1
|
Yan M, Sun T, Liu J, Chang Q. The efficacy and safety of ketamine in the treatment of super-refractory status epilepticus: a systematic review. J Neurol 2024:10.1007/s00415-024-12453-7. [PMID: 38782798 DOI: 10.1007/s00415-024-12453-7] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/01/2024] [Revised: 05/15/2024] [Accepted: 05/16/2024] [Indexed: 05/25/2024]
Abstract
BACKGROUND Ketamine, as an anesthetic, has been considered for terminating status epilepticus (SE); however, due to the urgency and severity of the condition, there are currently no randomized controlled trials internationally assessing the efficacy of ketamine for treating super-refractory status epilepticus. Similarly, there appears to be a lack of systematic reviews addressing this topic in the literature. Therefore, this systematic review aims to explore the effectiveness and safety of ketamine for terminating super-refractory status epilepticus. METHODS We conducted a systematic search on PubMed, EMBASE, and Web of Science databases. Manuscripts unrelated to the research on super-refractory status epilepticus were excluded, as were manuscripts published in non-English languages. The quality assessment and risk of bias were evaluated using the MINORS criteria. Data extraction was limited to qualitative synthesis due to the unsuitability of the data for meta-analysis. RESULTS Out of 782 studies retrieved from electronic databases, 11 met the inclusion criteria. Among them, 10 studies were retrospective, and 1 study was prospective. Patient data for inclusion were sourced from the case registries of the researchers' respective hospitals. Across all included studies, the administration of ketamine significantly reduced the duration of status epilepticus and demonstrated higher safety compared to patients not receiving ketamine treatment for super-refractory status epilepticus. Additionally, early administration of ketamine correlated with improved treatment outcomes. The risk of bias across all studies was deemed low. CONCLUSION This systematic review suggests that ketamine may be a feasible treatment option for super-refractory status epilepticus. However, given the critical nature of super-refractory status epilepticus, clinicians should prioritize its termination over evaluating the efficacy of specific medications, ensuring patient safety remains paramount. If feasible in real-world medical settings, future research should focus on designing randomized controlled trials to observe the specific efficacy and mechanisms of ketamine. Careful validation is necessary before considering ketamine as a first-line treatment for super-refractory status epilepticus.
Collapse
Affiliation(s)
- Mingyuan Yan
- Beijing University of Chinese Medicine, Beijing, China
| | - Tianye Sun
- Beijing University of Chinese Medicine, Beijing, China
| | - Jinmin Liu
- Dongzhimen Hospital, Beijing University of Chinese Medicine, Beijing, China
| | - Qing Chang
- Dongfang Hospital, Beijing University of Chinese Medicine, No.6 Fangxingyuan Fengtai District, Beijing, 100078, China.
| |
Collapse
|
2
|
García-Ruiz M, Rodríguez PM, Palliotti L, Lastras C, Romeral-Jiménez M, Morales IG, Rey CP, Rodrigo-Gisbert M, Campos-Fernández D, Santamarina E, Carbonell BP. Ketamine in the treatment of refractory and super-refractory status epilepticus: Experience from two centres. Seizure 2024; 117:13-19. [PMID: 38301485 DOI: 10.1016/j.seizure.2024.01.013] [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: 10/24/2023] [Revised: 01/19/2024] [Accepted: 01/20/2024] [Indexed: 02/03/2024] Open
Abstract
PURPOSE There is insufficient evidence on the management of refractory status epilepticus (RSE) and super-RSE (SRSE). Ketamine is a N-methyl-d-aspartate receptor antagonist in the treatment of these entities. Our objectives were to study the effectiveness and safety of ketamine in the treatment of adult patients with RSE and SRSE, to determine the factors that can influence the response to ketamine, and to explore its use in patients without mechanical ventilation. METHODS Adult patients who had received intravenous ketamine for the treatment of RSE or SRSE at Hospital Universitario Clínico San Carlos (Madrid, Spain) or Hospital Universitari Vall d'Hebron (Barcelona, Spain) from 2017 to 2023 were retrospectively analysed. RESULTS This study included 58 adult patients, mean (standard deviation) age 60.2 (15.7) years, of whom 41 (70.7 %) were male; 33 (56.9 %) patients responded to ketamine without recurrence, with a low rate of adverse effects (8.6 %). The presence of SRSE at the time of ketamine initiation (OR 0.287, p = 0.028) and the time elapsed between status epilepticus onset and ketamine administration (OR 0.991, p = 0.034) were associated with worse response to ketamine. Patients treated without mechanical ventilation had similar rates of response without recurrence (62.5% vs 56.9 %) and lower mortality (37.5% vs 53.5 %) compared to the overall group. CONCLUSION Ketamine is an effective drug with few adverse effects. Prompt administration should be considered in patients with RSE requiring anaesthesia, in patients with SRSE, and in patients with RSE who do not respond to standard antiseizure drugs and in whom mechanical ventilation is not advised.
Collapse
Affiliation(s)
- Manuel García-Ruiz
- Neurology Department, Hospital Universitario Clínico San Carlos, Calle del Profesor Martín Lagos, S/N, Madrid 28040, Spain
| | - Pablo Mayo Rodríguez
- Epilepsy Unit, Neurology Department, Hospital Universitario Clínico San Carlos, Calle del Profesor Martín Lagos, S/N, Madrid 28040, Spain
| | - Luca Palliotti
- Neurology Department, Hospital Universitario Clínico San Carlos, Calle del Profesor Martín Lagos, S/N, Madrid 28040, Spain
| | - Clara Lastras
- Epilepsy Unit, Neurology Department, Hospital Universitario Clínico San Carlos, Calle del Profesor Martín Lagos, S/N, Madrid 28040, Spain
| | - María Romeral-Jiménez
- Epilepsy Unit, Neurology Department, Hospital Universitario Clínico San Carlos, Calle del Profesor Martín Lagos, S/N, Madrid 28040, Spain
| | - Irene García Morales
- Epilepsy Unit, Neurology Department, Hospital Universitario Clínico San Carlos, Calle del Profesor Martín Lagos, S/N, Madrid 28040, Spain; Epilepsy Unit, Neurology Department, Hospital Ruber Internacional, Calle de La Masó, 38, Madrid 28034, Spain.
| | - Cándido Pardo Rey
- Neurology and Traumatology Unit, Intensive Care Department, Hospital Universitario Clínico San Carlos, Calle del Profesor Martín Lagos, S/N, Madrid 28040, Spain
| | - Marc Rodrigo-Gisbert
- Neurology Department, Hospital Universitari Vall d'Hebron, Passeig de la Vall d'Hebron, 119, Barcelona 08035, Spain
| | - Daniel Campos-Fernández
- Epilepsy Unit, Neurology Department, Hospital Universitari Vall d'Hebron, Passeig de la Vall d'Hebron, 119, Barcelona 08035, Spain
| | - Estevo Santamarina
- Epilepsy Unit, Neurology Department, Hospital Universitari Vall d'Hebron, Passeig de la Vall d'Hebron, 119, Barcelona 08035, Spain
| | - Beatriz Parejo Carbonell
- Epilepsy Unit, Neurology Department, Hospital Universitario Clínico San Carlos, Calle del Profesor Martín Lagos, S/N, Madrid 28040, Spain
| |
Collapse
|
3
|
Ip CT, de Bardeci M, Kronenberg G, Pinborg LH, Seifritz E, Brunovsky M, Olbrich S. EEG-vigilance regulation is associated with and predicts ketamine response in major depressive disorder. Transl Psychiatry 2024; 14:64. [PMID: 38272875 PMCID: PMC10810879 DOI: 10.1038/s41398-024-02761-x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/04/2023] [Revised: 01/08/2024] [Accepted: 01/10/2024] [Indexed: 01/27/2024] Open
Abstract
Ketamine offers promising new therapeutic options for difficult-to-treat depression. The efficacy of treatment response, including ketamine, has been intricately linked to EEG measures of vigilance. This research investigated the interplay between intravenous ketamine and alterations in brain arousal, quantified through EEG vigilance assessments in two distinct cohorts of depressed patients (original dataset: n = 24; testing dataset: n = 24). Clinical response was defined as a decrease from baseline of >33% on the Montgomery-Åsberg Depression Rating Scale (MADRS) 24 h after infusion. EEG recordings were obtained pre-, start-, end- and 24 h post- infusion, and the resting EEG was automatically scored using the Vigilance Algorithm Leipzig (VIGALL). Relative to placebo (sodium chloride 0.9%), ketamine increased the amount of low-vigilance stage B1 at end-infusion. This increase in B1 was positively related to serum concentrations of ketamine, but not to norketamine, and was independent of clinical response. In contrast, treatment responders showed a distinct EEG pattern characterized by a decrease in high-vigilance stage A1 and an increase in low-vigilance B2/3, regardless of whether placebo or ketamine had been given. Furthermore, pretreatment EEG differed between responders and non-responders with responders showing a higher percentage of stage A1 (53% vs. 21%). The logistic regression fitted on the percent of A1 stages was able to predict treatment outcomes in the testing dataset with an area under the ROC curve of 0.7. Ketamine affects EEG vigilance in a distinct pattern observed only in responders. Consequently, the percentage of pretreatment stage A1 shows significant potential as a predictive biomarker of treatment response.Clinical Trials Registration: https://www.clinicaltrialsregister.eu/ctr-search/trial/2013-000952-17/CZ Registration number: EudraCT Number: 2013-000952-17.
Collapse
Affiliation(s)
- Cheng-Teng Ip
- Center for Cognitive and Brain Sciences, University of Macau, Taipa, Macau SAR, China
- Neurobiology Research Unit, University Hospital Rigshospitalet, Copenhagen, Denmark
| | - Mateo de Bardeci
- Hospital for Psychiatry, Psychotherapy and Psychosomatic; University Zurich, Zurich, Switzerland
| | - Golo Kronenberg
- Hospital for Psychiatry, Psychotherapy and Psychosomatic; University Zurich, Zurich, Switzerland
| | - Lars Hageman Pinborg
- Neurobiology Research Unit, University Hospital Rigshospitalet, Copenhagen, Denmark
- Epilepsy Clinic, University Hospital Rigshospitalet, Copenhagen, Denmark
| | - Erich Seifritz
- Hospital for Psychiatry, Psychotherapy and Psychosomatic; University Zurich, Zurich, Switzerland
| | - Martin Brunovsky
- National Institute of Mental Health, Klecany, Czech Republic
- Charles University, Third Faculty of Medicine, Prague, Czech Republic
| | - Sebastian Olbrich
- Hospital for Psychiatry, Psychotherapy and Psychosomatic; University Zurich, Zurich, Switzerland.
| |
Collapse
|
4
|
Double antiglutamatergic treatment in patients with status epilepticus: A case series. Epilepsy Behav 2022; 137:108954. [PMID: 36375305 DOI: 10.1016/j.yebeh.2022.108954] [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: 06/12/2022] [Revised: 10/10/2022] [Accepted: 10/10/2022] [Indexed: 11/13/2022]
Abstract
INTRODUCTION Status epilepticus (SE) continues to be a challenging neurological emergency with high morbidity and mortality. During treatment, different regimens are practiced encompassing all known seizure termination mechanisms. To our knowledge, this is the first case series report describing EEG patterns and clinical outcomes in patients treated with ketamine and perampanel (PER) concomitantly. OBJECTIVE To assess clinical and electrographic outcomes in patients receiving dual antiglutamatergic therapy in SE. RESULTS Twenty-one out of twenty five patients were treated with ketamine, and four patients with ketamine were associated with PER. In the ketamine plus PER group, three out of four patients had convulsive SE, and one had non-convulsive status epilepticus (NCSE), whereas eight patients in the ketamine group had NCSE. The incidence of beta pattern appearance on EEG after starting patients on ketamine and PER was achieved in all four patients (100%) compared to (61.9%) in the other group. A burst suppression pattern was recorded in 75% of patients treated with ketamine and PER, in comparison to 28.5% of patients in patients treated with a different regimen. The time to resolution of SE was significantly shorter in the ketamine group (median 24 (24-64) h vs. 6 (05-144) h p > 0.05). Moreover, the average number of days on IV anesthetic was slightly lower in a patient treated with PER concomitantly. In terms of morbidity, the average increase in mRS was also lower in the ketamine and PER group, although it was not statistically significant. CONCLUSIONS Dual anti-glutamatergic therapy could provide a favorable approach to treating SE, which yet needs to be further investigated through larger randomized control studies.
Collapse
|