1
|
Yindeedej V, Uda T, Nishijima S, Inoue T, Kuki I, Fukuoka M, Nukui M, Okazaki S, Kunihiro N, Umaba R, Goto T. Changes in interhemispheric coherence after total corpus callosotomy: a scalp EEG study in children with non-lesional generalized epilepsy. Childs Nerv Syst 2024:10.1007/s00381-024-06435-3. [PMID: 38687362 DOI: 10.1007/s00381-024-06435-3] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/03/2024] [Accepted: 04/27/2024] [Indexed: 05/02/2024]
Abstract
PURPOSE Coherence analysis in electroencephalography (EEG) allows measurement of the degree of consistency of amplitude between pairs of electrodes. Theoretically, disconnective epilepsy surgery should decrease coherence between corresponding areas. The study aimed to evaluate postoperative changes in interhemispheric coherence values after corpus callosotomy (CC). METHODS Non-lesional, drug-resistant, generalized epilepsy patients who underwent total CC were retrospectively collected. To evaluate coherence, we divided the scalp interictal EEG into "baseline" and "discharge" states after excluding periods with artifacts. Interhemispheric coherence values were obtained between eight pairs of symmetrically opposite scalp electrodes in six different frequency bands. We analyzed both pre- and postoperative EEG sessions and calculated the percentage of difference (POD) in coherence values. RESULTS We collected 13 patients and analyzed 2496 interhemispheric coherence values. Preoperative coherence values differed significantly between baseline and discharge states (p = 0.0003), but postoperative values did not (p = 0.11). For baseline state, coherence values were decreased after CC and median POD was - 22.3% (p < 0.0001). Delta frequency showed the most decreased POD (-44.3%, p = 0.0009). Median POD was lowest in the Fp1-Fp2 pair of electrodes. For discharge state, coherence values were decreased after CC and median POD was - 24.7% (p < 0.0001). Delta frequency again showed the most decreased POD (-55.9%, p = 0.0016). Median POD was lowest in the F7-F8 pair. CONCLUSION After total CC, interhemispheric coherence decreased significantly in both baseline and discharge states. The most decreased frequency band was the delta band, which may be used as a representative frequency band in future studies.
Collapse
Affiliation(s)
- Vich Yindeedej
- Department of Neurosurgery, Osaka Metropolitan University, Graduate School of Medicine, Osaka, Japan
- Department of Pediatric Neurosurgery, Osaka City General Hospital, Osaka, Japan
- Division of Neurosurgery, Department of Surgery, Thammasat University Hospital, Faculty of Medicine, Thammasat University, Pathumthani, Thailand
| | - Takehiro Uda
- Department of Neurosurgery, Osaka Metropolitan University, Graduate School of Medicine, Osaka, Japan.
- Department of Pediatric Neurosurgery, Osaka City General Hospital, Osaka, Japan.
| | - Shugo Nishijima
- Department of Neurosurgery, Osaka Metropolitan University, Graduate School of Medicine, Osaka, Japan
| | - Takeshi Inoue
- Department of Pediatric Neurology, Osaka City General Hospital, Osaka, Japan
| | - Ichiro Kuki
- Department of Pediatric Neurology, Osaka City General Hospital, Osaka, Japan
| | - Masataka Fukuoka
- Department of Pediatric Neurology, Osaka City General Hospital, Osaka, Japan
| | - Megumi Nukui
- Department of Pediatric Neurology, Osaka City General Hospital, Osaka, Japan
| | - Shin Okazaki
- Department of Pediatric Neurology, Osaka City General Hospital, Osaka, Japan
| | - Noritsugu Kunihiro
- Department of Pediatric Neurosurgery, Osaka City General Hospital, Osaka, Japan
| | - Ryoko Umaba
- Department of Pediatric Neurosurgery, Osaka City General Hospital, Osaka, Japan
| | - Takeo Goto
- Department of Neurosurgery, Osaka Metropolitan University, Graduate School of Medicine, Osaka, Japan
| |
Collapse
|
2
|
Fukuoka M, Kuki I, Hattori Y, Tsuji H, Horino A, Nukui M, Inoue T, Okazaki S, Kunihiro N, Uda T. Total callosotomy ameliorates epileptic activity and improves cognitive function in a patient with Miller-Dieker syndrome. Epilepsy Behav Rep 2024; 26:100670. [PMID: 38725538 PMCID: PMC11079450 DOI: 10.1016/j.ebr.2024.100670] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/09/2024] [Revised: 04/24/2024] [Accepted: 04/24/2024] [Indexed: 05/12/2024] Open
Abstract
Miller-Dieker syndrome (MDS) is characterized by facial abnormalities and lissencephaly and is caused by a microdeletion in the region containing the LIS1 gene at chromosome 17p13.3. We report a case in which postnatal neuroimaging revealed severe lissencephaly. A 9-month-old boy presented with infantile spasms syndrome. Because of the refractory course of seizures and continued poor vitality, total corpus callosotomy was performed at 28 months of age. Intraoperative electroencephalogram (EEG) showed that the bilateral synchronous epileptiform discharges disappeared immediately after the disconnection. Postoperatively, the epileptic spasms (ES) in clusters disappeared, and single ES followed by focal seizures became the main symptom. The patient smiled more and became more responsive to stimuli. Postoperative scalp interictal EEG showed desynchronized multifocal spike and wave discharges with a marked decrease in the bilateral synchronous spike and wave discharges. Our findings suggest that the corpus callosum is involved in the mechanism ES in clusters in MDS-associated lissencephaly, and total callosotomy could be a therapeutic option.
Collapse
Affiliation(s)
- Masataka Fukuoka
- Department of Pediatric Neurology, Osaka City General Hospital, Osaka, Japan
| | - Ichiro Kuki
- Department of Pediatric Neurology, Osaka City General Hospital, Osaka, Japan
| | - Yuka Hattori
- Department of Pediatric Neurology, Osaka City General Hospital, Osaka, Japan
| | - Hitomi Tsuji
- Department of Pediatric Neurology, Osaka City General Hospital, Osaka, Japan
| | - Asako Horino
- Department of Pediatric Neurology, Osaka City General Hospital, Osaka, Japan
| | - Megumi Nukui
- Department of Pediatric Neurology, Osaka City General Hospital, Osaka, Japan
| | - Takeshi Inoue
- Department of Pediatric Neurology, Osaka City General Hospital, Osaka, Japan
| | - Shin Okazaki
- Department of Pediatric Neurology, Osaka City General Hospital, Osaka, Japan
| | - Noritsugu Kunihiro
- Department of Pediatric Neurosurgery, Osaka City General Hospital, Osaka, Japan
| | - Takehiro Uda
- Department of Pediatric Neurosurgery, Osaka City General Hospital, Osaka, Japan
- Department of Neurosurgery, Osaka Metropolitan University Graduate School of Medicine, Japan
| |
Collapse
|
3
|
Chourasia N, Stone SSD, Tsuboyama M, Madsen JR, Ryan M, Zhang B, Libenson MH, Bolton J, Harini C. Influence of extent and age at corpus callosotomy on seizure outcomes. A single center experience. Epilepsia Open 2023; 8:1596-1601. [PMID: 37602493 PMCID: PMC10690660 DOI: 10.1002/epi4.12819] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/31/2023] [Accepted: 08/16/2023] [Indexed: 08/22/2023] Open
Abstract
Corpus callosotomy (CC) is a palliative treatment for drop seizures in patients with drug-resistant nonlocalizable epilepsy. We compared drop seizure outcomes between patients undergoing anterior CC versus complete CC and examined factors impacting outcomes for drop seizures including age at CC and duration of epilepsy. A retrospective review of patients who underwent CC between 2003 and 2022 with a minimum of 6 months postsurgical follow-up was included. Outcome measure for drop seizures included seizure reduction ≥50% from baseline as well as elimination of drop seizures. Thirty-eight patients were included. Overall, ≥50% reduction in drop seizures occurred in nearly 70% (23 out of 33) patients with complete elimination in 58% (19 out of 33). Compared with anterior CC (n = 13), patients undergoing complete CC (n = 25) had increased likelihood of ≥50% reduction (p = 0.006) or elimination (p = 0.024) of drop seizures. Regression analysis showed that complete CC was the primary predictor for improved drop seizure outcomes (elimination, p = 0.014 or ≥50% reduction, p = 0.006), while age at CC and duration of epilepsy did not impact the outcomes. Compared to anterior CC, complete CC was significantly more likely to lead to improvement/freedom from drop seizures. Age at CC or duration of epilepsy did not influence drop seizure outcomes.
Collapse
Affiliation(s)
- Nitish Chourasia
- Division of Epilepsy and Clinical Neurophysiology, Department of NeurologyBoston Children's HospitalMassachusettsBostonUSA
- Present address:
Le Bonheur Neuroscience Institute, Le Bonheur Children's HospitalTennesseeMemphisUSA
| | - Scellig S. D. Stone
- Division of Epilepsy and Clinical Neurophysiology, Department of NeurologyBoston Children's HospitalMassachusettsBostonUSA
| | - Melissa Tsuboyama
- Division of Epilepsy and Clinical Neurophysiology, Department of NeurologyBoston Children's HospitalMassachusettsBostonUSA
| | - Joseph R. Madsen
- Division of Epilepsy and Clinical Neurophysiology, Department of NeurologyBoston Children's HospitalMassachusettsBostonUSA
| | - Morgan Ryan
- Department of NeurologyBoston Children’s HospitalBostonMassachusettsUSA
- Biostatistics and Research Design CenterInstitutional Centers for Clinical and Translational Research, Boston Children’s HospitalBostonMassachusettsUSA
| | - Bo Zhang
- Department of NeurologyBoston Children’s HospitalBostonMassachusettsUSA
- Biostatistics and Research Design CenterInstitutional Centers for Clinical and Translational Research, Boston Children’s HospitalBostonMassachusettsUSA
| | - Mark H. Libenson
- Division of Epilepsy and Clinical Neurophysiology, Department of NeurologyBoston Children's HospitalMassachusettsBostonUSA
| | - Jeffrey Bolton
- Division of Epilepsy and Clinical Neurophysiology, Department of NeurologyBoston Children's HospitalMassachusettsBostonUSA
| | - Chellamani Harini
- Division of Epilepsy and Clinical Neurophysiology, Department of NeurologyBoston Children's HospitalMassachusettsBostonUSA
| |
Collapse
|
4
|
Inoue T, Kuki I, Uda T, Kunihiro N, Umaba R, Koh S, Nukui M, Okazaki S, Otsubo H. Comparing late-onset epileptic spasm outcomes after corpus callosotomy and subsequent disconnection surgery between post-encephalitis/encephalopathy and non-encephalitis/encephalopathy. Epilepsia Open 2023; 8:346-359. [PMID: 36692212 PMCID: PMC10235586 DOI: 10.1002/epi4.12698] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/20/2022] [Accepted: 01/20/2023] [Indexed: 01/25/2023] Open
Abstract
OBJECTIVE We aimed to analyze the efficiency of corpus callosotomy (CC) and subsequent disconnection surgeries in patients with late-onset epileptic spasms (LOES) by comparing post-encephalitis/encephalopathy (PE) and non-encephalitis/encephalopathy (NE). We hypothesized these surgeries can control potential focal onset epileptic spasms (ES) in the NE group but not in the PE group. METHODS We retrospectively included 23 patients (12 with PE and 11 with NE) who initially underwent CC and subsequent disconnection surgeries (five NE). We compared the clinical courses, seizure types, MRI, video-EEG, epilepsy surgery, and seizure outcomes between the two groups. RESULTS The median age of LOES onset in the PE group was 2.8 (range 1.0-10.1 years) and 2.9 years (range 1.1-12.6) in the NE group. Bilateral MRI abnormalities were observed in both groups (PE, n = 12; NE, n = 3; P < 0.05). The PE group presented ES alone (n = 2), ES + focal seizures (FS) (n = 3), ES + generalized seizures (GS) (n = 3), and ES + FS + GS (n = 4) in addition to stimulus-induced startle seizures (SS) (n = 8) (mean 3.1 seizure types/patient). The NE group presented ES alone (n = 1), ES + FS (n = 2), and ES + FS + GS (n = 8) (mean 2.7 seizure types/patient). In the PE group, CC stopped ES (n = 1) and SS (n = 1) and achieved <50% SS (n = 3). In the NE group, CC achieved immediate ES-free status (n = 2) and < 50% ES (n = 1), and additional disconnection surgeries subsided all seizure types (n = 3) based on lateralized interictal/ictal EEG findings. LOES was significantly remitted by surgery in the NE group (6/11 [55%]) compared with the PE group (1/12 [8%]) (P < 0.05). SIGNIFICANCE LOES is a drug-resistant, focal/generalized/unknown onset ES. Lateralization of ES in NE could be achieved after CC and eliminated by further disconnection surgeries because of potential focal onset ES. LOES in PE had little benefit from CC for generalized onset ES. However, CC might reduce SS in patients in the PE group with multiple seizure types.
Collapse
Affiliation(s)
- Takeshi Inoue
- Department of Pediatric NeurologyOsaka City General HospitalOsakaJapan
| | - Ichiro Kuki
- Department of Pediatric NeurologyOsaka City General HospitalOsakaJapan
| | - Takehiro Uda
- Department of Pediatric NeurosurgeryOsaka City General HospitalOsakaJapan
- Department of NeurosurgeryOsaka Metropolitan University Graduate School of MedicineOsakaJapan
| | - Noritsugu Kunihiro
- Department of Pediatric NeurosurgeryOsaka City General HospitalOsakaJapan
| | - Ryoko Umaba
- Department of Pediatric NeurosurgeryOsaka City General HospitalOsakaJapan
| | - Saya Koh
- Department of NeurosurgeryOsaka Metropolitan University Graduate School of MedicineOsakaJapan
| | - Megumi Nukui
- Department of Pediatric NeurologyOsaka City General HospitalOsakaJapan
- Department of Pediatric LogopedicsOsaka City General HospitalOsakaJapan
| | - Shin Okazaki
- Department of Pediatric NeurologyOsaka City General HospitalOsakaJapan
- Department of Pediatric LogopedicsOsaka City General HospitalOsakaJapan
| | - Hiroshi Otsubo
- Division of NeurologyThe Hospital for Sick ChildrenTorontoOntarioCanada
| |
Collapse
|
5
|
Wu X, Ou S, Zhang H, Zhen Y, Huang Y, Wei P, Shan Y. Long-term follow-up seizure outcomes after corpus callosotomy: A systematic review with meta-analysis. Brain Behav 2023; 13:e2964. [PMID: 36929636 PMCID: PMC10097058 DOI: 10.1002/brb3.2964] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/12/2022] [Revised: 02/21/2023] [Accepted: 02/24/2023] [Indexed: 03/18/2023] Open
Abstract
BACKGROUND Corpus callosotomy (CC) is appropriate for patients with seizures of a bilateral or diffuse origin, or those with seizures of a unilateral origin with rapid spread to the contralateral cerebral hemisphere. The efficiency of CC in patients with drug-resistant epilepsy is a long-term concern because most articles reporting the surgical results of CC arise from small case series, and the durations of follow-up vary. METHODS PubMed, Embase, Cochrane Library, and Web of Science were searched to identify papers published before November 8, 2021. The systematic review was completed following PRISMA guidelines. Outcomes were analyzed by meta-analysis of the proportions. RESULTS A total of 1644 patients with drug-resistant epilepsy (49 retrospective or prospective case series studies) underwent CC, and the follow-up time of all patients was at least 1 year. The rate of complete seizure freedom (SF) was 12.38% (95% confidence interval [CI], 8.17%-17.21%). Meanwhile, the rate of complete SF from drop attacks was 61.86% (95% CI, 51.87%-71.41%). The rates of complete SF after total corpus callosotomy (TCC) and anterior corpus callosotomy (ACC) were 11.41% (95% CI, 5.33%-18.91%) and 6.75% (95% CI, 2.76%-11.85%), respectively. Additionally, the rate of complete SF from drop attacks after TCC was significantly higher than that after ACC (71.52%, 95% CI, 54.22%-86.35% vs. 57.11%, 95% CI, 42.17%-71.49%). The quality of evidence for the three outcomes by GRADE assessment was low to moderate. CONCLUSION There was no significant difference in the rate of complete SF between TCC and ACC. TCC had a significantly higher rate of complete SF from drop attacks than did ACC. Furthermore, CC for the treatment of drug-resistant epilepsy remains an important problem for further investigation because there are no universally accepted standardized guidelines for the extent of CC and its benefit to patients. In future research, we will focus on this issue.
Collapse
Affiliation(s)
- Xiaolong Wu
- Department of Neurosurgery, XuanWu Hospital, Capital Medical University, Beijing, China.,International Neuroscience Institute (China-INI), Beijing, China.,Clinical Research Center for Epilepsy, Capital Medical University, Beijing, China
| | - Siqi Ou
- Department of Neurosurgery, XuanWu Hospital, Capital Medical University, Beijing, China.,International Neuroscience Institute (China-INI), Beijing, China.,Clinical Research Center for Epilepsy, Capital Medical University, Beijing, China
| | - Huaqiang Zhang
- Department of Neurosurgery, XuanWu Hospital, Capital Medical University, Beijing, China.,International Neuroscience Institute (China-INI), Beijing, China.,Clinical Research Center for Epilepsy, Capital Medical University, Beijing, China
| | - Yuhang Zhen
- Department of Neurosurgery, XuanWu Hospital, Capital Medical University, Beijing, China.,International Neuroscience Institute (China-INI), Beijing, China.,Clinical Research Center for Epilepsy, Capital Medical University, Beijing, China
| | - Yinchun Huang
- Department of Neurosurgery, XuanWu Hospital, Capital Medical University, Beijing, China.,International Neuroscience Institute (China-INI), Beijing, China.,Clinical Research Center for Epilepsy, Capital Medical University, Beijing, China
| | - Penghu Wei
- Department of Neurosurgery, XuanWu Hospital, Capital Medical University, Beijing, China.,International Neuroscience Institute (China-INI), Beijing, China.,Clinical Research Center for Epilepsy, Capital Medical University, Beijing, China
| | - Yongzhi Shan
- Department of Neurosurgery, XuanWu Hospital, Capital Medical University, Beijing, China.,International Neuroscience Institute (China-INI), Beijing, China.,Clinical Research Center for Epilepsy, Capital Medical University, Beijing, China
| |
Collapse
|
6
|
Liu C, Hu Y, Zhou J, Guan Y, Wang M, Qi X, Wang X, Zhang H, Adilijiang A, Li T, Luan G. Retrospective Clinical Analysis of Epilepsy Treatment for Children with Drug-Resistant Epilepsy (A Single-Center Experience). Brain Sci 2022; 13:brainsci13010014. [PMID: 36671996 PMCID: PMC9856722 DOI: 10.3390/brainsci13010014] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/06/2022] [Revised: 12/17/2022] [Accepted: 12/18/2022] [Indexed: 12/24/2022] Open
Abstract
Objectives: This retrospective cohort study investigated the clinical characteristics and seizure outcomes of patients aged 1−14 years with drug-resistant epilepsy (DRE) who were treated by different typologies of therapy. Methods: Four hundred and eighteen children with DRE were recruited from Sanbo Brain Hospital of Capital Medical University from April 2008 to February 2015. The patients were divided into three groups: medication (n = 134, 32.06%), resection surgery (n = 185, 44.26%), and palliative surgery (n = 99, 23.68%) groups. Demographic characteristics were attained from medical records. All patients were followed up for at least 5 years, with seizure outcomes classified according to International League Against Epilepsy criteria. The psychological outcome was evaluated with the development quotient and Wechsler Intelligence Quotient Scale for children (Chinese version). Results: The most frequent seizure type was generalized tonic seizure in 53.83% of patients. Age at seizure onset in 54.55% of patients was <3 years. The most frequent etiologies were focal cortical dysplasia (FCD). West syndrome was the most common epilepsy syndrome. Favorable seizure outcomes at the 5-year follow-up in the medication, resection surgery, and palliative surgery groups were 5.22%, 77.30%, and 14.14%, respectively. The patients showed varying degrees of improvement in terms of developmental and intellectual outcomes post-treatment. Conclusions: Pediatric patients with DRE were characterized by frequent seizures, a variety of seizure types, and complex etiology. Recurrent seizures severely affected the cognitive function and development of children. Early surgical intervention would be beneficial for seizure control and prevention of mental retardation. Palliative surgery was also a reasonable option for patients who were not suitable candidates for resection surgery.
Collapse
Affiliation(s)
- Changqing Liu
- Department of Neurosurgery, Sanbo Brain Hospital, Capital Medical University, Beijing 100093, China
- Beijing Key Laboratory of Epilepsy, Sanbo Brain Hospital, Capital Medical University, Beijing 100093, China
- Center of Epilepsy, Beijing Institute of Brain Disorders, Capital Medical University, Beijing 100093, China
| | - Yue Hu
- Department of Neurosurgery, Sanbo Brain Hospital, Capital Medical University, Beijing 100093, China
- Department of Neurosurgery, Aviation General Hospital, China Medical University, Beijing 100012, China
| | - Jian Zhou
- Department of Neurosurgery, Sanbo Brain Hospital, Capital Medical University, Beijing 100093, China
- Beijing Key Laboratory of Epilepsy, Sanbo Brain Hospital, Capital Medical University, Beijing 100093, China
- Center of Epilepsy, Beijing Institute of Brain Disorders, Capital Medical University, Beijing 100093, China
| | - Yuguang Guan
- Department of Neurosurgery, Sanbo Brain Hospital, Capital Medical University, Beijing 100093, China
- Beijing Key Laboratory of Epilepsy, Sanbo Brain Hospital, Capital Medical University, Beijing 100093, China
- Center of Epilepsy, Beijing Institute of Brain Disorders, Capital Medical University, Beijing 100093, China
| | - Mengyang Wang
- Center of Epilepsy, Beijing Institute of Brain Disorders, Capital Medical University, Beijing 100093, China
- Department of Neurology, Sanbo Brain Hospital, Capital Medical University, Beijing 100093, China
| | - Xueling Qi
- Department of Pathology, Sanbo Brain Hospital, Capital Medical University, Beijing 100093, China
| | - Xiongfei Wang
- Department of Neurosurgery, Sanbo Brain Hospital, Capital Medical University, Beijing 100093, China
- Center of Epilepsy, Beijing Institute of Brain Disorders, Capital Medical University, Beijing 100093, China
| | - Huawei Zhang
- Department of Neurosurgery, Sanbo Brain Hospital, Capital Medical University, Beijing 100093, China
| | | | - Tiemin Li
- Department of Neurosurgery, Sanbo Brain Hospital, Capital Medical University, Beijing 100093, China
| | - Guoming Luan
- Department of Neurosurgery, Sanbo Brain Hospital, Capital Medical University, Beijing 100093, China
- Beijing Key Laboratory of Epilepsy, Sanbo Brain Hospital, Capital Medical University, Beijing 100093, China
- Center of Epilepsy, Beijing Institute of Brain Disorders, Capital Medical University, Beijing 100093, China
- Correspondence:
| |
Collapse
|
7
|
Fujimoto A, Okanishi T. Corpus Callosotomy: Editorial. Brain Sci 2022; 12:1006. [PMID: 36009068 PMCID: PMC9405958 DOI: 10.3390/brainsci12081006] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/21/2022] [Accepted: 07/28/2022] [Indexed: 11/16/2022] Open
|
8
|
Uchida D, Ono T, Honda R, Watanabe Y, Toda K, Baba S, Matsuo T, Baba H. Asymmetric epileptic spasms after corpus callosotomy in children with West syndrome may be a good indicator for unilateral epileptic focus and subsequent resective surgery. Epilepsia Open 2022; 7:474-487. [PMID: 35869791 PMCID: PMC9436295 DOI: 10.1002/epi4.12631] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/13/2022] [Accepted: 07/18/2022] [Indexed: 11/06/2022] Open
Affiliation(s)
- Daiki Uchida
- Department of Neurosurgery, National Hospital Organization Nagasaki Medical Center, Omura Nagasaki Japan
- Department of Neurosurgery Nagasaki University Graduate School of Biomedical Sciences Nagasaki Japan
| | - Tomonori Ono
- Department of Neurosurgery, National Hospital Organization Nagasaki Medical Center, Omura Nagasaki Japan
- Epilepsy Center, National Hospital Organization Nagasaki Medical Center, Omura Nagasaki Japan
| | - Ryoko Honda
- Epilepsy Center, National Hospital Organization Nagasaki Medical Center, Omura Nagasaki Japan
- Department of Pediatrics, National Hospital Organization Nagasaki Medical Center, Omura Nagasaki Japan
| | - Yoshiaki Watanabe
- Epilepsy Center, National Hospital Organization Nagasaki Medical Center, Omura Nagasaki Japan
- Department of Pediatrics, National Hospital Organization Nagasaki Medical Center, Omura Nagasaki Japan
| | - Keisuke Toda
- Department of Neurosurgery, National Hospital Organization Nagasaki‐Kawatana Medical Center, Kawatana Nagasaki Japan
| | - Shiro Baba
- Department of Neurosurgery Nagasaki University Graduate School of Biomedical Sciences Nagasaki Japan
| | - Takayuki Matsuo
- Department of Neurosurgery Nagasaki University Graduate School of Biomedical Sciences Nagasaki Japan
| | - Hiroshi Baba
- Epilepsy Center, Nishi‐Isahaya Hospital, Isahaya Nagasaki Japan
| |
Collapse
|
9
|
Ahrens SM, Ostendorf AP, Lado FA, Arnold ST, Bai S, Bensalem-Owen MK, Chapman KE, Clarke DF, Eisner M, Fountain NB, Gray JM, Gunduz MT, Hopp JL, Riker E, Schuele SU, Small B, Herman ST. Impact of the COVID-19 Pandemic on Epilepsy Center Practice in the United States. Neurology 2022; 98:e1893-e1901. [PMID: 35292559 PMCID: PMC9141627 DOI: 10.1212/wnl.0000000000200285] [Citation(s) in RCA: 12] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/10/2021] [Accepted: 02/09/2022] [Indexed: 11/17/2022] Open
Abstract
BACKGROUND AND OBJECTIVES Persons with epilepsy, especially those with drug resistant epilepsy (DRE), may benefit from inpatient services such as admission to the epilepsy monitoring unit (EMU) and epilepsy surgery. The COVID-19 pandemic caused reductions in these services within the US during 2020. This article highlights changes in resources, admissions, and procedures among epilepsy centers accredited by the National Association of Epilepsy Centers (NAEC). METHODS We compared data reported in 2019, prior to the COVID-19 pandemic, and 2020 from all 260 level 3 and level 4 NAEC accredited epilepsy centers. Data were described using frequency for categorical variables and median for continuous variables and were analyzed by center level, center population category, and geographical location. Qualitative responses from center directors to questions regarding the impact from COVID-19 were summarized utilizing thematic analysis. Responses from the NAEC center annual reports as well as a supplemental COVID-19 survey were included. RESULTS EMU admissions declined 23% (-21,515) in 2020, with largest median reductions in level 3 centers [-55 admissions (-44%)] and adult centers [-57 admissions (-39%)]. The drop in admissions was more substantial in the East North Central, East South Central, Mid Atlantic, and New England US Census divisions. Survey respondents attributed reduced admissions to re-assigning EMU beds, restrictions on elective admissions, reduced staffing, and patient reluctance for elective admission. Treatment surgeries declined by 371 cases (5.7%), with the largest reduction occurring in VNS implantations [-486 cases (-19%)] and temporal lobectomies [-227 cases (-16%)]. All other procedure volumes increased, including a 35% (54 cases) increase in corpus callosotomies. DISCUSSION In the US, access to care for persons with epilepsy declined during the COVID-19 pandemic in 2020. Adult patients, those relying on level 3 centers for care, and many persons in the eastern half of the US were most affected.
Collapse
Affiliation(s)
- Stephanie M Ahrens
- From the Department of Pediatrics (S.M.A., A.P.O., M.T.G.), Nationwide Children's Hospital and Ohio State University, Columbus; Department of Neurology (F.A.L.), Hofstra Northwell Comprehensive Epilepsy Center, Great Neck, NY; Department of Pediatrics (S.T.A.), Children's Medical Center, Dallas, TX; Pediatric Biostatistics Core (S.B.), Emory University School of Medicine, Atlanta, GA; Department of Neurology (M.K.B.O.), University of Kentucky, Lexington; Department of Child Health (K.E.C.), University of Arizona College of Medicine and Barrow Neurological Institute at Phoenix Children's Hospital; Division of Pediatric Neurology, Department of Neurology (D.F.C.), Dell Medical School, University of Texas at Austin; Biostatistics Resource at Nationwide Children's Hospital (M.E.), Columbus, OH; Department of Neurology (N.B.F.), Comprehensive Epilepsy Program, University of Virginia, Charlottesville; National Association of Epilepsy Centers (J.M.G., E.R., B.S.), Washington, DC; University of Maryland Medical Center (J.L.H.), Baltimore; Ken and Ruth Davee Department of Neurology (S.U.S.), Northwestern University Feinberg School of Medicine, Chicago, IL; and Department of Neurology (S.T.H.), Barrow Neurological Institute, Phoenix, AZ
| | - Adam P Ostendorf
- From the Department of Pediatrics (S.M.A., A.P.O., M.T.G.), Nationwide Children's Hospital and Ohio State University, Columbus; Department of Neurology (F.A.L.), Hofstra Northwell Comprehensive Epilepsy Center, Great Neck, NY; Department of Pediatrics (S.T.A.), Children's Medical Center, Dallas, TX; Pediatric Biostatistics Core (S.B.), Emory University School of Medicine, Atlanta, GA; Department of Neurology (M.K.B.O.), University of Kentucky, Lexington; Department of Child Health (K.E.C.), University of Arizona College of Medicine and Barrow Neurological Institute at Phoenix Children's Hospital; Division of Pediatric Neurology, Department of Neurology (D.F.C.), Dell Medical School, University of Texas at Austin; Biostatistics Resource at Nationwide Children's Hospital (M.E.), Columbus, OH; Department of Neurology (N.B.F.), Comprehensive Epilepsy Program, University of Virginia, Charlottesville; National Association of Epilepsy Centers (J.M.G., E.R., B.S.), Washington, DC; University of Maryland Medical Center (J.L.H.), Baltimore; Ken and Ruth Davee Department of Neurology (S.U.S.), Northwestern University Feinberg School of Medicine, Chicago, IL; and Department of Neurology (S.T.H.), Barrow Neurological Institute, Phoenix, AZ
| | - Fred Alexander Lado
- From the Department of Pediatrics (S.M.A., A.P.O., M.T.G.), Nationwide Children's Hospital and Ohio State University, Columbus; Department of Neurology (F.A.L.), Hofstra Northwell Comprehensive Epilepsy Center, Great Neck, NY; Department of Pediatrics (S.T.A.), Children's Medical Center, Dallas, TX; Pediatric Biostatistics Core (S.B.), Emory University School of Medicine, Atlanta, GA; Department of Neurology (M.K.B.O.), University of Kentucky, Lexington; Department of Child Health (K.E.C.), University of Arizona College of Medicine and Barrow Neurological Institute at Phoenix Children's Hospital; Division of Pediatric Neurology, Department of Neurology (D.F.C.), Dell Medical School, University of Texas at Austin; Biostatistics Resource at Nationwide Children's Hospital (M.E.), Columbus, OH; Department of Neurology (N.B.F.), Comprehensive Epilepsy Program, University of Virginia, Charlottesville; National Association of Epilepsy Centers (J.M.G., E.R., B.S.), Washington, DC; University of Maryland Medical Center (J.L.H.), Baltimore; Ken and Ruth Davee Department of Neurology (S.U.S.), Northwestern University Feinberg School of Medicine, Chicago, IL; and Department of Neurology (S.T.H.), Barrow Neurological Institute, Phoenix, AZ
| | - Susan T Arnold
- From the Department of Pediatrics (S.M.A., A.P.O., M.T.G.), Nationwide Children's Hospital and Ohio State University, Columbus; Department of Neurology (F.A.L.), Hofstra Northwell Comprehensive Epilepsy Center, Great Neck, NY; Department of Pediatrics (S.T.A.), Children's Medical Center, Dallas, TX; Pediatric Biostatistics Core (S.B.), Emory University School of Medicine, Atlanta, GA; Department of Neurology (M.K.B.O.), University of Kentucky, Lexington; Department of Child Health (K.E.C.), University of Arizona College of Medicine and Barrow Neurological Institute at Phoenix Children's Hospital; Division of Pediatric Neurology, Department of Neurology (D.F.C.), Dell Medical School, University of Texas at Austin; Biostatistics Resource at Nationwide Children's Hospital (M.E.), Columbus, OH; Department of Neurology (N.B.F.), Comprehensive Epilepsy Program, University of Virginia, Charlottesville; National Association of Epilepsy Centers (J.M.G., E.R., B.S.), Washington, DC; University of Maryland Medical Center (J.L.H.), Baltimore; Ken and Ruth Davee Department of Neurology (S.U.S.), Northwestern University Feinberg School of Medicine, Chicago, IL; and Department of Neurology (S.T.H.), Barrow Neurological Institute, Phoenix, AZ
| | - Shasha Bai
- From the Department of Pediatrics (S.M.A., A.P.O., M.T.G.), Nationwide Children's Hospital and Ohio State University, Columbus; Department of Neurology (F.A.L.), Hofstra Northwell Comprehensive Epilepsy Center, Great Neck, NY; Department of Pediatrics (S.T.A.), Children's Medical Center, Dallas, TX; Pediatric Biostatistics Core (S.B.), Emory University School of Medicine, Atlanta, GA; Department of Neurology (M.K.B.O.), University of Kentucky, Lexington; Department of Child Health (K.E.C.), University of Arizona College of Medicine and Barrow Neurological Institute at Phoenix Children's Hospital; Division of Pediatric Neurology, Department of Neurology (D.F.C.), Dell Medical School, University of Texas at Austin; Biostatistics Resource at Nationwide Children's Hospital (M.E.), Columbus, OH; Department of Neurology (N.B.F.), Comprehensive Epilepsy Program, University of Virginia, Charlottesville; National Association of Epilepsy Centers (J.M.G., E.R., B.S.), Washington, DC; University of Maryland Medical Center (J.L.H.), Baltimore; Ken and Ruth Davee Department of Neurology (S.U.S.), Northwestern University Feinberg School of Medicine, Chicago, IL; and Department of Neurology (S.T.H.), Barrow Neurological Institute, Phoenix, AZ
| | - Meriem K Bensalem-Owen
- From the Department of Pediatrics (S.M.A., A.P.O., M.T.G.), Nationwide Children's Hospital and Ohio State University, Columbus; Department of Neurology (F.A.L.), Hofstra Northwell Comprehensive Epilepsy Center, Great Neck, NY; Department of Pediatrics (S.T.A.), Children's Medical Center, Dallas, TX; Pediatric Biostatistics Core (S.B.), Emory University School of Medicine, Atlanta, GA; Department of Neurology (M.K.B.O.), University of Kentucky, Lexington; Department of Child Health (K.E.C.), University of Arizona College of Medicine and Barrow Neurological Institute at Phoenix Children's Hospital; Division of Pediatric Neurology, Department of Neurology (D.F.C.), Dell Medical School, University of Texas at Austin; Biostatistics Resource at Nationwide Children's Hospital (M.E.), Columbus, OH; Department of Neurology (N.B.F.), Comprehensive Epilepsy Program, University of Virginia, Charlottesville; National Association of Epilepsy Centers (J.M.G., E.R., B.S.), Washington, DC; University of Maryland Medical Center (J.L.H.), Baltimore; Ken and Ruth Davee Department of Neurology (S.U.S.), Northwestern University Feinberg School of Medicine, Chicago, IL; and Department of Neurology (S.T.H.), Barrow Neurological Institute, Phoenix, AZ
| | - Kevin E Chapman
- From the Department of Pediatrics (S.M.A., A.P.O., M.T.G.), Nationwide Children's Hospital and Ohio State University, Columbus; Department of Neurology (F.A.L.), Hofstra Northwell Comprehensive Epilepsy Center, Great Neck, NY; Department of Pediatrics (S.T.A.), Children's Medical Center, Dallas, TX; Pediatric Biostatistics Core (S.B.), Emory University School of Medicine, Atlanta, GA; Department of Neurology (M.K.B.O.), University of Kentucky, Lexington; Department of Child Health (K.E.C.), University of Arizona College of Medicine and Barrow Neurological Institute at Phoenix Children's Hospital; Division of Pediatric Neurology, Department of Neurology (D.F.C.), Dell Medical School, University of Texas at Austin; Biostatistics Resource at Nationwide Children's Hospital (M.E.), Columbus, OH; Department of Neurology (N.B.F.), Comprehensive Epilepsy Program, University of Virginia, Charlottesville; National Association of Epilepsy Centers (J.M.G., E.R., B.S.), Washington, DC; University of Maryland Medical Center (J.L.H.), Baltimore; Ken and Ruth Davee Department of Neurology (S.U.S.), Northwestern University Feinberg School of Medicine, Chicago, IL; and Department of Neurology (S.T.H.), Barrow Neurological Institute, Phoenix, AZ
| | - Dave F Clarke
- From the Department of Pediatrics (S.M.A., A.P.O., M.T.G.), Nationwide Children's Hospital and Ohio State University, Columbus; Department of Neurology (F.A.L.), Hofstra Northwell Comprehensive Epilepsy Center, Great Neck, NY; Department of Pediatrics (S.T.A.), Children's Medical Center, Dallas, TX; Pediatric Biostatistics Core (S.B.), Emory University School of Medicine, Atlanta, GA; Department of Neurology (M.K.B.O.), University of Kentucky, Lexington; Department of Child Health (K.E.C.), University of Arizona College of Medicine and Barrow Neurological Institute at Phoenix Children's Hospital; Division of Pediatric Neurology, Department of Neurology (D.F.C.), Dell Medical School, University of Texas at Austin; Biostatistics Resource at Nationwide Children's Hospital (M.E.), Columbus, OH; Department of Neurology (N.B.F.), Comprehensive Epilepsy Program, University of Virginia, Charlottesville; National Association of Epilepsy Centers (J.M.G., E.R., B.S.), Washington, DC; University of Maryland Medical Center (J.L.H.), Baltimore; Ken and Ruth Davee Department of Neurology (S.U.S.), Northwestern University Feinberg School of Medicine, Chicago, IL; and Department of Neurology (S.T.H.), Barrow Neurological Institute, Phoenix, AZ
| | - Mariah Eisner
- From the Department of Pediatrics (S.M.A., A.P.O., M.T.G.), Nationwide Children's Hospital and Ohio State University, Columbus; Department of Neurology (F.A.L.), Hofstra Northwell Comprehensive Epilepsy Center, Great Neck, NY; Department of Pediatrics (S.T.A.), Children's Medical Center, Dallas, TX; Pediatric Biostatistics Core (S.B.), Emory University School of Medicine, Atlanta, GA; Department of Neurology (M.K.B.O.), University of Kentucky, Lexington; Department of Child Health (K.E.C.), University of Arizona College of Medicine and Barrow Neurological Institute at Phoenix Children's Hospital; Division of Pediatric Neurology, Department of Neurology (D.F.C.), Dell Medical School, University of Texas at Austin; Biostatistics Resource at Nationwide Children's Hospital (M.E.), Columbus, OH; Department of Neurology (N.B.F.), Comprehensive Epilepsy Program, University of Virginia, Charlottesville; National Association of Epilepsy Centers (J.M.G., E.R., B.S.), Washington, DC; University of Maryland Medical Center (J.L.H.), Baltimore; Ken and Ruth Davee Department of Neurology (S.U.S.), Northwestern University Feinberg School of Medicine, Chicago, IL; and Department of Neurology (S.T.H.), Barrow Neurological Institute, Phoenix, AZ
| | - Nathan B Fountain
- From the Department of Pediatrics (S.M.A., A.P.O., M.T.G.), Nationwide Children's Hospital and Ohio State University, Columbus; Department of Neurology (F.A.L.), Hofstra Northwell Comprehensive Epilepsy Center, Great Neck, NY; Department of Pediatrics (S.T.A.), Children's Medical Center, Dallas, TX; Pediatric Biostatistics Core (S.B.), Emory University School of Medicine, Atlanta, GA; Department of Neurology (M.K.B.O.), University of Kentucky, Lexington; Department of Child Health (K.E.C.), University of Arizona College of Medicine and Barrow Neurological Institute at Phoenix Children's Hospital; Division of Pediatric Neurology, Department of Neurology (D.F.C.), Dell Medical School, University of Texas at Austin; Biostatistics Resource at Nationwide Children's Hospital (M.E.), Columbus, OH; Department of Neurology (N.B.F.), Comprehensive Epilepsy Program, University of Virginia, Charlottesville; National Association of Epilepsy Centers (J.M.G., E.R., B.S.), Washington, DC; University of Maryland Medical Center (J.L.H.), Baltimore; Ken and Ruth Davee Department of Neurology (S.U.S.), Northwestern University Feinberg School of Medicine, Chicago, IL; and Department of Neurology (S.T.H.), Barrow Neurological Institute, Phoenix, AZ
| | - Johanna M Gray
- From the Department of Pediatrics (S.M.A., A.P.O., M.T.G.), Nationwide Children's Hospital and Ohio State University, Columbus; Department of Neurology (F.A.L.), Hofstra Northwell Comprehensive Epilepsy Center, Great Neck, NY; Department of Pediatrics (S.T.A.), Children's Medical Center, Dallas, TX; Pediatric Biostatistics Core (S.B.), Emory University School of Medicine, Atlanta, GA; Department of Neurology (M.K.B.O.), University of Kentucky, Lexington; Department of Child Health (K.E.C.), University of Arizona College of Medicine and Barrow Neurological Institute at Phoenix Children's Hospital; Division of Pediatric Neurology, Department of Neurology (D.F.C.), Dell Medical School, University of Texas at Austin; Biostatistics Resource at Nationwide Children's Hospital (M.E.), Columbus, OH; Department of Neurology (N.B.F.), Comprehensive Epilepsy Program, University of Virginia, Charlottesville; National Association of Epilepsy Centers (J.M.G., E.R., B.S.), Washington, DC; University of Maryland Medical Center (J.L.H.), Baltimore; Ken and Ruth Davee Department of Neurology (S.U.S.), Northwestern University Feinberg School of Medicine, Chicago, IL; and Department of Neurology (S.T.H.), Barrow Neurological Institute, Phoenix, AZ
| | - Muhammed Talha Gunduz
- From the Department of Pediatrics (S.M.A., A.P.O., M.T.G.), Nationwide Children's Hospital and Ohio State University, Columbus; Department of Neurology (F.A.L.), Hofstra Northwell Comprehensive Epilepsy Center, Great Neck, NY; Department of Pediatrics (S.T.A.), Children's Medical Center, Dallas, TX; Pediatric Biostatistics Core (S.B.), Emory University School of Medicine, Atlanta, GA; Department of Neurology (M.K.B.O.), University of Kentucky, Lexington; Department of Child Health (K.E.C.), University of Arizona College of Medicine and Barrow Neurological Institute at Phoenix Children's Hospital; Division of Pediatric Neurology, Department of Neurology (D.F.C.), Dell Medical School, University of Texas at Austin; Biostatistics Resource at Nationwide Children's Hospital (M.E.), Columbus, OH; Department of Neurology (N.B.F.), Comprehensive Epilepsy Program, University of Virginia, Charlottesville; National Association of Epilepsy Centers (J.M.G., E.R., B.S.), Washington, DC; University of Maryland Medical Center (J.L.H.), Baltimore; Ken and Ruth Davee Department of Neurology (S.U.S.), Northwestern University Feinberg School of Medicine, Chicago, IL; and Department of Neurology (S.T.H.), Barrow Neurological Institute, Phoenix, AZ
| | - Jennifer L Hopp
- From the Department of Pediatrics (S.M.A., A.P.O., M.T.G.), Nationwide Children's Hospital and Ohio State University, Columbus; Department of Neurology (F.A.L.), Hofstra Northwell Comprehensive Epilepsy Center, Great Neck, NY; Department of Pediatrics (S.T.A.), Children's Medical Center, Dallas, TX; Pediatric Biostatistics Core (S.B.), Emory University School of Medicine, Atlanta, GA; Department of Neurology (M.K.B.O.), University of Kentucky, Lexington; Department of Child Health (K.E.C.), University of Arizona College of Medicine and Barrow Neurological Institute at Phoenix Children's Hospital; Division of Pediatric Neurology, Department of Neurology (D.F.C.), Dell Medical School, University of Texas at Austin; Biostatistics Resource at Nationwide Children's Hospital (M.E.), Columbus, OH; Department of Neurology (N.B.F.), Comprehensive Epilepsy Program, University of Virginia, Charlottesville; National Association of Epilepsy Centers (J.M.G., E.R., B.S.), Washington, DC; University of Maryland Medical Center (J.L.H.), Baltimore; Ken and Ruth Davee Department of Neurology (S.U.S.), Northwestern University Feinberg School of Medicine, Chicago, IL; and Department of Neurology (S.T.H.), Barrow Neurological Institute, Phoenix, AZ
| | - Ellen Riker
- From the Department of Pediatrics (S.M.A., A.P.O., M.T.G.), Nationwide Children's Hospital and Ohio State University, Columbus; Department of Neurology (F.A.L.), Hofstra Northwell Comprehensive Epilepsy Center, Great Neck, NY; Department of Pediatrics (S.T.A.), Children's Medical Center, Dallas, TX; Pediatric Biostatistics Core (S.B.), Emory University School of Medicine, Atlanta, GA; Department of Neurology (M.K.B.O.), University of Kentucky, Lexington; Department of Child Health (K.E.C.), University of Arizona College of Medicine and Barrow Neurological Institute at Phoenix Children's Hospital; Division of Pediatric Neurology, Department of Neurology (D.F.C.), Dell Medical School, University of Texas at Austin; Biostatistics Resource at Nationwide Children's Hospital (M.E.), Columbus, OH; Department of Neurology (N.B.F.), Comprehensive Epilepsy Program, University of Virginia, Charlottesville; National Association of Epilepsy Centers (J.M.G., E.R., B.S.), Washington, DC; University of Maryland Medical Center (J.L.H.), Baltimore; Ken and Ruth Davee Department of Neurology (S.U.S.), Northwestern University Feinberg School of Medicine, Chicago, IL; and Department of Neurology (S.T.H.), Barrow Neurological Institute, Phoenix, AZ
| | - Stephan U Schuele
- From the Department of Pediatrics (S.M.A., A.P.O., M.T.G.), Nationwide Children's Hospital and Ohio State University, Columbus; Department of Neurology (F.A.L.), Hofstra Northwell Comprehensive Epilepsy Center, Great Neck, NY; Department of Pediatrics (S.T.A.), Children's Medical Center, Dallas, TX; Pediatric Biostatistics Core (S.B.), Emory University School of Medicine, Atlanta, GA; Department of Neurology (M.K.B.O.), University of Kentucky, Lexington; Department of Child Health (K.E.C.), University of Arizona College of Medicine and Barrow Neurological Institute at Phoenix Children's Hospital; Division of Pediatric Neurology, Department of Neurology (D.F.C.), Dell Medical School, University of Texas at Austin; Biostatistics Resource at Nationwide Children's Hospital (M.E.), Columbus, OH; Department of Neurology (N.B.F.), Comprehensive Epilepsy Program, University of Virginia, Charlottesville; National Association of Epilepsy Centers (J.M.G., E.R., B.S.), Washington, DC; University of Maryland Medical Center (J.L.H.), Baltimore; Ken and Ruth Davee Department of Neurology (S.U.S.), Northwestern University Feinberg School of Medicine, Chicago, IL; and Department of Neurology (S.T.H.), Barrow Neurological Institute, Phoenix, AZ
| | - Barbara Small
- From the Department of Pediatrics (S.M.A., A.P.O., M.T.G.), Nationwide Children's Hospital and Ohio State University, Columbus; Department of Neurology (F.A.L.), Hofstra Northwell Comprehensive Epilepsy Center, Great Neck, NY; Department of Pediatrics (S.T.A.), Children's Medical Center, Dallas, TX; Pediatric Biostatistics Core (S.B.), Emory University School of Medicine, Atlanta, GA; Department of Neurology (M.K.B.O.), University of Kentucky, Lexington; Department of Child Health (K.E.C.), University of Arizona College of Medicine and Barrow Neurological Institute at Phoenix Children's Hospital; Division of Pediatric Neurology, Department of Neurology (D.F.C.), Dell Medical School, University of Texas at Austin; Biostatistics Resource at Nationwide Children's Hospital (M.E.), Columbus, OH; Department of Neurology (N.B.F.), Comprehensive Epilepsy Program, University of Virginia, Charlottesville; National Association of Epilepsy Centers (J.M.G., E.R., B.S.), Washington, DC; University of Maryland Medical Center (J.L.H.), Baltimore; Ken and Ruth Davee Department of Neurology (S.U.S.), Northwestern University Feinberg School of Medicine, Chicago, IL; and Department of Neurology (S.T.H.), Barrow Neurological Institute, Phoenix, AZ
| | - Susan T Herman
- From the Department of Pediatrics (S.M.A., A.P.O., M.T.G.), Nationwide Children's Hospital and Ohio State University, Columbus; Department of Neurology (F.A.L.), Hofstra Northwell Comprehensive Epilepsy Center, Great Neck, NY; Department of Pediatrics (S.T.A.), Children's Medical Center, Dallas, TX; Pediatric Biostatistics Core (S.B.), Emory University School of Medicine, Atlanta, GA; Department of Neurology (M.K.B.O.), University of Kentucky, Lexington; Department of Child Health (K.E.C.), University of Arizona College of Medicine and Barrow Neurological Institute at Phoenix Children's Hospital; Division of Pediatric Neurology, Department of Neurology (D.F.C.), Dell Medical School, University of Texas at Austin; Biostatistics Resource at Nationwide Children's Hospital (M.E.), Columbus, OH; Department of Neurology (N.B.F.), Comprehensive Epilepsy Program, University of Virginia, Charlottesville; National Association of Epilepsy Centers (J.M.G., E.R., B.S.), Washington, DC; University of Maryland Medical Center (J.L.H.), Baltimore; Ken and Ruth Davee Department of Neurology (S.U.S.), Northwestern University Feinberg School of Medicine, Chicago, IL; and Department of Neurology (S.T.H.), Barrow Neurological Institute, Phoenix, AZ
| |
Collapse
|
10
|
Koh S, Uda T, Kunihiro N, Kuki I, Inoue T, Kawashima T, Uda H, Umaba R, Nakajo K, Nakanishi Y, Sakuma S, Seto T, Okazaki S, Kawawaki H, Goto T. Disconnection surgery to cure or palliate medically intractable epileptic spasms: a retrospective study. J Neurosurg Pediatr 2022. [PMID: 37522649 DOI: 10.3171/2022.2.peds21522] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Abstract
OBJECTIVE
Surgery is a treatment option for medically intractable epileptic spasms (ESs). However, outcomes of ES after surgery are not well understood, especially when surgeries aimed at seizure palliation are included. The purpose of the present study was to 1) investigate the proportion of favorable postoperative ES outcomes, 2) explore the preoperative factors related to favorable postoperative ES outcomes, and 3) examine the timing of ES recurrence after disconnection surgeries, including both curative and palliative indications.
METHODS
This retrospective study included patients who underwent disconnection surgery for medically intractable ES at the authors’ institution between May 2015 and April 2021. Patients with suggested focal-onset ES based on preoperative evaluations initially underwent lobar disconnection. Patients with suggested generalized or unknown-onset ES underwent corpus callosotomy (CC). If evaluations after initial CC showed focalized or lateralized change, they were considered secondarily revealed focal-onset ES, and lobar disconnection was performed. ES outcomes were evaluated using the International League Against Epilepsy classification. ES outcomes were divided into classes 1–4 as favorable outcomes and classes 5 and 6 as unfavorable outcomes. The relationship between the favorable postoperative ES outcomes and the following preoperative factors was analyzed: sex, age at onset (< or > 1 year), duration between seizure onset and initial surgery (< or > 2 years), type of seizure at onset (ES or others), presence of other types of seizures, substrate, hypsarrhythmia, and MRI abnormalities. The period between the last surgery and ES recurrence was also analyzed.
RESULTS
A total of 41 patients were included, of whom 75.6% achieved favorable ES outcomes. A longer seizure duration between seizure onset and initial surgery, presence of hypsarrhythmia, and positive MRI findings led to poorer postoperative ES outcomes (p = 0.0028, p = 0.0041, and p = 0.0241, respectively). A total of 60.9% of patients had ES recurrence during the follow-up period, and their ES recurred within 13 months after the last surgery.
CONCLUSIONS
Disconnection surgery is an effective treatment option for medically intractable ES, even when the preoperative evaluation suggests a generalized or unknown onset.
Collapse
|
11
|
Ukishiro K, Osawa SI, Iwasaki M, Kakisaka Y, Jin K, Uematsu M, Yamamoto T, Tominaga T, Nakasato N. Age-Related Recovery of Daily Living Activity After 1-Stage Complete Corpus Callosotomy: A Retrospective Analysis of 41 Cases. Neurosurgery 2022; 90:547-551. [PMID: 35129138 DOI: 10.1227/neu.0000000000001871] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/11/2021] [Accepted: 11/07/2021] [Indexed: 11/19/2022] Open
Abstract
BACKGROUND Recovery time after corpus callosotomy (CC) is known to be longer in elderly than in younger patients. OBJECTIVE To evaluate the relationship between patient age and recovery time of activities of daily living (ADL) after 1-stage complete CC. METHODS This study included 41 patients (22 women; aged 13 months-34 years, median 7 years) who underwent 1-stage complete CC for medically intractable seizures with drop attacks, infantile spasms, and/or bilaterally synchronized electroencephalographic discharges between August 2009 and April 2019. The timing of restart of competence in 5 ADL categories and surgical outcomes were recorded. RESULTS Patients (1) restarted speech at 2.2 ± 1.3 (mean ± 2 standard deviations; range 1-5) days, (2) restarted replying with their own name on request at 5.5 ± 8.6 (2-33) days, (3) restarted oral intake at 1.6 ± 1.7 (1-11) days, (5) discontinued intravenous feeding at 6.0 ± 3.0 (2-16) days, and (5) restarted ambulation or wheelchair movement at 5.8 ± 3.4 (2-10) days. Younger patients showed significantly (P < .0223) earlier recovery of ambulation or wheelchair movement, but no age difference was found in the other 4 ADL categories. Overall seizure freedom was achieved in 5 patients, excellent (>80%) seizure reduction in 11, good (50%-80%) seizure reduction in 5, and poor (<50%) seizure reduction in 20. CONCLUSION Early ADL recovery after 1-stage complete CC is favorable in both young and adult patients. These findings, with good surgical outcomes, will encourage more positive consideration of 1-stage complete CC in both pediatric and adult patients.
Collapse
Affiliation(s)
- Kazushi Ukishiro
- Department of Epileptology, Tohoku University Graduate School of Medicine, Sendai, Japan.,Department of Neurosurgery, Yokohama City University Graduate School of Medicine, Yokohama, Japan
| | - Shin-Ichiro Osawa
- Department of Neurosurgery, Tohoku University Graduate School of Medicine, Sendai, Japan
| | - Masaki Iwasaki
- Department of Neurosurgery, National Center Hospital, National Center of Neurology and Psychiatry, Kodaira, Japan
| | - Yosuke Kakisaka
- Department of Epileptology, Tohoku University Graduate School of Medicine, Sendai, Japan
| | - Kazutaka Jin
- Department of Epileptology, Tohoku University Graduate School of Medicine, Sendai, Japan
| | - Mitsugu Uematsu
- Department of Pediatrics, Tohoku University Graduate School of Medicine, Sendai, Japan
| | - Tetsuya Yamamoto
- Department of Neurosurgery, Yokohama City University Graduate School of Medicine, Yokohama, Japan
| | - Teiji Tominaga
- Department of Neurosurgery, Tohoku University Graduate School of Medicine, Sendai, Japan
| | - Nobukazu Nakasato
- Department of Epileptology, Tohoku University Graduate School of Medicine, Sendai, Japan
| |
Collapse
|
12
|
Markosian C, Patel S, Kosach S, Goodman RR, Tomycz LD. Corpus Callosotomy in the Modern Era: Origins, Efficacy, Technical Variations, Complications, and Indications. World Neurosurg 2022:S1878-8750(22)00040-7. [PMID: 35033693 DOI: 10.1016/j.wneu.2022.01.037] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/03/2021] [Revised: 01/08/2022] [Accepted: 01/09/2022] [Indexed: 11/23/2022]
Abstract
Corpus callosotomy is among the oldest surgeries performed for drug-resistant epilepsy (DRE). First performed in 1940, various studies have since assessed its outcomes in various patient populations in addition to describing different extents of sectioning and emerging technologies (i.e. endoscopic, laser interstitial thermal therapy, and radiosurgery). In order to capture the current state and offer a reappraisal, we comprehensively review corpus callosotomy's origins, efficacy for various seizure types, technical variations, complications, and indications and compare the procedure to vagus nerve stimulation therapy which has similar indications. We consider corpus callosotomy to be a safe and efficacious procedure that should be considered by clinicians when appropriate. Furthermore, it can also play an important role in treating patients with DRE in low-to-middle-income countries where resources are limited.
Collapse
|
13
|
Ferrand-sorbets S, Fohlen M, Bourdillon P, Chipaux M, Bulteau C, Goetz L, Delalande O, Taussig D, Dorfmuller G. Complete callosotomy in children with drop attacks; A retrospective monocentric study of 50 patients. Seizure 2022. [DOI: 10.1016/j.seizure.2022.01.008] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/17/2021] [Revised: 01/10/2022] [Accepted: 01/12/2022] [Indexed: 11/19/2022] Open
|
14
|
Okanishi T, Fujimoto A. Corpus Callosotomy for Controlling Epileptic Spasms: A Proposal for Surgical Selection. Brain Sci 2021; 11:brainsci11121601. [PMID: 34942903 PMCID: PMC8699195 DOI: 10.3390/brainsci11121601] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/31/2021] [Revised: 11/30/2021] [Accepted: 11/30/2021] [Indexed: 11/25/2022] Open
Abstract
In 1940, van Wagenen and Herren first proposed the corpus callosotomy (CC) as a surgical procedure for epilepsy. CC has been mainly used to treat drop attacks, which are classified as generalized tonic or atonic seizures. Epileptic spasms (ESs) are a type of epileptic seizure characterized as brief muscle contractions with ictal polyphasic slow waves on an electroencephalogram and a main feature of West syndrome. Resection surgeries, including frontal/posterior disconnections and hemispherotomy, have been established for the treatment of medically intractable ES in patients with unilaterally localized epileptogenic regions. However, CC has also been adopted for ES treatment, with studies involving CC to treat ES having increased since 2010. In those studies, patients without lesions observed on magnetic resonance imaging or equally bilateral lesions predominated, in contrast to studies on resection surgeries. Here, we present a review of relevant literature concerning CC and relevant adaptations. We discuss history and adaptations of CC, and patient selection for epilepsy surgeries due to medically intractable ES, and compared resection surgeries with CC. We propose a surgical selection flow involving resection surgery or CC as first-line treatment for patients with ES who have been assessed as suitable candidates for surgery.
Collapse
Affiliation(s)
- Tohru Okanishi
- Division of Child Neurology, Brain and Neurosciences, Faculty of Medicine, Tottori University, Yonago 683-8503, Japan
- Comprehensive Epilepsy Center, Seirei Hamamatsu General Hospital, Hamamatsu 430-8558, Japan;
- Correspondence: ; Tel.: +81-859-38-67721; Fax: +81-859-38-6770
| | - Ayataka Fujimoto
- Comprehensive Epilepsy Center, Seirei Hamamatsu General Hospital, Hamamatsu 430-8558, Japan;
| |
Collapse
|
15
|
Hatano K, Fujimoto A, Yamamoto T, Enoki H, Okanishi T. Effects of Vagus Nerve Stimulation following Corpus Callosotomy for Patients with Drug-Resistant Epilepsy. Brain Sci 2021; 11:brainsci11111395. [PMID: 34827393 PMCID: PMC8615502 DOI: 10.3390/brainsci11111395] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/18/2021] [Revised: 10/07/2021] [Accepted: 10/21/2021] [Indexed: 11/16/2022] Open
Abstract
Objective: The effectiveness of vagus nerve stimulation (VNS) for residual seizures after corpus callosotomy (CC) has not yet been fully investigated. We hypothesized that seizure control would be improved by VNS after CC. The purpose of this study was to compare seizure frequency between patients with implantation of a VNS generator (post-VNS group) or without VNS (non-post-VNS group) following CC. Methods: We retrospectively reviewed patients who underwent CC between January 2009 and May 2019 in our institution. We evaluated proportions of ≥50% reduction in seizure frequency (responders) and seizure reduction rate 1 and 2 years after VNS. To investigate factors related to responders, uni- and multivariate logistic regression analyses were performed regarding age, number of anti-seizure medications (ASMs), addition of novel ASMs (levetiracetam, lacosamide or perampanel), and post-VNS or non-post-VNS status. Results: Thirteen post-VNS patients and 24 non-post-VNS patients were analyzed in this study. Responder rate at 1 year after VNS differed significantly between the post-VNS group (53.9%) and non-post-VNS group (12.5%, p = 0.017). Number of ASMs at the time of CC and post-VNS were significantly associated with responders in univariate analyses (odds ratio [OR] 0.34, 95% confidence interval [CI] 0.13–0.88, p = 0.025 and OR 8.2, 95%CI 1.6–41.6, p = 0.011, respectively), whereas age, sex, seizure frequency, and addition of novel ASMs were not. In multivariate analysis, the presence of VNS procedures after CC was the only factor favorably associated with responder status (OR 82.2, 95%CI 1.55–4355.7, p = 0.03). Conclusions: VNS therapy after CC may increase the proportion of responders independent of the addition of novel ASMs.
Collapse
Affiliation(s)
- Keisuke Hatano
- Comprehensive Epilepsy Center, Seirei Hamamatsu General Hospital, 2-12-12 Sumiyoshi, Nakaku, Hamamatsu 430-8558, Shizuoka, Japan; (K.H.); (T.Y.); (H.E.); (T.O.)
| | - Ayataka Fujimoto
- Comprehensive Epilepsy Center, Seirei Hamamatsu General Hospital, 2-12-12 Sumiyoshi, Nakaku, Hamamatsu 430-8558, Shizuoka, Japan; (K.H.); (T.Y.); (H.E.); (T.O.)
- Department of Neurosurgery, Seirei Hamamatsu General Hospital, 2-12-12 Sumiyoshi, Nakaku, Hamamatsu 430-8558, Shizuoka, Japan
- Correspondence: ; Tel.: +81-53-474-2222; Fax: +81-53-475-7596
| | - Takamichi Yamamoto
- Comprehensive Epilepsy Center, Seirei Hamamatsu General Hospital, 2-12-12 Sumiyoshi, Nakaku, Hamamatsu 430-8558, Shizuoka, Japan; (K.H.); (T.Y.); (H.E.); (T.O.)
- Department of Neurosurgery, Seirei Hamamatsu General Hospital, 2-12-12 Sumiyoshi, Nakaku, Hamamatsu 430-8558, Shizuoka, Japan
| | - Hideo Enoki
- Comprehensive Epilepsy Center, Seirei Hamamatsu General Hospital, 2-12-12 Sumiyoshi, Nakaku, Hamamatsu 430-8558, Shizuoka, Japan; (K.H.); (T.Y.); (H.E.); (T.O.)
| | - Tohru Okanishi
- Comprehensive Epilepsy Center, Seirei Hamamatsu General Hospital, 2-12-12 Sumiyoshi, Nakaku, Hamamatsu 430-8558, Shizuoka, Japan; (K.H.); (T.Y.); (H.E.); (T.O.)
| |
Collapse
|
16
|
Romanowski EF, McNamara N. Surgery for Intractable Epilepsy in Pediatrics, a Systematic Review of Outcomes other than Seizure Freedom. Semin Pediatr Neurol 2021; 39:100928. [PMID: 34620460 DOI: 10.1016/j.spen.2021.100928] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/16/2021] [Revised: 08/23/2021] [Accepted: 08/27/2021] [Indexed: 11/25/2022]
Abstract
To perform a systematic review evaluating reported outcomes for epilepsy surgery in pediatric patients with pharmacoresistant epilepsy beyond seizure control, including impact on quality of life, behavioral, neurocognitive outcomes as well as complications, and death. We reviewed articles from both EMBASE and MEDLINE/PubMed articles that met formal criteria (patients ≤18 years, those with intractable epilepsy, at least 5 patients in the case series, published in peer-reviewed journal). Each reviewer independently reviewed the articles and those with discrepancies were discussed and consensus was reached. Out of a total of 536 abstracts obtained from EMBASE and MEDLINE/PubMed searches combined with additional cross-referencing, a total of 98 manuscripts ultimately met all inclusion criteria. The manuscripts were divided into 3 outcomes categories: Quality of Life (16), Cognitive Outcomes (60), and Deficits and Complications (50). Several papers fell into more than 1 category. These were separated by surgical types and evaluated. We found that overall reporting in all domains was variable and inconsistent amongst the different studies. This systematic review highlights the lack of completeness in reporting outcomes and complications involving pediatric epilepsy surgery and discordant results. This underscores the importance of multicenter systematic prospective data collection in pediatric patients who undergo pediatric epilepsy surgery.
Collapse
Affiliation(s)
| | - Nancy McNamara
- Division of Pediatric Neurology, University of Michigan, Ann Arbor, MI.
| |
Collapse
|
17
|
Beatty CW, Lockrow JP, Gedela S, Gehred A, Ostendorf AP. The Missed Value of Underutilizing Pediatric Epilepsy Surgery: A Systematic Review. Semin Pediatr Neurol 2021; 39:100917. [PMID: 34620465 DOI: 10.1016/j.spen.2021.100917] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/05/2021] [Revised: 08/09/2021] [Accepted: 08/11/2021] [Indexed: 10/20/2022]
Abstract
Pediatric epilepsy surgery is underutilized. Only 1%-11% of children with drug resistant epilepsy (DRE) undergo surgical treatment, or less than half of those estimated to benefit. We conducted a systematic review of articles published in PubMed, EMBASE, and Web of Science in order to study the factors related to surgery underutilization as well as the impact on both the individual and the healthcare system. Our review demonstrates multiple factors leading to underutilization, including family misconceptions about epilepsy surgery, lack of provider knowledge, as well as systemic health disparities. While the upfront cost of epilepsy surgery is significant, the long-term financial benefits and reduced health resource utilization tilt the economic advantage in favor of surgery in children with DRE. Additionally, timely interventions improve seizure and cognitive outcomes with low risk of complications. Further interventions are needed at the levels of family, provider, and the healthcare system to increase access to pediatric epilepsy surgery.
Collapse
Affiliation(s)
- Christopher W Beatty
- The Ohio State University and Nationwide Children's Hospital, Division of Neurology, Department of Pediatrics, Columbus, OH
| | - Jason P Lockrow
- Department of Neurology, Section of Pediatric Neurology, University of Washington, Seattle, WA
| | - Satyanarayana Gedela
- Emory University and Children's Healthcare of Atlanta, Division of Neurology, Department of Pediatrics, Atlanta, GA
| | - Alison Gehred
- Medical Library Division, Nationwide Children's Hospital, Columbus, OH
| | - Adam P Ostendorf
- The Ohio State University and Nationwide Children's Hospital, Division of Neurology, Department of Pediatrics, Columbus, OH.
| |
Collapse
|
18
|
Iwasaki M, Iijima K, Kawashima T, Tachimori H, Takayama Y, Kimura Y, Kaneko Y, Ikegaya N, Sumitomo N, Saito T, Nakagawa E, Takahashi A, Sugai K, Otsuki T. Epilepsy surgery in children under 3 years of age: surgical and developmental outcomes. J Neurosurg Pediatr 2021; 28:395-403. [PMID: 34388720 DOI: 10.3171/2021.4.peds21123] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/02/2021] [Accepted: 04/13/2021] [Indexed: 11/06/2022]
Abstract
OBJECTIVE Pediatric epilepsy surgery is known to be effective, but early surgery in infancy is not well characterized. Extensive cortical dysplasia, such as hemimegalencephaly, can cause refractory epilepsy shortly after birth, and early surgical intervention is indicated. However, the complication rate of early pediatric surgery is significant. In this study, the authors assessed the risk-benefit balance of early pediatric epilepsy surgery as relates to developmental outcomes. METHODS This is a retrospective descriptive study of 75 patients who underwent their first curative epilepsy surgery at an age under 3 years at the authors' institution between 2006 and 2019 and had a minimum 1-year follow-up of seizure and developmental outcomes. Clinical information including surgical complications, seizure outcomes, and developmental quotient (DQ) was collected from medical records. The effects of clinical factors on DQ at 1 year after surgery were evaluated. RESULTS The median age at surgery was 6 months, peaking at between 3 and 4 months. Operative procedures included 27 cases of hemispherotomy, 19 cases of multilobar surgery, and 29 cases of unilobar surgery. Seizure freedom was achieved in 82.7% of patients at 1 year and in 71.0% of patients at a mean follow-up of 62.8 months. The number of antiseizure medications (ASMs) decreased significantly after surgery, and 19 patients (30.6%) had discontinued their ASMs by the last follow-up. Postoperative complications requiring cerebrospinal fluid (CSF) diversion surgery, such as hydrocephalus and cyst formation, were observed in 13 patients (17.3%). The mean DQ values were 74.2 ± 34.3 preoperatively, 60.3 ± 23.3 at 1 year after surgery, and 53.4 ± 25.1 at the last follow-up. Multiple regression analysis revealed that the 1-year postoperative DQ was significantly influenced by preoperative DQ and postoperative seizure freedom but not by the occurrence of any surgical complication requiring CSF diversion surgery. CONCLUSIONS Early pediatric epilepsy surgery has an acceptable risk-benefit balance. Seizure control after surgery is important for postoperative development.
Collapse
Affiliation(s)
- Masaki Iwasaki
- 1Department of Neurosurgery, National Center Hospital, National Center of Neurology and Psychiatry (NCNP), Kodaira, Tokyo
| | - Keiya Iijima
- 1Department of Neurosurgery, National Center Hospital, National Center of Neurology and Psychiatry (NCNP), Kodaira, Tokyo
| | - Takahiro Kawashima
- 2Department of Clinical Epidemiology, Translational Medical Center, NCNP, Kodaira, Tokyo
| | - Hisateru Tachimori
- 2Department of Clinical Epidemiology, Translational Medical Center, NCNP, Kodaira, Tokyo
| | - Yutaro Takayama
- 1Department of Neurosurgery, National Center Hospital, National Center of Neurology and Psychiatry (NCNP), Kodaira, Tokyo
| | - Yuiko Kimura
- 1Department of Neurosurgery, National Center Hospital, National Center of Neurology and Psychiatry (NCNP), Kodaira, Tokyo
| | - Yuu Kaneko
- 1Department of Neurosurgery, National Center Hospital, National Center of Neurology and Psychiatry (NCNP), Kodaira, Tokyo
| | - Naoki Ikegaya
- 3Department of Neurosurgery, Yokohama City University Hospital, Yokohama, Kanagawa
| | - Noriko Sumitomo
- 4Department of Child Neurology, National Center Hospital, NCNP, Kodaira, Tokyo
| | - Takashi Saito
- 4Department of Child Neurology, National Center Hospital, NCNP, Kodaira, Tokyo
| | - Eiji Nakagawa
- 4Department of Child Neurology, National Center Hospital, NCNP, Kodaira, Tokyo
| | - Akio Takahashi
- 5Department of Neurosurgery, Shibukawa Medical Center, Shibukawa, Gunma; and
| | - Kenji Sugai
- 4Department of Child Neurology, National Center Hospital, NCNP, Kodaira, Tokyo
| | | |
Collapse
|
19
|
Yokosako S, Muraoka N, Watanabe S, Kosugi K, Takayama Y, Iijima K, Kimura Y, Kaneko Y, Sumitomo N, Saito T, Nakagawa E, Iwasaki M. Corpus callosotomy in pediatric patients with non-lesional epileptic encephalopathy with electrical status epilepticus during sleep. Epilepsy Behav Rep 2021; 16:100463. [PMID: 34195590 PMCID: PMC8239855 DOI: 10.1016/j.ebr.2021.100463] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/30/2021] [Revised: 06/01/2021] [Accepted: 06/02/2021] [Indexed: 11/19/2022] Open
Abstract
Corpus callosotomy (CC) was performed in 3 pediatric patients with refractory epileptic encephalopathy with ESES. IQ was improved after CC with complete resolution of ESES in one patient. Developmental regression ceased after CC with worthwhile seizure reduction and temporary improvement of ESES in 2 patients. Epileptiform discharges disappeared or became lateralized after CC.
Epileptic encephalopathy with electrical status epilepticus during sleep (ESES) is often refractory to medical treatment and leads to poor cognitive outcomes. Corpus callosotomy may be an effective treatment option for drug-resistant ESES with no focal etiology. We retrospectively identified three patients who underwent corpus callosotomy for drug-resistant ESES in our institution. Electroencephalography (EEG) findings and cognitive functions were evaluated before surgery, at 3 months, 6 months, 1 year, and 2 years after surgery. Age at surgery was 6 years 10 months, 7 years 9 months, and 8 years 4 months, respectively. Period between the diagnosis of ESES and surgery ranged from 7 to 25 months. All patients had no obvious structural abnormalities and presented with cognitive decline despite multiple antiseizure medications and steroid therapies. One patient showed complete resolution of ESES and an improvement of intelligence quotient after surgery. Epileptiform EEG was lateralized to one hemisphere after surgery and spike wave index (SWI) was decreased with moderate improvement in development and seizures in the other 2 patients. SWI re-exacerbated from 6 months after surgery, but without subsequent developmental regression in these 2 patients. Corpus callosotomy may become an important treatment option for drug-resistant ESES in patients with no structural abnormalities.
Collapse
Affiliation(s)
- Suguru Yokosako
- Department of Neurosurgery, National Center Hospital, National Center of Neurology and Psychiatry, Kodaira, Tokyo, Japan
| | - Norihiro Muraoka
- Department of Neurosurgery, National Center Hospital, National Center of Neurology and Psychiatry, Kodaira, Tokyo, Japan
| | - Shiena Watanabe
- Department of Child Neurology, National Center Hospital, National Center of Neurology and Psychiatry, Kodaira, Tokyo, Japan
| | - Kenzo Kosugi
- Department of Neurosurgery, National Center Hospital, National Center of Neurology and Psychiatry, Kodaira, Tokyo, Japan
| | - Yutaro Takayama
- Department of Neurosurgery, National Center Hospital, National Center of Neurology and Psychiatry, Kodaira, Tokyo, Japan
| | - Keiya Iijima
- Department of Neurosurgery, National Center Hospital, National Center of Neurology and Psychiatry, Kodaira, Tokyo, Japan
| | - Yuiko Kimura
- Department of Neurosurgery, National Center Hospital, National Center of Neurology and Psychiatry, Kodaira, Tokyo, Japan
| | - Yu Kaneko
- Department of Neurosurgery, National Center Hospital, National Center of Neurology and Psychiatry, Kodaira, Tokyo, Japan
| | - Noriko Sumitomo
- Department of Child Neurology, National Center Hospital, National Center of Neurology and Psychiatry, Kodaira, Tokyo, Japan
| | - Takashi Saito
- Department of Child Neurology, National Center Hospital, National Center of Neurology and Psychiatry, Kodaira, Tokyo, Japan
| | - Eiji Nakagawa
- Department of Child Neurology, National Center Hospital, National Center of Neurology and Psychiatry, Kodaira, Tokyo, Japan
| | - Masaki Iwasaki
- Department of Neurosurgery, National Center Hospital, National Center of Neurology and Psychiatry, Kodaira, Tokyo, Japan
- Corresponding author.
| |
Collapse
|
20
|
Kobayashi Y, Tohyama J, Takahashi Y, Goto T, Haginoya K, Inoue T, Kubota M, Fujita H, Honda R, Ito M, Kishimoto K, Nakamura K, Sakai Y, Takanashi JI, Tanaka M, Tanda K, Tominaga K, Yoshioka S, Kato M, Nakashima M, Saitsu H, Matsumoto N. Clinical manifestations and epilepsy treatment in Japanese patients with pathogenic CDKL5 variants. Brain Dev 2021; 43:505-514. [PMID: 33436160 DOI: 10.1016/j.braindev.2020.12.006] [Citation(s) in RCA: 12] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/24/2020] [Revised: 11/12/2020] [Accepted: 12/15/2020] [Indexed: 11/18/2022]
Abstract
OBJECTIVE Patients with pathogenic cyclin-dependent kinase-like-5 gene (CDKL5) variants are designated CDKL5 deficiency disorder (CDD). This study aimed to delineate the clinical characteristics of Japanese patients with CDD and elucidate possible appropriate treatments. METHODS We recruited patients with pathogenic or likely pathogenic CDKL5 variants from a cohort of approximately 1,100 Japanese patients with developmental and epileptic encephalopathies, who underwent genetic analysis. We retrospectively reviewed clinical, electroencephalogram, neuroimaging, and genetic information. RESULTS We identified 29 patients (21 females, eight males). All patients showed severe developmental delay, especially in males. Involuntary movements were observed in 15 patients. No antiepileptic drugs (AEDs) achieved seizure freedom by monotherapy. AEDs achieving ≥ 50% reduction in seizure frequency were sodium valproate in two patients, vigabatrin in one, and lamotrigine in one. Seizure aggravation was observed during the use of lamotrigine, potassium bromide, and levetiracetam. Adrenocorticotrophic hormone (ACTH) was the most effective treatment. The ketogenic diet (KD), corpus callosotomy and vagus nerve stimulation did not improve seizure frequency in most patients, but KD was remarkably effective in one. The degree of brain atrophy on magnetic resonance imaging (MRI) reflected disease severity. Compared with females, males had lower levels of attained motor development and more severe cerebral atrophy on MRI. CONCLUSION Our patients showed more severe global developmental delay than those in previous studies and had intractable epilepsy, likely because previous studies had lower numbers of males. Further studies are needed to investigate appropriate therapy for CDD, such as AED polytherapy or combination treatment involving ACTH, KD, and AEDs.
Collapse
Affiliation(s)
- Yu Kobayashi
- Department of Child Neurology, NHO Nishiniigata Chuo Hospital, Niigata, Japan.
| | - Jun Tohyama
- Department of Child Neurology, NHO Nishiniigata Chuo Hospital, Niigata, Japan
| | - Yukitoshi Takahashi
- National Epilepsy Center, NHO Shizuoka Institute of Epilepsy and Neurological Disorders, Shizuoka, Japan
| | - Tomohide Goto
- Division of Neurology, Kanagawa Children's Medical Center, Yokohama, Japan
| | - Kazuhiro Haginoya
- Department of Pediatric Neurology, Miyagi Children's Hospital, Sendai, Japan
| | - Takeshi Inoue
- Department of Pediatric Neurology, Osaka City General Hospital, Osaka, Japan
| | - Masaya Kubota
- Division of Neurology, National Center for Child Health and Development, Tokyo, Japan
| | - Hiroshi Fujita
- Department of Pediatrics, NHO Aomori Hospital, Aomori, Japan
| | - Ryoko Honda
- Department of Pediatrics, National Hospital Organization Nagasaki Medical Center, Nagasaki, Japan
| | - Masahiro Ito
- Department of Pediatrics, Tokyo Metropolitan Bokutoh Hospital, Tokyo, Japan
| | - Kanako Kishimoto
- Department of Pediatrics, Osaka Hospital, Japan Community Healthcare Organization (JCHO), Osaka, Japan
| | - Kazuyuki Nakamura
- Department of Pediatrics, Yamagata University Faculty of Medicine, Yamagata, Japan
| | - Yasunari Sakai
- Department of Pediatrics, Graduate School of Medical Sciences, Kyushu University, Fukuoka, Japan
| | - Jun-Ichi Takanashi
- Department of Pediatrics, Tokyo Women's Medical University Yachiyo Medical Center, Yachiyo, Japan
| | - Manabu Tanaka
- Division of General Pediatrics, Saitama Children's Medical Center, Saitama, Japan
| | - Koichi Tanda
- Department of Pediatrics, Japanese Red Cross Kyoto Daiichi Hospital, Kyoto, Japan
| | - Koji Tominaga
- Department of Pediatrics, Graduate School of Medicine, Osaka University, Suita, Japan
| | | | - Mitsuhiro Kato
- Department of Pediatrics, Showa University School of Medicine, Tokyo, Japan
| | - Mitsuko Nakashima
- Department of Biochemistry, Hamamatsu University School of Medicine, Hamamatsu, Japan
| | - Hirotomo Saitsu
- Department of Biochemistry, Hamamatsu University School of Medicine, Hamamatsu, Japan
| | - Naomichi Matsumoto
- Department of Human Genetics, Yokohama City University Graduate School of Medicine, Yokohama, Japan
| |
Collapse
|
21
|
Honda R, Baba H, Adachi K, Koshimoto R, Ono T, Toda K, Tanaka S, Baba S, Yamasaki K, Yatsuhashi H. Developmental outcome after corpus callosotomy for infants and young children with drug-resistant epilepsy. Epilepsy Behav 2021; 117:107799. [PMID: 33610103 DOI: 10.1016/j.yebeh.2021.107799] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/03/2020] [Revised: 12/26/2020] [Accepted: 01/10/2021] [Indexed: 12/21/2022]
Abstract
AIM To examine the developmental and seizure outcomes after corpus callosotomy (CC) in early childhood. METHODS We retrospectively identified 106 patients who underwent CC for drug-resistant epilepsy before the age of 6 years, at the Nagasaki Medical Center, between July 2002 and July 2016. Patients' developmental outcomes were evaluated one year after CC using the Kinder Infant Development Scale. RESULTS The mean preoperative developmental quotient (DQ) was 25.0 (standard deviation [SD], 20.8), and the mean difference between preoperative DQ and one-year postoperative DQ was -1.6 points (SD, 11.6). However, 42.5% of patients had a mean DQ increase of 6.5 points (SD, 6.4), one year after CC from that before surgery. Factors related to the improvement in postoperative DQ were 'low preoperative DQ', 'developmental gain 1 month postoperatively', and 'postoperative seizure-free state'. Approximately 21.7% of patients were seizure-free 1 year after CC. INTERPRETATION Performing CC, in infancy and early childhood for patients with drug-resistant epilepsy and severe developmental impairment, was associated with improved development in 42.5% of patients. Remission of seizures, even if only for a short period, contributed to developmental improvement. From a developmental perspective, CC for drug-resistant epilepsy in early childhood is an effective treatment.
Collapse
Affiliation(s)
- Ryoko Honda
- Department of Pediatrics, National Hospital Organization Nagasaki Medical Center, Nagasaki, Japan; Nagasaki University School of Medicine Graduate School of Biomedical Sciences, Nagasaki, Japan.
| | - Hiroshi Baba
- Department of Neurosurgery, Nishiisahaya Hospital, Nagasaki, Japan; Department of Neurosurgery, National Hospital Organization Nagasaki Medical Center, Nagasaki, Japan
| | - Kohei Adachi
- Department of Comprehensive Community Care Services, Nagasaki Junshin Catholic University, Japan
| | - Rika Koshimoto
- Psychological Counselling Center, National Hospital Organization Nagasaki Medical Center, Nagasaki, Japan
| | - Tomonori Ono
- Department of Neurosurgery, National Hospital Organization Nagasaki Medical Center, Nagasaki, Japan
| | - Keisuke Toda
- Department of Neurosurgery, National Hospital Organization Nagasaki Medical Center, Nagasaki, Japan; Department of Neurosurgery, National Hospital Organization Nagasaki Kawatana Medical Center, Nagasaki, Japan
| | - Shigeki Tanaka
- Department of Pediatrics, National Hospital Organization Nagasaki Medical Center, Nagasaki, Japan
| | - Shiro Baba
- Department of Neurosurgery, Nagasaki University School of Medicine Graduate School of Biomedical Sciences, Nagasaki, Japan
| | - Kazumi Yamasaki
- Clinical Research Center, National Hospital Organization Nagasaki Medical Center, Nagasaki, Japan
| | - Hiroshi Yatsuhashi
- Nagasaki University School of Medicine Graduate School of Biomedical Sciences, Nagasaki, Japan; Clinical Research Center, National Hospital Organization Nagasaki Medical Center, Nagasaki, Japan
| |
Collapse
|
22
|
Uda T, Kuki I, Inoue T, Kunihiro N, Suzuki H, Uda H, Kawashima T, Nakajo K, Nakanishi Y, Maruyama S, Shibata T, Ogawa H, Okazaki S, Kawawaki H, Ohata K, Goto T, Otsubo H. Phase-amplitude coupling of interictal fast activities modulated by slow waves on scalp EEG and its correlation with seizure outcomes of disconnection surgery in children with intractable nonlesional epileptic spasms. J Neurosurg Pediatr 2021; 27:572-580. [PMID: 33636702 DOI: 10.3171/2020.9.peds20520] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/16/2020] [Accepted: 09/04/2020] [Indexed: 11/06/2022]
Abstract
OBJECTIVE Epileptic spasms (ESs) are classified as focal, generalized, or unknown onset ESs. The classification of ESs and surgery in patients without lesions apparent on MRI is challenging. Total corpus callosotomy (TCC) is a surgical option for diagnosis of the lateralization and possible treatment for ESs. This study investigated phase-amplitude coupling (PAC) of fast activity modulated by slow waves on scalp electroencephalography (EEG) to evaluate the strength of the modulation index (MI) before and after disconnection surgery in children with intractable nonlesional ESs. The authors hypothesize that a decreased MI due to surgery correlates with good seizure outcomes. METHODS The authors studied 10 children with ESs without lesions on MRI who underwent disconnection surgeries. Scalp EEG was obtained before and after surgery. The authors collected 20 epochs of 3 minutes each during non-rapid eye movement sleep. The MI of the gamma (30-70 Hz) amplitude and delta (0.5-4 Hz) phase was obtained in each electrode. MIs for each electrode were averaged in 4 brain areas (left/right, anterior/posterior quadrants) and evaluated to determine the correlation with seizure outcomes. RESULTS The median age at first surgery was 2.3 years (range 10 months-9.1 years). Two patients with focal onset ESs underwent anterior quadrant disconnection (AQD). TCC alone was performed in 5 patients with generalized or unknown onset ESs. Two patients achieved seizure freedom. Three patients had residual generalized onset ESs. Disconnection surgeries in addition to TCC consisted of TCC + posterior quadrant disconnection (PQD) (1 patient); TCC + AQD + PQD (1 patient); and TCC + AQD + hemispherotomy (1 patient). Seven patients became seizure free with a mean follow-up period of 28 months (range 5-54 months). After TCC, MIs in 4 quadrants were significantly lower in the 2 seizure-free patients than in the 6 patients with residual ESs (p < 0.001). After all 15 disconnection surgeries in 10 patients, MIs in the 13 target quadrants for each disconnection surgery that resulted in freedom from seizures were significantly lower than in the 26 target quadrants in patients with residual ESs (p < 0.001). CONCLUSIONS In children with nonlesional ESs, PAC for scalp EEG before and after disconnection surgery may be a surrogate marker for control of ESs. The MI may indicate epileptogenic neuronal modulation of the interhemispheric corpus callosum and intrahemispheric subcortical network for ESs. TCC may be a therapeutic option to disconnect the interhemispheric modulation of epileptic networks.
Collapse
Affiliation(s)
- Takehiro Uda
- 1Department of Neurosurgery, Osaka City University Graduate School of Medicine.,Departments of2Pediatric Neurosurgery and
| | - Ichiro Kuki
- 3Pediatric Neurology, Osaka City General Hospital, Osaka, Japan; and
| | - Takeshi Inoue
- 3Pediatric Neurology, Osaka City General Hospital, Osaka, Japan; and
| | | | - Hiroharu Suzuki
- 4Department of Neurology, The Hospital for Sick Children, Toronto, Ontario, Canada
| | - Hiroshi Uda
- 1Department of Neurosurgery, Osaka City University Graduate School of Medicine.,Departments of2Pediatric Neurosurgery and
| | - Toshiyuki Kawashima
- 1Department of Neurosurgery, Osaka City University Graduate School of Medicine
| | - Kosuke Nakajo
- 1Department of Neurosurgery, Osaka City University Graduate School of Medicine
| | | | - Shinsuke Maruyama
- 4Department of Neurology, The Hospital for Sick Children, Toronto, Ontario, Canada
| | - Takashi Shibata
- 4Department of Neurology, The Hospital for Sick Children, Toronto, Ontario, Canada
| | - Hiroshi Ogawa
- 4Department of Neurology, The Hospital for Sick Children, Toronto, Ontario, Canada
| | - Shin Okazaki
- 3Pediatric Neurology, Osaka City General Hospital, Osaka, Japan; and
| | - Hisashi Kawawaki
- 3Pediatric Neurology, Osaka City General Hospital, Osaka, Japan; and
| | - Kenji Ohata
- 1Department of Neurosurgery, Osaka City University Graduate School of Medicine
| | - Takeo Goto
- 1Department of Neurosurgery, Osaka City University Graduate School of Medicine
| | - Hiroshi Otsubo
- 4Department of Neurology, The Hospital for Sick Children, Toronto, Ontario, Canada
| |
Collapse
|
23
|
Oguri M, Okanishi T, Kanai S, Baba S, Nishimura M, Ogo K, Himoto T, Okanari K, Maegaki Y, Enoki H, Fujimoto A. Phase Lag Analyses on Ictal Scalp Electroencephalography May Predict Outcomes of Corpus Callosotomy for Epileptic Spasms. Front Neurol 2021; 11:576087. [PMID: 33424739 PMCID: PMC7793812 DOI: 10.3389/fneur.2020.576087] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/25/2020] [Accepted: 11/11/2020] [Indexed: 11/13/2022] Open
Abstract
Objective: We aimed to clarify the patterns of ictal power and phase lag among bilateral hemispheres on scalp electroencephalography (EEG) recorded pre-operatively during epileptic spasms (ESs) and the correlation with the outcomes following corpus callosotomy. Methods: We enrolled 17 patients who underwent corpus callosotomy for ESs before 20 years of age. After corpus callosotomy, seven patients did not experience further ESs (favorable outcome group), and the remaining 10 patients had ongoing ESs (unfavorable outcome group). We used pre-operative scalp EEG data from monopolar montages using the average reference. The relative power spectrum (PS), ictal power laterality (IPL) among the hemispheres, and phase lag, calculated by the cross-power spectrum (CPS) among symmetrical electrodes (i.e., F3 and F4), were analyzed in the EEG data of ESs from 143 pre-operative scalp video-EEG records. Analyses were conducted separately in each frequency band from the delta, theta, alpha, beta, and gamma range. We compared the means of those data in each patient between favorable and unfavorable outcome groups. Results: Among all frequency bands, no significant differences were seen in the individual mean relative PSs in the favorable and unfavorable outcome group. Although the mean IPLs in each patient tended to be high in the unfavorable outcome group, no significant differences were found. The mean CPSs in the delta, theta, and gamma frequency bands were significantly higher in the unfavorable than in the favorable outcome group. Using the Youden index, the optimal cutoff points of those mean CPS values for unfavorable outcomes were 64.00 in the delta band (sensitivity: 100%, specificity: 80%), 74.20 in the theta band (100, 80%), and 82.05 in the gamma band (100, 80%). Subanalyses indicated that those CPS differences originated from pairs of symmetrical electrodes in the bilateral frontal and temporal areas. Significance: Ictal power and laterality of the ictal power in each frequency band were not associated with the outcomes of CC; however, the phase lags seen in the delta, theta, and gamma frequency bands were larger in the unfavorable than in the favorable outcome group. The phase lags may predict outcomes of CC for ESs on pre-surgical scalp-ictal EEGs.
Collapse
Affiliation(s)
- Masayoshi Oguri
- Department of Medical Technology, Kagawa Prefectural University of Health Sciences, Takamatsu, Japan
| | - Tohru Okanishi
- Division of Child Neurology, Faculty of Medicine, Institute of Neurological Sciences, Tottori University, Yonago, Japan.,Department of Child Neurology, Seirei-Hamamatsu General Hospital, Hamamatsu, Japan
| | - Sotaro Kanai
- Division of Child Neurology, Faculty of Medicine, Institute of Neurological Sciences, Tottori University, Yonago, Japan.,Department of Child Neurology, Seirei-Hamamatsu General Hospital, Hamamatsu, Japan
| | - Shimpei Baba
- Department of Child Neurology, Seirei-Hamamatsu General Hospital, Hamamatsu, Japan
| | - Mitsuyo Nishimura
- Department of Clinical Laboratory, University of Tsukuba Hospital, Tsukuba, Japan
| | - Kaoru Ogo
- Department of Medical Technology, Kagawa Prefectural University of Health Sciences, Takamatsu, Japan
| | - Takashi Himoto
- Department of Medical Technology, Kagawa Prefectural University of Health Sciences, Takamatsu, Japan
| | - Kazuo Okanari
- Department of Pediatrics, Faculty of Medicine, Oita University, Yufu, Japan
| | - Yoshihiro Maegaki
- Division of Child Neurology, Faculty of Medicine, Institute of Neurological Sciences, Tottori University, Yonago, Japan
| | - Hideo Enoki
- Department of Child Neurology, Seirei-Hamamatsu General Hospital, Hamamatsu, Japan
| | - Ayataka Fujimoto
- Comprehensive Epilepsy Center, Seirei-Hamamatsu General Hospital, Hamamatsu, Japan
| |
Collapse
|
24
|
Abstract
Epileptic Spasms (ES) is a type of seizure usually occurring in the context of a severe childhood epileptic syndrome associated to significant Electroencephalogram (EEG) abnormalities. There are three scenarios in which ES may occur. The first one is represented by West Syndrome (WS): ES occur in a previously non encephalopathic infant in association with the development of a hypsarrhythmic EEG pattern. In most cases, standard treatment with Adrenocorticotropic Hormone (ACTH), steroids or vigabatrin leads to a reversal of the electroclinical picture. The second scenario is represented by Developmental and Epileptic Encephalopathies (DEEs): ES are documented, often along other seizures types, in an infant who often shows developmental delay since birth; the EEG pattern is pathological both in wakefulness and in sleep, without typical features of hypsarrhythmia; therapies (with the exception of few potentially treatable syndromes) are poorly effective. The last scenario is represented by ES in the context of Focal Epilepsies (FEs): ES, sometimes showing focal signs or closely related to focal seizures, are associated with focal brain lesions. Treatment with ACTH, steroids or vigabatrin may not be effective as well as antiepileptic drugs for focal epilepsies. In drug-resistant patients, surgery should be considered. Although there are some gaps in our current scientific knowledge concerning the peculiar electroclinical and physiopathological features of ES, we nowadays possess the necessary tools to correctly frame this unique seizure type into one of these scenarios and therefore properly manage the diagnostic and therapeutic workup.
Collapse
Affiliation(s)
- Lucia Fusco
- Intensive Neurological Diagnostic Unit, Neuroscience Department, Bambino Gesù Children's Hospital, Rome, Italy.
| | - Domenico Serino
- Paediatric Neurology Department, Royal Aberdeen Children's Hospital, Aberdeen, UK
| | - Marta Elena Santarone
- Intensive Neurological Diagnostic Unit, Neuroscience Department, Bambino Gesù Children's Hospital, Rome, Italy
| |
Collapse
|
25
|
Yang H, Yang Z, Peng J, Huang Y, Yang Z, Yin F, Wu L. Early surgical intervention for structural infantile spasms in two patients under 6 months old: a case report. Acta Epileptologica 2020. [DOI: 10.1186/s42494-020-00025-x] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022] Open
Abstract
Abstract
Background
Infantile spasms (IS) are the most common childhood epileptic encephalopathy. Focal cortical dysplasia (FCD) and gray matter heterotopias (GH) are common structural causes of IS. The recommended first-line treatment for IS patients with structural causes is surgical intervention, according to the International League Against Epilepsy (ILAE) commission guidelines. However, there is currently no consensus on appropriate timings of surgery.
Case presentations
Two structural IS cases are presented here: one was caused by FCD, and the other by GH. Both patients exhibited recurrent seizures at the age of 2 months, had poor responses to various antiepileptic drugs (AEDs) and displayed severe mental and motor developmental retardation. Seizure types included focal seizures and spasms. Brain magnetic resonance imaging showed abnormal gray signal or suspicious FCD lesions that coincided with the origin of the focal seizures. The patients underwent lesion resection before the age of 6 months. Follow-up observation showed that seizures of both patients were completely controlled several days after the surgery. All AEDs were gradually reduced in dosage within 1 year, and the mental and motor development almost returned to normal.
Conclusion
Early resection of lesions in structural IS patients has benefits of effectively controlling convulsions and improving developmental retardation. Infants at several months of age can well tolerate craniotomy, and their cognitive development is more likely to return to normal after early surgery.
Collapse
|
26
|
Tao JX, Satzer D, Issa NP, Collins J, Wu S, Rose S, Henry J, Santos de Lima F, Nordli D, Warnke PC. Stereotactic laser anterior corpus callosotomy for Lennox‐Gastaut syndrome. Epilepsia 2020; 61:1190-1200. [DOI: 10.1111/epi.16535] [Citation(s) in RCA: 13] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/18/2020] [Revised: 04/20/2020] [Accepted: 04/21/2020] [Indexed: 12/27/2022]
Affiliation(s)
- James X. Tao
- Department of Neurology University of Chicago Chicago IL USA
| | - David Satzer
- Department of Neurosurgery University of Chicago Chicago IL USA
| | - Naoum P. Issa
- Department of Neurology University of Chicago Chicago IL USA
| | - John Collins
- Department of Radiology University of Chicago Chicago IL USA
| | - Shasha Wu
- Department of Neurology University of Chicago Chicago IL USA
| | - Sandra Rose
- Department of Neurology University of Chicago Chicago IL USA
| | - Julia Henry
- Department of Pediatrics University of Chicago Chicago IL USA
| | | | - Douglas Nordli
- Department of Pediatrics University of Chicago Chicago IL USA
| | - Peter C. Warnke
- Department of Neurosurgery University of Chicago Chicago IL USA
| |
Collapse
|
27
|
Specchio N, Pietrafusa N, Ferretti A, De Palma L, Santarone ME, Pepi C, Trivisano M, Vigevano F, Curatolo P. Treatment of infantile spasms: why do we know so little? Expert Rev Neurother 2020; 20:551-566. [PMID: 32316776 DOI: 10.1080/14737175.2020.1759423] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
Abstract
INTRODUCTION Infantile spasm (IS) is an epileptic syndrome with typical onset within the first 2 years of life. This condition might be caused by several etiologies. IS is associated with pathological neuronal networks; however, definite hypotheses on neurobiological processes are awaited. AREAS COVERED Changes in NMDA and GABAB receptors and increase of Ca2+ conductance are some of the possible pathophysiological mechanisms. Animal models can help, but most have only some features of IS. Outcome is strongly affected by etiology and the timing of treatment, which relies still on ACTH, oral steroids, and vigabatrin. No significant differences in terms of efficacy have been documented, though a combination of ACTH and vigabatrin seems to be associated with better long-term outcomes. Despite the increasing knowledge about the etiology and pathophysiology of IS, in the last years, no new treatment approaches have been recognized to be able to modify the neurobiological process underlying IS. Precision medicine has far to come in IS. EXPERT OPINION Recently, no new therapeutic options for IS have emerged, probably due to the lack of reliable animal models and to the extreme variability in etiologies. Consequently, the outlook for patients and families is poor and early recognition and intervention remain research priorities.
Collapse
Affiliation(s)
- Nicola Specchio
- Rare and Complex Epilepsy Unit, Department of Neuroscience, Bambino Gesù Children's Hospital, IRCCS , Rome, 00165, Italy.,Member of European Reference Network EpiCARE
| | - Nicola Pietrafusa
- Rare and Complex Epilepsy Unit, Department of Neuroscience, Bambino Gesù Children's Hospital, IRCCS , Rome, 00165, Italy
| | - Alessandro Ferretti
- Rare and Complex Epilepsy Unit, Department of Neuroscience, Bambino Gesù Children's Hospital, IRCCS , Rome, 00165, Italy
| | - Luca De Palma
- Rare and Complex Epilepsy Unit, Department of Neuroscience, Bambino Gesù Children's Hospital, IRCCS , Rome, 00165, Italy
| | - Marta Elena Santarone
- Department of Neuroscience, Bambino Gesù Children's Hospital, IRCCS , 00165, Rome, Italy
| | - Chiara Pepi
- Rare and Complex Epilepsy Unit, Department of Neuroscience, Bambino Gesù Children's Hospital, IRCCS , Rome, 00165, Italy.,Child Neurology and Psychiatry Unit, Systems Medicine Department, Tor Vergata University , 00133, Rome, Italy
| | - Marina Trivisano
- Rare and Complex Epilepsy Unit, Department of Neuroscience, Bambino Gesù Children's Hospital, IRCCS , Rome, 00165, Italy
| | - Federico Vigevano
- Member of European Reference Network EpiCARE.,Department of Neuroscience, Bambino Gesù Children's Hospital, IRCCS , 00165, Rome, Italy
| | - Paolo Curatolo
- Child Neurology and Psychiatry Unit, Systems Medicine Department, Tor Vergata University , 00133, Rome, Italy
| |
Collapse
|
28
|
Kanai S, Okanishi T, Nishimura M, Oguri M, Enoki H, Maegaki Y, Fujimoto A. Insufficient Efficacy of Corpus Callosotomy for Epileptic Spasms With Biphasic Muscular Contractions. Front Neurol 2020; 11:232. [PMID: 32300331 PMCID: PMC7142229 DOI: 10.3389/fneur.2020.00232] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/26/2019] [Accepted: 03/11/2020] [Indexed: 12/03/2022] Open
Abstract
Corpus callosotomy (CC) is the surgical strategy for drug-resistant epileptic seizures including epileptic spasms (ES). In this study we report a subtype of ES which is accompanied by two consecutive muscular contractions. This subtype has not been previously classified and may emerge via a complex epileptic network. We named these seizures “epileptic spasms with biphasic muscular contractions (ES-BMC)” and analyzed the association between them and CC outcomes. We enrolled 17 patients with ES who underwent CC before 20 years of age, and analyzed the records of long-term video-electroencephalogram (EEG) recordings. The outcomes of CC were ES-free (Engel's classification I) in 7 and residual ES (II to IV) in 10 patients. We statistically analyzed the associations between the presence of preoperative ES-BMC and the outcomes. Ages at CC ranged from 17 to 237 months. We analyzed 4–44 ictal EEGs for each patient. Five patients presented with ES-BMC with 6–40% of their whole ES on the presurgical video-EEG recordings, and all of them exhibited residual ES outcomes following CC. A Fisher's exact test revealed a significant positive correlation between the presence of preoperative ES-BMC and persistence of ES following CC (p = 0.044, odds ratio = 15.0, risk ratio = 2.0). The presence of ES-BMC may be useful in the presurgical prediction of CC outcomes in patients with ES.
Collapse
Affiliation(s)
- Sotaro Kanai
- Division of Child Neurology, Faculty of Medicine, Institute of Neurological Sciences, Tottori University, Yonago, Japan
- Department of Child Neurology, Seirei-Hamamatsu General Hospital, Hamamatsu, Japan
| | - Tohru Okanishi
- Department of Child Neurology, Seirei-Hamamatsu General Hospital, Hamamatsu, Japan
- *Correspondence: Tohru Okanishi
| | - Mitsuyo Nishimura
- Laboratory of Neurophysiology, Seirei-Hamamatsu General Hospital, Hamamatsu, Japan
| | - Masayoshi Oguri
- Division of Pathobiological Science and Technology, Faculty of Medicine, School of Health Sciences, Tottori University, Yonago, Japan
| | - Hideo Enoki
- Department of Child Neurology, Seirei-Hamamatsu General Hospital, Hamamatsu, Japan
| | - Yoshihiro Maegaki
- Division of Child Neurology, Faculty of Medicine, Institute of Neurological Sciences, Tottori University, Yonago, Japan
| | - Ayataka Fujimoto
- Comprehensive Epilepsy Center, Seirei-Hamamatsu General Hospital, Hamamatsu, Japan
| |
Collapse
|
29
|
Zhou P, Ding X, Zeng Q, Zou H, Liao J, Cao D. A case report of microcephaly and refractory West syndrome associated with WDR62 mutation. Acta Epileptologica 2020; 2. [DOI: 10.1186/s42494-020-00012-2] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022] Open
Abstract
AbstractThe autosomal recessive form of primary microcephaly (MCPH) is a rare disorder characterized by microcephaly with variable degree of intellectual disability. WDR62 has been reported as the second causative gene of MCPH2. West syndrome is a severe epilepsy syndrome composed of the triad of spasms, hypsarrhythmia, and mental retardation. There are limited clinical reports regarding WDR62 mutation and West syndrome. Here we report a boy who was identified with WDR62 mutation and was followed up from age 3 months to 5 months and 14 days. He had the first seizure as the classic epileptic spasm at the age of 3 months. Psychomotor retardation was noted before the seizure occurred. The head circumference was 38.5 cm (SD 2.6) when he was 4 months old, no dysmorphic facial features were observed. He couldn’t support his head steadily or turn over. He was able to laugh when tricked by the parents, but couldn’t track the sound and light. At the early stage, the electroencephalogram showed multifocal discharges, which evolved into hypsarrhythmia one month later, and brain MRI showed developmental malformation of cerebral gyrus. Two heterozygous mutations were identified in WDR62 by whole exome sequencing c.1535G > A, p.R512Q and c.2618dupT, p.K874Qfs*40. The patient was administrated with oral sodium valproate, nitrazepam, intramuscular adrenocorticotropic hormone for 2 weeks, and followed by prednisone, levetiracetam, topiramate and vigabatrin. However, there was no significant improvement on the seizure control after these treatments. According to the genetic report and clinical manifestation, we speculated that the WDR62 compound heterozygous mutation is responsible for the serious clinical phenotype.
Collapse
|
30
|
Kanai S, Oguri M, Okanishi T, Itamura S, Baba S, Nishimura M, Homma Y, Maegaki Y, Enoki H, Fujimoto A. Symmetry of ictal slow waves may predict the outcomes of corpus callosotomy for epileptic spasms. Sci Rep 2019; 9:19733. [PMID: 31875025 DOI: 10.1038/s41598-019-56303-3] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/01/2018] [Accepted: 12/05/2019] [Indexed: 12/05/2022] Open
Abstract
We aimed to analyse the ictal electrographic changes on scalp electroencephalography (EEG), focusing on high-voltage slow waves (HVSs) in children with epileptic spasms (ES) and tonic spasms (TS) and then identified factors associated with corpus callosotomy (CC) outcomes. We enrolled 17 patients with ES/TS who underwent CC before 20 years of age. Post-CC Engel’s classification was as follows: I in 7 patients, II in 2, III in 4, and IV in 4. Welch’s t-test was used to analyse the correlation between ictal HVSs and CC outcomes based on the following three symmetrical indices: (1) negative peak delay: interhemispheric delay between negative peaks; (2) amplitude ratio: interhemispheric ratio of amplitude values for the highest positive peaks; and (3) duration ratio: interhemispheric ratio of slow wave duration. Ages at CC ranged from 17–237 months. Four to 15 ictal EEGs were analysed for each patient. The negative peak delay, amplitude ratio and duration ratio ranged from 0–530 ms, 1.00–7.40 and 1.00–2.74, respectively. The negative peak delay, amplitude ratio and duration ratio were significantly higher in the seizure residual group (p = 0.017, <0.001, <0.001, respectively). Symmetry of ictal HVSs may predict favourable outcomes following CC for ES/TS.
Collapse
|
31
|
Okanishi T, Fujimoto A, Okanari K, Baba S, Ichikawa N, Nishimura M, Enoki H. Corpus callosotomy for drug-resistant spasms associated with tuberous sclerosis complex. Epilepsy Behav 2019; 98:228-232. [PMID: 31394351 DOI: 10.1016/j.yebeh.2019.06.007] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/10/2019] [Revised: 06/01/2019] [Accepted: 06/02/2019] [Indexed: 10/26/2022]
Abstract
BACKGROUND Corpus callosotomy (CC) has recently been adopted for the treatment of drug-resistant epileptic spasms and tonic spasms. In the present study, we investigated CC outcomes among patients with drug-resistant epileptic spasms or tonic spasms associated with tuberous sclerosis complex (TSC). METHODS We retrospectively collected data from seven patients (3 women, 4 men) with diagnosed TSC and who were treated using CC at Seirei Hamamatsu General Hospital in Japan. All patients had experienced drug-resistant epileptic spasms (<3 s of muscular contraction) or tonic spasms (>3 s) prior to CC, which were confirmed via video-electroencephalogram monitoring. RESULTS All patients exhibited multiple bilateral cortical tubers on brain magnetic resonance imaging. The main seizure types were epileptic spasms in four, tonic spasms in one, and both seizure types in two patients. Patients underwent total CC between the ages of 25 months and 21.5 years. Additional resection or disconnection was performed in two patients. The follow-up period after CC ranged between 9 months and 3.5 years. Three patients achieved remission from spasms following CC alone. Two other patients became free from spasms several months after CC but required an additional focus disconnection or medical treatment. The remaining two patients continued to show spasms or asymmetrical tonic seizures. CONCLUSION Total CC resulted in freedom from drug-resistant epileptic or tonic spasms in several patients with TSC. Stepwise progression from CC to additional resection or disconnection surgery may aid in the treatment of spasms secondary to TSC.
Collapse
Affiliation(s)
- Tohru Okanishi
- Department of Child Neurology, Comprehensive Epilepsy Center, Seirei Hamamatsu General Hospital, Hamamatsu 430-8558, Japan.
| | - Ayataka Fujimoto
- Epilepsy and Surgery, Comprehensive Epilepsy Center, Seirei Hamamatsu General Hospital, Hamamatsu 430-8558, Japan
| | - Kazuo Okanari
- Department of Pediatrics, Oita University Faculty of Medicine, Yufu 879-5503, Japan
| | - Shimpei Baba
- Department of Child Neurology, Comprehensive Epilepsy Center, Seirei Hamamatsu General Hospital, Hamamatsu 430-8558, Japan
| | - Naoki Ichikawa
- Epilepsy and Surgery, Comprehensive Epilepsy Center, Seirei Hamamatsu General Hospital, Hamamatsu 430-8558, Japan
| | - Mitsuyo Nishimura
- Division of Clinical Laboratory, Seirei Hamamatsu General Hospital, Hamamatsu 430-8558, Japan
| | - Hideo Enoki
- Department of Child Neurology, Comprehensive Epilepsy Center, Seirei Hamamatsu General Hospital, Hamamatsu 430-8558, Japan
| |
Collapse
|
32
|
Baba S, Vakorin VA, Doesburg SM, Nagamori C, Cortez MA, Honda R, Ono T, Toda K, Nishimoto H, Ebihara T, Sakai K, Ochi A, Snead OC, Baba H, Otsubo H. EEG before and after total corpus callosotomy for pharmacoresistant infantile spasms: Fast oscillations and slow-wave connectivity in hypsarrhythmia. Epilepsia 2019; 60:1849-1860. [PMID: 31407333 DOI: 10.1111/epi.16295] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/04/2018] [Revised: 06/30/2019] [Accepted: 07/01/2019] [Indexed: 01/27/2023]
Abstract
OBJECTIVE We analyzed the features of fast oscillations (FOs) and connectivity in hypsarrhythmia to identify biomarkers for predicting seizure outcomes after total corpus callosotomy (TCC) in children with pharmacoresistant infantile spasms (IS). We hypothesize that the power of FOs and connectivity of slow waves in hypsarrhythmia would indicate the prognosis of IS. METHOD We retrospectively identified 42 children with pharmacoresistant IS who underwent TCC from 2009 to 2014 at Nagasaki Medical Center. We collected preoperative hypsarrhythmia for 200 seconds from each child. Children were categorized into three groups with interictal epileptic discharges on EEG at 6 months after TCC: group A, no epileptic discharge; group B, lateralized epileptic discharges; and group C; bilateral epileptic discharges. We analyzed spectral power and phase synchronization in preoperative hypsarrhythmia among the three groups. RESULTS We found 10 children in group A, 10 children in group B, and 22 children in group C. All group A and 1 in group B achieved seizure freedom after TCC. Six (67%) of 9 group B children who underwent further surgeries achieved seizure freedom. Ten (45%) of group C children had seizure reduction >50% after TCC, and 13 (87%) of 15 children who underwent further surgeries had residual seizures. The clinical profiles of the three groups did not differ significantly. The power of FOs (≥45 Hz) in hypsarrhythmia was significantly stronger in group C at the midline and temporal regions than in groups B and A (P = .014). The connectivity of theta (4-9 Hz) and FOs (29-70 Hz) tended to increase in group C, compared with the increased connectivity of 1-2 Hz in group A (P = .08). SIGNIFICANCE The increased power and connectivity of FOs in hypsarrhythmia may correlate with pharmacoresistant and surgically resistant seizures in IS. The existence and connectivity of FOs are associated with unilateral/bilateral cortical epileptogenicity in hypsarrhythmia. Prominent slow waves and connectivity without FOs might correlate with seizure freedom after TCC. Modulation of the callosal system with subcortical/cortical epileptic discharges might play a role in generating hypsarrhythmia and IS.
Collapse
Affiliation(s)
- Shiro Baba
- Division of Neurology, The Hospital for Sick Children, Toronto, Canada.,Department of Neurosurgery, Nagasaki University Graduate School of Biomedical Sciences, Nagasaki, Japan
| | - Vasily A Vakorin
- Department of Biomedical Physiology and Kinesiology, Simon Fraser University, Burnaby, Canada.,Behavioral and Cognitive Neuroscience Institute, Simon Fraser University, Burnaby, Canada
| | - Sam M Doesburg
- Department of Biomedical Physiology and Kinesiology, Simon Fraser University, Burnaby, Canada.,Behavioral and Cognitive Neuroscience Institute, Simon Fraser University, Burnaby, Canada.,Department of Psychology, University of Toronto, Toronto, Canada.,Department of Medical Imaging, University of Toronto, Toronto, Canada
| | - Chizuko Nagamori
- Division of Neurology, The Hospital for Sick Children, Toronto, Canada
| | - Miguel A Cortez
- Division of Neurology, The Hospital for Sick Children, Toronto, Canada
| | - Ryoko Honda
- Department of Paediatrics and Epilepsy Center, National Hospital Organization Nagasaki Medicine Center, Nagasaki, Japan
| | - Tomonori Ono
- Department of Neurosurgery and Epilepsy Center, National Hospital Organization Nagasaki Medicine Center, Nagasaki, Japan
| | - Keisuke Toda
- Department of Neurosurgery and Epilepsy Center, National Hospital Organization Nagasaki Medicine Center, Nagasaki, Japan
| | - Hanako Nishimoto
- Division of Neurology, The Hospital for Sick Children, Toronto, Canada
| | - Toshihiro Ebihara
- Division of Neurology, The Hospital for Sick Children, Toronto, Canada
| | - Kana Sakai
- Division of Neurology, The Hospital for Sick Children, Toronto, Canada
| | - Ayako Ochi
- Division of Neurology, The Hospital for Sick Children, Toronto, Canada
| | - O Carter Snead
- Division of Neurology, The Hospital for Sick Children, Toronto, Canada
| | - Hiroshi Baba
- Department of Neurosurgery and Epilepsy Center, National Hospital Organization Nagasaki Medicine Center, Nagasaki, Japan
| | - Hiroshi Otsubo
- Division of Neurology, The Hospital for Sick Children, Toronto, Canada
| |
Collapse
|
33
|
Iimura Y, Sugano H, Nakajima M, Higo T, Suzuki H, Mitsuhashi T, Ueda T, Karagiozov K, Igarashi A, Otsubo H, Arai H. Is decremental modulation index on scalp EEG a sign of good seizure outcome? A Sturge-Weber syndrome case with epileptic spasms. Clin Neurophysiol 2019; 130:1499-1501. [PMID: 31295718 DOI: 10.1016/j.clinph.2019.06.002] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/08/2019] [Accepted: 06/13/2019] [Indexed: 10/26/2022]
Affiliation(s)
- Yasushi Iimura
- Department of Neurosurgery, Epilepsy Center, Juntendo University, Tokyo, Japan.
| | - Hidenori Sugano
- Department of Neurosurgery, Epilepsy Center, Juntendo University, Tokyo, Japan
| | - Madoka Nakajima
- Department of Neurosurgery, Epilepsy Center, Juntendo University, Tokyo, Japan
| | - Takuma Higo
- Department of Neurosurgery, Epilepsy Center, Juntendo University, Tokyo, Japan
| | - Hiroharu Suzuki
- Department of Neurosurgery, Epilepsy Center, Juntendo University, Tokyo, Japan; Division of Neurology, The Hospital for Sick Children, Toronto, Canada
| | - Takumi Mitsuhashi
- Department of Neurosurgery, Epilepsy Center, Juntendo University, Tokyo, Japan
| | - Tetsuya Ueda
- Department of Neurosurgery, Epilepsy Center, Juntendo University, Tokyo, Japan
| | - Kostadin Karagiozov
- Department of Neurosurgery, Epilepsy Center, Juntendo University, Tokyo, Japan
| | - Ayuko Igarashi
- Department of Pediatrics, Epilepsy Center, Juntendo University, Tokyo, Japan
| | - Hiroshi Otsubo
- Division of Neurology, The Hospital for Sick Children, Toronto, Canada
| | - Hajime Arai
- Department of Neurosurgery, Epilepsy Center, Juntendo University, Tokyo, Japan
| |
Collapse
|
34
|
Itamura S, Okanishi T, Nishimura M, Kanai S, Baba S, Masuda Y, Homma Y, Enoki H, Fujimoto A. Analysis for the Association Between Corpus Callosum Thickness and Corpus Callosotomy Outcomes for Patients With Epileptic Spasms or Tonic Spasms. Pediatr Neurol 2019; 95:79-83. [PMID: 30819564 DOI: 10.1016/j.pediatrneurol.2019.01.012] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/12/2018] [Revised: 01/21/2019] [Accepted: 01/21/2019] [Indexed: 10/27/2022]
Abstract
BACKGROUND This retrospective study is designed to determine whether the thickness of the corpus callosum can predict corpus callosotomy outcome in pediatric patients with epileptic or tonic spasms. METHODS We retrospectively studied 25 patients (18 boys) with intractable childhood-onset epileptic or tonic spasms who underwent corpus callosotomy between March 2008 and January 2017. Seizure outcomes were classified as favorable (class I and II of Engel's outcome classification) or unfavorable (class III and IV of Engel's outcome classification) at 12 months postoperatively. We measured the corpus callosum area on the midline and maximum cerebral area on the para-midline in sagittal magnetic resonance images just before surgery. We statistically analyzed the associations between surgical outcomes and corpus callosum area, corpus callosum area/maximum cerebral area (corpus callosum/cerebrum ratio), or age at magnetic resonance imaging just before surgery, using univariate and multivariate logistic regression analyses. RESULTS Age at surgery ranged from six to 237 months (mean: 119). Main seizure types were epileptic spasms in 17 patients and tonic spasms in eight. Favorable outcomes occurred in 10 (40%) patients and unfavorable outcomes in 15 (60%). Both corpus callosum area and corpus callosum/cerebrum ratio did not show significant associations with the outcomes in the univariate and multivariate analyses. The 95% confidence intervals of corpus callosum/cerebrum ratio strongly overlapped between the favorable and unfavorable outcome groups. CONCLUSIONS Our data failed to support that corpus callosum thickness on the sagittal image is associated with corpus callosotomy outcomes in pediatric patients with epileptic spasms or tonic spasms.
Collapse
|
35
|
Lee KH, Lee YJ, Seo JH, Baumgartner JE, Westerveld M. Epilepsy Surgery in Children versus Adults. J Korean Neurosurg Soc 2019; 62:328-335. [PMID: 31085959 PMCID: PMC6514317 DOI: 10.3340/jkns.2019.0026] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/22/2019] [Accepted: 02/24/2019] [Indexed: 11/29/2022] Open
Abstract
Epilepsy is one of the most common chronic neurological disorder affecting 6–7 per 1000 worldwide. Nearly one-third of patients with newly diagnosed epilepsy continue to have recurrent seizures despite adequate trial of more than two anti-seizure drugs : drug-resistant epilepsy (DRE). Children with DRE often experience cognitive and psychosocial co-morbidities requiring more urgent and aggressive treatment than adults. Epilepsy surgery can result in seizure-freedom in approximately two-third of children with improvement in cognitive development and quality of life. Understanding fundamental differences in etiology, co-morbidity, and neural plasticity between children and adults is critical for appropriate selection of surgical candidates, appropriate presurgical evaluation and surgical approach, and improved overall outcome.
Collapse
Affiliation(s)
- Ki Hyeong Lee
- Comprehensive Epilepsy Center, Advent Health for Children, Orlando, FL, USA
| | - Yun-Jin Lee
- Comprehensive Epilepsy Center, Advent Health for Children, Orlando, FL, USA.,Department of Pediatrics, Pusan University College of Medicine, Yangsan, Korea
| | - Joo Hee Seo
- Comprehensive Epilepsy Center, Advent Health for Children, Orlando, FL, USA
| | | | - Michael Westerveld
- Comprehensive Epilepsy Center, Advent Health for Children, Orlando, FL, USA
| |
Collapse
|