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Murray-Douglass A, Papacostas J, Ovington A, Wensley I, Campbell R, Gillinder L. Stereoelectroencephalography: a review of complications and outcomes in a new Australian centre. Intern Med J 2024; 54:35-42. [PMID: 38165070 DOI: 10.1111/imj.16284] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/25/2023] [Accepted: 11/01/2023] [Indexed: 01/03/2024]
Abstract
BACKGROUND Surgical management of refractory focal epilepsy requires preoperative localisation of the epileptogenic zone (EZ). To augment noninvasive studies, stereoelectroencephalography (SEEG) is being increasingly adopted as a form of intracranial monitoring. AIMS This study aimed to determine the rate of complications for patients undergoing SEEG and to report the success of SEEG with regard to EZ detection and seizure outcome following definitive surgery. METHODS A retrospective cohort design investigated all cases of SEEG at our institution. Surgical, anaesthetic and medical complications with subsequent epilepsy surgery and seizure outcome data were extracted from medical records. Multivariate logistic regression was used to investigate the relationship between both the number of electrodes per patient and the duration of SEEG recording with the rate of complications. RESULTS Sixty-four patients with 66 implantations were included. Headache was the most common complication (n = 54, 82%). There were no major surgical or medical complications. Two anaesthetic complications occurred. EZ localisation was successful in 63 cases (95%). Curative intent surgery was performed in 39 patients (59%) and 23 patients achieved an Engel class I outcome (59% of those undergoing surgery). The number of electrodes and duration of recording were not associated with complications. CONCLUSIONS No patients in our series experienced major surgical or medical complications and we have highlighted the challenges associated with neuroanaesthesia in SEEG. Our complication rates and seizure outcomes are equivalent to published literature indicating that this technique can be successfully established in newer centres using careful case selection. Standardised reporting of SEEG complications should be adopted.
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Affiliation(s)
| | - Jason Papacostas
- Mater Neurosciences Centre, Mater Hospital, Brisbane, Queensland, Australia
| | - Anne Ovington
- Mater Neurosciences Centre, Mater Hospital, Brisbane, Queensland, Australia
| | - Isaac Wensley
- Mater Neurosciences Centre, Mater Hospital, Brisbane, Queensland, Australia
| | - Robert Campbell
- Mater Neurosciences Centre, Mater Hospital, Brisbane, Queensland, Australia
| | - Lisa Gillinder
- Mater Neurosciences Centre, Mater Hospital, Brisbane, Queensland, Australia
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Hoppe C, Beeres K, Witt JA, Sassen R, Helmstaedter C. Clinical adult outcome 11-30 years after pediatric epilepsy surgery: Complications and other surgical adverse events, seizure control, and cure of epilepsy. Epilepsia 2023; 64:335-347. [PMID: 36468792 DOI: 10.1111/epi.17477] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/08/2022] [Revised: 11/25/2022] [Accepted: 12/02/2022] [Indexed: 12/12/2022]
Abstract
OBJECTIVE Pediatric epilepsy surgery promises seizure freedom or even cure of epilepsy. We evaluated the long-term (≥10 years) adult clinical outcome including surgery-related adverse events and complications, which are generally underreported. METHODS A monocentric, single-arm, questionnaire study in now adult patients who underwent epilepsy surgery during childhood. A novel ad hoc parental/patient questionnaire, which addressed diverse outcome domains was applied. RESULTS From a total of 353 eligible patients, 203 could be contacted (3 patients died of causes unknown) and 101 (50%) returned appropriately filled-in surveys. No evidence for a survey-response bias was found. The rate of surgical complications according to the patient records was 9%. As regards the survey, half of the parents/patients reported surgical adverse events (expected and unexpected issues) and one-third reported permanent aversive sequels. Two-thirds of the patients were seizure-free during the last year before follow-up; 63% were Engel class 1A; favorable seizure outcomes (including auras only) were obtained in 73%; and 54% were seizure-free and off antiseizure medicine (ASM), that is, cured of epilepsy. In non-seizure-free patients, seizure relapse occurred at any time during the follow-up interval but 87% of those with a seizure-free first postoperative year were seizure-free at follow-up. One patient experienced a seizure relapse during the ASM withdrawal trial but became seizure-free again with ASMs. Eleven patients reported an increased number of ASMs as compared to the time before surgery. Earlier focal surgery did not affect the long-term clinical outcome. SIGNIFICANCE Pediatric epilepsy surgery was capable of curing epilepsy in about one-half of the children and to significantly control seizures in about three-fourths. Long-term success of focal surgery did not depend on age at surgery or duration of epilepsy. Surgical adverse events including complications may be underreported and must be assessed more thoroughly.
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Affiliation(s)
- Christian Hoppe
- Department of Epileptology, University Hospital Bonn, Bonn, Germany
| | - Kassandra Beeres
- Department of Epileptology, University Hospital Bonn, Bonn, Germany
| | | | - Robert Sassen
- Department of Epileptology, University Hospital Bonn, Bonn, Germany
- Department of Neuropediatrics, University Hospital Bonn, Bonn, Germany
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Shlobin NA, Wang A, Phillips HW, Yan H, Ibrahim GM, Elkaim LM, Wang S, Liu X, Cai L, Nguyen DK, Fallah A, Weil AG. Sensorimotor outcomes after resection for perirolandic drug-resistant epilepsy: a systematic review and individual patient data meta-analysis. J Neurosurg Pediatr 2022; 30:410-427. [PMID: 35932272 DOI: 10.3171/2022.6.peds22160] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/26/2022] [Accepted: 06/22/2022] [Indexed: 11/06/2022]
Abstract
OBJECTIVE The prevalence of long-term postoperative sensorimotor deficits in children undergoing perirolandic resective epilepsy surgery is unclear. The risk of developing these deficits must be weighed against the potential reduction in seizure frequency after surgery. In this study, the authors investigated the prevalence of sensorimotor deficits after resective surgery at ≥ 1 year postoperatively. METHODS A systematic review and individual patient data meta-analysis was conducted using PubMed, Embase, and Scopus databases. Subgroups of patients were identified and categorized according to their outcomes as follows: group A patients were denoted as seizure free with no postoperative sensorimotor deficits; group B patients experienced seizure recurrence with no deficit; group C patients were seizure free with deficits; and group D patients were not seizure free and with deficits. Rates of sensory deficits were examined in patients undergoing postcentral gyrus resection, and rates of motor deficits were aggregated in patients undergoing precentral gyrus resection. RESULTS Of 797 articles resulting from the database searches, 6 articles including 164 pediatric patients at a mean age of 7.7 ± 5.2 years with resection for drug-resistant perirolandic epilepsy were included in the study. Seizure freedom was observed in 118 (72.9%) patients at a mean follow-up of 3.4 ± 1.8 years. In total, 109 (66.5%) patients did not develop sensorimotor deficits at last follow-up, while 55 (33.5%) had permanent deficits. Ten (14.3%) of 70 patients with postcentral gyrus resection had permanent sensory deficits. Of the postcentral gyrus resection patients, 41 (58.6%) patients were included in group A, 19 (27.1%) in group B, 7 (10.0%) in group C, and 3 (4.3%) in group D. Forty (37.7%) of 106 patients with precentral resections had permanent motor deficits. Of the precentral gyrus resection patients, 50 (47.2%) patients were in group A, 16 (15.1%) in group B, 24 (22.6%) in group C, and 16 (15.1%) in group D. Patients without focal cortical dysplasia were more likely to have permanent motor deficits relative to those with focal cortical dysplasia in the precentral surgery cohort (p = 0.02). CONCLUSIONS In total, 58.6% of patients were seizure free without deficit, 27.1% were not seizure free and without deficit, 10.0% were seizure free but with deficit, and 4.3% were not seizure free and with deficit. Future studies with functional and quality-of-life data, particularly for patients who experience seizure recurrence with no deficits (as in group B in the present study) and those who are seizure free with deficits (as in group C) after treatment, are necessary to guide surgical decision-making.
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Affiliation(s)
- Nathan A Shlobin
- 1Department of Neurological Surgery, Feinberg School of Medicine, Northwestern University, Chicago, Illinois
| | - Andrew Wang
- 2Department of Neurosurgery, David Geffen School of Medicine, University of California, Los Angeles, California
| | - H Westley Phillips
- 2Department of Neurosurgery, David Geffen School of Medicine, University of California, Los Angeles, California
| | - Han Yan
- 3Division of Neurosurgery, Hospital for Sick Children, Toronto, Ontario
| | - George M Ibrahim
- 3Division of Neurosurgery, Hospital for Sick Children, Toronto, Ontario
| | - Lior M Elkaim
- 4Division of Neurology and Neurosurgery, McGill University, Montreal, Quebec, Canada
| | - Shuang Wang
- 5Pediatric Epilepsy Center, Peking University First Hospital, Beijing, China
| | - Xiaoyan Liu
- 5Pediatric Epilepsy Center, Peking University First Hospital, Beijing, China
| | - Lixin Cai
- 5Pediatric Epilepsy Center, Peking University First Hospital, Beijing, China
| | - Dang K Nguyen
- 6Division of Neurology, University of Montreal Hospital Centre (CHUM), Montreal
- 7CHUM Research Centre, Montreal
- 9Department of Neuroscience, University of Montreal; and
| | - Aria Fallah
- 2Department of Neurosurgery, David Geffen School of Medicine, University of California, Los Angeles, California
| | - Alexander G Weil
- 8Division of Neurosurgery, Sainte-Justine University Hospital and University of Montreal Hospital Centre (CHUM), Montreal
- 9Department of Neuroscience, University of Montreal; and
- 10Sainte-Justine Research Centre, University of Montreal, Quebec, Canada
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Bsat S, Najjar M, Nawfal O, Farhat S, Chanbour H, Beydoun A. Standardized reporting of complications of epilepsy surgery and invasive monitoring: A single-center retrospective study. Epilepsy Behav 2022; 134:108844. [PMID: 35853316 DOI: 10.1016/j.yebeh.2022.108844] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/16/2022] [Revised: 07/01/2022] [Accepted: 07/03/2022] [Indexed: 11/17/2022]
Abstract
OBJECTIVE Monitoring adverse effects related to epilepsy surgery is essential for quality control and for counseling patients prior to the procedure. The aim of this study was to analyze the rates of complications related to epilepsy surgery following invasive monitoring and to classify them according to the recently proposed protocol by the E-pilepsy consortium. METHODS This is a retrospective study of collected data extracted from our routinely updated epilepsy surgery database which consisted of 173 surgical procedures: 89 surgeries for insertion of subdural grids, strips, and/or depth electrodes, and 84 resective surgeries. According to the protocol, complications were defined as unexpected postoperative adverse events and were stratified into transient (lasting less than 6 months) and permanent deficits (lasting 6 months or longer). In addition, we reported patients with postoperative psychiatric disturbances and calculated the rates of transient and permanent postoperative sequelae which were defined as expected postoperative deficits deemed inherent to the surgical procedure. RESULTS Six potentially life-threatening complications requiring acceleration of the planned resective surgery occurred during invasive monitoring. Following resective surgery, 12 transient sequelae (8 motor deficits, three language deficits, and one transient dyscalculia) and 10 permanent sequelae (5 mild memory disturbances, four visual field cuts, and one contralateral dysesthesia) occurred. In addition, 7 patients experienced transient motor complications. Four permanent postoperative neurological complications (4.8%) occurred: motor deficits in three patients and a partial peripheral facial palsy in one. Finally, five patients developed de novo psychiatric disturbances (transient in four and permanent in one). CONCLUSIONS This is the first study to classify complications of epilepsy surgery according to the E-pilepsy consortium protocol. Our findings demonstrate that epilepsy surgery following invasive monitoring is safe and associated with low morbidity when performed in specialized centers. Monitoring these complications according to a unified definition and using a multidimensional protocol will allow for a direct comparison across epilepsy surgery centers, will provide the epileptologists and surgeons with objective percentages to share with their patients and will help in identifying risk factors and improving the safety of epilepsy surgery.
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Affiliation(s)
- Shadi Bsat
- Department of Neurosurgery, American University of Beirut Medical Center, Beirut, Lebanon.
| | - Marwan Najjar
- Department of Neurosurgery, American University of Beirut Medical Center, Beirut, Lebanon.
| | - Omar Nawfal
- Department of Neurology, American University of Beirut Medical Center, Beirut, Lebanon.
| | - Sahar Farhat
- Department of Neurology, American University of Beirut Medical Center, Beirut, Lebanon.
| | - Hani Chanbour
- Faculty of Medical Sciences, Lebanese University, Beirut, Lebanon.
| | - Ahmad Beydoun
- Department of Neurology, American University of Beirut Medical Center, Beirut, Lebanon.
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Jaafar N, Bhatt A, Eid A, Koubeissi MZ. The Temporal Lobe as a Symptomatogenic Zone in Medial Parietal Lobe Epilepsy. Front Neurol 2022; 13:804128. [PMID: 35370889 PMCID: PMC8965346 DOI: 10.3389/fneur.2022.804128] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/28/2021] [Accepted: 01/26/2022] [Indexed: 11/13/2022] Open
Abstract
Some surgical failures after temporal lobe epilepsy surgery may be due to the presence of an extratemporal epileptogenic zone. Of particular interest is the medial parietal lobe due to its robust connectivity with mesial temporal structures. Seizures in that area may be clinically silent before propagating to the symptomatogenic temporal lobe. In this paper, we present an overview of the anatomical connectivity, semiology, radiology, electroencephalography, neuropsychology, and outcomes in medial parietal lobe epilepsy. We also present two illustrative cases of seizures originating from the precuneus and the posterior cingulate cortex. We conclude that the medial parietal lobe should be strongly considered for sampling by intracranial electrodes in individuals with nonlesional temporal lobe epilepsy, especially if scrutinizing the presurgical data produces discordant findings.
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Affiliation(s)
- Nadim Jaafar
- Department of Neurology, George Washington University, Washington, DC, United States
| | - Amar Bhatt
- Rush Medical College, Rush University, Chicago, IL, United States
| | - Alexandra Eid
- Department of Neurology, George Washington University, Washington, DC, United States
| | - Mohamad Z. Koubeissi
- Department of Neurology, George Washington University, Washington, DC, United States
- *Correspondence: Mohamad Z. Koubeissi
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