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Pan E, Piazza MG, Kellogg RJ, Wisniewski S, Abel TJ. A survey of preferences and expectations for surgical interventions targeting atonic seizures in Lennox-Gastaut syndrome. Childs Nerv Syst 2024; 40:2491-2495. [PMID: 38717604 DOI: 10.1007/s00381-024-06397-6] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/07/2023] [Accepted: 04/06/2024] [Indexed: 07/25/2024]
Abstract
PURPOSE To assess preferences and outcome expectations for vagus nerve stimulation (VNS) and corpus callosotomy (CC) surgeries in the treatment of atonic seizure in Lennox-Gastaut syndrome (LGS). METHODS A total of 260 surveys were collected from patients are caregivers of LGS patients via Research Electronic Data Capture (REDCap). RESULTS Respondents reported an average acceptable atonic seizure reduction rate of 55.9% following VNS and 74.7% following CC. 21.3% (n = 50) were willing to be randomized. Respondents reported low willingness for randomization and a higher seizure reduction expectation with CC. CONCLUSION Our findings guide surgical approaches for clinicians to consider patient preference in order to design future studies comparing effectiveness between these two procedures.
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Affiliation(s)
- Evelyn Pan
- Department of Neurological Surgery, University of Pittsburgh, 4401 Penn Ave, Fl 4, Pittsburgh, PA, USA
| | - Martin G Piazza
- Department of Neurological Surgery, University of Pittsburgh, 4401 Penn Ave, Fl 4, Pittsburgh, PA, USA
| | - Robert J Kellogg
- Department of Neurological Surgery, University of Pittsburgh, 4401 Penn Ave, Fl 4, Pittsburgh, PA, USA
| | - Steven Wisniewski
- Epidemiology Data Center, University of Pittsburgh, Pittsburgh, PA, USA
| | - Taylor J Abel
- Department of Neurological Surgery, University of Pittsburgh, 4401 Penn Ave, Fl 4, Pittsburgh, PA, USA.
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Cui CK, Wong WK, Wong CH, Gill D, Fong MWK. Case Report: Focal, generalized, or both: does generalized network involvement preclude successful epilepsy surgery? FRONTIERS IN NETWORK PHYSIOLOGY 2024; 4:1425329. [PMID: 39055857 PMCID: PMC11269090 DOI: 10.3389/fnetp.2024.1425329] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 04/29/2024] [Accepted: 06/20/2024] [Indexed: 07/28/2024]
Abstract
We present two cases with focal seizures where scalp electroencephalography (EEG) had prominent features of a developmental and epileptic encephalopathy (DEE): Case 1: a 17-year-old male with complex motor seizures whose EEG demonstrated a slow spike-and-wave pattern and generalized paroxysmal fast activity (GPFA). Case 2: a 12-year-old male with startle-induced asymmetric tonic seizures whose EEG also had a slow spike-and-wave pattern. Both patients had intracranial EEG assessment, and focal cortical resections resulted in long-term seizure freedom and resolution of generalized findings. These cases exemplify patients with focal epilepsy with networks that share similarities to generalized epilepsies, and importantly, these features did not preclude curative epilepsy surgery.
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Affiliation(s)
- Cathy K. Cui
- Westmead Comprehensive Epilepsy Centre, The University of Sydney, Sydney, NSW, Australia
| | - Wui-Kwan Wong
- Westmead Comprehensive Epilepsy Centre, The University of Sydney, Sydney, NSW, Australia
- T. Y. Nelson Department of Neurology and Neurosurgery, The Children’s Hospital at Westmead, Sydney, NSW, Australia
| | - Chong H. Wong
- Westmead Comprehensive Epilepsy Centre, The University of Sydney, Sydney, NSW, Australia
- T. Y. Nelson Department of Neurology and Neurosurgery, The Children’s Hospital at Westmead, Sydney, NSW, Australia
| | - Deepak Gill
- Westmead Comprehensive Epilepsy Centre, The University of Sydney, Sydney, NSW, Australia
- T. Y. Nelson Department of Neurology and Neurosurgery, The Children’s Hospital at Westmead, Sydney, NSW, Australia
| | - Michael W. K. Fong
- Westmead Comprehensive Epilepsy Centre, The University of Sydney, Sydney, NSW, Australia
- T. Y. Nelson Department of Neurology and Neurosurgery, The Children’s Hospital at Westmead, Sydney, NSW, Australia
- Department of Neurology, Comprehensive Epilepsy Center, Yale University School of Medicine, New Haven, CT, United States
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Na JH, Lee YM. Therapeutic outcome of patients with Lennox-Gastaut syndrome with mitochondrial respiratory chain complex I deficiency. Front Neurol 2024; 15:1305404. [PMID: 38529040 PMCID: PMC10962681 DOI: 10.3389/fneur.2024.1305404] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/01/2023] [Accepted: 01/31/2024] [Indexed: 03/27/2024] Open
Abstract
Background Lennox-Gastaut syndrome (LGS), a severe developmental epileptic encephalopathy, has various underlying causes. Mitochondrial respiratory chain complex I (MRC I) deficiency is an important cause of metabolic disorders such as mitochondrial dysfunction that can compromise brain function, thereby causing intractable epilepsy, including LGS. Thus, it can be expected that the presence or absence of MRC I deficiency may affect the treatment outcome of patients with LGS. Objectives In this retrospective study, we aimed to investigate differences in the epilepsy characteristics and treatment outcomes between patients with LGS with and without MRC I deficiency. Methods We retrospectively reviewed the medical records of 92 patients with LGS. We divided 68 patients with LGS according to the presence (n = 30) or absence (n = 38) of MRC I deficiency and compared their epilepsy characteristics. Results Generalized tonic and drop seizures were significantly worse in patients with LGS and MRC I deficiency than in those without MRC I deficiency group at the 1-year follow-up (p < 0.001) and final follow-up 1 (p < 0.001). Patients with LGS and MRC I deficiency had significantly fewer electroencephalogram (EEG) improvements compared to those without MRC I deficiency at the 1-year follow-up (p = 0.031). Additionally, in the final follow-up period, patients with LGS and MRC I deficiency had significantly less improvement in EEG findings compared to patients without MRC I deficiency (p < 0.001). Conclusion The overall treatment prognosis-in terms of improvement in traumatic generalized tonic seizure, drop seizure, and EEG findings-is worse in patients with LGS and MRC I deficiency than that in patients with LGS but without MRC I deficiency. Additional and targeted treatment is required to treat LGS with MRC I deficiency.
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Affiliation(s)
| | - Young-Mock Lee
- Department of Pediatrics, Gangnam Severance Hospital, Yonsei University College of Medicine, Seoul, Republic of Korea
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Yoo JY. BIRDs (Brief Potentially Ictal Rhythmic Discharges) watching during EEG monitoring. Front Neurol 2022; 13:966480. [PMID: 36081872 PMCID: PMC9445572 DOI: 10.3389/fneur.2022.966480] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/11/2022] [Accepted: 07/29/2022] [Indexed: 11/13/2022] Open
Abstract
Brief Potentially Ictal Rhythmic Discharges (BIRDs), initially described in neonates, have been shown to correlate with increased risk of seizures in both critically ill and non-critically ill adults. In critically ill patients, BIRDs are associated with acute brain injury and worse functional outcomes. In non-critically ill adults, BIRDs are seen in patients with epilepsy with a greater likelihood of having drug resistance. The location of BIRDs seems to better predict the seizure onset zone compared to other interictal epileptiform discharges. The definition of BIRDs includes Paroxysmal Fast Activity (PFA), and they have similar clinical significance regardless of the exact cut-off frequencies. Their potential as a biomarker for seizure activity and seizure onset zone has been suggested. In patients with status epilepticus, BIRDs also resolve or decrease when seizures resolve. Thus, if BIRDs are observed on scalp EEG, more extended EEG monitoring is recommended to estimate their seizure burden and to guide treatment. With the recent addition of BIRDs in the critical care EEG terminology, with future investigations, we may soon be able to reach a consensus about the definition of electrographic seizures and better understand their neurophysiology and clinical significance.
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Aledo-Serrano Á, Gómez-Iglesias P, Toledano R, Garcia-Peñas JJ, Garcia-Morales I, Anciones C, Soto-Insuga V, Benke TA, Del Pino I, Gil-Nagel A. Sodium channel blockers for the treatment of epilepsy in CDKL5 deficiency disorder: Findings from a multicenter cohort. Epilepsy Behav 2021; 118:107946. [PMID: 33848848 DOI: 10.1016/j.yebeh.2021.107946] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/13/2021] [Revised: 03/21/2021] [Accepted: 03/21/2021] [Indexed: 12/15/2022]
Abstract
OBJECTIVE This study was aimed to analyze the effectiveness of sodium channel blockers (SCBs) in CDKL5 deficiency disorder (CDD)-related epilepsy. METHODS A retrospective, observational study was performed, including patients with CDD diagnosis evaluated between 2016 and 2019 at three tertiary Epilepsy Centers. Demographic, electroclinical and genetic features, as well as ASM treatments and their outcomes were analyzed, with special focus on SCBs. RESULTS Twenty-one patients evaluated at three tertiary Epilepsy Centers were included, of which 19 presented with epilepsy (90.5%); all had pathogenic mutations of CDKL5. Six patients (31.6%) were classified as SCB responders (more than 50% reduction), four being currently seizure free (mean seizure-free period of 8 years). Most frequent SCB drugs were oxcarbazepine (OXC), carbamazepine (CBZ), and lacosamide (LCM). None of them presented relevant adverse events. In contrast, three patients showed seizure aggravation in the non-responder group. When comparing both groups, responders had statistically significant younger age at SCB treatment and epilepsy onset, higher proportion of focal epileptiform activity and less frequent history of West syndrome. CONCLUSIONS The results of this study indicate that treatment with SCBs might be effective and safe in a subset of patients with CDD-related epilepsy.
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Affiliation(s)
- Ángel Aledo-Serrano
- Epilepsy Program. Neurology Department, Ruber Internacional Hospital, Madrid, Spain; Epilepsy Unit. Neuroscience Department, Corachan Clinic, Barcelona, Spain.
| | | | - Rafael Toledano
- Epilepsy Program. Neurology Department, Ruber Internacional Hospital, Madrid, Spain; Epilepsy Unit, Neurology Department, Ramon y Cajal University Hospital, Madrid, Spain
| | - Juan Jose Garcia-Peñas
- Department of Pediatric Neurology, Niño Jesus University Children's Hospital, Madrid, Spain
| | - Irene Garcia-Morales
- Epilepsy Program. Neurology Department, Ruber Internacional Hospital, Madrid, Spain; Epilepsy Unit. Neurology Department, Clínico San Carlos University Hospital, Madrid, Spain
| | - Carla Anciones
- Epilepsy Program. Neurology Department, Ruber Internacional Hospital, Madrid, Spain
| | - Victor Soto-Insuga
- Department of Pediatric Neurology, Niño Jesus University Children's Hospital, Madrid, Spain
| | - Timothy A Benke
- Departments of Pediatrics, Neurology, and Pharmacology, University of Colorado School of Medicine and Children's Hospital Colorado, Aurora, CO, United States
| | - Isabel Del Pino
- Principe Felipe Research Center (Centro de Investigación Principe Felipe, CIPF), Valencia, Spain
| | - Antonio Gil-Nagel
- Epilepsy Program. Neurology Department, Ruber Internacional Hospital, Madrid, Spain
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Yoo JY, Jetté N, Kwon CS, Young J, Marcuse LV, Fields MC, Gaspard N, Hirsch LJ. Brief potentially ictal rhythmic discharges and paroxysmal fast activity as scalp electroencephalographic biomarkers of seizure activity and seizure onset zone. Epilepsia 2021; 62:742-751. [PMID: 33576500 DOI: 10.1111/epi.16822] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/03/2020] [Revised: 01/04/2021] [Accepted: 01/04/2021] [Indexed: 11/26/2022]
Abstract
OBJECTIVE The electroencephalographic (EEG) terms "brief potentially ictal rhythmic discharges" (BIRDs) and "paroxysmal fast activity" (PFA) are considered distinct entities; however, their definitions overlap, and they may have similar clinical significance. We investigated their clinical significance and their association with seizures and the seizure onset zone (SOZ). METHODS We retrospectively identified an adult cohort (July 2015 to March 2018) whose long-term (>12 h) EEGs in any setting reported BIRDs (>4 Hz, lasting .5-10 s) and/or PFA. Different frequency cutoffs for PFA (>13 Hz or ≥8 Hz) were tested to compare their clinical significance. Patient demographics, clinical history, and EEG features were recorded. RESULTS We identified 94 patients with BIRDs/PFA out of 3520 patients (3%); 36 were critically ill (12 with epilepsy), and 58 were noncritically ill (all with epilepsy). The frequency of BIRDs/PFA was largely dependent on EEG background: it tended to be slower (theta) in the absence of a posterior dominant rhythm or in the presence of continuous focal slowing in the same region (p = .01). Sixty-two of 94 patients (66%; 32/36 [89%] critically ill, 30/58 [52%] noncritically ill) had electrographic seizures during the recording. The scalp EEG SOZ colocalized with BIRDs/PFA in all cases. BIRDs with faster frequency (also qualifying as PFA by definition) had similar seizure risk to that of slower BIRDs (62%-71%), regardless of frequency cutoff used to define PFA. In addition, 30 of 30 (100%) patients with evolving BIRDs/PFA (which lasted a median of 6 s, range = 2-9.5 s) had electrographic seizures (>10 s), compared to 32 of 64 (50%) with nonevolving BIRDs (median = 1 s, range = .5-3.5 s; p < .01). SIGNIFICANCE A high proportion of patients with BIRDs/PFA had seizures on EEG, regardless of their frequency (i.e., whether they also qualified as PFA), and their location colocalized with scalp SOZ in all cases. BIRDs appear to be a scalp EEG biomarker of uncontrolled seizure activity and a reliable localizing sign of the SOZ.
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Affiliation(s)
- Ji Yeoun Yoo
- Department of Neurology, Icahn School of Medicine at Mount Sinai, New York, New York, USA
| | - Nathalie Jetté
- Department of Neurology, Icahn School of Medicine at Mount Sinai, New York, New York, USA
| | - Churl-Su Kwon
- Department of Neurology, Icahn School of Medicine at Mount Sinai, New York, New York, USA
| | - James Young
- Department of Neurology, Icahn School of Medicine at Mount Sinai, New York, New York, USA
| | - Lara V Marcuse
- Department of Neurology, Icahn School of Medicine at Mount Sinai, New York, New York, USA
| | - Madeline C Fields
- Department of Neurology, Icahn School of Medicine at Mount Sinai, New York, New York, USA
| | - Nicolas Gaspard
- Department of Neurology, Yale University, New Haven, Connecticut, USA.,Department of Neurology, Free University of Brussels-Erasmus Hospital, Brussels, Belgium
| | - Lawrence J Hirsch
- Department of Neurology, Yale University, New Haven, Connecticut, USA
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Kang BS, Woo YS, Lee J, Yi YY, Koo BS, Kang JW. Treatment Outcomes of Vagus Nerve Stimulation in Lennox-Gastaut Syndrome. ANNALS OF CHILD NEUROLOGY 2019. [DOI: 10.26815/acn.2019.00108] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022] Open
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Verrotti A, Striano P, Iapadre G, Zagaroli L, Bonanni P, Coppola G, Elia M, Mecarelli O, Franzoni E, Liso PD, Vigevano F, Curatolo P. The pharmacological management of Lennox-Gastaut syndrome and critical literature review. Seizure 2018; 63:17-25. [DOI: 10.1016/j.seizure.2018.10.016] [Citation(s) in RCA: 38] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/30/2018] [Revised: 10/11/2018] [Accepted: 10/25/2018] [Indexed: 12/29/2022] Open
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