Health-related Quality of Life and Self-perceived Competence of Children Assessed before and up to Two Years after Epilepsy Surgery

Comparison of Hemispheric Surgery Techniques for Pediatric Drug-Resistant Epilepsy: An Individual Patient Data Meta-analysis

BACKGROUND AND OBJECTIVES

Hemispheric surgery effectively treats unihemispheric pediatric drug-resistant epilepsy (DRE) by resecting and/or disconnecting the epileptic hemisphere. Modifications to the original anatomic hemispherectomy have generated multiple functionally equivalent, disconnective techniques for performing hemispheric surgery, termed functional hemispherotomy. While a myriad of hemispherotomy variants exist, all of them can be categorized according to the anatomic plane they are performed in, which includes vertical approaches at or near the interhemispheric fissure and lateral approaches at or near the Sylvian fissure. This meta-analysis of individual patient data (IPD) aimed to compare seizure outcomes and complications between the hemispherotomy approaches to better characterize their relative efficacy and safety in the modern neurosurgical treatment of pediatric DRE, given emerging evidence that outcomes may differ between them.

METHODS

CINAHL, Embase, PubMed, and Web of Science were searched from inception to September 9, 2020, for studies reporting IPD from pediatric patients with DRE who underwent hemispheric surgery. Outcomes of interest were seizure freedom at last follow-up, time-to-seizure recurrence, and complications including hydrocephalus, infection, and mortality. The χ2 test compared the frequency of seizure freedom and complications. Multivariable mixed-effects Cox regression controlling for predictors of seizure outcome was performed on propensity score-matched patients to compare time-to-seizure recurrence between approaches. Kaplan-Meier curves were made to visualize differences in time-to-seizure recurrence.

RESULTS

Fifty-five studies reporting on 686 unique pediatric patients treated with hemispheric surgery were included for meta-analysis. Among the hemispherotomy subgroup, vertical approaches resulted in a greater proportion of seizure free patients (81.2% vs 70.7%, p = 0.014) than lateral approaches. While there were no differences in complications, lateral hemispherotomy had higher rates of revision hemispheric surgery due to incomplete disconnection and/or recurrent seizures than vertical hemispherotomy (16.3% vs 1.2%, p < 0.001). After propensity score matching, vertical hemispherotomy approaches independently conferred longer time-to-seizure recurrence than lateral hemispherotomy approaches (hazard ratio 0.44, 95% CI 0.19-0.98).

DISCUSSION

Among functional hemispherotomy techniques, vertical hemispherotomy approaches confer more durable seizure freedom than lateral approaches without compromising safety. Future prospective studies are required to definitively determine whether vertical approaches are indeed superior and how it should influence clinical guidelines for performing hemispheric surgery.

Clinical and Surgical Approach for Cerebral Cortical Dysplasia

The present article describes pathophysiological and clinical aspects of congenital malformations of the cerebral tissue (cortex and white matter) that cause epilepsy and very frequently require surgical treatment. A particular emphasis is given to focal cortical dysplasias, the most common pathology among these epilepsy-related malformations. Specific radiological and surgical features are also highlighted, so a thorough overview of cortical dysplasias is provided.

Health-related quality of life in children with epilepsy: a concept analysis

PURPOSE

This study aimed to conduct a concept analysis of health-related quality of life in children with epilepsy to promote conceptual clarification and facilitate mutual understanding of the concept.

METHODS

Walker and Avant's concept analysis method was adopted.

RESULTS

Health-related quality of life in children with epilepsy consists of six attributes: health status, inner strength, close relationships, resource-rich community, social acceptance, and changeability. According to the ecological system paradigm, these attributes are structured into five dimensions: organism, microsystem, macrosystem, exosystem, and chronosystem. These dimensions provide a comprehensive approach to the relationship between children with epilepsy and their environment. Epilepsy and interactions with multilevel ecological systems that are directly and indirectly related to children with epilepsy precede the concept, followed by positive and negative affective responses.

CONCLUSION

The findings of this study may support effective communication in various practice settings, thereby contributing to the health and well-being of children with epilepsy, as well as the development and expansion of interventions to improve their health-related quality of life.

Parents' opinions about epilepsy surgery in children with epilepsy

OBJECTIVE

This survey aimed to investigate the opinions of the parents of children with epilepsy with regard to the application of epilepsy surgery for their children.

METHODS

We surveyed all the parents of children with epilepsy referred to our neurology clinic (Shiraz University of Medical Sciences) in April-July 2022. We collected their opinions about epilepsy surgery based on a predesigned questionnaire. The inclusion criteria included parents of all children with epilepsy (1 to 16 years of age, with at least one-year history of epilepsy, and with at least one drug used in the past 12 months).

RESULTS

In total, 472 people participated in the study; 277 participants (58.7%) were willing to have epilepsy surgery for their child; the most common reason was to be able to discontinue the drugs. Sex (male), age (younger), and education (college) of the parents had significant associations with the parental willingness to have surgery for their children. The patient's drug regimen (polytherapy) and history of ictal injury (in the child) also had significant associations with the parental willingness to have surgery for the children.

CONCLUSION

Most parents of children with epilepsy are willing to have epilepsy surgery for their children if their physician presents epilepsy surgery to them as an established, safe, and effective treatment option. Patient and parental-related factors should be considered when designing educational materials and programs for preoperative counseling for the parents of children with drug-resistant seizures.

Parents' experiences of their child's assessment on an epilepsy surgery pathway: A qualitative study

PURPOSE

Children's epilepsy surgery services (CESS) in the UK aim to improve outcomes for young children by increasing access to surgery. Consideration for surgery is complex and time consuming, yet there is lack of research exploring how this process might impact on families. This study aimed to explore parents' experiences of their child consideration for epilepsy surgery to inform future service development and delivery.

METHODS

Semi-structured interviews with parents of children (aged < six years) considered for surgery within the previous three years. Recruitment was through social media and purposive sampling of medical records. Data were analysed using a thematic and iterative approach.

RESULTS

15 parents of 14 children were interviewed (13 mothers and 2 fathers). Initial discussions of epilepsy surgery were described as 'shocking' but also as a source of hope. However, unclear communication between staff and parents, including lack of information about the steps, assessments/investigations and timeframes involved in the process of assessment for surgery led to some feeling 'out of control,' uncertain and in some cases distressed. Parents described examples of positive support from staff, yet many felt they needed additional general and emotional support throughout the epilepsy surgery pathway.

CONCLUSIONS

Findings highlight the importance of providing clear and consistent information about the epilepsy surgery assessment to minimise parental distress and help facilitate a sense of control. Recommendations include providing parents with advance warning that surgery will be discussed at their next appointment, improved access to psychosocial and clinical psychological support and a step-by-step guide of the process with realistic timelines.

Impact of epilepsy surgery on quality of life and burden of caregivers in children and adolescents

OBJECTIVE

The objective of this study was to analyze the impact of pediatric epilepsy surgery on the quality of life (QOL), determining whether patients improve, worsen, or maintain their preoperative patterns, as it relates to the burden of caregivers, as well as evaluating potential related factors, from both the children and caregivers perspectives.

MATERIAL AND METHODS

This is a retrospective study of children and adolescents who underwent epilepsy surgery and were evaluated through clinical data, videoelectroencephalogram (V-EEG), neuroimaging findings, neuropsychological testing, and aspects of QOL. These assessments were performed prior to surgery and after six months and two years of follow-up. Quality of life was assessed with epilepsy-specialized questionnaires, namely Questionnaire health-related quality of life for children with epilepsy (QVCE-50), Autoquestionnaire Qualité de Vie Enfant Image Scale (AUQUEI), Quality of life in epilepsy inventory for adolescents (QOLEI-AD-48); and burden of caregivers with Burden Interview - ZARIT scale. Postoperative changes in QVCE-50 were quantified using measures of the analysis of variance (ANOVA MR) for comparison of the difference between the three times of the scale and domains.

RESULTS

Fifty patients were enrolled. Of these, 27 (54%) were male, with a mean age at surgery of 8.2 years (range: 1-18 years). Thirty-five patients (70%) were Engel I and one was Engel II (2%) at six months of follow-up, whereas 28 (56%) were Engel I and 32 (64%) were Engel I or II at two years of follow-up. Preoperatively, 21 (42%) presented with moderate or severe intellectual disability. Postoperative cognitive evaluations at the two-year follow-up showed 18 (36%) maintained similar deficits. The QVCE-50 showed postoperative improvement in the two-year follow-up period, but not at six months after surgery. Postoperative improvements were associated mainly with better seizure outcome. Autoperception evaluations were limited because of the clinical and cognitive severity of patients. The burden of caregivers was quoted as mild to moderate and remained unchanged postoperatively.

CONCLUSIONS

Children and adolescents with surgically treated epilepsy reach a good seizure outcome, stabilize in intellectual and adaptive functions, and have an increase in QOL, from the caregiver's perspective. Nevertheless, their burden remains unchanged. Seizure outcome is the main factor for improvement in the QOL. The upgrading of structured questionnaires and QOL instruments specific to pediatric epilepsy can be helpful to assess patient- and caregiver-reported surgical outcomes, allowing for better planning of therapeutic approaches.

Seizure freedom improves health-related quality of life after epilepsy surgery in children

AIM

To determine whether epilepsy surgery improved health-related quality of life (HRQoL) and whether seizure freedom after surgery mediated the improvement in HRQoL.

METHOD

This multicenter cohort study compared HRQoL after epilepsy surgery to pharmacological management in children with drug-resistant epilepsy (DRE). HRQoL was measured using the Quality of Life in Childhood Epilepsy (QOLCE) questionnaire at baseline and 1-year follow-up. The mediator between treatment type and HRQoL was seizure freedom.

RESULTS

Two hundred and thirty-seven patients were recruited (surgery group: n=147 [92 males, 45 females]; pharmacological group: n=90 [53 males, 37 females]). Mean age at seizure onset was 6 years (SD 4y 4mo) in the surgical group and 6 years 1 month (SD 4y) in the pharmacological group. The odds ratio of seizure freedom was higher for the surgery versus pharmacological group (β=4.24 [95% confidence interval {CI}: 2.26-7.93], p<0.001). Surgery had no direct effect on total QOLCE score at 1-year (β=0.24 [95% CI -2.04 to 2.51], p=0.839) compared to pharmacological management, but had an indirect effect on total QOLCE that was mediated by seizure freedom (β=0.92 [95% CI 0.19-1.65], p=0.013), adjusting for baseline total QOLCE score. Surgery had a direct effect on improving social function (p=0.043), and an indirect effect on improving physical function (p=0.016), cognition (p=0.042), social function (p=0.012) and behavior (p=0.032), mediated by seizure freedom.

INTERPRETATION

Greater seizure freedom achieved through epilepsy surgery mediated the improvement in HRQoL compared to pharmacological management in children with DRE.

WHAT THIS PAPER ADDS

Seizure freedom is higher after pediatric epilepsy surgery compared to pharmacologically managed epilepsy. Surgery indirectly improves health-related quality of life (HRQoL) mediated by seizure freedom compared to pharmacological management. Surgery has a direct effect on improving social function relative to pharmacological management. Baseline HRQoL was an important predictor of HRQoL after treatment.

Social functioning and health-related quality of life trajectories in people with epilepsy after epilepsy surgery

OBJECTIVE

An improvement in quality of life (QoL) over time after epilepsy surgery has been demonstrated in people with epilepsy; however, social functioning has been less investigated. We conducted this study to examine whether postsurgical improvement is parallel between QoL and social functioning in patients with epilepsy.

METHODS

We retrospectively reviewed patients who underwent epilepsy surgery. All participants completed a comprehensive neuropsychological assessment, the Quality of Life in Epilepsy Inventory (QOLIE-89) questionnaire, and the Social and Occupational Functioning Scale for Epilepsy (SOFSE) before surgery and at 3 months, 6 months, and 1 year after surgery. Demographic and epilepsy-related information was also collected. Generalized estimating equations with identity links were used to model the QOLIE-89 and SOFSE over time and possible associated factors. A p < 0.05 was considered statistically significant.

RESULTS

A total of 76 patients, including 36 males and 43 females aged 18 to 62 years were collected. Both total QOLIE-89 and overall SOFSE improved over time after epilepsy surgery (adjusted p value < 0.001 and 0.002, respectively, with Bonferroni's correction). Total QOLIE-89 improved 3 months after surgery, while overall SOFSE showed no significant improvement until 6 months after surgery. The presurgical Full-Scale Intelligence Quotient (FSIQ) of the Wechsler Adult Intelligence Scale-III and years of education were significantly associated with time-dependent improvement for both total QOLIE-89 and overall SOFSE (p value < 0.001). At one year after surgery, overall SOFSE and total QOLIE-89 scores were significantly higher in the seizure-free group than in the nonseizure-free group (p value = 0.040 and 0.032, respectively).

CONCLUSION

Social functioning significantly improved in people with epilepsy after surgery as QoL, but it took more time to exhibit improvement. People with better FSIQ and more years of education had better improvement in social functioning over time. The early intervention of rehabilitation programs after epilepsy surgery might be necessary to facilitate the improvement in social functioning.

Seizure outcome of pediatric epilepsy surgery

Objective

This systematic review and meta-analyses assessed seizure outcome following pediatric epilepsy surgery.

Methods

MEDLINE, EMBASE, and Cochrane were searched for pediatric epilepsy surgery original research from 1990 to 2017. The outcome was seizure freedom at 12 months or longer follow-up. Using random-effects models, the effect sizes for controlled studies, uncontrolled studies on surgery locations (temporal lobe [TL], extratemporal lobe [ETL], or hemispheric surgery), pathologies, nonlesional epilepsy, and incomplete resection were estimated. Meta-regression assessed the relationship between age at surgery, age at seizure onset, and seizure outcome. Random-effects network meta-analysis was conducted for surgery locations.

Results

Two hundred fifty-eight studies were included. Surgery achieved higher seizure freedom than medical therapy (odds ratio [OR] = 6.49 [95% confidence interval [CI]: 2.87–14.70], p < 0.001). Seizure freedom declined over time after surgery, from 64.8% (95% CI: 51.2%–76.4%; p = 0.034) at 1 year, to 60.3% (95% CI: 52.9%–67.4%; p = 0.007) at 5 years, and to 39.7% (95% CI: 28.4%–52.2%, p = 0.106) at 10 years. Seizure freedom was (1) highest for hemispheric surgery, followed by TL and ETL surgery, and (2) highest for tumor and lower for malformations of cortical development. Seizure freedom was lower for nonlesional than lesional epilepsy (OR = 0.54 [95% CI: 0.34, 0.88], p = 0.013) and incomplete than complete resection (OR = 0.13 [95% CI: 0.08, 0.21], p < 0.001). Age at surgery and age at seizure onset were associated with seizure freedom for mixed pathologies and surgery locations and TL surgery.

Conclusion

Epilepsy surgery was more effective than medical therapy to control seizures. Understanding seizure outcomes of different surgery locations, pathologies, nonlesional epilepsy, and incomplete resection will assist with presurgical counseling.

Cost-effectiveness of epileptic surgery compared with medical treatment in children with drug-resistant epilepsy

BACKGROUND

Epilepsy surgery is an alternative to continued antiepileptic drugs (AEDs) in children with drug-resistant epilepsy (DRE).

OBJECTIVE

The objective of the study was to measure, model, and compare the medical costs and impacts on health-related quality of life (HRQL) of epilepsy surgery versus continued medical treatment with AEDs in children with DRE.

METHODS

A decision analytic model was created to estimate the cost-effectiveness of epilepsy surgery relative to continued medical treatment with AEDs. The model was based on costing and effectiveness data collected from 105 children with DRE who were operated on at the Royal Children's Hospital, Melbourne, Australia. The mean cost of conducting epilepsy surgery was AU$ 61,417 per person. Effectiveness of continued medical treatment was sourced from best available literature. In the absence of published utility values for pediatric patients with epilepsy and ethical approval to contact patients directly, HRQL was estimated by four clinicians using the Child Health Utility 9 Dimension (CHU9D). Outcome measures were seizure freedom and quality-adjusted life years (QALYs).

RESULTS

The costs over 7.6 years of follow-up were AU$ 219,297 for the surgical treatment group compared with AU$ 170,583 for the medical treatment group. The incremental cost-effectiveness ratio (ICER) for surgically vs medical treatment was AU$ 76,538 per additional patient attaining seizure freedom and AU$ 75,541 per additional QALY gained.

CONCLUSION

Epilepsy surgery resulted in a greater reduction of seizures and improvement in HRQL but was more expensive than continued medical treatment with AEDs. Including benefits outside of a healthcare perspective would likely lead to a more compelling cost-effective argument.

Social functioning of children after epilepsy surgery: A literature review

This literature review on social functioning of children after epilepsy surgery is based on 24 papers addressing two categories of social functioning: social cognition (n = 4) and general social functioning (n = 20). Overall, studies that compared with healthy peers revealed children who had undergone epilepsy surgery to have more problems in both social cognition and general social functioning. Half of the studies found some improvement in social functioning in the first year(s) after epilepsy surgery, but this pertained to general social functioning, not to social cognition. The persistence of the problems in social cognition after surgery may be related to the critical period of brain maturation, lacking improvement of impairments in related cognitive domains or to a defective underlying brain condition - rather than to the epilepsy. Problems in general social functioning may be explained by the adjustments the children and their families had to make because of the child's drug-resistant epilepsy and difficulties to adjust to the new situation after surgery. The neurological and behavioral explanations are likely to be interrelated in light of the multifaceted and complex nature of social functioning. Epilepsy surgery does not appear to solve the problems in social functioning associated with having had drug-resistant epilepsy. As social functioning is an important aspect of healthy development, it should be assessed comprehensively in order to obtain a knowledge base that allows 1) proper treatment of children with epilepsy (CwE) and 2) counseling patients and families prior to and after epilepsy surgery.

Factorial Structure and Psychometric Analysis of the Persian Version of Perceived Competence Scale for Diabetes (PCSD-P)

As a basic psychological need, the level of perceived competence could expedite the achievement of diabetes self-management goals. Because of a lack of a specific data collection tool to measure the level of self-competence among Persian-speaking patients with diabetes, this study was conducted for (1) cross-cultural adaptation and (2) psychometric assessment of the Persian version of the Perceived Competence Scale for Diabetes (PCSD-P). Standard translation/back-translation procedure was carried out to prepare a preliminary draft of the PCSD-P. Content and face validities of the early draft were checked by an expert panel including 15 scholars in the field of health education and promotion as well as nursing education with experience of working and research on diabetes. The final drafted questionnaire was completed by 177 randomly selected patients with type 2 diabetes. On the basis of the collected data, the structural validity of the contrived version was appraised using exploratory and confirmatory factor analysis (EFA, CFA). Cronbach’s alpha and intraclass correlation (ICC) coefficients were used to check the scale’s reliability and internal consistency. The estimated measures of content validity index (CVI = 0.95) and content validity ratio (CVR = 0.8) were within the acceptable recommended range. The EFA analysis results demonstrated a single factor solution according to the items’ loadings for the corresponding component. The model fit indices, that is, root mean square error approximation (RMSEA = 0.000), comparative fit index (CFI = 1), Tucker–Lewis index (TLI = 1), incremental fit index (IFI = 1), normed fit index (NFI = 0.999), and relative fit index (RFI = 0.995), confirmed the consistency of the hypothesized one-factor solution. The values of the internal consistency and reliability coefficients were also in the vicinity of an acceptable range (α = 0.892, ICC = 0.886, P = 0.001). The study findings revealed good internal validity and applicability of the PCSD-P to measure the degree of self-competence among Persian-speaking type 2 diabetes patients to manage the chronic disease. Owing to unrepresentativeness of the study sample, future cross-cultural tests of PCSD-P are recommended on diverse and broader Persian-speaking populations.

Parent-reported symptoms of ADHD in young people with epilepsy before and two years after epilepsy surgery

The aim was to compare parent-reported symptoms of attention-deficit/hyperactivity disorder (ADHD) before (baseline) and two years after pediatric epilepsy surgery (follow-up). The parents of 107 children who underwent epilepsy surgery completed surveys including the Conners 10-item scale at baseline and follow-up. Changes in scores between baseline and follow-up were compared using paired sample t-test. Factors associated with changes in scores were analyzed using linear regression. Features of ADHD were significantly reduced at follow-up (p < 0.001). Items with the greatest reduction were items focusing on core aspects of the diagnostic criteria for ADHD. Fewer children were in the at-risk range for ADHD on the Conners 10-item scale at follow-up but this did not reach statistical significance (49% vs. 43%; p = 0.481). Factors independently significantly associated with improvement in ADHD symptoms on multivariable analysis were higher baseline scores (p < 0.001), seizure-free status (p = 0.029), and right-sided surgery (p = 0.031). Children who undergo epilepsy surgery have a high rate of ADHD symptoms. Parent-rated symptoms of ADHD improved at 2-year follow-up after epilepsy surgery. All children undergoing epilepsy surgery should undergo assessment for ADHD at baseline and follow-up.

Quality of Life After Epilepsy Surgery in Children: A Systematic Review and Meta-Analysis

BACKGROUND

Pediatric epilepsy surgery is a treatment modality appropriate for select patients with debilitating medication-resistant seizures. Previous publications have studied seizure freedom as the main outcome of epilepsy surgery. However, there has been no systematic assessment of the postoperative life quality for these children.

OBJECTIVE

To estimate the quality of life (QOL) long-term outcomes after surgery for intractable epilepsy in pediatric patients.

METHODS

A systematic search of the PubMed and Cochrane databases was performed. Studies reporting questionnaire-assessed QOL at least 12 months postoperatively were included. QOL means and standard deviations were compared between surgically and medically managed patients, between the preoperative and postoperative state of each patient, and were further stratified into patients achieving seizure freedom, and those who did not. Meta-analysis was performed using fixed effects models for weighted mean differences (WMD), 95% confidence intervals (CI) and sensitivity analyses. Funnel plots and Begg's tests were utilized to detect publication bias.

RESULTS

The search yielded 18 retrospective studies, reporting 890 surgical patients. Following epilepsy surgery, children had significant QOL improvement compared to their preoperative state (WMD: 16.71, 95% CI: 12.19-21.22, P < .001) and better QOL than matched medically treated controls (WMD: 12.42, 95% CI: 6.25-18.58, P < .001). Patients achieving total seizure freedom after surgery had significant postoperative QOL improvement (WMD: 16.12, 95% CI: 7.98-24.25, P < .001), but patients not achieving seizure freedom did not achieve statistical significance (P = .79).

CONCLUSION

Epilepsy surgery can effectively improve QOL in children with medication-resistant seizures, through seizure freedom, which was associated with the greatest improvement in life quality.

Impact of resective epilepsy surgery on health-related quality of life in children with and without low intellectual ability

OBJECTIVE

The current study examined pre- and postoperative health-related quality of life (HRQL) across children with and without low intellectual ability. We also aimed to clarify the literature on postsurgical change by assessing domain-specific HRQL pre- and postoperatively in children with drug-resistant epilepsy.

METHOD

All patients (n=111) underwent resective epilepsy surgery between 1996 and 2016 at the Hospital for Sick Children in Toronto, comparing baseline and 1-year follow-up HRQL with the Quality of Life in Childhood Epilepsy Questionnaire (QOLCE-76). At the group-level, postsurgical change in HRQL was examined through linear mixed-effects modeling. Clinically important change in HRQL at the individual level was quantified using a standard error of measurement (SEM)-based criterion, and estimates were stratified by intellectual ability.

RESULTS

Children with epilepsy and low intellectual ability had lower overall HRQL compared with those with normal intelligence (b=-10.45, SE=4.89, p=.035). No differences in change in HRQL related to intellectual level were found. In the broader sample, significant postoperative improvements were found for HRQL related to physical activity (b=8.28, SE=1.79, p<.001), social activity (b=15.81, SE=2.76, p<.001), and behavior (b=4.34, SE=1.35, p=.001). Postoperative improvements in physical and social HRQL were associated with better seizure control (p=.011). Conversely, cognitive and emotional domains of HRQL did not improve one year postoperatively, even in the presence of improved seizure control.

SIGNIFICANCE

Results suggest that children with low intellectual ability can expect to achieve similar improvements in HRQL after epilepsy surgery compared with those with normal intelligence. Further, while overall HRQL is shown to improve in children following epilepsy surgery, domain-specific change is nuanced and has important implications for health practitioners aiming to monitor treatment progress of patients.

Surgery for Drug-Resistant Epilepsy in Children

BACKGROUND

Neurosurgical treatment may improve seizures in children and adolescents with drug-resistant epilepsy, but additional data are needed from randomized trials.

METHODS

In this single-center trial, we randomly assigned 116 patients who were 18 years of age or younger with drug-resistant epilepsy to undergo brain surgery appropriate to the underlying cause of epilepsy along with appropriate medical therapy (surgery group, 57 patients) or to receive medical therapy alone (medical-therapy group, 59 patients). The patients in the medical-therapy group were assigned to a waiting list for surgery. The primary outcome was freedom from seizures at 12 months. Secondary outcomes were the score on the Hague Seizure Severity scale, the Binet-Kamat intelligence quotient, the social quotient on the Vineland Social Maturity Scale, and scores on the Child Behavior Checklist and the Pediatric Quality of Life Inventory.

RESULTS

At 12 months, freedom from seizures occurred in 44 patients (77%) in the surgery group and in 4 (7%) in the medical-therapy group (P<0.001). Between-group differences in the change from baseline to 12 months significantly favored surgery with respect to the score on the Hague Seizure Severity scale (difference, 19.4; 95% confidence interval [CI], 15.8 to 23.1; P<0.001), on the Child Behavior Checklist (difference, 13.1; 95% CI, 10.7 to 15.6; P<0.001), on the Pediatric Quality of Life Inventory (difference, 21.9; 95% CI, 16.4 to 27.6; P<0.001), and on the Vineland Social Maturity Scale (difference, 4.7; 95% CI, 0.4 to 9.1; P=0.03), but not on the Binet-Kamat intelligence quotient (difference, 2.5; 95% CI, -0.1 to 5.1; P=0.06). Serious adverse events occurred in 19 patients (33%) in the surgery group, including hemiparesis in 15 (26%).

CONCLUSIONS

In this single-center trial, children and adolescents with drug-resistant epilepsy who had undergone epilepsy surgery had a significantly higher rate of freedom from seizures and better scores with respect to behavior and quality of life than did those who continued medical therapy alone at 12 months. Surgery resulted in anticipated neurologic deficits related to the region of brain resection. (Funded by the Indian Council of Medical Research and others; Clinical Trial Registry-India number, CTRI/2010/091/000525 .).

Multivariate trajectories across multiple domains of health-related quality of life in children with new-onset epilepsy

The diagnosis of epilepsy in children is known to impact the trajectory of their health-related quality of life (HRQOL) over time. However, there is limited knowledge about variations in longitudinal trajectories across multiple domains of HRQOL. This study aims to characterize the heterogeneity in HRQOL trajectories across multiple HRQOL domains and to evaluate predictors of differences among the identified trajectory groups in children with new-onset epilepsy. Data were obtained from the Health Related Quality of Life in Children with Epilepsy Study (HERQULES), a prospective multi-center study of 373 children newly diagnosed with new-onset epilepsy who were followed up over 2years. Child HRQOL and family factors were reported by parents, and clinical characteristics were reported by neurologists. Group-based multi-trajectory modeling was adopted to characterize longitudinal trajectories of HRQOL as measured by the individual domains of cognitive, emotional, physical, and social functioning in the 55-item Quality of Life in Childhood Epilepsy Questionnaire (QOLCE-55). Multinomial logistic regression was used to assess potential factors that explain differences among the identified latent trajectory groups. Three distinct HRQOL trajectory subgroups were identified in children with new-onset epilepsy based on HRQOL scores: "High" (44.7%), "Intermediate" (37.0%), and "Low" (18.3%). While most trajectory groups exhibited increasing scores over time on physical and social domains, both flat and declining trajectories were noted on emotional and cognitive domains. Less severe epilepsy, an absence of cognitive and behavioral problems, lower parental depression scores, better family functioning, and fewer family demands were associated with a "Higher" or "Intermediate" HRQOL trajectory. The course of HRQOL over time in children with new-onset epilepsy appears to follow one of three different trajectories. Addressing the clinical and psychosocial determinants identified for each pattern can help clinicians provide more targeted care to these children and their families.

Child- and parent-reported quality of life trajectories in children with epilepsy: A prospective cohort study

OBJECTIVE

To describe the developmental trajectories of quality of life (QoL) in a large cohort of children with epilepsy, and to assess the relative contribution of clinical, psychosocial, and sociodemographic variables on QoL trajectories.

METHODS

Five assessments during a 28-month prospective cohort study were used to model trajectories of QoL. Participants were recruited with their parents from six Canadian tertiary centers. A convenience sample of 506 children aged 8-14 years with epilepsy and without intellectual disability or autism spectrum disorder were enrolled. A total of 894 children were eligible and 330 refused participation. Participating children were, on average, 11.4 years of age, and 49% were female. Nearly one third (32%) had partial seizures. At baseline, 479 and 503 child- and parent-reported questionnaires were completed. In total, 354 children (74%) and 366 parents (73%) completed the 28-month follow-up. QoL was measured using the child- and parent-reported version of the Childhood Epilepsy QoL scale (CHEQOL-25).

RESULTS

Child-reported QoL was fitted best by a six-class model and parent-reported QoL by a five-class model. In both models, trajectories remained either stable or improved over 28 months. Of these children, 62% rated their QoL as high or moderately high, defined as at least one standard deviation above the average CHEQOL-25 score. Greater family, classmate, and peer social support, fewer symptoms of child and parent depression, and higher receptive vocabulary were identified as the most robust predictors of better QoL (all p < 0.001).

SIGNIFICANCE

Most children with epilepsy and their parents reported relatively good QoL in this first joint self- and proxy-reported trajectory study. Findings confirm the heterogeneous QoL outcomes for children with epilepsy and the primary importance of psychosocial factors rather than seizure and AED-specific factors in influencing QoL. These predictors that are potentially amenable to change should now be the focus of specific intervention studies.

Long-term outcomes of epilepsy surgery in 85 pediatric patients followed up for over 10 years: a retrospective survey

OBJECTIVE The aim of this study was to investigate the treatment outcomes and social engagement of patients who had undergone pediatric epilepsy surgery more than 10 years earlier. METHODS Between 1983 and 2005, 110 patients younger than 16 years underwent epilepsy surgery at the National Epilepsy Center, Shizuoka Institute of Epilepsy and Neurological Disorders. The authors sent a questionnaire to 103 patients who had undergone follow-up for more than 10 years after surgery; 85 patients (82.5%) responded. The survey contained 4 categories: seizure outcome, use of antiepileptic drugs, social participation, and general satisfaction with the surgical treatment (resection of the epileptic focus, including 4 hemispherectomies). The mean patient age at the time of surgery was 9.8 ± 4.2 (SD) years, and the mean duration of postoperative follow-up was 15.4 ± 5.0 years. Of the 85 patients, 79 (92.9%) presented with a lesional pathology, such as medial temporal sclerosis, developmental/neoplastic lesions, focal cortical dysplasia, and gliosis in a single lobe. RESULTS For 65 of the 85 responders (76.5%), the outcome was recorded as Engel Class I (including 15 [93.8%] of 16 patients with medial temporal sclerosis, 20 [80.0%] of 25 with developmental/neoplastic lesions, and 27 [73.0%] of 37 with focal cortical dysplasia). Of these, 29 (44.6%) were not taking antiepileptic drugs at the time of our survey, 29 (44.6%) held full-time jobs, and 33 of 59 patients (55.9%) eligible to drive had a driver's license. Among 73 patients who reported their degree of satisfaction, 58 (79.5%) were very satisfied with the treatment outcome. CONCLUSIONS The seizure outcome in patients who underwent resective surgery in childhood and underwent followup for more than 10 years was good. Of 85 respondents, 65 (76.5%) were classified in Engel Class I. The degree of social engagement was relatively high, and the satisfaction level with the treatment outcome was also high. From the perspective of seizure control and social adaptation, resective surgery yielded longitudinal benefits in children with intractable epilepsy, especially those with a lesional pathology in a single lobe.

Personality traits of children before and after epilepsy surgery

We studied how children with epilepsy (CWE) who are candidates for epilepsy surgery, perceive themselves with respect to overarching personality traits and whether the traits change after surgery. We explored influences of demographic and illness variables. A total of 23 CWE [mean age at inclusion 12.8 (sd 2.3); 12 girls] participated. Using the Dutch Personality Questionnaire Juniors (DPQ-J), we assessed 20 of the CWE shortly before epilepsy surgery and compared the results to those of 39 age- and gender-matched healthy controls. Furthermore, we obtained follow-up scores 6, 12 and 24 months after epilepsy surgery from the clinical group. CWE who were candidates for epilepsy surgery scored above average in inadequacy, perseverance, social inadequacy and recalcitrance, whereas healthy peers scored average. Over the two years' period after epilepsy surgery we found no changes, apart from a decrease of social inadequacy. Sporadic illness and demographic variables were related to some personality traits. However, neither post-surgical seizure freedom nor cessation of AEDs did noticeably change the self-evaluations of CWE. Asking CWE to evaluate their personality themselves may offer a shared basis for individually tailored behavior intervention in order to help them adapting to their ameliorated circumstances after surgery.

Self-esteem in adolescents with epilepsy: Psychosocial and seizure-related correlates

PURPOSE

This study evaluated self-esteem in adolescents with epilepsy and its association with psychosocial and disease-related variables.

METHODS

This was a cross-sectional study with patients enrolled between January and June 2010. Culture-Free Self-Esteem Inventory for Children (CFSEI-2) was administered to 140 children with epilepsy and 50 children with asthma, aged 10-18years attending mainstream schools.

RESULTS

Adolescents with epilepsy had a significantly lower overall self-esteem score when compared with those with asthma, 17±5.21 versus 19.4±3.83, respectively (P=0.005). Thirty-one (22.1%) children with epilepsy compared with 4 (8.3%) with asthma had overall self-esteem score below the cutoff (P=0.034). There was a significant correlation between overall self-esteem score and duration of epilepsy, Hospital Anxiety and Depression Scale (HADS) anxiety score, HADS depression score, and Strengths and Weaknesses of ADHD symptoms and Normal-Behaviors (SWAN) rating combined score. The impact of various correlates on individual domains was not identical. Independent factors associated with low overall self-esteem were HADS depression score (OR: 1.62; 95% CI: 1.2, 2.2; P=0.002), duration of epilepsy (OR: 1.4; 95% CI: 1.04, 1.88; P=0.024), and father employment status economically inactive (OR: 11.9; 95% CI: 1.07, 125; P=0.044). Seizure-free ≥12months was a favorable factor that was less likely to be associated with low self-esteem (OR: 0.14; 95% CI: 0.02, 0.81; P=0.028).

CONCLUSION

Self-esteem was compromised in adolescents with epilepsy. A significant correlation between self-esteem and psychological comorbidities was demonstrated. Enhancing social support and education programs may improve the self-esteem and, ultimately, the lives of adolescents living with epilepsy.

Development of the PedsQL™ Epilepsy Module: Focus group and cognitive interviews

Youth with epilepsy have impaired health-related quality of life (HRQOL). Existing epilepsy-specific HRQOL measures are limited by not having parallel self- and parent-proxy versions, having a restricted age range, not being inclusive of children with developmental disabilities, or being too lengthy for use in a clinical setting. Generic HRQOL measures do not adequately capture the idiosyncrasies of epilepsy. The purpose of the present study was to develop items and content validity for the PedsQL™ Epilepsy Module.

METHODS

An iterative qualitative process of conducting focus group interviews with families of children with epilepsy, obtaining expert input, and conducting cognitive interviews and debriefing was utilized to develop empirically derived content for the instrument. Eleven health providers with expertise in pediatric epilepsy from across the country provided feedback on the conceptual model and content, including epileptologists, nurse practitioners, social workers, and psychologists. Ten pediatric patients (age 4-16years) with a diagnosis of epilepsy and 11 parents participated in focus groups. Thirteen pediatric patients (age 5-17years) and 17 parents participated in cognitive interviews.

RESULTS

Focus groups, expert input, and cognitive debriefing resulted in 6 final domains including restrictions, seizure management, cognitive/executive functioning, social, sleep/fatigue, and mood/behavior. Patient self-report versions ranged from 30 to 33 items and parent proxy-report versions ranged from 26 to 33 items, with the toddler and young child versions having fewer items.

CONCLUSIONS

Standardized qualitative methodology was employed to develop the items and content for the novel PedsQL™ Epilepsy Module. The PedsQL™ Epilepsy Module has the potential to enhance clinical decision-making in pediatric epilepsy by capturing and monitoring important patient-identified contributors to HRQOL.

Self-concept and gender effects in Korean adolescents with epilepsy

PURPOSE

We aimed to determine whether adolescents with epilepsy (AWE) have a compromised self-concept, whether a lower self-concept is related to mental health, and whether there are sex differences in self-concept in AWE.

METHODS

A total of 179 AWE and 259 control adolescents without epilepsy participated in this cross-sectional, multicenter study. Self-concept was measured using the Harter's Self-Perception Profile for Children. Depressive symptoms and anxiety were assessed by the Hospital Anxiety Depression Scale (HADS). A group-by-sex interaction was evaluated using an analysis of covariance controlling for age.

RESULTS

Adolescents with epilepsy had a lower level of self-concept, especially in domains of behavioral conduct (partial eta(2): 0.257) and social acceptance (partial eta(2): 0.116), than controls (p<0.05). The level of self-concept did not differ by sex in the group with epilepsy. A group-by-sex interaction effect was found on social acceptance (p=0.042). Unlike the control group, age was not correlated with self-concept in AWE. Physical appearance was negatively correlated with HADS-anxiety scores (r=-0.291, p<0.01) but only in girls with epilepsy. Epilepsy duration was correlated with social acceptance in boys (r=0.211, p<0.05) and physical appearance in girls (r=-0.249, p<0.05).

CONCLUSIONS

Adolescents with epilepsy had a lower level of self-concept, especially in the domains of behavioral conduct and social acceptance, than controls. Sex differences in self-concept were identified in the control group but not in the group with epilepsy. Physical appearance was negatively correlated with anxiety in girls with epilepsy.

Psychosocial factors associated with in postsurgical prognosis of temporal lobe epilepsy related to hippocampal sclerosis

We examined the long-term psychosocial trajectory in a consecutive and homogeneous series of 120 patients followed up for five years after corticoamygdalohippocampectomy (CAH). Evaluation of psychosocial variables at baseline and at five-year follow-up were compared. After five years of CAH, a significant improvement in educational level (p=0.004) and employment status (p<0.001) was observed, although retirement (p<0.001) and divorce (p=0.021) rates increased. In a long-term follow-up, a tendency to have similar QOL profile was observed between Engel classes IA and IB (p>0.05). A more favorable surgical outcome (Engel IA) was related to better psychiatric status (p=0.012). Poor psychosocial adjustment before surgery was the most important predictor of QOL outcome (p<0.05). Patients' trajectory after surgical treatment showed positive effects mainly in those with better seizure outcome. Our results emphasized the influence regarding baseline psychosocial functioning on postoperative psychosocial adjustment. Furthermore, many psychosocial gains and difficulties after surgery may be similar in developing and developed countries.

High frequency oscillations in the intra-operative ECoG to guide epilepsy surgery ("The HFO Trial"): study protocol for a randomized controlled trial

Background

Intra-operative electrocorticography, based on interictal spikes and spike patterns, is performed to optimize delineation of the epileptogenic tissue during epilepsy surgery. High frequency oscillations (HFOs, 80–500 Hz) have been identified as more precise biomarkers for epileptogenic tissue. The aim of the trial is to determine prospectively if ioECoG-tailored surgery using HFOs, instead of interictal spikes, is feasible and will lead to an equal or better seizure outcome.

Methods\Design

We present a single-blinded multi-center randomized controlled trial “The HFO Trial” including patients with refractory focal epilepsy of all ages who undergo surgery with intra-operative electrocorticography. Surgery is tailored by HFOs (arm 1) or interictal spikes (arm 2) in the intra-operative electrocorticography. Primary outcome is post-operative outcome after 1 year, dichotomized in seizure freedom (Engel 1A and 1B) versus seizure recurrence (Engel 1C-4). Secondary outcome measures are the volume of resected tissue, neurologic deficits, surgical duration and complications, cognition and quality of life. The trial has a non-inferiority design to test feasibility and at least equal performance in terms of surgical outcome. We aim to include 78 patients within 3 years including 1 year follow-up. Results are expected in 2018.

Discussion

This trial provides a transition from observational research towards clinical interventions using HFOs. We address methodological difficulties in designing this trial. We expect that the use of HFOs as a biomarker for tailoring will increase the success rate of epilepsy surgery while reducing resection volume. This may reduce neurological deficits and yield a better quality of life. Future technical developments, such as validated automatic online HFO identification, could, together with the attained clinical knowledge, lead to a new objective tailoring approach in epilepsy surgery.

Trial registration

This trial is registered at the US National Institutes of Health (ClinicalTrials.gov) #NCT02207673 (31 July 2014) and the Central Committee on Research Involving Human Subjects, The Netherlands #NL44257.041.13 (18 March 2014).

"A journey around the world": Parent narratives of the journey to pediatric resective epilepsy surgery and beyond

OBJECTIVE

Although shorter time to pediatric resective epilepsy surgery is strongly associated with greater disease severity, other nonclinical diagnostic and sociodemographic factors also play a role. We aimed to examine parent-reported barriers to timely receipt of pediatric epilepsy surgery.

METHODS

We conducted 37 interviews of parents of children who previously had resective epilepsy surgery at University of California Los Angeles (UCLA; 2006-2011). Interviews were audio-recorded, transcribed, and systematically coded using thematic analysis by two independent coders, and subsequently checked for agreement. Clinical data, including "time to surgery" (age of epilepsy onset to surgery) were abstracted from medical records.

RESULTS

The mean time to surgery was 5.3 years (standard deviation [SD] 3.8); surgery types included 32% hemispherectomy, 43% lobar/focal, and 24% multilobar. At surgery, parents were on average 38.4 years (SD 6.6) and children were on average 8.2 years (SD 4.7). The more arduous and longer aspect of the journey to surgery was perceived by parents to be experienced prior to presurgical referral. The time from second antiepileptic drug failure to presurgical referral was ≥ 1 year in 64% of children. Thematic analysis revealed four themes (with subthemes) along the journey to surgery and beyond: (1) recognition--"something is wrong" (unfamiliarity with epilepsy, identification of medical emergency); (2) searching and finding--"a circuitous journey" (information seeking, finding the right doctors, multiple medications, insurance obstacles, parental stress); (3) surgery is a viable option--"the right spot" (surgery as last resort, surgery as best option, hoping for candidacy); and (4) life now--"we took the steps we needed to" (a new life, giving back).

SIGNIFICANCE

Multipronged interventions targeting parent-, provider-, and system-based barriers should focus on the critical presurgical referral period; such interventions are needed to remediate delays and improve access to subspecialty care for children with medically refractory epilepsy and potentially eligible for surgery.

Outcomes of epilepsy surgery in childhood-onset epileptic encephalopathy

PURPOSE

to evaluate the outcomes and role of epilepsy surgery in children with intractable epileptic encephalopathy (EE).

METHODS

ninety-five children (64 boys, 31 girls) with intractable EE were treated by epilepsy surgery at Severance Children's Hospital from 2003 to 2008. Surgical treatments included lobar resection, hemispherotomy and corpus callosotomy (CC). Seventy-six children were Lennox-Gastaut syndrome (LGS), and 19 had West syndrome.

RESULTS

of the 76 patients with LGS, CC was performed in 37 patients (48.7%), lobar resection in 29 (38.2%) and hemispherotomy in 10 (13.2%). Of the 19 patients with West syndrome, respective surgery was performed in 15 patients (78.9%) and CC in 4 (21.1%). Of the patients receiving respective surgery, Engel's class I outcomes were achieved for 24 of 39 (61.5%) of LGS patients, and for 9 of 15 (60.0%) of West syndrome. Malformations of cortical development were commonly observed, appearing in 73.5% (36/49). In neuropsychiatric tests, 19 of 27 with LGS demonstrated improvement in postoperative cognitive function. More significant intellectual improvement correlated well with shorter epilepsy duration, good seizure outcomes, and decreased number of antiepileptic drugs.

CONCLUSIONS

epilepsy surgery should be considered in treating childhood intractable EE with expectation of improvement of both seizure and cognitive outcomes, even in cases of LGS.

Epilepsy surgery in pediatric intractable epilepsy with destructive encephalopathy

Background and Purpose:

The aim of the current study is to review the clinical features, surgery outcomes and parental satisfaction of children with destructive encephalopathy who underwent epilepsy surgery due to medically intractable seizures.

Methods:

48 patients who underwent epilepsy surgery from October 2003 to August 2011 at Severance Children’s Hospital have been reviewed. The survey was conducted for functional outcomes and parental satisfaction at least 1 year after the surgery.

Results:

Epileptic encephalopathy including Lennox-Gastaut syndrome and infantile spasms was more prevalent than symptomatic focal epilepsy. Hypoxic ischemic injury accounted for most of the underlying etiology of the destructive encephalpathy, followed by central nervous system infection and head trauma. 27 patients (56.3%) underwent resective surgery and 21 patients (43.7%) underwent palliative surgery. 16 patients (33.3%) achieved seizure free and 27 parents (87.5%) reported satisfaction with the outcome of their children’s epilepsy surgery. In addition, 14 parents (77.8 %) whose children were not seizure free reported satisfaction with their children’s improvement in cognitive and behavior issues.

Conclusions:

Epilepsy surgery in destructive encephalopathy was effective for controlling seizures. Parents reported satisfaction not only with the surgical outcomes, but also with improvement of cognitive and behavior issues.

Trajectories of health-related quality of life in children with epilepsy: a cohort study

PURPOSE

Little is known about subgroups of children with epilepsy who may experience less favorable outcomes over time. The objectives of this study were to document trajectories of health-related quality of life (HRQL) and to identify predictors of the trajectory group in children with new-onset epilepsy.

METHODS

Data were obtained from the Health Related Quality of Life in Children with Epilepsy Study, a prospective multisite study of children 4-12 years old with new-onset epilepsy followed for 24 months. Health-related quality of life was measured using the Quality of Life in Childhood Epilepsy questionnaire. Trajectories of HRQL were investigated using latent class trajectory modeling. Multinomial logistic regression was used to identify child, parent, and family predictors of HRQL trajectories.

KEY FINDINGS

A total of 374 families responded at baseline and 283 (76%) completed the study. Five HRQL trajectories were observed: low-increasing (4%), moderate-decreasing (12%), moderate-increasing (22%), high-increasing (32%), and high-stable (30%). Many children in the low-increasing, moderate-increasing, high-increasing, and high-stable had clinically meaningful improvements in HRQL: 82%, 47%, 63%, and 44%, respectively. In contrast, the majority of children in the moderate-decreasing group (56%) experienced clinically meaningful declines in their HRQL. Factors predicting trajectories were number of antiepileptic drugs prescribed, presence of comorbid behavior or cognitive problems, parent depression, and family functioning and demands.

SIGNIFICANCE

Results suggested that children with epilepsy are not homogenous but rather consist of groups with different trajectories and unique predictors of HRQL. Problems associated with child behavior and cognition were the strongest predictors identified. Given that several risk factors are modifiable, it is important to examine these as potential targets within a family-centered framework to improve HRQL of children with new-onset epilepsy.

Health-related quality of life before and after pediatric epilepsy surgery: the influence of seizure outcome on changes in physical functioning and social functioning

Health-related quality of life (HRQOL) is an important outcome in pediatric epilepsy surgery, but there are few studies that utilize presurgical ratings to assess the effect of surgery on HRQOL. We collected parental ratings on the Quality of Life in Childhood Epilepsy (QOLCE) questionnaire for 28 children who participated in neuropsychological assessment before and after epilepsy surgery. Our results revealed significant improvements in overall HRQOL after surgery, especially in physical and social activities. These changes were apparent despite generally unchanged intellectual and psychological functioning. Children with better seizure outcome had more improvement in HRQOL; however, improvements were not statistically different among children with Engel class I, II, and III outcomes. Our results suggest that children can experience significant improvements in HRQOL following epilepsy surgery even when neuropsychological functioning remains unchanged. Moreover, improvements in HRQOL appear evident in children who experience any worthwhile improvement in seizure control (Engel class III or better).

The role of epilepsy surgery in the treatment of childhood epileptic encephalopathy

Children with epileptic encephalopathy often have global impairment of brain function and frequent intractable seizures, which contribute further to their developmental disability. Many of these children have identifiable brain lesion on neurological imaging. In such cases, epilepsy surgery may be considered as a treatment option despite the lack of localized epileptic pattern on electroencephalogram (EEG). In this paper, we summarize the clinical features of epileptic encephalopathy syndromes and review the reported literature on the surgical approach to some of these disorders.

Time to pediatric epilepsy surgery is related to disease severity and nonclinical factors

OBJECTIVE

To identify clinical and nonclinical factors associated with time from epilepsy onset to surgical evaluation and treatment among a cohort of children having epilepsy surgery.

METHODS

Data were abstracted from records of 430 children (younger than 18 years) who had epilepsy neurosurgery at the University of California, Los Angeles from 1986 to 2010. Multivariable Cox proportional hazards models were used to analyze unique associations of clinical severity, pre-referral brain MRI, and sociodemographic characteristics with time to surgery.

RESULTS

Shorter time to surgery was associated with active (hazard ratio [HR] 5.67, 95% confidence interval [CI] 3.74-8.70) and successfully treated infantile spasms (HR 2.20, 95% CI 1.63-2.96); daily or more seizures (HR 2.09, 95% CI 1.58-2.76); MRI before referral regardless of imaging findings (HR 1.95, 95% CI 1.47-2.58); private insurance (HR 1.54, 95% CI 1.14-2.09); and Hispanic ethnicity (HR 1.38, 95% CI 1.01-1.87). There were race/ethnicity by insurance interactions (log-rank p = 0.049) with shortest time to surgery for Hispanic children with private insurance.

CONCLUSIONS

Shorter intervals to surgical treatment were associated with greater epilepsy severity and insurance type, consistent with existing literature. However, associations of shorter times to treatment with having a brain MRI before referral and Hispanic ethnicity were unexpected and warrant further investigation. More knowledgeable referring providers and parents with greater help-seeking capability may explain obtaining an MRI before referral. Shorter intervals to surgery among Hispanic children may relate to the same factors yielding an increased volume of Hispanic children receiving surgery at the University of California, Los Angeles since 2000.

Characterization of the supplementary motor area syndrome and seizure outcome after medial frontal lobe resections in pediatric epilepsy surgery

BACKGROUND

In adults, resection of the medial frontal lobe has been shown to result in supplementary motor area (SMA) syndrome, a disorder characterized by transient motor impairment. Studies examining the development of SMA syndrome in children, however, are wanting.

OBJECTIVE

To characterize the development of SMA syndrome and to analyze seizure outcomes after surgery in the medial frontal lobe for medically intractable epilepsy.

METHODS

Thirty-nine patients with medically intractable epilepsy who underwent surgery in the medial frontal lobe were reviewed retrospectively. The progression of neurological impairment and seizure outcome after surgery was recorded, and the extent of cortex resected was analyzed.

RESULTS

After resection in the region of the SMA, 23 patients (59%) developed postoperative neurological impairment; 17 (74%) were identified as SMA syndrome. No neurological impairment was found after surgery in 16 patients (41%). Six patients (15%) experienced permanent neurological impairment. The majority of patients (82%) who developed SMA syndrome had resolution of their symptoms by 1 month postoperatively. Preoperative magnetic resonance imaging finding of lesional cases was associated with a significantly decreased likelihood of developing SMA syndrome (P = .02). Seizure outcome was favorable after surgery in most patients.

CONCLUSION

Surgery for medically intractable epilepsy in the region of the medial frontal cortex is effective and associated with reversible neurological impairment in children. All patients had resolution of their SMA syndrome by 6 months postoperatively.

Quality of life in young adults who underwent resective surgery for epilepsy in childhood

PURPOSE

This study investigated quality of life (QOL) in young adults who had undergone epilepsy surgery before the age of 16 years. The contribution to QOL of seizure status in the prior year, sex, number of antiepileptic drugs, and mood were evaluated.

METHODS

Sixty-nine young adults who had undergone surgery were subdivided into those who were seizure-free in the past year (n = 38) and those who had seizures (n = 31) in that time. A nonsurgical comparison group of young adults (n = 29) with childhood-onset medically intractable epilepsy was also studied. All groups completed measures of QOL and mood.

KEY FINDINGS

After accounting for mood, sex, and number of antiepileptic drugs, the seizure-free group reported better cognitive and physical function and overall QOL, experienced less seizure worry, and had better self-perception. Mood was the most consistently predictive covariate, and was independently predictive of many aspects of QOL.

SIGNIFICANCE

Seizure freedom associated with surgery in childhood is associated with improved QOL in certain domains. Findings highlight the importance of mood in determining self-perception of QOL.

Ethical issues in surgical decision making concerning children with medically intractable epilepsy

The widespread inclusion of surgical strategies in the treatment of medically intractable epilepsy is largely justified by the medical and psychosocial burden of the illness. Performing these procedures in pediatric populations is associated with distinct challenges ranging from unique seizure etiologies to issues surrounding brain development and functional plasticity. As the trend toward more aggressive surgical intervention continues, the ethical foundation of current and emerging practices must be increasingly scrutinized. Here, we present the first article discussing ethical issues in the surgical management of medically intractable epilepsies in children. We discuss principles of informed consent, harm reduction, and justice in this vulnerable patient population. We also highlight the unique ethical challenge of surgical decision making concerning developmentally delayed children. The recognition of these issues is essential to providing patient-centered, responsible, and ethical care.

Long-term intellectual outcome after temporal lobe surgery in childhood

OBJECTIVE

Temporal lobe resection is an established treatment for medication-resistant temporal lobe epilepsy, which in recent years has increasingly been performed in children. However, little is known about the long-term outcome in these children. The aim of this study was to characterize intellectual and psychosocial functioning of children after temporal lobe resection as they progress into late adolescence and adulthood.

METHODS

We report the long-term follow-up of 42 children who underwent temporal lobe surgery after an average postoperative period of 9 years. Longitudinal change in IQ was documented, psychosocial outcome including quality of life was assessed, and preoperative and postoperative T1-weighted MRI brain scans were evaluated quantitatively. A well-matched nonsurgical comparison group of 11 children with similar clinical characteristics was also assessed.

RESULTS

At follow-up, 86% of the surgical group were seizure-free, and 57% were no longer taking antiepileptic medication. A significant increase in IQ was found in the surgical group after an extended follow-up period of >5 years. This IQ change was not found in the nonsurgical comparison group. IQ increases were associated with cessation of antiepileptic medication and changes in MRI-derived gray matter volume. The surgical group also reported better psychosocial outcome including quality of life, which was more strongly associated with seizure freedom rather than surgery per se.

CONCLUSIONS

Surgery for temporal lobe epilepsy performed in childhood results in excellent long-term seizure control and favorable cognitive outcome along with positive effects on brain development.

CLASSIFICATION OF EVIDENCE

This study provides Class III evidence that temporal lobectomy in children with temporal lobe epilepsy is associated with improved long-term intellectual outcomes compared with those undergoing standard medical treatment.

Quality of life following epilepsy surgery for children with tuberous sclerosis complex

Parents of children with tuberous sclerosis complex who underwent multistage resections for treatment of refractory seizures were offered a telephone questionnaire regarding quality of life (QOL) of child and family since surgery. Of 53 families, 39 responded. Age at epilepsy onset was birth to 3 months. Average duration of epilepsy before the first surgery was 5.1 years, and average age at surgery was 5.8. The average follow-up was 3.9. Seventy-seven percent had a >90% reduction in disabling seizures. In all outcome categories, 46-85% had at least a moderate improvement in QOL. There was a significant correlation between QOL variables and Engel outcome class. Despite the potential burden posed by the aggressive surgical approach, including multiple surgeries and long hospitalization periods, 94% of parents would choose the same course once again. We conclude that aggressive surgical treatment of tuberous sclerosis complex-related refractory seizures is associated with significant control of epilepsy as well as improved QOL for the patient and family.

Quality of life and epilepsy surgery in childhood and adolescence

Epilepsy can affect the quality of life (QOL) of patients. The temporal lobe epilepsy (TLE) is often refractory to medication, which has an adverse impact on QOL. The surgery can be a form to control the seizures and to improve the QOL of the patients. OBJECTIVE: The aim of this study was to verify the QOL of children and adolescents with TLE who underwent surgery for epilepsy, comparing QOL before and after surgery and investigating which parameters showed improvement. METHOD: We used semi-structured questionnaire in the pre-and post-surgery in 13 patients. The data were analyzed using the Wilcoxon test. RESULTS: The analysis showed that there was general improvement in the QOL postoperatively. There was improvement in general health issues, adverse effects of antiepileptic drugs and the relationship with parents. CONCLUSION: When properly indicated, epilepsy surgery improves quality of life of patients with TLE.

Self-perceptions of social function 2 years after pediatric epilepsy surgery

The present qualitative study explored how participants perceive their quality of life within the social domain 2 years following epilepsy surgery. Semistructured, open-ended interviews were conducted with 27 participants (11-21 years old), 2 years following epilepsy surgery. Thirteen of the 27 participants were seizure free. Data were transcribed and coded inductively to allow for the identification of salient themes. Many of the seizure-free participants reported greater independence following surgery. However, most participants, irrespective of seizure status, continued to report some problems with peer relations and isolation. These findings suggest that self-perceived improvements in social function among seizure-free participants may require longer than 2 years to develop.

Brief report: The KIDSCREEN follow-up study on Health-related Quality of Life (HRQoL) in Spanish children and adolescents. Pilot test and representativeness

The Spanish KIDSCREEN follow-up study reassessed the Spanish baseline sample (n=840) of the European KIDSCREEN study 3 years later (2006). The aims of this paper were to describe the KIDSCREEN follow-up study and the pilot test, and to analyze participation rates and representativeness. Instruments included the KIDSCREEN-52 HRQoL measure and a set of scales including the possible explanatory variables. Focus groups and individual interviews were carried out in a pilot test. Participants were compared with non-participants at baseline, and also with Eurostat census data. Twenty-two out of 24 subjects were interviewed in the pilot test. Fifteen items needed to be modified after the pilot test. Participation rate reached 54% (n=454). Participants (mean age=12.71 years old) were on average 6 months younger than non-participants (p=0.03), and from more educated families. KIDSCREEN follow-up instrumentation seems adequate for collecting factors with potential influence on HRQoL. Follow-up respondents' representativeness seems to be acceptable.