Evaluation of a Seizure Action Plan in an Adult Epilepsy Center.

Background: Seizure action plans (SAPs) provide valuable information for patients to manage seizure emergencies, but are underutilized in adult epilepsy centers. The purpose of this project was to implement a structured SAP for adult patients with epilepsy. Methods: A pre/postimplementation design was used. Provider SAP utilization rates were analyzed over a 16-week period. A pre and postimplementation survey assessed participant perceived impact of the SAP on knowledge and comfort associated with managing seizure emergencies. Provider barriers and facilitators were also assessed. Results: Average provider SAP utilization rate was 51.45%. A total of 204 participants completed the surveys, which showed a significant increase in knowledge and comfort for all items, p < 0.001. At postsurvey analysis, 98% of participants felt that all patients with epilepsy should have a SAP regardless of seizure burden. Discussion: Implementing a structured SAP increased provider utilization and patient and care partner knowledge and comfort of managing seizure emergencies.

Outcomes following a multi-disciplinary pediatric-to-adult transition and transfer clinic at a level four epilepsy center.

OBJECTIVE: Transition and transfer from the pediatric to adult care model is crucial to the continued long-term health and well-being of patients impacted by life-long diseases. This project explores the impact of a novel epilepsy transition collaboration between Nationwide Children's Hospital (NCH) and Ohio State University (OSU) Wexner Medical Center. METHODS: We retrospectively analyzed the characteristics and outcomes of 56 consecutive patients transferred to an adult health care system. These patients were divided into two groups. A cohort of 23 patients transferred in 2019 prior to clinic implementation were compared to a cohort of 33 consecutive patients transferred in 2019 and early 2020 using the epilepsy transition and transfer clinic model. Data points of interest included demographic information, age at transfer, epilepsy diagnosis, pharmacoresistance of epilepsy, surgical history and compliance with follow-up. RESULTS: Patients transferred to OSU through the transition clinic were statistically more likely to be followed at OSU (p = .037) within 6 months (p = .013). Additionally, there was improved patient retention at OSU following transition clinic implementation (p = .037). SIGNIFICANCE: Data demonstrating statistically significant improvement in care has not been reported for an epilepsy transition clinic. This study establishes that our novel approach improves continuity of care in this at-risk population. Our clinic model also successfully transitioned and transferred medically complex patients, including those with pharmacoresistant and/or genetically mediated epilepsy. Additionally, this work suggests that this clinic structure has potential to foster the growth of associated adult epilepsy subspecialty practices. These findings are encouraging as they offer potential for improved health care in the youth and young adult epilepsy population.

Radiofrequency Energy and Electrode Proximity Influences Stereoelectroencephalography-Guided Radiofrequency Thermocoagulation Lesion Size: An In Vitro Study with Clinical Correlation.

BACKGROUND: Radiofrequency thermocoagulation of epileptogenic foci via stereoelectroencephalography (SEEG) electrodes has been suggested as a treatment for medically intractable epilepsy, but reported outcomes have been suboptimal, possibly because lesions generated using conventional high-energy radiofrequency parameters are relatively small. OBJECTIVE: To describe a technique of delivering low energy across separate SEEG electrodes in order to create large confluent radiofrequency lesions. METHODS: The size and configuration of radiofrequency lesions using different radiofrequency intensity and interelectrode distance was assessed in egg whites. Magnetic resonance images (MRI) from 3 patients who had undergone radiofrequency lesion creation were evaluated to determine the contribution of lesion intensity and electrode separation on lesion size. Electroencephalography, MRI, and clinical data were assessed before and after lesion creation. RESULTS: Both in Vitro and in Vivo analysis revealed that less energy paradoxically produced larger lesions, with the largest possible lesions produced when radiofrequency power was applied for long duration at less than 3 W. Linear separation of electrodes also contributed to lesion size, with largest lesions produced when electrodes were separated by a linear distance of between 5 and 12 mm. Clinical lesions produced using these parameters were large and resulted in improvement in interictal and ictal activity. CONCLUSION: Radiofrequency lesions produced using low-energy delivery between SEEG electrodes in close proximity can produce a large lesion. These findings might have advantages for treatment of focal epilepsy.

Generalized Periodic Discharges With and Without Triphasic Morphology.

PURPOSE: Generalized periodic discharges (GPDs) with a triphasic morphology have been associated with nonepileptic encephalopathies. We conducted the study to assess the reliability in which electroencephalographers can differentiate triphasic from nontriphasic periodic discharges and to evaluate for the presence of electroencephalogram and clinical characteristics that are associated with a higher risk of seizures. METHODS: We studied prospectively 92 patients between May 2016 and February 2017. Each pattern was analyzed by two readers, who were blinded to clinical data. RESULTS: The interrater agreement was "substantial" (Kappa 0.67). The following features significantly increased the risk of developing seizures: the absence of triphasic morphology, focality on electroencephalogram, interburst suppression, a history of epilepsy, and an abnormal scan. The "GPD score" includes a history of epilepsy, focality on electroencephalogram, and the absence of triphasic morphology. A GPD score of 0 has 13% risk of seizures, whereas a score of 5 to 6 has a 94% risk. CONCLUSIONS: Triphasic morphology GPDs confer less risk of seizures when compared with patients with GPDs without triphasic morphology. Features with a higher risk of seizures include focality on electroencephalogram, interburst suppression, a history of epilepsy, and an abnormal scan. The GPD score can be used to assess the risk of developing seizures in patients with GPDs.