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Leung WC, Ho RWH, Leung AKL, Chu FHN, Lo CNR, Chan AA, Chan CYC, Chan DYH, Chui JHY, Li WTV, Yeung EHL, Teo KC, Lau GKK, Chang RSK. Risk of Seizure Aggravation after COVID-19 Vaccinations in Patients with Epilepsy. Vaccines (Basel) 2024; 12:593. [PMID: 38932322 PMCID: PMC11209536 DOI: 10.3390/vaccines12060593] [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: 04/28/2024] [Revised: 05/26/2024] [Accepted: 05/28/2024] [Indexed: 06/28/2024] Open
Abstract
Although Coronavirus disease 2019 (COVID-19) vaccinations are generally recommended for persons with epilepsy (PwE), a significant vaccination gap remains due to patient concerns over the risk of post-vaccination seizure aggravation (PVSA). In this single-centre, retrospective cohort study, we aimed to determine the early (7-day) and delayed (30-day) risk of PVSA, and to identify clinical predictors of PVSA among PwE. Adult epilepsy patients aged ≥18 years without a history of COVID-19 infection were recruited from a specialty epilepsy clinic in early 2022. Demographic, epilepsy characteristics, and vaccination data were extracted from a centralized electronic patient record. Seizure frequency before and after vaccination, vaccination-related adverse effects, and reasons for or against vaccination were obtained by a structured questionnaire. A total of 786 PwEs were included, of which 27.0% were drug-resistant. At the time of recruitment, 74.6% had at least 1 dose of the COVID-19 vaccine. Subjects with higher seizure frequency (p < 0.0005), on more anti-seizure medications (p = 0.004), or had drug-resistant epilepsy (p = 0.001) were less likely to be vaccinated. No significant increase in seizure frequency was observed in the early (7 days) and delayed phases (30 days) after vaccination in our cohort. On the contrary, there was an overall significant reduction in seizure frequency 30 days after vaccination (1.31 vs. 1.89, t = 3.436; p = 0.001). This difference was seen in both types of vaccine (BNT162b2 and CoronaVac) and drug-resistant epilepsy, but just missed significance for the second dose (1.13 vs. 1.87, t = 1.921; p = 0.055). Only 5.3% had PVSA after either dose of vaccine. Higher pre-vaccination seizure frequency of ≥1 per week (OR 3.01, 95% CI 1.05-8.62; p = 0.04) and drug-resistant status (OR 3.32, 95% CI 1.45-249 7.61; p = 0.005) were predictive of PVSA. Meanwhile, seizure freedom for 3 months before vaccination was independently associated with a lower risk of PVSA (OR 0.11, 95% CI 0.04-0.28; p < 0.0005). This may guide epilepsy treatment strategies to achieve better seizure control for at least 3 months prior to vaccination. As COVID-19 shifts to an endemic phase, this study provides important data demonstrating the overall safety of COVID-19 vaccinations among PwE. Identification of high-risk patients with subsequent individualized approaches in treatment and monitoring strategies may alleviate vaccination hesitancy among PwE.
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Affiliation(s)
- William C.Y. Leung
- Division of Neurology, Department of Medicine, Queen Mary Hospital, University of Hong Kong, Hong Kong SAR, China; (R.W.-H.H.); (A.K.-L.L.); (F.H.-N.C.); (C.N.R.L.); (K.C.T.); (G.K.-K.L.)
| | - Ryan Wui-Hang Ho
- Division of Neurology, Department of Medicine, Queen Mary Hospital, University of Hong Kong, Hong Kong SAR, China; (R.W.-H.H.); (A.K.-L.L.); (F.H.-N.C.); (C.N.R.L.); (K.C.T.); (G.K.-K.L.)
| | - Anthony Ka-Long Leung
- Division of Neurology, Department of Medicine, Queen Mary Hospital, University of Hong Kong, Hong Kong SAR, China; (R.W.-H.H.); (A.K.-L.L.); (F.H.-N.C.); (C.N.R.L.); (K.C.T.); (G.K.-K.L.)
| | - Florinda Hui-Ning Chu
- Division of Neurology, Department of Medicine, Queen Mary Hospital, University of Hong Kong, Hong Kong SAR, China; (R.W.-H.H.); (A.K.-L.L.); (F.H.-N.C.); (C.N.R.L.); (K.C.T.); (G.K.-K.L.)
| | - Cheuk Nam Rachel Lo
- Division of Neurology, Department of Medicine, Queen Mary Hospital, University of Hong Kong, Hong Kong SAR, China; (R.W.-H.H.); (A.K.-L.L.); (F.H.-N.C.); (C.N.R.L.); (K.C.T.); (G.K.-K.L.)
| | - Andrian A. Chan
- School of Clinical Medicine, Li Ka Shing Faculty of Medicine, University of Hong Kong, Hong Kong SAR, China; (A.A.C.); (C.Y.C.C.); (D.Y.H.C.); (J.H.Y.C.); (W.T.V.L.); (E.H.L.Y.)
| | - Cheuk Yan Claudia Chan
- School of Clinical Medicine, Li Ka Shing Faculty of Medicine, University of Hong Kong, Hong Kong SAR, China; (A.A.C.); (C.Y.C.C.); (D.Y.H.C.); (J.H.Y.C.); (W.T.V.L.); (E.H.L.Y.)
| | - Desmond Yin Hei Chan
- School of Clinical Medicine, Li Ka Shing Faculty of Medicine, University of Hong Kong, Hong Kong SAR, China; (A.A.C.); (C.Y.C.C.); (D.Y.H.C.); (J.H.Y.C.); (W.T.V.L.); (E.H.L.Y.)
| | - Jacklyn Hoi Ying Chui
- School of Clinical Medicine, Li Ka Shing Faculty of Medicine, University of Hong Kong, Hong Kong SAR, China; (A.A.C.); (C.Y.C.C.); (D.Y.H.C.); (J.H.Y.C.); (W.T.V.L.); (E.H.L.Y.)
| | - Wai Tak Victor Li
- School of Clinical Medicine, Li Ka Shing Faculty of Medicine, University of Hong Kong, Hong Kong SAR, China; (A.A.C.); (C.Y.C.C.); (D.Y.H.C.); (J.H.Y.C.); (W.T.V.L.); (E.H.L.Y.)
| | - Elton Hau Lam Yeung
- School of Clinical Medicine, Li Ka Shing Faculty of Medicine, University of Hong Kong, Hong Kong SAR, China; (A.A.C.); (C.Y.C.C.); (D.Y.H.C.); (J.H.Y.C.); (W.T.V.L.); (E.H.L.Y.)
| | - Kay Cheong Teo
- Division of Neurology, Department of Medicine, Queen Mary Hospital, University of Hong Kong, Hong Kong SAR, China; (R.W.-H.H.); (A.K.-L.L.); (F.H.-N.C.); (C.N.R.L.); (K.C.T.); (G.K.-K.L.)
- School of Clinical Medicine, Li Ka Shing Faculty of Medicine, University of Hong Kong, Hong Kong SAR, China; (A.A.C.); (C.Y.C.C.); (D.Y.H.C.); (J.H.Y.C.); (W.T.V.L.); (E.H.L.Y.)
| | - Gary Kui-Kai Lau
- Division of Neurology, Department of Medicine, Queen Mary Hospital, University of Hong Kong, Hong Kong SAR, China; (R.W.-H.H.); (A.K.-L.L.); (F.H.-N.C.); (C.N.R.L.); (K.C.T.); (G.K.-K.L.)
- School of Clinical Medicine, Li Ka Shing Faculty of Medicine, University of Hong Kong, Hong Kong SAR, China; (A.A.C.); (C.Y.C.C.); (D.Y.H.C.); (J.H.Y.C.); (W.T.V.L.); (E.H.L.Y.)
| | - Richard Shek-Kwan Chang
- Division of Neurology, Department of Medicine, Queen Mary Hospital, University of Hong Kong, Hong Kong SAR, China; (R.W.-H.H.); (A.K.-L.L.); (F.H.-N.C.); (C.N.R.L.); (K.C.T.); (G.K.-K.L.)
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Smith RJ, Hu DK, Shrey DW, Rajaraman R, Hussain SA, Lopour BA. Computational characteristics of interictal EEG as objective markers of epileptic spasms. Epilepsy Res 2021; 176:106704. [PMID: 34218209 DOI: 10.1016/j.eplepsyres.2021.106704] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/13/2021] [Revised: 05/26/2021] [Accepted: 06/23/2021] [Indexed: 10/21/2022]
Abstract
OBJECTIVE Favorable neurodevelopmental outcomes in epileptic spasms (ES) are tied to early diagnosis and prompt treatment, but uncertainty in the identification of the disease can delay this process. Therefore, we investigated five categories of computational electroencephalographic (EEG) measures as markers of ES. METHODS We measured 1) amplitude, 2) power spectra, 3) Shannon entropy and permutation entropy, 4) long-range temporal correlations, via detrended fluctuation analysis (DFA) and 5) functional connectivity using cross-correlation and phase lag index (PLI). EEG data were analyzed from ES patients (n = 40 patients) and healthy controls (n = 20 subjects), with multiple blinded measurements during wakefulness and sleep for each patient. RESULTS In ES patients, EEG amplitude was significantly higher in all electrodes when compared to controls. Shannon and permutation entropy were lower in ES patients than control subjects. The DFA intercept values in ES patients were significantly higher than control subjects, while DFA exponent values were not significantly different between the groups. EEG functional connectivity networks in ES patients were significantly stronger than controls when based on both cross-correlation and PLI. Significance for all statistical tests was p < 0.05, adjusted for multiple comparisons using the Benjamini-Hochberg procedure as appropriate. Finally, using logistic regression, a multi-attribute classifier was derived that accurately distinguished cases from controls (area under curve of 0.96). CONCLUSIONS Computational EEG features successfully distinguish ES patients from controls in a large, blinded study. SIGNIFICANCE These objective EEG markers, in combination with other clinical factors, may speed the diagnosis and treatment of the disease, thereby improving long-term outcomes.
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Affiliation(s)
- Rachel J Smith
- Department of Biomedical Engineering, University of California, Irvine, CA, United States
| | - Derek K Hu
- Department of Biomedical Engineering, University of California, Irvine, CA, United States
| | - Daniel W Shrey
- Division of Neurology, Children's Hospital of Orange County, Orange, CA, United States; Department of Pediatrics, University of California, Irvine, CA, United States
| | - Rajsekar Rajaraman
- Division of Pediatric Neurology, University of California, Los Angeles, CA, United States
| | - Shaun A Hussain
- Division of Pediatric Neurology, University of California, Los Angeles, CA, United States
| | - Beth A Lopour
- Department of Biomedical Engineering, University of California, Irvine, CA, United States.
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von Blomberg A, Kay L, Knake S, Fuest S, Zöllner JP, Reif PS, Herrmann E, Balaban Ü, Schubert-Bast S, Rosenow F, Strzelczyk A. Efficacy, Tolerability, and Safety of Concentrated Intranasal Midazolam Spray as Emergency Medication in Epilepsy Patients During Video-EEG Monitoring. CNS Drugs 2020; 34:545-553. [PMID: 32219682 PMCID: PMC7198639 DOI: 10.1007/s40263-020-00720-w] [Citation(s) in RCA: 21] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
Abstract
BACKGROUND An efficient, well tolerated, and safe emergency treatment with a rapid onset of action is needed to prevent seizure clusters and to terminate prolonged seizures and status epilepticus. OBJECTIVES This study aimed to examine the efficacy, tolerability, and safety of intranasal midazolam (in-MDZ) spray in clinical practice. METHODS In this retrospective, multicenter observational study, we evaluated all patients with peri-ictal application of in-MDZ during video-EEG monitoring at the epilepsy centers in Frankfurt and Marburg between 2 014 and 2017. For every patient, we analyzed the recurrence of any seizure or generalized tonic-clonic seizures after index seizures with and without in-MDZ administration. Treatment-emergent adverse events (TEAEs) were also evaluated. RESULTS In-MDZ was used in 243 patients with epilepsy (mean age 35.5 years; range 5-76 years; 46.5% female) for treatment of 459 seizures. A median dose of in-MDZ 5 mg (i.e., two puffs; range 2.5-15 mg) was administered within a median time from EEG seizure onset until in-MDZ application of 1.18 min [interquartile range (IQR) 1.27], while median time from clinical seizure onset until in-MDZ administration was 1.08 min (IQR 1.19). In-MDZ was given within 1 min after EEG seizure onset in 171 seizures. An intraindividual comparison of seizures with and without application of in-MDZ was feasible in 171 patients, demonstrating that in-MDZ reduced the occurrence of any (Cox proportional-hazard model p < 0.001) and generalized tonic-clonic seizure (Cox proportional-hazard model p = 0.0167) over a period of 24 h. The seizure-free timespan was doubled from a median of 5.0 h in controls to a median of 10.67 h after in-MDZ administration. We additionally clustered in-MDZ administrations for the 119 patients who received in-MDZ more than once, comparing them with the index cases without in-MDZ. Even when considering subsequent seizures with in-MDZ administration, a patient receiving in-MDZ is still half as likely to incur another seizure in the upcoming 24 h as compared with when the same patient does not receive in-MDZ (hazard ratio 0.50; 95% CI 0.42-0.60; p < 0.01). In-MDZ was well tolerated without major adverse events. The most common side effects were irritation of the nasal mucosa [37 cases (8.1%)], prolonged sedation [26 cases (5.7%)], and nausea and vomiting [12 cases (2.6%)]. A decline in oxygen saturation was measured after 78 seizures (17%). CONCLUSION We conclude that in-MDZ is a safe and efficient treatment option to prevent short-term recurrence of seizures. In-MDZ can be administered very quickly by trained staff within 1-2 min after seizure onset. No major cardiocirculatory or respiratory adverse events were observed.
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Affiliation(s)
- Anemone von Blomberg
- Epilepsy Center Frankfurt Rhine-Main, Center of Neurology and Neurosurgery, Goethe-University Frankfurt, University Hospital Frankfurt, Schleusenweg 2-16, Haus 95, 60528, Frankfurt am Main, Germany
- LOEWE Center for Personalized Translational Epilepsy Research (CePTER), Goethe-University Frankfurt, Frankfurt am Main, Germany
| | - Lara Kay
- Epilepsy Center Frankfurt Rhine-Main, Center of Neurology and Neurosurgery, Goethe-University Frankfurt, University Hospital Frankfurt, Schleusenweg 2-16, Haus 95, 60528, Frankfurt am Main, Germany
- LOEWE Center for Personalized Translational Epilepsy Research (CePTER), Goethe-University Frankfurt, Frankfurt am Main, Germany
| | - Susanne Knake
- LOEWE Center for Personalized Translational Epilepsy Research (CePTER), Goethe-University Frankfurt, Frankfurt am Main, Germany
- Epilepsy Center Hessen and Department of Neurology, Philipps-University Marburg, Marburg (Lahn), Germany
| | - Sven Fuest
- Epilepsy Center Hessen and Department of Neurology, Philipps-University Marburg, Marburg (Lahn), Germany
| | - Johann Philipp Zöllner
- Epilepsy Center Frankfurt Rhine-Main, Center of Neurology and Neurosurgery, Goethe-University Frankfurt, University Hospital Frankfurt, Schleusenweg 2-16, Haus 95, 60528, Frankfurt am Main, Germany
- LOEWE Center for Personalized Translational Epilepsy Research (CePTER), Goethe-University Frankfurt, Frankfurt am Main, Germany
| | - Philipp S Reif
- Epilepsy Center Frankfurt Rhine-Main, Center of Neurology and Neurosurgery, Goethe-University Frankfurt, University Hospital Frankfurt, Schleusenweg 2-16, Haus 95, 60528, Frankfurt am Main, Germany
- LOEWE Center for Personalized Translational Epilepsy Research (CePTER), Goethe-University Frankfurt, Frankfurt am Main, Germany
| | - Eva Herrmann
- Institute for Biostatistics and Mathematical Modeling, Goethe-University Frankfurt, Frankfurt am Main, Germany
| | - Ümniye Balaban
- Institute for Biostatistics and Mathematical Modeling, Goethe-University Frankfurt, Frankfurt am Main, Germany
| | - Susanne Schubert-Bast
- Epilepsy Center Frankfurt Rhine-Main, Center of Neurology and Neurosurgery, Goethe-University Frankfurt, University Hospital Frankfurt, Schleusenweg 2-16, Haus 95, 60528, Frankfurt am Main, Germany
- LOEWE Center for Personalized Translational Epilepsy Research (CePTER), Goethe-University Frankfurt, Frankfurt am Main, Germany
- Department of Neuropediatrics, Goethe-University Frankfurt, Frankfurt am Main, Germany
| | - Felix Rosenow
- Epilepsy Center Frankfurt Rhine-Main, Center of Neurology and Neurosurgery, Goethe-University Frankfurt, University Hospital Frankfurt, Schleusenweg 2-16, Haus 95, 60528, Frankfurt am Main, Germany
- LOEWE Center for Personalized Translational Epilepsy Research (CePTER), Goethe-University Frankfurt, Frankfurt am Main, Germany
| | - Adam Strzelczyk
- Epilepsy Center Frankfurt Rhine-Main, Center of Neurology and Neurosurgery, Goethe-University Frankfurt, University Hospital Frankfurt, Schleusenweg 2-16, Haus 95, 60528, Frankfurt am Main, Germany.
- LOEWE Center for Personalized Translational Epilepsy Research (CePTER), Goethe-University Frankfurt, Frankfurt am Main, Germany.
- Epilepsy Center Hessen and Department of Neurology, Philipps-University Marburg, Marburg (Lahn), Germany.
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