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https://www.readbyqxmd.com/read/28227963/predicting-seizures-from-local-field-potentials-recorded-via-intracortical-microelectrode-arrays
#1
Mehdi Aghagolzadeh, Leigh R Hochberg, Sydney S Cash, Wilson Truccolo, Mehdi Aghagolzadeh, Leigh R Hochberg, Sydney S Cash, Wilson Truccolo, Sydney S Cash, Wilson Truccolo, Mehdi Aghagolzadeh, Leigh R Hochberg
The need for new therapeutic interventions to treat pharmacologically resistant focal epileptic seizures has led recently to the development of closed-loop systems for seizure control. Once a seizure is predicted/detected by the system, electrical stimulation is delivered to prevent seizure initiation or spread. So far, seizure prediction/detection has been limited to tracking non-invasive electroencephalogram (EEG) or intracranial EEG (iEEG) signals. Here, we examine seizure prediction based on local field potentials (LFPs) from a small neocortical patch recorded via a 10×10 microelectrode array implanted in a patient with focal seizures...
August 2016: Conference Proceedings: Annual International Conference of the IEEE Engineering in Medicine and Biology Society
https://www.readbyqxmd.com/read/28227959/localizing-seizure-onset-zone-by-convolutional-transfer-entropy-from-ieeg
#2
Kang Lin, Yueming Wang, Kedi Xu, Junming Zhu, Jianmin Zhang, Xiaoxiang Zheng, Kang Lin, Yueming Wang, Kedi Xu, Junming Zhu, Jianmin Zhang, Xiaoxiang Zheng, Xiaoxiang Zheng, Junming Zhu, Yueming Wang, Kedi Xu, Kang Lin, Jianmin Zhang
Automatic localization of the seizure onset zone (SOZ) is able to output an objective result and help clinical doctors greatly in epilepsy therapy. Transfer entropy is one of the most frequently used measures based on information theory to localize the SOZ. However, if only using transfer entropy to localize the SOZ, different results can be obtained during different periods, thus humans still need to identify which one is most reasonable. This paper proposes a new method to output only a few (e.g. 1 or 2) results along a long time slot...
August 2016: Conference Proceedings: Annual International Conference of the IEEE Engineering in Medicine and Biology Society
https://www.readbyqxmd.com/read/28222319/survey-of-the-diagnostic-and-therapeutic-approach-to-new-onset-refractory-status-epilepticus
#3
Christian M Cabrera Kang, Nicolas Gaspard, Suzette M LaRoche, Brandon Foreman
PURPOSE: We conducted a survey of providers to assess for practice patterns in diagnosing and treating new-onset refractory status epilepticus (NORSE). NORSE is the occurrence of prolonged seizures that are not responsive to initial therapies in otherwise healthy individuals without obvious cause on initial presentation. This entity is thought to have multiple etiologies, including autoimmune. METHOD: A 29-question electronic survey was sent to providers included in the Neurocritical Care Society emailing list...
February 9, 2017: Seizure: the Journal of the British Epilepsy Association
https://www.readbyqxmd.com/read/28216212/-sentinel-seizure-as-a-warning-sign-preceding-fatal-rupture-of-a-giant-middle-cerebral-artery-aneurysm
#4
Lukas Andereggen, Robert H Andres
BACKGROUND: Sentinel headache is a well-known warning sign preceding subarachnoid hemorrhage (SAH) due to rupture of an intracranial aneurysm. New-onset seizure or "sentinel seizure" preceding aneurysmal SAH, however, is uncommon. CASE DESCRIPTION: We report on a 51-year-old man who presented with a new-onset seizure. Diagnostic work-up revealed a giant middle cerebral artery aneurysm without evidence of subarachnoid or intracerebral hemorrhage. Anti-epileptic therapy was initiated, elective diagnostic angiography and subsequent treatment was scheduled and the patient discharged home...
February 12, 2017: World Neurosurgery
https://www.readbyqxmd.com/read/28213197/epileptic-seizures-in-patients-following-surgical-treatment-of-acute-subdural-hematoma-incidence-risk-factors-patient-outcome-and-development-of-a-new-scoring-system-for-prophylactic-antiepileptic-treatment-gate-24-score
#5
Sae-Yeon Won, Daniel Dubinski, Eva Herrmann, Colleen Cuca, Adam Strzelczyk, Volker Seifert, Juergen Konczalla, Thomas M Freiman
OBJECT: Clinically evident or subclinical seizures are common manifestation in acute subdural hematoma (aSDH); however, there is a paucity of research investigating the relationship between seizures and aSDH. The purpose of this study is, firstly to determine incidence, predictors of seizures and secondly establish a guideline in patients with aSDH to standardize the decision for prophylactic antiepileptic treatment. METHOD: The author analyzed 139 patients with aSDH treated from 2007 until 2015...
February 14, 2017: World Neurosurgery
https://www.readbyqxmd.com/read/28212921/towards-developing-criteria-for-scleroderma-renal-crisis-a-scoping-review
#6
REVIEW
Sabrina Hoa, Edward P Stern, Christopher P Denton, Marie Hudson
OBJECTIVE: The absence of a gold standard for scleroderma renal crisis (SRC) has hindered our understanding of this problem. The objective of this scoping review was to identify the criteria used to define SRC in order to guide the development of a consensus definition for SRC. METHODS: We conducted a search in three databases: Medline, Embase and non-Ovid Pubmed. Papers were eligible for inclusion if they were full-length articles in English whose main topic was SRC or scleroderma renal disease...
February 14, 2017: Autoimmunity Reviews
https://www.readbyqxmd.com/read/28209266/changes-in-functional-organization-and-functional-connectivity-during-story-listening-in-children-with-benign-childhood-epilepsy-with-centro-temporal-spikes
#7
Jennifer Vannest, Thomas C Maloney, Jeffrey R Tenney, Jerzy P Szaflarski, Diego Morita, Anna W Byars, Mekibib Altaye, Scott K Holland, Tracy A Glauser
Children with Benign Epilepsy with Centrotemporal Spikes (BECTS), despite high likelihood for seizure remission, are reported to have subtle difficulties in language and other cognitive skills. We used functional MRI and a story listening task to examine the effect of BECTS on patterns of activation and connectivity. Language and cognitive skills were assessed using standardized measures. Twenty-four children with recently diagnosed BECTS and 40 typically-developing children participated. In a functionally-defined region of interest in right inferior frontal gyrus, BECTS patients showed a lower level of activation...
February 13, 2017: Brain and Language
https://www.readbyqxmd.com/read/28209153/a-prospective-observational-longitudinal-study-of-new-onset-seizures-and-newly-diagnosed-epilepsy-in-dogs
#8
N Fredsø, N Toft, A Sabers, M Berendt
BACKGROUND: Seizures are common in dogs and can be caused by non-epileptic conditions or epilepsy. The clinical course of newly diagnosed epilepsy is sparsely documented. The objective of this study was to prospectively investigate causes for seizures (epileptic and non-epileptic) in a cohort of dogs with new-onset untreated seizures, and for those dogs with newly diagnosed epilepsy to investigate epilepsy type, seizure type and the course of disease over time, including the risk of seizure recurrence...
February 16, 2017: BMC Veterinary Research
https://www.readbyqxmd.com/read/28188045/treatment-issues-for-children-with-epilepsy-transitioning-to-adult-care
#9
REVIEW
Rima Nabbout, Carol S Camfield, Danielle M Andrade, Alexis Arzimanoglou, Catherine Chiron, Joyce A Cramer, Jacqueline A French, Eric Kossoff, Marco Mula, Peter R Camfield
This is the third of three papers that summarize the second symposium on Transition in Epilepsies held in Paris in June 2016. This paper focuses on treatment issues that arise during the course of childhood epilepsy and make the process of transition to adult care more complicated. Some AEDs used during childhood, such as stiripentol, vigabatrin, and cannabidiol, are unfamiliar to adult epilepsy specialists. In addition, new drugs are being developed for treatment of specific childhood onset epilepsy syndromes and have no indication yet for adults...
February 7, 2017: Epilepsy & Behavior: E&B
https://www.readbyqxmd.com/read/28185967/intraoperative-ct-and-nexframe-guided-placement-of-bilateral-hippocampal-based-responsive-neurostimulation-a-technical-note
#10
Kunal Gupta, Jeffrey S Raskin, Ahmed M Raslan
INTRODUCTION: Surgical resection of a lesion that correlates with seizure onset in patients with epilepsy can dramatically improve seizure burden and quality of life. For bilateral hippocampal lesions, bilateral resection comes with a risk of severe cognitive deficits. Responsive neurostimulation (RNS) devices offers a new modality to treat multifocal lesions in a reversible manner, including bilateral hippocampal stimulation. We describe technical aspects of Nexframe-assisted placement of bilateral NeuroPace mesial temporal electrodes, and case examples...
February 6, 2017: World Neurosurgery
https://www.readbyqxmd.com/read/28183838/autoimmune-encephalitis-pathophysiology-and-imaging-review-of-an-overlooked-diagnosis
#11
REVIEW
B P Kelley, S C Patel, H L Marin, J J Corrigan, P D Mitsias, B Griffith
Autoimmune encephalitis is a relatively new category of immune-mediated disease involving the central nervous system that demonstrates a widely variable spectrum of clinical presentations, ranging from the relatively mild or insidious onset of cognitive impairment to more complex forms of encephalopathy with refractory seizure. Due to its diverse clinical features, which can mimic a variety of other pathologic processes, autoimmune encephalitis presents a diagnostic challenge to clinicians. Imaging findings in patients with these disorders can also be quite variable, but recognizing characteristic findings within limbic structures suggestive of autoimmune encephalitis can be a key step in alerting clinicians to the potential diagnosis and ensuring a prompt and appropriate clinical work-up...
February 9, 2017: AJNR. American Journal of Neuroradiology
https://www.readbyqxmd.com/read/28176298/what-does-the-u-s-medicare-administrative-claims-database-tell-us-about-initial-antiepileptic-drug-treatment-for-older-adults-with-new-onset-epilepsy
#12
Roy C Martin, Edward Faught, Jerzy P Szaflarski, Joshua Richman, Ellen Funkhouser, Kendra Piper, Lucia Juarez, Chen Dai, Maria Pisu
OBJECTIVE: Disparities in epilepsy treatment are not uncommon; therefore, we examined population-based estimates of initial antiepileptic drugs (AEDs) in new-onset epilepsy among racial/ethnic minority groups of older US Medicare beneficiaries. METHODS: We conducted retrospective analyses of 2008-2010 Medicare administrative claims for a 5% random sample of beneficiaries augmented for minority representation. New-onset epilepsy cases in 2009 had ≥1 International Classification of Diseases, Ninth Revision (ICD-9) 345...
February 7, 2017: Epilepsia
https://www.readbyqxmd.com/read/28168208/cortical-excitability-correlates-with-seizure-control-and-epilepsy-duration-in-chronic-epilepsy
#13
Adam D Pawley, Fahmida A Chowdhury, Chayanin Tangwiriyasakul, Bryan Ceronie, Robert D C Elwes, Lina Nashef, Mark P Richardson
OBJECTIVE: Cortical excitability differs between treatment responders and nonresponders in new-onset epilepsy. Moreover, during the first 3 years of epilepsy, cortical excitability becomes more abnormal in nonresponders but normalizes in responders. Here, we study chronic active epilepsy, to examine whether cortical excitability continues to evolve over time, in association with epilepsy duration and treatment response. METHODS: We studied 28 normal subjects, 28 patients with moderately controlled epilepsy (≤4 seizures per year) and 40 patients with poorly controlled epilepsy (≥20 or more seizures per year)...
February 2017: Annals of Clinical and Translational Neurology
https://www.readbyqxmd.com/read/28166369/heterozygous-truncation-mutations-of-the-smc1a-gene-cause-a-severe-early-onset-epilepsy-with-cluster-seizures-in-females-detailed-phenotyping-of-10-new-cases
#14
Joseph D Symonds, Shelagh Joss, Kay A Metcalfe, Suresh Somarathi, Jamie Cruden, Anita M Devlin, Alan Donaldson, Nataliya DiDonato, David Fitzpatrick, Frank J Kaiser, Anne K Lampe, Melissa M Lees, Ailsa McLellan, Tara Montgomery, Vivek Mundada, Lesley Nairn, Ajoy Sarkar, Jens Schallner, Jelena Pozojevic, Ilaria Parenti, Jeen Tan, Peter Turnpenny, William P Whitehouse, Sameer M Zuberi
OBJECTIVE: The phenotype of seizure clustering with febrile illnesses in infancy/early childhood is well recognized. To date the only genetic epilepsy consistently associated with this phenotype is PCDH19, an X-linked disorder restricted to females, and males with mosaicism. The SMC1A gene, which encodes a structural component of the cohesin complex is also located on the X chromosome. Missense variants and small in-frame deletions of SMC1A cause approximately 5% of Cornelia de Lange Syndrome (CdLS)...
February 6, 2017: Epilepsia
https://www.readbyqxmd.com/read/28166327/neurological-autoantibody-prevalence-in-epilepsy-of-unknown-etiology
#15
Divyanshu Dubey, Abdulradha Alqallaf, Ryan Hays, Matthew Freeman, Kevin Chen, Kan Ding, Mark Agostini, Steven Vernino
Importance: Autoimmune epilepsy is an underrecognized condition, and its true incidence is unknown. Identifying patients with an underlying autoimmune origin is critical because these patients' condition may remain refractory to conventional antiseizure medications but may respond to immunotherapy. Objective: To determine the prevalence of neurological autoantibodies (Abs) among adult patients with epilepsy of unknown etiology. Design, Setting, and Participants: Consecutive patients presenting to neurology services with new-onset epilepsy or established epilepsy of unknown etiology were identified...
February 6, 2017: JAMA Neurology
https://www.readbyqxmd.com/read/28163938/evaluating-complications-of-chronic-sinusitis
#16
Phillip Hong, Charles A Pereyra, Uta Guo, Adam Breslin, Laura Melville
Chronic sinusitis is a relatively common diagnosis throughout the US. In patients with an otherwise unremarkable medical history the treatment is typically supportive, requiring only clinical evaluation. We present the case of a 25-year-old male with a history of chronic sinusitis that was brought to our emergency department with new-onset seizure. Three days before he had presented to his usual care facility with two days of headache and fever and was discharged stating headache, subjective fever, and neck stiffness...
2017: Case Reports in Emergency Medicine
https://www.readbyqxmd.com/read/28153514/association-of-acute-toxic-encephalopathy-with-litchi-consumption-in-an-outbreak-in-muzaffarpur-india-2014-a-case-control-study
#17
Aakash Shrivastava, Anil Kumar, Jerry D Thomas, Kayla F Laserson, Gyan Bhushan, Melissa D Carter, Mala Chhabra, Veena Mittal, Shashi Khare, James J Sejvar, Mayank Dwivedi, Samantha L Isenberg, Rudolph Johnson, James L Pirkle, Jon D Sharer, Patricia L Hall, Rajesh Yadav, Anoop Velayudhan, Mohan Papanna, Pankaj Singh, D Somashekar, Arghya Pradhan, Kapil Goel, Rajesh Pandey, Mohan Kumar, Satish Kumar, Amit Chakrabarti, P Sivaperumal, A Ramesh Kumar, Joshua G Schier, Arthur Chang, Leigh Ann Graham, Thomas P Mathews, Darryl Johnson, Liza Valentin, Kathleen L Caldwell, Jeffery M Jarrett, Leslie A Harden, Gary R Takeoka, Suxiang Tong, Krista Queen, Clinton Paden, Anne Whitney, Dana L Haberling, Ram Singh, Ravi Shankar Singh, Kenneth C Earhart, A C Dhariwal, L S Chauhan, S Venkatesh, Padmini Srikantiah
BACKGROUND: Outbreaks of unexplained illness frequently remain under-investigated. In India, outbreaks of an acute neurological illness with high mortality among children occur annually in Muzaffarpur, the country's largest litchi cultivation region. In 2014, we aimed to investigate the cause and risk factors for this illness. METHODS: In this hospital-based surveillance and nested age-matched case-control study, we did laboratory investigations to assess potential infectious and non-infectious causes of this acute neurological illness...
January 30, 2017: Lancet Global Health
https://www.readbyqxmd.com/read/28141740/preventing-cognitive-impairment-in-children-with-epilepsy
#18
Kees P J Braun
PURPOSE OF REVIEW: Cognitive impairments are common in children with epilepsy. They may already be present before the onset of epilepsy or occur - and even progress - during its course. Many variables contribute to cognitive dysfunction. Those that can be targeted to prevent (further) cognitive impairment will be highlighted in this review. RECENT FINDINGS: Ideally, but not yet realistically, epileptogenesis is prevented to avert seizures and cognitive impairments in high-risk patients...
January 30, 2017: Current Opinion in Neurology
https://www.readbyqxmd.com/read/28141712/significant-sleep-dysregulation-in-a-toddler-with-developmental-delay
#19
Martin T Stein, Judith Owens, Myles Abbott
Derrick's parents made an appointment with a new pediatrician for a second opinion about disordered sleep. Now 22-months old, he was evaluated at 18 months of age for developmental delay when he was found to have "a regulatory disorder associated with delays in language and motor development, hypotonia and significant sleep problems." The parents are now most concerned about his sleeping pattern. Prolonged sleep onset and frequent night awaking occur each night since 6-months of age. These problems are more severe in the past few months when he awakes screaming and cannot be settled...
February 2017: Journal of Developmental and Behavioral Pediatrics: JDBP
https://www.readbyqxmd.com/read/28116196/a-rare-presentation-of-isolated-cns-posttransplantation-lymphoproliferative-disorder
#20
Jaime Morris, Casey Smith, Andrew Streicher, Allison Magnuson, Susan Newman, Robert Bertoli
Posttransplantation lymphoproliferative disorder (PTLD) is a recognized and extremely morbid complication of solid organ transplantation, but central nervous system involvement, particularly in isolation, is rare. There are no standardized treatment strategies for PTLD, though commonly used strategies include reduction of immunosuppression, chemotherapy, rituximab, radiation, and surgery. We present a case of an unusual morphologic variant of primary central nervous system PTLD with successful response to rituximab and cranial radiation...
2017: Case Reports in Oncological Medicine
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