setting will not address the full range of quality-of-life problems of children with epilepsy.
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