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Numis AL, Glass HC, Comstock BA, Gonzalez F, Maitre NL, Massey SL, Mayock DE, Mietzsch U, Natarajan N, Sokol GM, Bonifacio S, Van Meurs K, Thomas C, Ahmad K, Heagerty P, Juul SE, Wu YW, Wusthoff CJ. Relationship of Neonatal Seizure Burden Before Treatment and Response to Initial Antiseizure Medication. J Pediatr 2024; 268:113957. [PMID: 38360261 DOI: 10.1016/j.jpeds.2024.113957] [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: 08/18/2023] [Revised: 02/07/2024] [Accepted: 02/08/2024] [Indexed: 02/17/2024]
Abstract
OBJECTIVE To assess among a cohort of neonates with hypoxic-ischemic encephalopathy (HIE) the association of pretreatment maximal hourly seizure burden and total seizure duration with successful response to initial antiseizure medication (ASM). STUDY DESIGN This was a retrospective review of data collected from infants enrolled in the HEAL Trial (NCT02811263) between January 25, 2017, and October 9, 2019. We evaluated a cohort of neonates born at ≥36 weeks of gestation with moderate-to-severe HIE who underwent continuous electroencephalogram monitoring and had acute symptomatic seizures. Poisson regression analyzed associations between (1) pretreatment maximal hourly seizure burden, (2) pretreatment total seizure duration, (3) time from first seizure to initial ASM, and (4) successful response to initial ASM. RESULTS Among 39 neonates meeting inclusion criteria, greater pretreatment maximal hourly seizure burden was associated with lower chance of successful response to initial ASM (adjusted relative risk for each 5-minute increase in seizure burden 0.83, 95% CI 0.69-0.99). There was no association between pretreatment total seizure duration and chance of successful response. Shorter time-to-treatment was paradoxically associated with lower chance of successful response to treatment, although this difference was small in magnitude (relative risk 1.007, 95% CI 1.003-1.010). CONCLUSIONS Maximal seizure burden may be more important than other, more commonly used measures in predicting response to acute seizure treatments.
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Affiliation(s)
- Adam L Numis
- Department of Neurology and Weill Institute for Neuroscience, University of California San Francisco, San Francisco, CA; Department of Pediatrics UCSF Benioff Children's Hospital, University of California San Francisco, San Francisco, CA.
| | - Hannah C Glass
- Department of Neurology and Weill Institute for Neuroscience, University of California San Francisco, San Francisco, CA; Department of Pediatrics UCSF Benioff Children's Hospital, University of California San Francisco, San Francisco, CA; Department of Epidemiology & Biostatistics, University of California San Francisco, San Francisco, CA
| | - Bryan A Comstock
- Department of Biostatistics, University of Washington, Seattle, WA
| | - Fernando Gonzalez
- Department of Pediatrics UCSF Benioff Children's Hospital, University of California San Francisco, San Francisco, CA
| | - Nathalie L Maitre
- Department of Pediatrics, Emory University School of Medicine and Children's Healthcare of Atlanta, Atlanta, GA
| | - Shavonne L Massey
- Departments of Neurology and Pediatrics, Children's Hospital of Philadelphia and Perelman School of Medicine, University of Pennsylvania, Philadelphia, PA
| | - Dennis E Mayock
- Division of Neonatology, Department of Pediatrics, University of Washington School of Medicine, Seattle, WA
| | - Ulrike Mietzsch
- Division of Neonatology, Department of Pediatrics, University of Washington School of Medicine, Seattle, WA; Department of Pediatrics, Indiana University School of Medicine, Indianapolis, IN
| | - Niranjana Natarajan
- Division of Pediatric Neurology, Department of Neurology, University of Washington School of Medicine, Seattle, WA
| | - Gregory M Sokol
- Department of Pediatrics, Indiana University School of Medicine, Indianapolis, IN
| | - Sonia Bonifacio
- Division of Neonatal and Developmental Medicine, Department of Pediatrics, Stanford University School of Medicine, Stanford, CA
| | - Krisa Van Meurs
- Division of Neonatal and Developmental Medicine, Department of Pediatrics, Stanford University School of Medicine, Stanford, CA
| | - Cameron Thomas
- Department of Pediatrics, University of Cincinnati College of Medicine, Cincinnati, OH; Division of Neurology, Cincinnati Children's Hospital Medical Center, Cincinnati, OH
| | - Kaashif Ahmad
- Pediatrix Medical Group of San Antonio, Children's Hospital of San Antonio, San Antonio, TX
| | - Patrick Heagerty
- Department of Biostatistics, University of Washington, Seattle, WA
| | - Sandra E Juul
- Division of Neonatology, Department of Pediatrics, University of Washington School of Medicine, Seattle, WA
| | - Yvonne W Wu
- Department of Neurology and Weill Institute for Neuroscience, University of California San Francisco, San Francisco, CA; Department of Pediatrics UCSF Benioff Children's Hospital, University of California San Francisco, San Francisco, CA
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Vyas P, Chaturvedi I, Hwang Y, Scafidi J, Kadam SD, Stafstrom CE. High Doses of ANA12 Improve Phenobarbital Efficacy in a Model of Neonatal Post-Ischemic Seizures. Int J Mol Sci 2024; 25:1447. [PMID: 38338726 PMCID: PMC10855037 DOI: 10.3390/ijms25031447] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/29/2023] [Revised: 12/20/2023] [Accepted: 12/21/2023] [Indexed: 02/12/2024] Open
Abstract
Phenobarbital (PB) remains the first-line medication for neonatal seizures. Yet, seizures in many newborns, particularly those associated with perinatal ischemia, are resistant to PB. Previous animal studies have shown that in postnatal day P7 mice pups with ischemic stroke induced by unilateral carotid ligation, the tyrosine receptor kinase B (TrkB) antagonist ANA12 (N-[2-[[(hexahydro-2-oxo-1H-azepin-3-yl)amino]carbonyl]phenyl]-benzo[b]thiophene-2-carboxamide, 5 mg/kg) improved the efficacy of PB in reducing seizure occurrence. To meet optimal standards of effectiveness, a wider range of ANA12 doses must be tested. Here, using the unilateral carotid ligation model, we tested the effectiveness of higher doses of ANA12 (10 and 20 mg/kg) on the ability of PB to reduce seizure burden, ameliorate cell death (assessed by Fluoro-Jade staining), and affect neurodevelopment (righting reflex, negative geotaxis test, open field test). We found that a single dose of ANA12 (10 or 20 mg/kg) given 1 h after unilateral carotid ligation in P7 pups reduced seizure burden and neocortical and striatal neuron death without impairing developmental reflexes. In conclusion, ANA12 at a range of doses (10-20 mg/kg) enhanced PB effectiveness for the treatment of perinatal ischemia-related seizures, suggesting that this agent might be a clinically safe and effective adjunctive agent for the treatment of pharmacoresistant neonatal seizures.
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Affiliation(s)
- Preeti Vyas
- Department of Neurology, Johns Hopkins University School of Medicine, Baltimore, MD 21205, USA; (P.V.); (I.C.); (Y.H.); (J.S.)
| | - Ira Chaturvedi
- Department of Neurology, Johns Hopkins University School of Medicine, Baltimore, MD 21205, USA; (P.V.); (I.C.); (Y.H.); (J.S.)
| | - Yun Hwang
- Department of Neurology, Johns Hopkins University School of Medicine, Baltimore, MD 21205, USA; (P.V.); (I.C.); (Y.H.); (J.S.)
| | - Joseph Scafidi
- Department of Neurology, Johns Hopkins University School of Medicine, Baltimore, MD 21205, USA; (P.V.); (I.C.); (Y.H.); (J.S.)
- Department of Neurology and Developmental Medicine, Kennedy Krieger Institute, Baltimore, MD 21205, USA
| | - Shilpa D. Kadam
- Department of Neurology, Johns Hopkins University School of Medicine, Baltimore, MD 21205, USA; (P.V.); (I.C.); (Y.H.); (J.S.)
- Department of Neurology and Developmental Medicine, Kennedy Krieger Institute, Baltimore, MD 21205, USA
- Department of Neuroscience, Johns Hopkins University School of Medicine, Baltimore, MD 21205, USA
| | - Carl E. Stafstrom
- Department of Neurology, Johns Hopkins University School of Medicine, Baltimore, MD 21205, USA; (P.V.); (I.C.); (Y.H.); (J.S.)
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Li Y, Scheffler A, Barkovich AJ, Chang T, Chu CJ, Massey SL, Abend NS, Lemmon ME, Thomas C, Numis A, Franck LS, Rogers E, Callen A, McCulloch CE, Shellhaas RA, Glass HC. Neonatal brain MRI and short-term outcomes after acute provoked seizures. J Perinatol 2023; 43:1392-1397. [PMID: 37454174 PMCID: PMC10615741 DOI: 10.1038/s41372-023-01723-3] [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: 04/05/2023] [Revised: 05/31/2023] [Accepted: 07/05/2023] [Indexed: 07/18/2023]
Abstract
OBJECTIVE We investigated how diagnosis and injury location on neonatal brain MRI following onset of acute provoked seizures was associated with short term outcome. STUDY DESIGN A multicenter cohort of neonates with acute provoked seizures enrolled in the Neonatal Seizure Registry. MRIs were centrally evaluated by a neuroradiologist for location of injury and radiologic diagnosis. Clinical outcomes were determined by chart review. Multivariate logistic regression was used to examine the association between MRI findings and outcomes. RESULTS Among 236 newborns with MRI at median age 4 days (IQR 3-8), 91% had abnormal MRI. Radiologic diagnoses of intracranial hemorrhage (OR 3.2 [1.6-6.5], p < 0.001) and hypoxic-ischemic encephalopathy (OR 2.7 [1.4-5.4], p < 0.003) were associated with high seizure burden. Radiologic signs of intracranial infection were associated with abnormal neurologic examination at discharge (OR 3.9 [1.3-11.6], p < 0.01). CONCLUSION Findings on initial MRI can help with expectant counseling on short-term outcomes following acute provoked neonatal seizures.
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Affiliation(s)
- Yi Li
- Department of Radiology and Biomedical Imaging, University of California San Francisco, San Francisco, CA, USA.
| | - Aaron Scheffler
- Department of Epidemiology and Biostatistics, University of California San Francisco, San Francisco, CA, USA
| | - Anthony James Barkovich
- Department of Radiology and Biomedical Imaging, University of California San Francisco, San Francisco, CA, USA
| | - Taeun Chang
- Department of Neurology, Children's National Hospital, George Washington University School of Medicine, Washington, DC, USA
| | - Catherine J Chu
- Department of Neurology, Massachusetts General Hospital, Harvard Medical School, Boston, MA, USA
| | - Shavonne L Massey
- Departments of Neurology and Pediatrics, Children's Hospital of Philadelphia and Perelman School of Medicine at the University of Pennsylvania, Philadelphia, PA, USA
| | - Nicholas S Abend
- Departments of Neurology and Pediatrics, Children's Hospital of Philadelphia and Perelman School of Medicine at the University of Pennsylvania, Philadelphia, PA, USA
- Departments of Anesthesia & Critical Care Medicine, Children's Hospital of Philadelphia and Perelman School of Medicine at the University of Pennsylvania, Philadelphia, PA, USA
| | - Monica E Lemmon
- Department of Pediatrics and Population Health Sciences, Duke University School of Medicine, Durham, NC, USA
| | - Cameron Thomas
- Department of Pediatrics, University of Cincinnati and Division of Neurology, Cincinnati Children's Hospital Medical Center, Cincinnati, OH, USA
| | - Adam Numis
- Department of Neurology and Weill Institute for Neuroscience, University of California San Francisco, San Francisco, CA, USA
| | - Linda S Franck
- Department of Family Health Care Nursing, UCSF Benioff Children's Hospital, University of California San Francisco, San Francisco, CA, USA
| | - Elizabeth Rogers
- Department of Pediatrics, UCSF Benioff Children's Hospital, University of California San Francisco, San Francisco, CA, USA
| | - Andrew Callen
- Department of Radiology, University of Colorado Denver School of Medicine, Denver, CO, USA
| | - Charles E McCulloch
- Department of Epidemiology and Biostatistics, University of California San Francisco, San Francisco, CA, USA
| | - Renée A Shellhaas
- Division of Pediatric Neurology, Department of Neurology, Washington University in St. Louis, St. Louis, MO, USA
| | - Hannah C Glass
- Department of Epidemiology and Biostatistics, University of California San Francisco, San Francisco, CA, USA
- Department of Neurology and Weill Institute for Neuroscience, University of California San Francisco, San Francisco, CA, USA
- Department of Pediatrics, UCSF Benioff Children's Hospital, University of California San Francisco, San Francisco, CA, USA
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Rao S, Farhat A, Rakshasbhuvankar A, Athikarisamy S, Ghosh S, Nagarajan L. Effects of bumetanide on neonatal seizures: A systematic review of animal and human studies. Seizure 2023; 111:206-214. [PMID: 37690372 DOI: 10.1016/j.seizure.2023.09.007] [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: 06/22/2023] [Revised: 09/01/2023] [Accepted: 09/06/2023] [Indexed: 09/12/2023] Open
Abstract
BACKGROUND Bumetanide, an inhibitor of the sodium-potassium-chloride cotransporter-1, has been suggested as an adjunct to phenobarbital for treating neonatal seizures. METHODS A systematic review of animal and human studies was conducted to evaluate the efficacy and safety of bumetanide for neonatal seizures. PubMed, Embase, CINAHL and Cochrane databases were searched in March 2023. RESULTS 26 animal (rat or mice) studies describing 38 experiments (28 in-vivo and ten in-vitro) and two human studies (one RCT and one open-label dose-finding) were included. The study designs, methods to induce seizures, bumetanide dose, and outcome measures were heterogeneous, with only 4/38 experiments being in animal hypoxia/ischaemia models. Among 38 animal experiments, bumetanide was reported to have antiseizure effects in 21, pro-seizure in six and ineffective in 11. The two human studies (n = 57) did not show the benefits of bumetanide as an add-on agent to phenobarbital in their primary analyses, but one study reported benefit on post-hoc analysis. Overall, hearing impairment was detected in 5/37 surviving infants in the bumetanide group vs. 0/13 in controls. Four of the five infants with hearing impairment had received aminoglycosides concurrently. Other adverse effects reported were diuresis, mild-to-moderate dehydration, hypotension, and electrolyte disturbances. The studies did not report on long-term neurodevelopment. The certainty of the evidence was very low. CONCLUSION Animal data suggest that bumetanide has inconsistent effects as an antiseizure medication in neonates. Data from human studies are scarce and raise some concerns regarding ototoxicity when given with aminoglycosides. Well conducted studies in animal models of hypoxic-ischaemic encephalopathy are urgently needed. Future RCTs, if conducted in human neonates, should have an adequate sample size, assess neurodevelopment, minimize using aminoglycosides, be transparent about the potential ototoxicity in the parent information sheet, conduct early hearing tests and have trial-stopping rules that include hearing impairment as an outcome.
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Affiliation(s)
- Shripada Rao
- Neonatal Intensive Care Unit, King Edward Memorial and Perth Children's Hospitals, Perth, Australia; Paediatric Division, Medical School, University of Western Australia, Perth, Australia.
| | - Asifa Farhat
- General Paediatrics, Perth Children's Hospital, Perth, Australia
| | - Abhijeet Rakshasbhuvankar
- Neonatal Intensive Care Unit, King Edward Memorial and Perth Children's Hospitals, Perth, Australia; Paediatric Division, Medical School, University of Western Australia, Perth, Australia
| | - Sam Athikarisamy
- Neonatal Intensive Care Unit, King Edward Memorial and Perth Children's Hospitals, Perth, Australia; Paediatric Division, Medical School, University of Western Australia, Perth, Australia
| | - Soumya Ghosh
- Children's Neuroscience Service, Department of Neurology, Perth Children's Hospital, Perth, Australia; Centre for Neuromuscular and Neurological Disorders, Perron Institute, University of Western Australia, Perth, Australia
| | - Lakshmi Nagarajan
- Paediatric Division, Medical School, University of Western Australia, Perth, Australia; Children's Neuroscience Service, Department of Neurology, Perth Children's Hospital, Perth, Australia
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Anwar T. Discontinuing Antiseizure Medications After Acute Symptomatic Neonatal Seizures: The Great Trepidation. Neurol Clin Pract 2023; 13:e200140. [PMID: 37064582 PMCID: PMC10101705 DOI: 10.1212/cpj.0000000000200140] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/23/2022] [Accepted: 12/06/2022] [Indexed: 03/05/2023]
Affiliation(s)
- Tayyba Anwar
- Department of Neurology and Pediatrics (TA), The George Washington University School of Medicine and Health Sciences; and Department of Neurology (TA), Children's National Hospital, Washington, DC
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Levetiracetam versus Phenobarbital for Neonatal Seizures: A Retrospective Cohort Study. Pediatr Neurol 2023; 138:62-70. [PMID: 36401982 DOI: 10.1016/j.pediatrneurol.2022.10.004] [Citation(s) in RCA: 4] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/13/2022] [Revised: 08/22/2022] [Accepted: 10/15/2022] [Indexed: 11/06/2022]
Abstract
BACKGROUND Although phenobarbital (PB) is commonly used as a first-line antiseizure medication (ASM) for neonatal seizures, in 2015 we chose to replace it with levetiracetam (LEV), a third-generation ASM. Here, we compared the safety and efficacy of LEV and PB as first-line ASM, considering the years before and after modifying our treatment protocol. METHODS We conducted a retrospective cohort study of 108 neonates with electroencephalography (EEG)-confirmed seizures treated with first-line LEV or PB in 2012 to 2020. RESULTS First-line ASM was LEV in 33 (31%) and PB in 75 (69%) neonates. The etiology included acute symptomatic seizures in 69% of cases (30% hypoxic-ischemic encephalopathy, 32% structural vascular, 6% infectious, otherwise metabolic) and neonatal epilepsy in 22% (5% structural due to brain malformation, 17% genetic). Forty-two of 108 (39%) neonates reached seizure freedom following first-line therapy. Treatment response did not vary by first-line ASM among all neonates, those with acute symptomatic seizures, or those with neonatal-onset epilepsy. Treatment response was lowest for neonates with a higher seizure frequency, particularly for those with status epilepticus versus rare seizures (P < 0.001), irrespective of gestational age, etiology, or EEG findings. Adverse events were noted in 22 neonates treated with PB and in only one treated with LEV (P < 0.001). CONCLUSIONS Our study suggests a potential noninferiority and a more acceptable safety profile for LEV, which may thus be a reasonable option as first-line ASM for neonatal seizures in place of PB. Treatment should be initiated as early as possible since higher seizure frequencies predispose to less favorable responses.
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Li Y, Jin M, Yin X, Zhou B, Ni H. Effects of leptin treatment immediately after neonatal seizures on serum clusterin and VEGF levels and brain oxidative stress-related proteins and neurobehavioral phenotypes. Epilepsy Behav 2023; 138:109016. [PMID: 36473302 DOI: 10.1016/j.yebeh.2022.109016] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/17/2022] [Revised: 11/15/2022] [Accepted: 11/21/2022] [Indexed: 12/12/2022]
Abstract
The developing infant brain has a different response mechanism and repair potential for injury than the adult brain. There is an urgent need for new anticonvulsants to effectively control neonatal seizures while minimizing the drug's toxic damage to the developing brain. Leptin protects neuronal plasma membrane integrity, while it has clinical advantages in terms of anticonvulsant properties as well. This study aimed to evaluate the effect of immediate leptin treatment on the serum concentration of clusterin and vascular endothelial growth factor (VEGF), neuronal plasma membrane integrity-related proteins, and the neurobehavioral phenotypes following neonatal seizures. Leptin was injected i.p at a dose of 4 mg/kg 1 hour after daily 30 minutes prolonged seizures for consecutive 10 days. The serum biomarkers (clusterin and VEGF), and brain protein expression of ATF-4/GRP78/autophagy axis were measured by enzyme-linked immunosorbent assay and western blot in the acute phase (24 hours after the last seizures), respectively. Behavioral and histopathological phenotypes and seizure threshold were conducted from P23 to P34, respectively. There were rapid elevation of serum VEGF and clusterin as well as upregulated protein expression of ATF-4, GRP78, Beclin-1, and LC3 in the cerebral cortex and hippocampus following a neonatal seizure, which was restored by immediate treatment with leptin after seizures. In addition, leptin improved seizure-induced impaired neuropsychological, and cognitive functioning. Furthermore, leptin succeeded in ameliorating markers of neuronal excitability, including seizure threshold and hippocampal mossy fiber sprouting. In conclusion, this study verified that immediate treatment with leptin after neonatal seizures restored both rapid elevation of serum clusterin as well as upregulated protein expression of ATF-4/GRP78/autophagy axis in the cerebral cortex and hippocampus, which contributes to the recovery of neurological function.
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Affiliation(s)
- Yachao Li
- Division of Brain Science, Institute of Pediatric Research, Children's Hospital of Soochow University, Suzhou, China; Department of Pediatrics, The First People's Hospital, Pingdingshan, Henan Province, China
| | - Meifang Jin
- Division of Brain Science, Institute of Pediatric Research, Children's Hospital of Soochow University, Suzhou, China
| | - Xiaoping Yin
- Department of Pediatrics, Taixing People's Hospital, Taizhou, Jiangsu Province, China
| | - Baojian Zhou
- Department of Pediatrics, Taixing People's Hospital, Taizhou, Jiangsu Province, China
| | - Hong Ni
- Division of Brain Science, Institute of Pediatric Research, Children's Hospital of Soochow University, Suzhou, China.
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Seizure Burden, EEG, and Outcome in Neonates With Acute Intracranial Infections: A Prospective Multicenter Cohort Study. Pediatr Neurol 2022; 137:54-61. [PMID: 36270133 DOI: 10.1016/j.pediatrneurol.2022.09.001] [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: 06/02/2022] [Revised: 08/11/2022] [Accepted: 09/09/2022] [Indexed: 11/21/2022]
Abstract
BACKGROUND Limited data exist regarding seizure burden, electroencephalogram (EEG) background, and associated outcomes in neonates with acute intracranial infections. METHODS This secondary analysis was from a prospective, multicenter study of neonates enrolled in the Neonatal Seizure Registry with seizures due to intracranial infection. Sites used continuous EEG monitoring per American Clinical Neurophysiology Society guidelines. High seizure burden was defined a priori as seven or more EEG-confirmed seizures. EEG background was categorized using standardized terminology. Primary outcome was neurodevelopment at 24-months corrected age using Warner Initial Developmental Evaluation of Adaptive and Functional Skills (WIDEA-FS). Secondary outcomes were postneonatal epilepsy and motor disability. RESULTS Twenty-seven of 303 neonates (8.9%) had seizures due to intracranial infection, including 16 (59.3%) bacterial, 5 (18.5%) viral, and 6 (22.2%) unknown. Twenty-three neonates (85%) had at least one subclinical seizure. Among 23 children with 24-month follow-up, the WIDEA-FS score was, on average, 23 points lower in children with high compared with low seizure burden (95% confidence interval, [-48.4, 2.1]; P = 0.07). After adjusting for gestational age, infection etiology, and presence of an additional potential acute seizure etiology, the effect size remained unchanged (β = -23.8, P = 0.09). EEG background was not significantly associated with WIDEA-FS score. All children with postneonatal epilepsy (n = 4) and motor disability (n = 5) had high seizure burden, although associations were not significant. CONCLUSION High seizure burden may be associated with worse neurodevelopment in neonates with intracranial infection and seizures. EEG monitoring can provide useful management and prognostic information in this population.
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Hashish M, Bassiouny MR. Neonatal seizures: stepping outside the comfort zone. Clin Exp Pediatr 2022; 65:521-528. [PMID: 35381172 PMCID: PMC9650361 DOI: 10.3345/cep.2022.00115] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/17/2022] [Accepted: 03/22/2022] [Indexed: 11/27/2022] Open
Abstract
Seizures are the most common neurological disorders in newborns. Managing neonatal seizures is challenging, especially for neurologists who are not neonatal specialists. Acute brain injury during ischemic insult is a key component of seizure occurrence, while genetic and metabolic disorders play less prevalent but more severe roles. The diagnosis of neonatal seizure is ambiguous, as the subjective differentiation between seizure and nonepileptic events is difficult; therefore, electrographic recording is the gold standard for diagnosis. The detection of electrographic seizures by neonatologists is currently facilitated by amplitude-integrated electroencephalography availability in many neonatal intensive care units. Although it is less sensitive than conventional electroencephalography, it is better to record all risky neonates to filter the abnormal events as early as possible to enable the initiation of dedicated therapy at proper dose and time and facilitate the initial response to antiepileptic drugs. This, in turn, helps maintain the balance between unnecessary drug use and their neurotoxic effects. Moreover, the early treatment of electrographic seizures plays a vital role in the suppression of subsequent abnormal brain electricity (status epilepticus) and shortening the hospital stay. An explicit understanding of seizure etiology and pathophysiology should direct attention to the proper prescription of short- and long-term antiepileptic medications to solve the challenging issue of whether neonatal seizures progress to postneonatal epilepsy and long-term cognitive deficits. This review addresses recent updates in different aspects of neonatal seizures, particularly electrographic discharge, including their definition, etiology, classification, diagnosis, management, and neurodevelopmental outcomes.
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Affiliation(s)
- Menna Hashish
- Neonatal Intensive Care Unit, Mansoura University Children's Hospital, Mansoura, Egypt
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Massey SL, Glass HC, Shellhaas RA, Bonifacio S, Chang T, Chu C, Cilio MR, Lemmon ME, McCulloch CE, Soul JS, Thomas C, Wusthoff CJ, Xiao R, Abend NS. Characteristics of Neonates with Cardiopulmonary Disease Who Experience Seizures: A Multicenter Study. J Pediatr 2022; 242:63-73. [PMID: 34728234 PMCID: PMC8882137 DOI: 10.1016/j.jpeds.2021.10.058] [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: 06/29/2021] [Revised: 10/18/2021] [Accepted: 10/27/2021] [Indexed: 10/19/2022]
Abstract
OBJECTIVE To compare key seizure and outcome characteristics between neonates with and without cardiopulmonary disease. STUDY DESIGN The Neonatal Seizure Registry is a multicenter, prospectively acquired cohort of neonates with clinical or electroencephalographic (EEG)-confirmed seizures. Cardiopulmonary disease was defined as congenital heart disease, congenital diaphragmatic hernia, and exposure to extracorporeal membrane oxygenation. We assessed continuous EEG monitoring strategy, seizure characteristics, seizure management, and outcomes for neonates with and without cardiopulmonary disease. RESULTS We evaluated 83 neonates with cardiopulmonary disease and 271 neonates without cardiopulmonary disease. Neonates with cardiopulmonary disease were more likely to have EEG-only seizures (40% vs 21%, P < .001) and experience their first seizure later than those without cardiopulmonary disease (174 vs 21 hours of age, P < .001), but they had similar seizure exposure (many-recurrent electrographic seizures 39% vs 43%, P = .27). Phenobarbital was the primary initial antiseizure medication for both groups (90%), and both groups had similarly high rates of incomplete response to initial antiseizure medication administration (66% vs 68%, P = .75). Neonates with cardiopulmonary disease were discharged from the hospital later (hazard ratio 0.34, 95% CI 0.25-0.45, P < .001), although rates of in-hospital mortality were similar between the groups (hazard ratio 1.13, 95% CI 0.66-1.94, P = .64). CONCLUSION Neonates with and without cardiopulmonary disease had a similarly high seizure exposure, but neonates with cardiopulmonary disease were more likely to experience EEG-only seizures and had seizure onset later in the clinical course. Phenobarbital was the most common seizure treatment, but seizures were often refractory to initial antiseizure medication. These data support guidelines recommending continuous EEG in neonates with cardiopulmonary disease and indicate a need for optimized therapeutic strategies.
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Affiliation(s)
- Shavonne L. Massey
- Division of Neurology, Departments of Neurology and Pediatrics, Children’s Hospital of Philadelphia, University of Pennsylvania School of Medicine, Philadelphia, PA, USA
| | - Hannah C. Glass
- Departments of Neurology and UCSF Weill Institute for Neuroscience, University of California, San Francisco,Department of Epidemiology & Biostatistics, University of California San Francisco
| | | | | | - Taeun Chang
- Department of Neurology, Children’s National Hospital, George Washington University School of Medicine & Health Sciences
| | - Catherine Chu
- Department of Neurology, Massachusetts General Hospital, Harvard Medical School
| | - Maria Roberta Cilio
- Departments of Pediatrics, Saint-Luc University Hospital, Catholic University of Louvain, Brussels, Belgium
| | - Monica E. Lemmon
- Department of Pediatrics and Population Health Sciences, Duke University School of Medicine
| | - Charles E. McCulloch
- Department of Epidemiology & Biostatistics, University of California San Francisco
| | - Janet S. Soul
- Department of Neurology, Boston Children’s Hospital, Harvard Medical School
| | - Cameron Thomas
- Department of Pediatrics, Division of Neurology, Cincinnati Children’s Hospital Medical Center, University of Cincinnati
| | | | - Rui Xiao
- Department of Biostatistics, Epidemiology, and Informatics, University of Pennsylvania, Philadelphia, PA, USA
| | - Nicholas S. Abend
- Division of Neurology, Departments of Neurology and Pediatrics, Children’s Hospital of Philadelphia, University of Pennsylvania School of Medicine, Philadelphia, PA, USA,Department of Biostatistics, Epidemiology, and Informatics, University of Pennsylvania, Philadelphia, PA, USA,Department of Anesthesia & Critical Care Medicine, University of Pennsylvania
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Herzberg EM, Machie M, Glass HC, Shellhaas RA, Wusthoff CJ, Chang T, Abend NS, Chu CJ, Cilio MR, Bonifacio SL, Massey SL, McCulloch CE, Soul JS. Seizure Severity and Treatment Response in Newborn Infants with Seizures Attributed to Intracranial Hemorrhage. J Pediatr 2022; 242:121-128.e1. [PMID: 34780777 DOI: 10.1016/j.jpeds.2021.11.012] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/11/2021] [Revised: 11/03/2021] [Accepted: 11/04/2021] [Indexed: 11/18/2022]
Abstract
OBJECTIVE We sought to characterize intracranial hemorrhage (ICH) as a seizure etiology in infants born term and preterm. For infants born term, we sought to compare seizure severity and treatment response for multisite vs single-site ICH and hypoxic-ischemic encephalopathy (HIE) with vs without ICH. STUDY DESIGN We studied 112 newborn infants with seizures attributed to ICH and 201 infants born at term with seizures attributed to HIE, using a cohort of consecutive infants with clinically diagnosed and/or electrographic seizures prospectively enrolled in the multicenter Neonatal Seizure Registry. We compared seizure severity and treatment response among infants with complicated ICH, defined as multisite vs single-site ICH and HIE with vs without ICH. RESULTS ICH was a more common seizure etiology in infants born preterm vs term (27% vs 10%, P < .001). Most infants had subclinical seizures (74%) and an incomplete response to initial antiseizure medication (ASM) (68%). In infants born term, multisite ICH was associated with more subclinical seizures than single-site ICH (93% vs 66%, P = .05) and an incomplete response to the initial ASM (100% vs 66%, P = .02). Status epilepticus was more common in HIE with ICH vs HIE alone (38% vs 17%, P = .05). CONCLUSIONS Seizure severity was greater and treatment response was lower among infants born term with complicated ICH. These data support the use of continuous video electroencephalogram monitoring to accurately detect seizures and a multistep treatment plan that considers early use of multiple ASMs, particularly with parenchymal and high-grade intraventricular hemorrhage and complicated ICH.
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Affiliation(s)
- Emily M Herzberg
- Department of Neurology, Boston Children's Hospital, Boston, MA; Division of Newborn Medicine, Department of Pediatrics, Massachusetts General Hospital, Boston, MA
| | - Michelle Machie
- Departments of Neurology and Pediatrics, University of Texas Southwestern Medical Center, Dallas, TX
| | - Hannah C Glass
- Department of Neurology and Weill Institute for Neuroscience, University of California, San Francisco, CA; Department of Pediatrics, Benioff Children's Hospital, University of California, San Francisco, CA; Department of Epidemiology and Biostatistics, University of California, San Francisco, CA
| | | | | | - Taeun Chang
- Department of Neurology, Children's National Hospital, George Washington University School of Medicine, Washington, DC
| | - Nicholas S Abend
- Departments of Neurology and Pediatrics, Children's Hospital of Philadelphia and Perelman School of Medicine at the University of Pennsylvania, Philadelphia, PA
| | - Catherine J Chu
- Department of Neurology, Massachusetts General Hospital, Boston, MA
| | - M Roberta Cilio
- Division of Pediatric Neurology, Department of Pediatrics, Saint-Luc University Hospital, Université Catholique de Louvain, Brussels, Belgium
| | - Sonia L Bonifacio
- Division of Neonatal and Developmental Medicine, Department of Pediatrics, Stanford University, Palo Alto, CA
| | - Shavonne L Massey
- Departments of Neurology and Pediatrics, Children's Hospital of Philadelphia and Perelman School of Medicine at the University of Pennsylvania, Philadelphia, PA
| | - Charles E McCulloch
- Department of Epidemiology and Biostatistics, University of California, San Francisco, CA
| | - Janet S Soul
- Department of Neurology, Boston Children's Hospital, Boston, MA.
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12
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Sullivan BJ, Kipnis PA, Carter BM, Shao LR, Kadam SD. Targeting ischemia-induced KCC2 hypofunction rescues refractory neonatal seizures and mitigates epileptogenesis in a mouse model. Sci Signal 2021; 14:eabg2648. [PMID: 34752143 DOI: 10.1126/scisignal.abg2648] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Abstract
[Figure: see text].
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Affiliation(s)
- Brennan J Sullivan
- Neuroscience Laboratory, Hugo Moser Research Institute at Kennedy Krieger, Baltimore, MD, USA
| | - Pavel A Kipnis
- Neuroscience Laboratory, Hugo Moser Research Institute at Kennedy Krieger, Baltimore, MD, USA
| | - Brandon M Carter
- Neuroscience Laboratory, Hugo Moser Research Institute at Kennedy Krieger, Baltimore, MD, USA
| | - Li-Rong Shao
- Division of Pediatric Neurology, Department of Neurology, Johns Hopkins University School of Medicine, Baltimore, MD, USA
| | - Shilpa D Kadam
- Neuroscience Laboratory, Hugo Moser Research Institute at Kennedy Krieger, Baltimore, MD, USA.,Department of Neurology, Johns Hopkins University School of Medicine, Baltimore, MD 21205, USA
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13
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Lemmon ME, Glass HC, Shellhaas RA, Barks MC, Bansal S, Annis D, Guerriero JL, Pilon B, Wusthoff CJ, Chang T, Soul JS, Chu CJ, Thomas C, Massey SL, Abend NS, Rau S, Rogers EE, Franck LS. Family-Centered Care for Children and Families Impacted by Neonatal Seizures: Advice From Parents. Pediatr Neurol 2021; 124:26-32. [PMID: 34509000 PMCID: PMC8523194 DOI: 10.1016/j.pediatrneurol.2021.07.013] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/19/2021] [Revised: 07/21/2021] [Accepted: 07/25/2021] [Indexed: 11/24/2022]
Abstract
BACKGROUND Parents of neonates with seizures are at risk of mental health symptoms due to the impact of illness on family life, prognostic uncertainty, and the emotional toll of hospitalization. A family-centered approach is the preferred model to mitigate these challenges. We aimed to identify strategies to promote family-centered care through an analysis of parent-offered advice to clinicians caring for neonates with seizures. METHODS This prospective, observational, and multicenter (Neonatal Seizure Registry) study enrolled parents of neonates with acute symptomatic seizures. Parents completed surveys about family well-being at 12, 18, and 24 months corrected gestational age. Parents were asked open-ended questions eliciting their advice to clinicians caring for neonates with seizures. Responses were analyzed using a conventional content analysis approach. RESULTS Among the 310 parents who completed surveys, 118 (38%) shared advice for clinicians. These parents were predominantly mothers (n = 103, 87%). Three overarching themes were identified. (1) Communicate information effectively: parents appreciate when clinicians offer transparent and balanced information in an accessible way. (2) Understand and validate parent experience: parents value clinicians who display empathy, compassion, and a commitment to parent-partnered clinical care. (3) Providesupportand resources: parents benefit from emotional support, education, connection with peers, and help navigating the health care system. CONCLUSIONS Parents caring for neonates with seizures appreciate a family-centered approach in health care encounters, including skilled communication, understanding and validation of the parent experience, and provision of support and resources. Future interventions should focus on building structures to reinforce these priorities.
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Affiliation(s)
- Monica E. Lemmon
- Division of Pediatric Neurology and Developmental Medicine, Department of Pediatrics, Duke University School of Medicine, Durham, North Carolina, USA,Margolis Center for Health Policy, Duke University, Durham, North Carolina, USA
| | - Hannah C. Glass
- Departments of Neurology and Pediatrics, UCSF Benioff Children’s Hospital, University of California, San Francisco, San Francisco, California, USA,Department of Epidemiology & Biostatistics, University of California, San Francisco, San Francisco, California, USA
| | - Renée A. Shellhaas
- Department of Pediatrics, University of Michigan, Ann Arbor, Michigan, USA
| | - Mary Carol Barks
- Margolis Center for Health Policy, Duke University, Durham, North Carolina, USA
| | - Simran Bansal
- Division of Pediatric Neurology and Developmental Medicine, Department of Pediatrics, Duke University School of Medicine, Durham, North Carolina, USA
| | - Dana Annis
- NSR Parent Partner, Children’s National Hospital, Washington, DC, USA
| | - Jennifer L. Guerriero
- NSR Parent Partner, Children’s Hospital Boston, Boston, MA, USA,Dana Farber Cancer Institute
| | | | | | - Taeun Chang
- Department of Neurology, Children’s National Hospital, George Washington University School of Medicine, Washington, DC, USA
| | - Janet S. Soul
- Department of Neurology, Boston Children’s Hospital, Harvard Medical School, Boston, Massachusetts, USA
| | - Catherine J. Chu
- Department of Neurology, Massachusetts General Hospital, Harvard Medical School, Boston, Massachusetts, USA
| | - Cameron Thomas
- Department of Pediatrics, University of Cincinnati, College of Medicine, Cincinnati, Ohio, USA,Division of Neurology, Cincinnati Children’s Hospital Medical Center, Cincinnati, Ohio, USA
| | - Shavonne L. Massey
- Departments of Neurology and Pediatrics, Children’s Hospital of Philadelphia and Perelman School of Medicine at the University of Pennsylvania, Philadelphia, Pennsylvania, USA
| | - Nicholas S. Abend
- Departments of Neurology and Pediatrics, Children’s Hospital of Philadelphia and Perelman School of Medicine at the University of Pennsylvania, Philadelphia, Pennsylvania, USA,Department of Anesthesia and Critical Care Medicine, Perelman School of Medicine at the University of Pennsylvania, Philadelphia, Pennsylvania, USA
| | - Stephanie Rau
- Department of Pediatrics, University of Michigan, Ann Arbor, Michigan, USA
| | - Elizabeth E. Rogers
- Departments of Neurology and Pediatrics, UCSF Benioff Children’s Hospital, University of California, San Francisco, San Francisco, California, USA
| | - Linda S. Franck
- Department of Family Health Care Nursing, University of California, San Francisco, San Francisco, California, USA
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14
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Hooper RG, Ramaswamy VV, Wahid RM, Satodia P, Bhulani A. Levetiracetam as the first-line treatment for neonatal seizures: a systematic review and meta-analysis. Dev Med Child Neurol 2021; 63:1283-1293. [PMID: 34124790 DOI: 10.1111/dmcn.14943] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Accepted: 04/26/2021] [Indexed: 12/19/2022]
Abstract
AIM To assess the effectiveness and safety of levetiracetam when used as first-line treatment of neonatal seizures. METHOD Four electronic databases, Medline, Embase, Web of Science, and ClinicalTrials.gov were systematically searched from inception until 20th November 2020. Randomized controlled trials (RCTs) and observational studies that included neonates born preterm and term were eligible for inclusion. The primary outcome measure was levetiracetam effectiveness, defined as seizure cessation within 24 hours of starting treatment. Secondary outcomes included short-term adverse events, mortality before discharge, and long-term neurodevelopmental outcomes. RESULTS Fourteen studies assessing 1188 neonates were included: four RCTs, three observational trials with phenobarbital as the control arm, and seven observational studies of levetiracetam with no control arm. Pooled efficacy of levetiracetam from observational studies was 45% (95% confidence interval [CI] 34-57%) (GRADE - very low). Meta-analysis of RCTs evaluating levetiracetam versus phenobarbital showed that both were equally effective (risk ratio [95% CI] 0.6 [0.30-1.20]) (GRADE - very low). Levetiracetam resulted in a lower risk of short-term adverse events compared to phenobarbital (risk ratio [95% CI] 0.24 [0.06-0.92]) (GRADE - moderate). INTERPRETATION Very low certainty of evidence suggests levetiracetam might not be more effective than phenobarbital. Moderate certainty of evidence indicates levetiracetam is associated with a lower risk of adverse events. Future trials on neonatal antiseizure medication therapy should include continuous electroencephalogram (EEG) monitoring as standard of care and enrol a homogenous population with similar seizure aetiology. What this paper adds Levetiracetam is effective in 45% of neonatal seizures. Levetiracetam might not be more effective than phenobarbital. Levetiracetam is likely to be safer than phenobarbital. Evidence available is limited and of very low certainty.
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Affiliation(s)
- Robert G Hooper
- University of Warwick, Coventry, UK.,University Hospitals Coventry and Warwickshire NHS Trust, Coventry, UK
| | | | - Rachael M Wahid
- University of Warwick, Coventry, UK.,University Hospitals Coventry and Warwickshire NHS Trust, Coventry, UK
| | - Prakash Satodia
- University of Warwick, Coventry, UK.,University Hospitals Coventry and Warwickshire NHS Trust, Coventry, UK
| | - Adarsh Bhulani
- University Hospitals Coventry and Warwickshire NHS Trust, Coventry, UK
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15
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Ziobro JM, Eschbach K, Shellhaas RA. Novel Therapeutics for Neonatal Seizures. Neurotherapeutics 2021; 18:1564-1581. [PMID: 34386906 PMCID: PMC8608938 DOI: 10.1007/s13311-021-01085-8] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 06/26/2021] [Indexed: 02/04/2023] Open
Abstract
Neonatal seizures are a common neurologic emergency for which therapies have not significantly changed in decades. Improvements in diagnosis and pathophysiologic understanding of the distinct features of acute symptomatic seizures and neonatal-onset epilepsies present exceptional opportunities for development of precision therapies with potential to improve outcomes. Herein, we discuss the pathophysiology of neonatal seizures and review the evidence for currently available treatment. We present emerging therapies in clinical and preclinical development for the treatment of acute symptomatic neonatal seizures. Lastly, we discuss the role of precision therapies for genetic neonatal-onset epilepsies and address barriers and goals for developing new therapies for clinical care.
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Affiliation(s)
- Julie M Ziobro
- Department of Pediatrics, Michigan Medicine, C.S. Mott Children's Hospital, University of Michigan, 1540 E. Hospital Dr, Ann Arbor, MI, USA.
| | - Krista Eschbach
- Department of Pediatrics, Section of Neurology, Denver Anschutz School of Medicine, Children's Hospital Colorado, University of Colorado, Aurora, CO, 80045, USA
| | - Renée A Shellhaas
- Department of Pediatrics, Michigan Medicine, C.S. Mott Children's Hospital, University of Michigan, 1540 E. Hospital Dr, Ann Arbor, MI, USA
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16
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Wusthoff CJ, Sundaram V, Abend NS, Massey SL, Lemmon ME, Thomas C, McCulloch CE, Chang T, Soul JS, Chu CJ, Rogers EE, Bonifacio SL, Cilio MR, Glass HC, Shellhaas RA. Seizure Control in Neonates Undergoing Screening vs Confirmatory EEG Monitoring. Neurology 2021; 97:e587-e596. [PMID: 34078719 PMCID: PMC8424499 DOI: 10.1212/wnl.0000000000012293] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/29/2020] [Accepted: 05/03/2021] [Indexed: 12/02/2022] Open
Abstract
Objective To determine whether screening continuous EEG monitoring (cEEG) is associated with greater odds of treatment success for neonatal seizures. Methods We included term neonates with acute symptomatic seizures enrolled in the Neonatal Seizure Registry (NSR), a prospective, multicenter cohort of neonates with seizures. We compared 2 cEEG approaches: (1) screening cEEG, initiated for indications of encephalopathy or paralysis without suspected clinical seizures; and (2) confirmatory cEEG, initiated for the indication of clinical events suspicious for seizures, either alone or in addition to other indications. The primary outcome was successful response to initial seizure treatment, defined as seizures resolved without recurrence within 30 minutes after initial loading dose of antiseizure medicine. Multivariable logistic regression analyses assessed the association between cEEG approach and successful seizure treatment. Results Among 514 neonates included, 161 (31%) had screening cEEG and 353 (69%) had confirmatory cEEG. Neonates with screening cEEG had a higher proportion of successful initial seizure treatment than neonates with confirmatory cEEG (39% vs 18%; p < 0.0001). After adjusting for covariates, there remained a greater odds ratio (OR) for successful initial seizure treatment in the screening vs confirmatory cEEG groups (adjusted OR 2.44, 95% confidence interval 1.45–4.11, p = 0.0008). Conclusions These findings provide evidence from a large, contemporary cohort of neonates that a screening cEEG approach may improve odds of successful treatment of acute seizures. Classification of Evidence This study provides Class III evidence that for neonates a screening cEEG approach, compared to a confirmatory EEG approach, increases the probability of successful treatment of acute seizures.
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Affiliation(s)
- Courtney J Wusthoff
- From the Divisions of Child Neurology and Pediatrics (Neonatology) (C.J.W.) and Division of Neonatal & Developmental Medicine, Department of Pediatrics (S.L.B.), Stanford University; Quantitative Sciences Unit (V.S.), Department of Medicine, Stanford University School of Medicine, Palo Alto, CA; Departments of Neurology (N.S.A., S.L.M.), Pediatrics (N.S.A., S.L.M.), and Anesthesia & Critical Care Medicine (N.S.A.), University of Pennsylvania Perelman School of Medicine; Department of Pediatrics (Division of Neurology) (N.S.A., S.L.M.), Children's Hospital of Philadelphia, PA; Departments of Pediatrics and Population Health Sciences (M.E.L.), Duke University School of Medicine, Durham, NC; Department of Pediatrics (C.T.), College of Medicine, Division of Neurology, Cincinnati Children's Hospital Medical Center, University of Cincinnati, OH; Departments of Epidemiology and Biostatistics (C.E.M., H.C.G.) and Pediatrics (E.E.R.) and Department of Neurology and Weill Institute for Neuroscience and Department of Pediatrics, UCSF Benioff Children's Hospital (H.C.G.), University of California San Francisco; Neurology (T.C.), George Washington University School of Medicine, Children's National Hospital, Washington, DC; Department of Neurology (J.S.S.), Boston Children's Hospital, Harvard Medical School, MA; Department of Neurology (C.J.C.), Massachusetts General Hospital, Harvard Medical School, Boston; Division of Pediatric Neurology (M.R.C.), Department of Pediatrics, Saint-Luc University Hospital, Université Catholique de Louvain, Brussels, Belgium; and Division of Pediatric Neurology (R.A.S.), Department of Pediatrics, Michigan Medicine, University of Michigan, Ann Arbor.
| | - Vandana Sundaram
- From the Divisions of Child Neurology and Pediatrics (Neonatology) (C.J.W.) and Division of Neonatal & Developmental Medicine, Department of Pediatrics (S.L.B.), Stanford University; Quantitative Sciences Unit (V.S.), Department of Medicine, Stanford University School of Medicine, Palo Alto, CA; Departments of Neurology (N.S.A., S.L.M.), Pediatrics (N.S.A., S.L.M.), and Anesthesia & Critical Care Medicine (N.S.A.), University of Pennsylvania Perelman School of Medicine; Department of Pediatrics (Division of Neurology) (N.S.A., S.L.M.), Children's Hospital of Philadelphia, PA; Departments of Pediatrics and Population Health Sciences (M.E.L.), Duke University School of Medicine, Durham, NC; Department of Pediatrics (C.T.), College of Medicine, Division of Neurology, Cincinnati Children's Hospital Medical Center, University of Cincinnati, OH; Departments of Epidemiology and Biostatistics (C.E.M., H.C.G.) and Pediatrics (E.E.R.) and Department of Neurology and Weill Institute for Neuroscience and Department of Pediatrics, UCSF Benioff Children's Hospital (H.C.G.), University of California San Francisco; Neurology (T.C.), George Washington University School of Medicine, Children's National Hospital, Washington, DC; Department of Neurology (J.S.S.), Boston Children's Hospital, Harvard Medical School, MA; Department of Neurology (C.J.C.), Massachusetts General Hospital, Harvard Medical School, Boston; Division of Pediatric Neurology (M.R.C.), Department of Pediatrics, Saint-Luc University Hospital, Université Catholique de Louvain, Brussels, Belgium; and Division of Pediatric Neurology (R.A.S.), Department of Pediatrics, Michigan Medicine, University of Michigan, Ann Arbor
| | - Nicholas S Abend
- From the Divisions of Child Neurology and Pediatrics (Neonatology) (C.J.W.) and Division of Neonatal & Developmental Medicine, Department of Pediatrics (S.L.B.), Stanford University; Quantitative Sciences Unit (V.S.), Department of Medicine, Stanford University School of Medicine, Palo Alto, CA; Departments of Neurology (N.S.A., S.L.M.), Pediatrics (N.S.A., S.L.M.), and Anesthesia & Critical Care Medicine (N.S.A.), University of Pennsylvania Perelman School of Medicine; Department of Pediatrics (Division of Neurology) (N.S.A., S.L.M.), Children's Hospital of Philadelphia, PA; Departments of Pediatrics and Population Health Sciences (M.E.L.), Duke University School of Medicine, Durham, NC; Department of Pediatrics (C.T.), College of Medicine, Division of Neurology, Cincinnati Children's Hospital Medical Center, University of Cincinnati, OH; Departments of Epidemiology and Biostatistics (C.E.M., H.C.G.) and Pediatrics (E.E.R.) and Department of Neurology and Weill Institute for Neuroscience and Department of Pediatrics, UCSF Benioff Children's Hospital (H.C.G.), University of California San Francisco; Neurology (T.C.), George Washington University School of Medicine, Children's National Hospital, Washington, DC; Department of Neurology (J.S.S.), Boston Children's Hospital, Harvard Medical School, MA; Department of Neurology (C.J.C.), Massachusetts General Hospital, Harvard Medical School, Boston; Division of Pediatric Neurology (M.R.C.), Department of Pediatrics, Saint-Luc University Hospital, Université Catholique de Louvain, Brussels, Belgium; and Division of Pediatric Neurology (R.A.S.), Department of Pediatrics, Michigan Medicine, University of Michigan, Ann Arbor
| | - Shavonne L Massey
- From the Divisions of Child Neurology and Pediatrics (Neonatology) (C.J.W.) and Division of Neonatal & Developmental Medicine, Department of Pediatrics (S.L.B.), Stanford University; Quantitative Sciences Unit (V.S.), Department of Medicine, Stanford University School of Medicine, Palo Alto, CA; Departments of Neurology (N.S.A., S.L.M.), Pediatrics (N.S.A., S.L.M.), and Anesthesia & Critical Care Medicine (N.S.A.), University of Pennsylvania Perelman School of Medicine; Department of Pediatrics (Division of Neurology) (N.S.A., S.L.M.), Children's Hospital of Philadelphia, PA; Departments of Pediatrics and Population Health Sciences (M.E.L.), Duke University School of Medicine, Durham, NC; Department of Pediatrics (C.T.), College of Medicine, Division of Neurology, Cincinnati Children's Hospital Medical Center, University of Cincinnati, OH; Departments of Epidemiology and Biostatistics (C.E.M., H.C.G.) and Pediatrics (E.E.R.) and Department of Neurology and Weill Institute for Neuroscience and Department of Pediatrics, UCSF Benioff Children's Hospital (H.C.G.), University of California San Francisco; Neurology (T.C.), George Washington University School of Medicine, Children's National Hospital, Washington, DC; Department of Neurology (J.S.S.), Boston Children's Hospital, Harvard Medical School, MA; Department of Neurology (C.J.C.), Massachusetts General Hospital, Harvard Medical School, Boston; Division of Pediatric Neurology (M.R.C.), Department of Pediatrics, Saint-Luc University Hospital, Université Catholique de Louvain, Brussels, Belgium; and Division of Pediatric Neurology (R.A.S.), Department of Pediatrics, Michigan Medicine, University of Michigan, Ann Arbor
| | - Monica E Lemmon
- From the Divisions of Child Neurology and Pediatrics (Neonatology) (C.J.W.) and Division of Neonatal & Developmental Medicine, Department of Pediatrics (S.L.B.), Stanford University; Quantitative Sciences Unit (V.S.), Department of Medicine, Stanford University School of Medicine, Palo Alto, CA; Departments of Neurology (N.S.A., S.L.M.), Pediatrics (N.S.A., S.L.M.), and Anesthesia & Critical Care Medicine (N.S.A.), University of Pennsylvania Perelman School of Medicine; Department of Pediatrics (Division of Neurology) (N.S.A., S.L.M.), Children's Hospital of Philadelphia, PA; Departments of Pediatrics and Population Health Sciences (M.E.L.), Duke University School of Medicine, Durham, NC; Department of Pediatrics (C.T.), College of Medicine, Division of Neurology, Cincinnati Children's Hospital Medical Center, University of Cincinnati, OH; Departments of Epidemiology and Biostatistics (C.E.M., H.C.G.) and Pediatrics (E.E.R.) and Department of Neurology and Weill Institute for Neuroscience and Department of Pediatrics, UCSF Benioff Children's Hospital (H.C.G.), University of California San Francisco; Neurology (T.C.), George Washington University School of Medicine, Children's National Hospital, Washington, DC; Department of Neurology (J.S.S.), Boston Children's Hospital, Harvard Medical School, MA; Department of Neurology (C.J.C.), Massachusetts General Hospital, Harvard Medical School, Boston; Division of Pediatric Neurology (M.R.C.), Department of Pediatrics, Saint-Luc University Hospital, Université Catholique de Louvain, Brussels, Belgium; and Division of Pediatric Neurology (R.A.S.), Department of Pediatrics, Michigan Medicine, University of Michigan, Ann Arbor
| | - Cameron Thomas
- From the Divisions of Child Neurology and Pediatrics (Neonatology) (C.J.W.) and Division of Neonatal & Developmental Medicine, Department of Pediatrics (S.L.B.), Stanford University; Quantitative Sciences Unit (V.S.), Department of Medicine, Stanford University School of Medicine, Palo Alto, CA; Departments of Neurology (N.S.A., S.L.M.), Pediatrics (N.S.A., S.L.M.), and Anesthesia & Critical Care Medicine (N.S.A.), University of Pennsylvania Perelman School of Medicine; Department of Pediatrics (Division of Neurology) (N.S.A., S.L.M.), Children's Hospital of Philadelphia, PA; Departments of Pediatrics and Population Health Sciences (M.E.L.), Duke University School of Medicine, Durham, NC; Department of Pediatrics (C.T.), College of Medicine, Division of Neurology, Cincinnati Children's Hospital Medical Center, University of Cincinnati, OH; Departments of Epidemiology and Biostatistics (C.E.M., H.C.G.) and Pediatrics (E.E.R.) and Department of Neurology and Weill Institute for Neuroscience and Department of Pediatrics, UCSF Benioff Children's Hospital (H.C.G.), University of California San Francisco; Neurology (T.C.), George Washington University School of Medicine, Children's National Hospital, Washington, DC; Department of Neurology (J.S.S.), Boston Children's Hospital, Harvard Medical School, MA; Department of Neurology (C.J.C.), Massachusetts General Hospital, Harvard Medical School, Boston; Division of Pediatric Neurology (M.R.C.), Department of Pediatrics, Saint-Luc University Hospital, Université Catholique de Louvain, Brussels, Belgium; and Division of Pediatric Neurology (R.A.S.), Department of Pediatrics, Michigan Medicine, University of Michigan, Ann Arbor
| | - Charles E McCulloch
- From the Divisions of Child Neurology and Pediatrics (Neonatology) (C.J.W.) and Division of Neonatal & Developmental Medicine, Department of Pediatrics (S.L.B.), Stanford University; Quantitative Sciences Unit (V.S.), Department of Medicine, Stanford University School of Medicine, Palo Alto, CA; Departments of Neurology (N.S.A., S.L.M.), Pediatrics (N.S.A., S.L.M.), and Anesthesia & Critical Care Medicine (N.S.A.), University of Pennsylvania Perelman School of Medicine; Department of Pediatrics (Division of Neurology) (N.S.A., S.L.M.), Children's Hospital of Philadelphia, PA; Departments of Pediatrics and Population Health Sciences (M.E.L.), Duke University School of Medicine, Durham, NC; Department of Pediatrics (C.T.), College of Medicine, Division of Neurology, Cincinnati Children's Hospital Medical Center, University of Cincinnati, OH; Departments of Epidemiology and Biostatistics (C.E.M., H.C.G.) and Pediatrics (E.E.R.) and Department of Neurology and Weill Institute for Neuroscience and Department of Pediatrics, UCSF Benioff Children's Hospital (H.C.G.), University of California San Francisco; Neurology (T.C.), George Washington University School of Medicine, Children's National Hospital, Washington, DC; Department of Neurology (J.S.S.), Boston Children's Hospital, Harvard Medical School, MA; Department of Neurology (C.J.C.), Massachusetts General Hospital, Harvard Medical School, Boston; Division of Pediatric Neurology (M.R.C.), Department of Pediatrics, Saint-Luc University Hospital, Université Catholique de Louvain, Brussels, Belgium; and Division of Pediatric Neurology (R.A.S.), Department of Pediatrics, Michigan Medicine, University of Michigan, Ann Arbor
| | - Taeun Chang
- From the Divisions of Child Neurology and Pediatrics (Neonatology) (C.J.W.) and Division of Neonatal & Developmental Medicine, Department of Pediatrics (S.L.B.), Stanford University; Quantitative Sciences Unit (V.S.), Department of Medicine, Stanford University School of Medicine, Palo Alto, CA; Departments of Neurology (N.S.A., S.L.M.), Pediatrics (N.S.A., S.L.M.), and Anesthesia & Critical Care Medicine (N.S.A.), University of Pennsylvania Perelman School of Medicine; Department of Pediatrics (Division of Neurology) (N.S.A., S.L.M.), Children's Hospital of Philadelphia, PA; Departments of Pediatrics and Population Health Sciences (M.E.L.), Duke University School of Medicine, Durham, NC; Department of Pediatrics (C.T.), College of Medicine, Division of Neurology, Cincinnati Children's Hospital Medical Center, University of Cincinnati, OH; Departments of Epidemiology and Biostatistics (C.E.M., H.C.G.) and Pediatrics (E.E.R.) and Department of Neurology and Weill Institute for Neuroscience and Department of Pediatrics, UCSF Benioff Children's Hospital (H.C.G.), University of California San Francisco; Neurology (T.C.), George Washington University School of Medicine, Children's National Hospital, Washington, DC; Department of Neurology (J.S.S.), Boston Children's Hospital, Harvard Medical School, MA; Department of Neurology (C.J.C.), Massachusetts General Hospital, Harvard Medical School, Boston; Division of Pediatric Neurology (M.R.C.), Department of Pediatrics, Saint-Luc University Hospital, Université Catholique de Louvain, Brussels, Belgium; and Division of Pediatric Neurology (R.A.S.), Department of Pediatrics, Michigan Medicine, University of Michigan, Ann Arbor
| | - Janet S Soul
- From the Divisions of Child Neurology and Pediatrics (Neonatology) (C.J.W.) and Division of Neonatal & Developmental Medicine, Department of Pediatrics (S.L.B.), Stanford University; Quantitative Sciences Unit (V.S.), Department of Medicine, Stanford University School of Medicine, Palo Alto, CA; Departments of Neurology (N.S.A., S.L.M.), Pediatrics (N.S.A., S.L.M.), and Anesthesia & Critical Care Medicine (N.S.A.), University of Pennsylvania Perelman School of Medicine; Department of Pediatrics (Division of Neurology) (N.S.A., S.L.M.), Children's Hospital of Philadelphia, PA; Departments of Pediatrics and Population Health Sciences (M.E.L.), Duke University School of Medicine, Durham, NC; Department of Pediatrics (C.T.), College of Medicine, Division of Neurology, Cincinnati Children's Hospital Medical Center, University of Cincinnati, OH; Departments of Epidemiology and Biostatistics (C.E.M., H.C.G.) and Pediatrics (E.E.R.) and Department of Neurology and Weill Institute for Neuroscience and Department of Pediatrics, UCSF Benioff Children's Hospital (H.C.G.), University of California San Francisco; Neurology (T.C.), George Washington University School of Medicine, Children's National Hospital, Washington, DC; Department of Neurology (J.S.S.), Boston Children's Hospital, Harvard Medical School, MA; Department of Neurology (C.J.C.), Massachusetts General Hospital, Harvard Medical School, Boston; Division of Pediatric Neurology (M.R.C.), Department of Pediatrics, Saint-Luc University Hospital, Université Catholique de Louvain, Brussels, Belgium; and Division of Pediatric Neurology (R.A.S.), Department of Pediatrics, Michigan Medicine, University of Michigan, Ann Arbor
| | - Catherine J Chu
- From the Divisions of Child Neurology and Pediatrics (Neonatology) (C.J.W.) and Division of Neonatal & Developmental Medicine, Department of Pediatrics (S.L.B.), Stanford University; Quantitative Sciences Unit (V.S.), Department of Medicine, Stanford University School of Medicine, Palo Alto, CA; Departments of Neurology (N.S.A., S.L.M.), Pediatrics (N.S.A., S.L.M.), and Anesthesia & Critical Care Medicine (N.S.A.), University of Pennsylvania Perelman School of Medicine; Department of Pediatrics (Division of Neurology) (N.S.A., S.L.M.), Children's Hospital of Philadelphia, PA; Departments of Pediatrics and Population Health Sciences (M.E.L.), Duke University School of Medicine, Durham, NC; Department of Pediatrics (C.T.), College of Medicine, Division of Neurology, Cincinnati Children's Hospital Medical Center, University of Cincinnati, OH; Departments of Epidemiology and Biostatistics (C.E.M., H.C.G.) and Pediatrics (E.E.R.) and Department of Neurology and Weill Institute for Neuroscience and Department of Pediatrics, UCSF Benioff Children's Hospital (H.C.G.), University of California San Francisco; Neurology (T.C.), George Washington University School of Medicine, Children's National Hospital, Washington, DC; Department of Neurology (J.S.S.), Boston Children's Hospital, Harvard Medical School, MA; Department of Neurology (C.J.C.), Massachusetts General Hospital, Harvard Medical School, Boston; Division of Pediatric Neurology (M.R.C.), Department of Pediatrics, Saint-Luc University Hospital, Université Catholique de Louvain, Brussels, Belgium; and Division of Pediatric Neurology (R.A.S.), Department of Pediatrics, Michigan Medicine, University of Michigan, Ann Arbor
| | - Elizabeth E Rogers
- From the Divisions of Child Neurology and Pediatrics (Neonatology) (C.J.W.) and Division of Neonatal & Developmental Medicine, Department of Pediatrics (S.L.B.), Stanford University; Quantitative Sciences Unit (V.S.), Department of Medicine, Stanford University School of Medicine, Palo Alto, CA; Departments of Neurology (N.S.A., S.L.M.), Pediatrics (N.S.A., S.L.M.), and Anesthesia & Critical Care Medicine (N.S.A.), University of Pennsylvania Perelman School of Medicine; Department of Pediatrics (Division of Neurology) (N.S.A., S.L.M.), Children's Hospital of Philadelphia, PA; Departments of Pediatrics and Population Health Sciences (M.E.L.), Duke University School of Medicine, Durham, NC; Department of Pediatrics (C.T.), College of Medicine, Division of Neurology, Cincinnati Children's Hospital Medical Center, University of Cincinnati, OH; Departments of Epidemiology and Biostatistics (C.E.M., H.C.G.) and Pediatrics (E.E.R.) and Department of Neurology and Weill Institute for Neuroscience and Department of Pediatrics, UCSF Benioff Children's Hospital (H.C.G.), University of California San Francisco; Neurology (T.C.), George Washington University School of Medicine, Children's National Hospital, Washington, DC; Department of Neurology (J.S.S.), Boston Children's Hospital, Harvard Medical School, MA; Department of Neurology (C.J.C.), Massachusetts General Hospital, Harvard Medical School, Boston; Division of Pediatric Neurology (M.R.C.), Department of Pediatrics, Saint-Luc University Hospital, Université Catholique de Louvain, Brussels, Belgium; and Division of Pediatric Neurology (R.A.S.), Department of Pediatrics, Michigan Medicine, University of Michigan, Ann Arbor
| | - Sonia Lomeli Bonifacio
- From the Divisions of Child Neurology and Pediatrics (Neonatology) (C.J.W.) and Division of Neonatal & Developmental Medicine, Department of Pediatrics (S.L.B.), Stanford University; Quantitative Sciences Unit (V.S.), Department of Medicine, Stanford University School of Medicine, Palo Alto, CA; Departments of Neurology (N.S.A., S.L.M.), Pediatrics (N.S.A., S.L.M.), and Anesthesia & Critical Care Medicine (N.S.A.), University of Pennsylvania Perelman School of Medicine; Department of Pediatrics (Division of Neurology) (N.S.A., S.L.M.), Children's Hospital of Philadelphia, PA; Departments of Pediatrics and Population Health Sciences (M.E.L.), Duke University School of Medicine, Durham, NC; Department of Pediatrics (C.T.), College of Medicine, Division of Neurology, Cincinnati Children's Hospital Medical Center, University of Cincinnati, OH; Departments of Epidemiology and Biostatistics (C.E.M., H.C.G.) and Pediatrics (E.E.R.) and Department of Neurology and Weill Institute for Neuroscience and Department of Pediatrics, UCSF Benioff Children's Hospital (H.C.G.), University of California San Francisco; Neurology (T.C.), George Washington University School of Medicine, Children's National Hospital, Washington, DC; Department of Neurology (J.S.S.), Boston Children's Hospital, Harvard Medical School, MA; Department of Neurology (C.J.C.), Massachusetts General Hospital, Harvard Medical School, Boston; Division of Pediatric Neurology (M.R.C.), Department of Pediatrics, Saint-Luc University Hospital, Université Catholique de Louvain, Brussels, Belgium; and Division of Pediatric Neurology (R.A.S.), Department of Pediatrics, Michigan Medicine, University of Michigan, Ann Arbor
| | - Maria Roberta Cilio
- From the Divisions of Child Neurology and Pediatrics (Neonatology) (C.J.W.) and Division of Neonatal & Developmental Medicine, Department of Pediatrics (S.L.B.), Stanford University; Quantitative Sciences Unit (V.S.), Department of Medicine, Stanford University School of Medicine, Palo Alto, CA; Departments of Neurology (N.S.A., S.L.M.), Pediatrics (N.S.A., S.L.M.), and Anesthesia & Critical Care Medicine (N.S.A.), University of Pennsylvania Perelman School of Medicine; Department of Pediatrics (Division of Neurology) (N.S.A., S.L.M.), Children's Hospital of Philadelphia, PA; Departments of Pediatrics and Population Health Sciences (M.E.L.), Duke University School of Medicine, Durham, NC; Department of Pediatrics (C.T.), College of Medicine, Division of Neurology, Cincinnati Children's Hospital Medical Center, University of Cincinnati, OH; Departments of Epidemiology and Biostatistics (C.E.M., H.C.G.) and Pediatrics (E.E.R.) and Department of Neurology and Weill Institute for Neuroscience and Department of Pediatrics, UCSF Benioff Children's Hospital (H.C.G.), University of California San Francisco; Neurology (T.C.), George Washington University School of Medicine, Children's National Hospital, Washington, DC; Department of Neurology (J.S.S.), Boston Children's Hospital, Harvard Medical School, MA; Department of Neurology (C.J.C.), Massachusetts General Hospital, Harvard Medical School, Boston; Division of Pediatric Neurology (M.R.C.), Department of Pediatrics, Saint-Luc University Hospital, Université Catholique de Louvain, Brussels, Belgium; and Division of Pediatric Neurology (R.A.S.), Department of Pediatrics, Michigan Medicine, University of Michigan, Ann Arbor
| | - Hannah C Glass
- From the Divisions of Child Neurology and Pediatrics (Neonatology) (C.J.W.) and Division of Neonatal & Developmental Medicine, Department of Pediatrics (S.L.B.), Stanford University; Quantitative Sciences Unit (V.S.), Department of Medicine, Stanford University School of Medicine, Palo Alto, CA; Departments of Neurology (N.S.A., S.L.M.), Pediatrics (N.S.A., S.L.M.), and Anesthesia & Critical Care Medicine (N.S.A.), University of Pennsylvania Perelman School of Medicine; Department of Pediatrics (Division of Neurology) (N.S.A., S.L.M.), Children's Hospital of Philadelphia, PA; Departments of Pediatrics and Population Health Sciences (M.E.L.), Duke University School of Medicine, Durham, NC; Department of Pediatrics (C.T.), College of Medicine, Division of Neurology, Cincinnati Children's Hospital Medical Center, University of Cincinnati, OH; Departments of Epidemiology and Biostatistics (C.E.M., H.C.G.) and Pediatrics (E.E.R.) and Department of Neurology and Weill Institute for Neuroscience and Department of Pediatrics, UCSF Benioff Children's Hospital (H.C.G.), University of California San Francisco; Neurology (T.C.), George Washington University School of Medicine, Children's National Hospital, Washington, DC; Department of Neurology (J.S.S.), Boston Children's Hospital, Harvard Medical School, MA; Department of Neurology (C.J.C.), Massachusetts General Hospital, Harvard Medical School, Boston; Division of Pediatric Neurology (M.R.C.), Department of Pediatrics, Saint-Luc University Hospital, Université Catholique de Louvain, Brussels, Belgium; and Division of Pediatric Neurology (R.A.S.), Department of Pediatrics, Michigan Medicine, University of Michigan, Ann Arbor
| | - Renée A Shellhaas
- From the Divisions of Child Neurology and Pediatrics (Neonatology) (C.J.W.) and Division of Neonatal & Developmental Medicine, Department of Pediatrics (S.L.B.), Stanford University; Quantitative Sciences Unit (V.S.), Department of Medicine, Stanford University School of Medicine, Palo Alto, CA; Departments of Neurology (N.S.A., S.L.M.), Pediatrics (N.S.A., S.L.M.), and Anesthesia & Critical Care Medicine (N.S.A.), University of Pennsylvania Perelman School of Medicine; Department of Pediatrics (Division of Neurology) (N.S.A., S.L.M.), Children's Hospital of Philadelphia, PA; Departments of Pediatrics and Population Health Sciences (M.E.L.), Duke University School of Medicine, Durham, NC; Department of Pediatrics (C.T.), College of Medicine, Division of Neurology, Cincinnati Children's Hospital Medical Center, University of Cincinnati, OH; Departments of Epidemiology and Biostatistics (C.E.M., H.C.G.) and Pediatrics (E.E.R.) and Department of Neurology and Weill Institute for Neuroscience and Department of Pediatrics, UCSF Benioff Children's Hospital (H.C.G.), University of California San Francisco; Neurology (T.C.), George Washington University School of Medicine, Children's National Hospital, Washington, DC; Department of Neurology (J.S.S.), Boston Children's Hospital, Harvard Medical School, MA; Department of Neurology (C.J.C.), Massachusetts General Hospital, Harvard Medical School, Boston; Division of Pediatric Neurology (M.R.C.), Department of Pediatrics, Saint-Luc University Hospital, Université Catholique de Louvain, Brussels, Belgium; and Division of Pediatric Neurology (R.A.S.), Department of Pediatrics, Michigan Medicine, University of Michigan, Ann Arbor
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17
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Falsaperla R, Scalia B, Giugno A, Pavone P, Motta M, Caccamo M, Ruggieri M. Treating the symptom or treating the disease in neonatal seizures: a systematic review of the literature. Ital J Pediatr 2021; 47:85. [PMID: 33827647 PMCID: PMC8028713 DOI: 10.1186/s13052-021-01027-2] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/16/2020] [Accepted: 03/15/2021] [Indexed: 01/08/2023] Open
Abstract
Aim The existing treatment options for neonatal seizures have expanded over the last few decades, but no consensus has been reached regarding the optimal therapeutic protocols. We systematically reviewed the available literature examining neonatal seizure treatments to clarify which drugs are the most effective for the treatment of specific neurologic disorders in newborns. Method We reviewed all available, published, literature, identified using PubMed (published between August 1949 and November 2020), that focused on the pharmacological treatment of electroencephalogram (EEG)-confirmed neonatal seizures. Results Our search identified 427 articles, of which 67 were included in this review. Current knowledge allowed us to highlight the good clinical and electrographic responses of genetic early-onset epilepsies to sodium channel blockers and the overall good response to levetiracetam, whose administration has also been demonstrated to be safe in both full-term and preterm newborns. Interpretation Our work contributes by confirming the limited availability of evidence that can be used to guide the use of anticonvulsants to treat newborns in clinical practice and examining the efficacy and potentially harmful side effects of currently available drugs when used to treat the developing newborn brain; therefore, our work might also serve as a clinical reference for future studies.
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Affiliation(s)
- Raffaele Falsaperla
- Neonatal Intensive Care Unit, A.O.U. San Marco-Policlinico, University of Catania, Via Carlo Azeglio Ciampi, 95121, Catania, Italy
| | - Bruna Scalia
- Neonatal Intensive Care Unit, A.O.U. San Marco-Policlinico, University of Catania, Via Carlo Azeglio Ciampi, 95121, Catania, Italy.
| | - Andrea Giugno
- Post graduate programme in Pediatrics, Department of Clinical and Experimental Medicine, University of Catania, Catania, Italy
| | - Piero Pavone
- Unit of Clinical Pediatrics, A.O.U. "Policlinico", P.O. "G. Rodolico", University of Catania, Catania, Italy
| | - Milena Motta
- Neonatal Intensive Care Unit, A.O.U. San Marco-Policlinico, University of Catania, Via Carlo Azeglio Ciampi, 95121, Catania, Italy
| | - Martina Caccamo
- Neonatal Intensive Care Unit, A.O.U. San Marco-Policlinico, University of Catania, Via Carlo Azeglio Ciampi, 95121, Catania, Italy
| | - Martino Ruggieri
- Department of Clinical and Experimental Medicine Section of Pediatrics and Child Neuropsychiatry, A.O.U. San Marco- Policlinico, University of Catania, Catania, Italy
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18
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Alix V, James M, Jackson AH, Visintainer PF, Singh R. Efficacy of Fosphenytoin as First-Line Antiseizure Medication for Neonatal Seizures Compared to Phenobarbital. J Child Neurol 2021; 36:30-37. [PMID: 32811255 DOI: 10.1177/0883073820947514] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/16/2023]
Abstract
Currently used treatment protocols for neonatal seizures vary among centers with limited evidence to support the choice of a given antiseizure medication. Because of concerns about the potential negative impact of phenobarbital on long-term neurodevelopment outcomes, our unit transitioned to fosphenytoin as the first-line antiseizure medication. A retrospective observational cohort study was conducted to compare the acute and long-term outcomes of fosphenytoin and phenobarbital as first-line antiseizure medication for neonatal seizure treatment. The 2 study groups had similar baseline characteristics for neonatal variables as well as maternal antenatal complications. We did not find any differences in the acute outcomes between the 2 groups. However, significantly fewer infants in the fosphenytoin group had moderate-to-severe neurodevelopmental delay at the 18- and 24-month assessments. In conclusion, although both medications were equally efficacious for acute neonatal seizure control, fosphenytoin had the potential for significantly better neurodevelopmental outcomes at 18-24 months of age.
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Affiliation(s)
- Veronica Alix
- Department of Pediatrics, Baystate Children's Hospital, UMMS-Baystate, Springfield, MA, USA
| | - Mansi James
- Department of Pediatrics, Baystate Children's Hospital, UMMS-Baystate, Springfield, MA, USA
| | - Anthony H Jackson
- Department of Pediatrics, Baystate Children's Hospital, UMMS-Baystate, Springfield, MA, USA
- Department of Neurology, UMMS-Baystate, Springfield, MA, USA
| | - Paul F Visintainer
- Epidemiology & Biostatistics, Office of Research, UMMS-Baystate, Springfield, MA, USA
| | - Rachana Singh
- Department of Pediatrics, Baystate Children's Hospital, UMMS-Baystate, Springfield, MA, USA
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19
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Lechner CR, McNally MA, St Pierre M, Felling RJ, Northington FJ, Stafstrom CE, Chavez-Valdez R. Sex specific correlation between GABAergic disruption in the dorsal hippocampus and flurothyl seizure susceptibility after neonatal hypoxic-ischemic brain injury. Neurobiol Dis 2020; 148:105222. [PMID: 33309937 PMCID: PMC7864119 DOI: 10.1016/j.nbd.2020.105222] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/09/2020] [Revised: 11/16/2020] [Accepted: 12/07/2020] [Indexed: 01/12/2023] Open
Abstract
Since neonatal hypoxia-ischemia (HI) disrupts the hippocampal (Hp) GABAergic network in the mouse and Hp injury in this model correlates with flurothyl seizure susceptibility only in male mice, we hypothesized that GABAergic disruption correlates with flurothyl seizure susceptibility in a sex-specific manner. C57BL6 mice were exposed to HI (Vannucci model) versus sham procedures at P10, randomized to normothermia (NT) or therapeutic hypothermia (TH), and subsequently underwent flurothyl seizure testing at P18. Only in male mice, Hp atrophy correlated with seizure susceptibility. The number of Hp parvalbumin positive interneurons (PV+INs) decreased after HI in both sexes, but TH attenuated this deficit only in females. In males only, seizure susceptibility directly correlated with the number of PV+INs, but not somatostatin or calretinin expressing INs. Hp GABAB receptor subunit levels were decreased after HI, but unrelated to later seizure susceptibility. In contrast, Hp GABAA receptor α1 subunit (GABAARα1) levels were increased after HI. Adjusting the number of PV+ INs for their GABAARα1 expression strengthened the correlation with seizure susceptibility in male mice. Thus, we identified a novel Hp sex-specific GABA-mediated mechanism of compensation after HI that correlates with flurothyl seizure susceptibility warranting further study to better understand potential clinical translation.
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Affiliation(s)
- Charles R Lechner
- Division of Neonatology, Department of Pediatrics, Johns Hopkins University School of Medicine, 600 North Wolf Street, Baltimore, MD 21287, USA
| | - Melanie A McNally
- Department of Neurology, Johns Hopkins University School of Medicine, 600 North Wolf Street, Baltimore, MD 21287, USA
| | - Mark St Pierre
- Division of Neonatology, Department of Pediatrics, Johns Hopkins University School of Medicine, 600 North Wolf Street, Baltimore, MD 21287, USA
| | - Ryan J Felling
- Department of Neurology, Johns Hopkins University School of Medicine, 600 North Wolf Street, Baltimore, MD 21287, USA
| | - Frances J Northington
- Division of Neonatology, Department of Pediatrics, Johns Hopkins University School of Medicine, 600 North Wolf Street, Baltimore, MD 21287, USA
| | - Carl E Stafstrom
- Department of Neurology, Johns Hopkins University School of Medicine, 600 North Wolf Street, Baltimore, MD 21287, USA
| | - Raul Chavez-Valdez
- Division of Neonatology, Department of Pediatrics, Johns Hopkins University School of Medicine, 600 North Wolf Street, Baltimore, MD 21287, USA.
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20
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Lemmon M, Glass H, Shellhaas RA, Barks MC, Bailey B, Grant K, Grossbauer L, Pawlowski K, Wusthoff CJ, Chang T, Soul J, Chu CJ, Thomas C, Massey SL, Abend NS, Rogers EE, Franck LS. Parent experience of caring for neonates with seizures. Arch Dis Child Fetal Neonatal Ed 2020; 105:634-639. [PMID: 32503792 PMCID: PMC7581607 DOI: 10.1136/archdischild-2019-318612] [Citation(s) in RCA: 12] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/27/2019] [Revised: 03/10/2020] [Accepted: 03/19/2020] [Indexed: 01/31/2023]
Abstract
OBJECTIVE Neonates with seizures have a high risk of mortality and neurological morbidity. We aimed to describe the experience of parents caring for neonates with seizures. DESIGN This prospective, observational and multicentre (Neonatal Seizure Registry) study enrolled parents of neonates with acute symptomatic seizures. At the time of hospital discharge, parents answered six open-ended response questions that targeted their experience. Responses were analysed using a conventional content analysis approach. RESULTS 144 parents completed the open-ended questions (732 total comments). Four themes were identified. Sources of strength: families valued medical team consensus, opportunities to contribute to their child's care and bonding with their infant. Uncertainty: parents reported three primary types of uncertainty, all of which caused distress: (1) the daily uncertainty of the intensive care experience; (2) concerns about their child's uncertain future and (3) lack of consensus between members of the medical team. Adapting family life: parents described the many ways in which they anticipated their infant's condition would lead to adaptations in their family life, including adjusting their family's lifestyle, parenting approach and routine. Many parents described financial and work challenges due to caring for a child with medical needs. Emotional and physical toll: parents reported experiencing anxiety, fear, stress, helplessness and loss of sleep. CONCLUSIONS Parents of neonates with seizures face challenges as they adapt to and find meaning in their role as a parent of a child with medical needs. Future interventions should target facilitating parent involvement in clinical and developmental care, improving team consensus and reducing the burden associated with prognostic uncertainty.
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Affiliation(s)
- Monica Lemmon
- Pediatrics and Population Health Sciences, Duke University School of Medicine, Durham, North Carolina, USA
| | - Hannah Glass
- Neurology and Pediatrics, University of California San Francisco, San Francisco, California, USA,Epidemiology and Biostatistics, University of California San Francisco, San Francisco, California, USA
| | - Renee A Shellhaas
- Pediatrics (Neurology Division), University of Michigan, Ann Arbor, Michigan, USA
| | - Mary Carol Barks
- Duke-Margolis Center for Health Policy, Duke University, Durham, North Carolina, USA
| | - Bria Bailey
- Neurology and Pediatrics, University of California San Francisco, San Francisco, California, USA
| | - Katie Grant
- Parent Partner, Cincinnati Children’s Hospital Medical Center, Cincinnati, Ohio, USA
| | - Lisa Grossbauer
- Parent Partner, Children’s Hospital of Philadelphia, Philadelphia, Pennsylvania, USA
| | - Kamil Pawlowski
- Parent Partner, UCSF Benioff Children’s Hospital Oakland, Oakland, California, USA
| | | | - Taeun Chang
- Neurology, Children’s National Medical Center, Washington, District of Columbia, USA
| | - Janet Soul
- Neurology, Children’s Hospital, Boston, Massachusetts, USA
| | - Catherine J Chu
- Department of Neurology, Massachusetts General Hospital, Boston, Massachusetts, USA
| | - Cameron Thomas
- Pediatrics, Division of Neurology, Cincinnati Children’s Hospital Medical Center, Cincinnati, Ohio, USA
| | - Shavonne L Massey
- Departments of Neurology and Pediatrics, Children’s Hospital of Philadelphia, Philadelphia, Pennsylvania, USA
| | - Nicholas S Abend
- Neurology, Pediatrics, Anesthesia and Critical Care Medicine, Children’s Hospital of Philadelphia, Philadelphia, Pennsylvania, USA
| | - Elizabeth E Rogers
- Department of Pediatrics, University of California San Francisco, San Francisco, California, USA
| | - Linda S Franck
- Family Health Care Nursing, University of California San Francisco School of Nursing, San Francisco, California, USA
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21
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Thibault C, Massey SL, Abend NS, Naim MY, Zoraian A, Zuppa AF. Population Pharmacokinetics of Phenobarbital in Neonates and Infants on Extracorporeal Membrane Oxygenation and the Influence of Concomitant Renal Replacement Therapy. J Clin Pharmacol 2020; 61:378-387. [PMID: 32960986 DOI: 10.1002/jcph.1743] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/07/2020] [Accepted: 08/25/2020] [Indexed: 01/20/2023]
Abstract
The objective of this study was to describe the pharmacokinetics (PK) of intravenous phenobarbital in neonates and infants on extracorporeal membrane oxygenation (ECMO) and to provide dosing recommendations in this population. We performed a retrospective single-center PK study of phenobarbital in neonates and infants on ECMO between January 1, 2014, and December 31, 2018. We developed a population PK model using nonlinear mixed-effects modeling, performed simulations using the final PK parameters, and determined optimal dosing based on attainment of peak and trough concentrations between 20 and 40 mg/L. We included 35 subjects with a median (range) age and weight of 14 days (1-154 days) and 3.4 kg (1.6-8.1 kg), respectively. A total of 194 samples were included in the analysis. Five children (14%) contributing 30 samples (16%) were supported by continuous venovenous hemodiafiltration (CVVHDF). A 1-compartment model best described the data. Typical clearance and volume of distribution for a 3.4-kg infant were 0.038 L/h and 3.83 L, respectively. Clearance increased with age and CVVHDF. Although on ECMO, phenobarbital clearance in children on CVVHDF was 6-fold higher than clearance in children without CVVHDF. In typical subjects, a loading dose of 30 mg/kg/dose followed by maintenance doses of 6-7 mg/kg/day administered as divided doses every 12 hours reached goal concentrations. Age did not impact dosing recommendations. However, higher doses were needed in children on CVVHDF. We strongly recommend therapeutic drug monitoring in children on renal replacement therapy (excluding slow continuous ultrafiltration) while on ECMO.
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Affiliation(s)
- Céline Thibault
- Department of Anesthesiology and Critical Care Medicine, Children's Hospital of Philadelphia, Philadelphia, Pennsylvania, USA.,Center for Clinical Pharmacology, Children's Hospital of Philadelphia, Philadelphia, Pennsylvania, USA.,Department of Pediatrics, CHU Sainte-Justine, Montreal, QC, Canada
| | - Shavonne L Massey
- Departments of Neurology and Pediatrics, Children's Hospital of Philadelphia and the University of Pennsylvania, Philadelphia, Pennsylvania, USA
| | - Nicholas S Abend
- Departments of Neurology and Pediatrics, Children's Hospital of Philadelphia and the University of Pennsylvania, Philadelphia, Pennsylvania, USA
| | - Maryam Y Naim
- Department of Anesthesiology and Critical Care Medicine, Children's Hospital of Philadelphia, Philadelphia, Pennsylvania, USA
| | - Alexandra Zoraian
- Center for Clinical Pharmacology, Children's Hospital of Philadelphia, Philadelphia, Pennsylvania, USA
| | - Athena F Zuppa
- Department of Anesthesiology and Critical Care Medicine, Children's Hospital of Philadelphia, Philadelphia, Pennsylvania, USA.,Center for Clinical Pharmacology, Children's Hospital of Philadelphia, Philadelphia, Pennsylvania, USA
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22
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Thibault C, Naim MY, Abend NS, Licht DJ, Gaynor JW, Xiao R, Massey SL. A retrospective comparison of phenobarbital and levetiracetam for the treatment of seizures following cardiac surgery in neonates. Epilepsia 2020; 61:627-635. [PMID: 32162678 DOI: 10.1111/epi.16469] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/21/2019] [Revised: 02/07/2020] [Accepted: 02/13/2020] [Indexed: 01/10/2023]
Abstract
OBJECTIVE To compare the safety and efficacy of phenobarbital and levetiracetam in a cohort of neonates with seizures following cardiac surgery. METHODS We performed a retrospective single-center study of consecutive neonates with electrographically confirmed seizures managed with antiseizure medication after cardiac surgery from June 15, 2012 to December 31, 2018. We compared the safety and efficacy of phenobarbital and levetiracetam as first-line therapy. RESULTS First-line therapy was phenobarbital in 31 neonates and levetiracetam in 22 neonates. Phenobarbital was associated with more adverse events (P = .006). Eight neonates (14%) experienced an adverse event related to phenobarbital use, including seven with hypotension and one with respiratory depression. No adverse events were reported with levetiracetam use. The cessation of electrographic seizures was similar in both groups, including 18 neonates (58%) with seizure cessation after phenobarbital and 12 neonates (55%) with seizure cessation after levetiracetam (P = 1.0). The combined cessation rates of phenobarbital and levetiracetam when used as first- or second-line therapy were 58% and 47%, respectively (P = .47). SIGNIFICANCE Phenobarbital was associated with more adverse events than levetiracetam, and the two drugs were equally but incompletely effective in treating electrographically confirmed seizures in neonates following cardiac surgery. Given its more acceptable safety profile and potential noninferiority, levetiracetam may be a reasonable option for first-line therapy for treatment of seizures in this population. Further prospective studies are needed to confirm these results.
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Affiliation(s)
- Céline Thibault
- Department of Anesthesiology and Critical Care Medicine, Children's Hospital of Philadelphia, Philadelphia, Pennsylvania
| | - Maryam Y Naim
- Department of Anesthesiology and Critical Care Medicine, Children's Hospital of Philadelphia, Philadelphia, Pennsylvania
| | - Nicholas S Abend
- Department of Anesthesiology and Critical Care Medicine, Children's Hospital of Philadelphia, Philadelphia, Pennsylvania.,Departments of Neurology and Pediatrics, Children's Hospital of Philadelphia, University of Pennsylvania, Philadelphia, Pennsylvania
| | - Daniel J Licht
- Departments of Neurology and Pediatrics, Children's Hospital of Philadelphia, University of Pennsylvania, Philadelphia, Pennsylvania
| | - J William Gaynor
- Division of Cardiothoracic Surgery, Children's Hospital of Philadelphia, Philadelphia, Pennsylvania
| | - Rui Xiao
- Department of Biostatistics, Epidemiology, and Informatics, University of Pennsylvania School of Medicine, Philadelphia, Pennsylvania
| | - Shavonne L Massey
- Departments of Neurology and Pediatrics, Children's Hospital of Philadelphia, University of Pennsylvania, Philadelphia, Pennsylvania
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Molinero I, Galanopoulou AS, Moshé SL. Rodent models: Where it all started with these "truths". Eur J Paediatr Neurol 2020; 24:61-65. [PMID: 31875833 PMCID: PMC7179510 DOI: 10.1016/j.ejpn.2019.12.011] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Key Words] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/07/2019] [Accepted: 12/06/2019] [Indexed: 01/23/2023]
Affiliation(s)
- Isaac Molinero
- Isabelle Rapin Division of Child Neurology and Saul R. Korey Department of Neurology, Laboratory of Developmental Epilepsy, and Comprehensive Einstein/Montefiore Epilepsy Center, Albert Einstein College of Medicine, Bronx, NY, 10467, USA; 111 East 210th Street, Montefiore Medical Center, Bronx, NY, 10467, USA.
| | - Aristea S Galanopoulou
- Isabelle Rapin Division of Child Neurology and Saul R. Korey Department of Neurology, Laboratory of Developmental Epilepsy, and Comprehensive Einstein/Montefiore Epilepsy Center, Albert Einstein College of Medicine, Bronx, NY, 10467, USA; Dominick P. Purpura Department of Neuroscience, Albert Einstein College of Medicine, Bronx, NY, 10461, USA; 1410 Pelham Parkway South, Kennedy Center Rm 306, Bronx, NY, 10461, USA.
| | - Solomon L Moshé
- Isabelle Rapin Division of Child Neurology and Saul R. Korey Department of Neurology, Laboratory of Developmental Epilepsy, and Comprehensive Einstein/Montefiore Epilepsy Center, Albert Einstein College of Medicine, Bronx, NY, 10467, USA; Dominick P. Purpura Department of Neuroscience, Albert Einstein College of Medicine, Bronx, NY, 10461, USA; Department of Pediatrics, Albert Einstein College of Medicine, Bronx, NY, 10461, USA; 1410 Pelham Parkway South, Kennedy Center Rm 316, Bronx, NY, 10461, USA.
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24
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Kang SK, Ammanuel S, Adler DA, Kadam SD. Rescue of PB-resistant neonatal seizures with single-dose of small-molecule TrkB antagonist show long-term benefits. Epilepsy Res 2019; 159:106249. [PMID: 31864171 DOI: 10.1016/j.eplepsyres.2019.106249] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/26/2019] [Revised: 12/02/2019] [Accepted: 12/06/2019] [Indexed: 12/14/2022]
Abstract
A recently characterized CD-1 mouse model of phenobarbital (PB)-resistant neonatal ischemic-seizures (i.e.; unilateral carotid ligation) was shown to be associated with age-dependent (P7 vs. P10) acute seizure severity and PB-efficacy (i.e.; PB-resistant vs. PB-responsive). ANA12, a novel small-molecule TrkB antagonist, rescued the PB-resistance at P7 in a dose-dependent manner and prevented the post-ischemic downregulation of KCC2, the chief Cl- extruder in neurons. The long-term consequences of this novel rescue-intervention with ANA12 + PB in P7 and P10 ligated pups was investigated and compared to the standard first-line protocol of PB-alone loading dose. The mice underwent neurobehavioral testing, 24 h video-EEG-EMG monitoring, and immunohistochemistry in ipsi- and contralateral cortices as adults following the neonatal interventions. ANA12 + PB rescued the emergence of hyperactivity in post-ischemic P7, but not in P10 pups as adults. ANA12 + PB administration at neither P7 nor P10 significantly altered 24 h macro-sleep architecture in adults when compared to PB-alone. Behavioral state-dependent gamma (35-50 Hz) power homeostasis showed the most significant between-group differences that were age-dependent. ANA12 + PB treatment, but not PB-alone, rescued the loss of gamma power homeostasis present in P7 ligate-control but absent in P10 ligate group, highlighting the age-dependence. In contrast, PB-alone treatment, but not ANA12+PB, significantly reduced the elevated delta-AUC observed in P10 ligate-controls, when PB is efficacious by itself. These results indicate that the rescue of acute PB-resistant neonatal seizures using a novel intervention positively modulates the long-term outcomes at P7 when the seizures are refractory.
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Affiliation(s)
- S K Kang
- Department of Neuroscience, Hugo Moser Research Institute at Kennedy Krieger, Baltimore, MD 21205, USA
| | - S Ammanuel
- Department of Biomedical Engineering, Johns Hopkins University, Baltimore, MD 21205, USA
| | - D A Adler
- Department of Biomedical Engineering, Johns Hopkins University, Baltimore, MD 21205, USA
| | - S D Kadam
- Department of Neuroscience, Hugo Moser Research Institute at Kennedy Krieger, Baltimore, MD 21205, USA; Departments of Neurology, Johns Hopkins University School of Medicine, Baltimore, MD 21205, USA.
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