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https://www.readbyqxmd.com/read/28714130/nocturnal-seizures-are-associated-with-more-severe-hypoxemia-and-increased-risk-of-postictal-generalized-eeg-suppression
#1
Véronique Latreille, Myriam Abdennadher, Barbara A Dworetzky, Judith Ramel, David White, Eliot Katz, Marcin Zarowski, Sanjeev Kothare, Milena Pavlova
Patients with epilepsy have 20-fold risk of sudden death when compared to the general population. Uncontrolled seizures is the most consistent risk factor, and death often occurs at night or in relation to sleep. We examined seizure-related respiratory disturbances in sleep versus wakefulness, focusing on periictal oxygen saturation. Respiratory measures were examined in 48 recorded seizures (sleep, n = 23, wake, n = 25) from 20 adult patients with epilepsy. Seizures from sleep were associated with lower saturation, as compared to seizures from wakefulness, both during ictal (sleep median = 90...
July 17, 2017: Epilepsia
https://www.readbyqxmd.com/read/28701502/wrist-sensor-reveals-sympathetic-hyperactivity-and-hypoventilation-before-probable-sudep
#2
Rosalind W Picard, Matteo Migliorini, Chiara Caborni, Francesco Onorati, Giulia Regalia, Daniel Friedman, Orrin Devinsky
No abstract text is available yet for this article.
July 12, 2017: Neurology
https://www.readbyqxmd.com/read/28697420/familial-early-infantile-epileptic-encephalopathy-and-cardiac-conduction-disorder-a-rare-cause-of-sudep-in-infancy
#3
Dilsad Turkdogan, Sunay Usluer, Figen Akalin, Umut Agyuz, Elif Sibel Aslan
No abstract text is available yet for this article.
June 28, 2017: Seizure: the Journal of the British Epilepsy Association
https://www.readbyqxmd.com/read/28684957/practice-guideline-summary-sudden-unexpected-death-in-epilepsy-incidence-rates-and-risk-factors-report-of-the-guideline-development-dissemination-and-implementation-subcommittee-of-the-american-academy-of-neurology-and-the-american-epilepsy-society
#4
Cynthia Harden, Torbjörn Tomson, David Gloss, Jeffrey Buchhalter, J Helen Cross, Elizabeth Donner, Jacqueline A French, Anthony Gil-Nagel, Dale C Hesdorffer, W Henry Smithson, Mark C Spitz, Thaddeus S Walczak, Josemir W Sander, Philippe Ryvlin
OBJECTIVE: To determine the incidence rates of sudden unexpected death in epilepsy (SUDEP) in different epilepsy populations and address the question of whether risk factors for SUDEP have been identified. METHODS: Systematic review of evidence; modified Grading Recommendations Assessment, Development and Evaluation process for developing conclusions; recommendations developed by consensus. RESULTS: Findings for incidence rates based on 12 Class I studies include the following: SUDEP risk in children with epilepsy (aged 0-17 years) is 0...
May 2017: Epilepsy Currents
https://www.readbyqxmd.com/read/28683344/age-related-sleep-nocturnal-tonic-and-tonic-clonic-seizure-clusters-are-underdiagnosed-in-patients-with-dravet-syndrome
#5
Emma Losito, Matthieu Kuchenbuch, Nicole Chemaly, Jacques Laschet, Catherine Chiron, Anna Kaminska, Rima Nabbout
OBJECTIVES: To describe the semiology and EEG characteristics of the age-related pattern of sleep/nocturnal (S/N) seizures in patients with Dravet Syndrome (DS). METHODS: We retrospectively analysed the clinical and EEG data of DS patients followed at our reference centre for Rare Epilepsies. We included patients aged two years and older who fulfilled clinical and EEG criteria of DS (ILAE 1989). Genetic testing for SCN1A was done in all, followed by PCDH19 if this was negative...
July 3, 2017: Epilepsy & Behavior: E&B
https://www.readbyqxmd.com/read/28676574/aberrant-sodium-channel-currents-and-hyperexcitability-of-medial-entorhinal-cortex-neurons-in-a-mouse-model-of-scn8a-encephalopathy
#6
Matteo Ottolini, Bryan S Barker, Ronald P Gaykema, Miriam H Meisler, Manoj K Patel
SCN8A encephalopathy, or early infantile epileptic encephalopathy 13 (EIEE13), is caused predominantly by de novo gain-of-function mutations in the voltage-gated sodium (Na) channel Nav1.6. Affected individuals suffer from refractory seizures, developmental delay, cognitive disability and elevated risk of sudden unexpected death in epilepsy (SUDEP). A knock-in mouse model carrying the patient mutation p.Asn1768Asp (N1768D) reproduces many features of the disorder including spontaneous seizures and SUDEP. We used the mouse model to examine the effects of the mutation on layer II stellate neurons of the medial entorhinal cortex (mEC), which transmit excitatory input to the hippocampus...
July 4, 2017: Journal of Neuroscience: the Official Journal of the Society for Neuroscience
https://www.readbyqxmd.com/read/28649227/fish-oil-supplementation-reduces-heart-levels-of-interleukin-6-in-rats-with-chronic-inflammation-due-to-epilepsy
#7
Mariana Bocca Nejm, André Abou Haidar, Aparecida Emiko Hirata, Lila Missae Oyama, Antonio-Carlos Guimarães de Almeida, Roberta Monterazzo Cysneiros, Esper Abrão Cavalheiro, Carla Alessandra Scorza, Fulvio Alexandre Scorza
Sudden unexpected death in epilepsy (SUDEP) is a major cause of premature death related to epilepsy. The causes of SUDEP remain unknown, but cardiac arrhythmias and asphyxia have been suggested as a major mechanism of this event. Inflammation has been implicated in the pathogenesis of both epilepsy and ventricular arrhythmia, with interleukin-6 (IL-6) being recognized as a crucial orchestrator of inflammatory states. Our group previously reported that levels of IL-6 were increased in the hearts of epileptic rats...
2017: Frontiers in Neurology
https://www.readbyqxmd.com/read/28646692/specific-subcortical-structures-are-activated-during-seizure-induced-death-in-a-model-of-sudden-unexpected-death-in-epilepsy-sudep-a-manganese-enhanced-magnetic-resonance-imaging-study
#8
Srinivasa P Kommajosyula, Marcus E Randall, Thomas J Brozoski, Boris M Odintsov, Carl L Faingold
Sudden unexpected death in epilepsy (SUDEP) is a major concern for patients with epilepsy. In most witnessed cases of SUDEP generalized seizures and respiratory failure preceded death, and pre-mortem neuroimaging studies in SUDEP patients observed changes in specific subcortical structures. Our study examined the role of subcortical structures in the DBA/1 mouse model of SUDEP using manganese-enhanced magnetic resonance imaging (MEMRI). These mice exhibit acoustically-evoked generalized seizures leading to seizure-induced respiratory arrest (S-IRA) that results in sudden death unless resuscitation is rapidly instituted...
May 25, 2017: Epilepsy Research
https://www.readbyqxmd.com/read/28633090/pulmonary-and-cardiac-pathology-in-sudden-unexpected-death-in-epilepsy-sudep
#9
REVIEW
Fábio A Nascimento, Zian H Tseng, Cristian Palmiere, Joseph J Maleszewski, Takayuki Shiomi, Aileen McCrillis, Orrin Devinsky
OBJECTIVE: To review studies on structural pulmonary and cardiac changes in SUDEP cases as well as studies showing pulmonary or cardiac structural changes in living epilepsy patients. METHODS: We conducted electronic literature searches using the PubMed database for articles published in English, regardless of publication year, that included data on cardiac and/or pulmonary structural abnormalities in SUDEP cases or in living epilepsy patients during the postictal period...
June 17, 2017: Epilepsy & Behavior: E&B
https://www.readbyqxmd.com/read/28632329/postictal-hypoperfusion-hypoxia-provides-the-foundation-for-a-unified-theory-of-seizure-induced-brain-abnormalities-and-behavioral-dysfunction
#10
REVIEW
Jordan S Farrell, Roberto Colangeli, Marshal D Wolff, Alexandra K Wall, Thomas J Phillips, Antis George, Paolo Federico, G Campbell Teskey
A recent article by Farrell et al. characterizes the phenomenon, mechanisms, and treatment of a local and severe hypoperfusion/hypoxia event that occurs in brain regions following a focal seizure. Given the well-established role of cerebral ischemia/hypoxia in brain damage and behavioral dysfunction in other clinical settings (e.g., stroke, cerebral vasospasm), we put forward a new theory: postictal hypoperfusion/hypoxia is responsible for the negative consequences associated with seizures. Fortunately, inhibition of two separate molecular targets, cyclooxygenase-2 (COX-2) and l-type calcium channels, can prevent the expression of postictal hypoperfusion/hypoxia...
June 20, 2017: Epilepsia
https://www.readbyqxmd.com/read/28629685/sudden-death-in-epilepsy-knowledge-among-pediatric-providers
#11
Madison M Berl, Howard P Goodkin, Barbara L Kroner, Adrian Bumbut, Gardiner Lapham, William Davis Gaillard
A survey of 146 pediatric care providers (PCPs) revealed that 75.3% were unaware that children with epilepsy were at risk of death, specifically from sudden unexpected (or unexplained) death in epilepsy (SUDEP). PCPs assume that the treating neurologist discusses these risks. Increasing PCPs' knowledge of SUDEP will help address the care gap related to informing families about SUDEP.
June 16, 2017: Journal of Pediatrics
https://www.readbyqxmd.com/read/28605634/atomoxetine-a-norepinephrine-reuptake-inhibitor-reduces-seizure-induced-respiratory-arrest
#12
Honghai Zhang, Haiting Zhao, Hua-Jun Feng
Sudden unexpected death in epilepsy (SUDEP) is a devastating epilepsy complication, and no effective preventive strategies are currently available for this fatal disorder. Clinical and animal studies of SUDEP demonstrate that seizure-induced respiratory arrest (S-IRA) is the primary event leading to death after generalized seizures in many cases. Enhancing brain levels of serotonin reduces S-IRA in animal models relevant to SUDEP, including the DBA/1 mouse. Given that serotonin in the brain plays an important role in modulating respiration and arousal, these findings suggest that deficits in respiration and/or arousal may contribute to S-IRA...
June 9, 2017: Epilepsy & Behavior: E&B
https://www.readbyqxmd.com/read/28592455/the-incidence-of-sudep-a-nationwide-population-based-cohort-study
#13
Olafur Sveinsson, Tomas Andersson, Sofia Carlsson, Torbjörn Tomson
OBJECTIVE: To identify all cases of sudden unexpected death in epilepsy (SUDEP) among people in Sweden during 1 year and to determine the SUDEP incidence in relation to age, sex, and psychiatric comorbidity. METHODS: We included all individuals with a hospital-based ambulatory care or hospital discharge diagnosis of epilepsy in the Swedish National Patient Registry during 1998-2005 who were alive on January 1, 2008. Deaths during 2008 were identified by linkage to the National Cause of Death Registry...
July 11, 2017: Neurology
https://www.readbyqxmd.com/read/28592449/sudep-an-important-cause-of-premature-mortality-in-epilepsy-across-the-life-spectrum
#14
EDITORIAL
Jeffrey Buchhalter, Gregory D Cascino
No abstract text is available yet for this article.
July 11, 2017: Neurology
https://www.readbyqxmd.com/read/28576433/postictal-apnea-as-an-important-mechanism-for-sudep-a-near-sudep-with-continuous-eeg-ecg-emg-recording
#15
Lang Jin, Ying Zhang, Xiao-Li Wang, Wen-Juan Zhang, Yong-Hong Liu, Zhao Jiang
Sudden unexpected death in epilepsy (SUDEP) is one of the most frequent causes of death among patients with epilepsy. Most SUDEP or near-SUDEP are unwitnessed and not observed or recorded during video-EEG recording in epilepsy monitoring units. This report describes a young woman with post ictal apnea and generalized EEG suppression (PGES) after a secondary generalized tonic-clonic seizure (sGTCS). This was accompanied by bradycardia and then ventricular tachycardia (VT). But at the end of VT, the patient's breath recovered without any intervention, such as cardio-respiratory resuscitation...
May 30, 2017: Journal of Clinical Neuroscience: Official Journal of the Neurosurgical Society of Australasia
https://www.readbyqxmd.com/read/28572789/impaired-baroreflex-sensitivity-after-bilateral-convulsive-seizures-in-patients-with-focal-epilepsy
#16
Kevin G Hampel, Christian E Elger, Rainer Surges
BACKGROUND: Sudden unexpected death in epilepsy (SUDEP) is probably due to an autonomic failure in the early postictal phase after bilateral convulsive seizures (BCS) in the majority of cases. The baroreflex sensitivity (BRS) is an established and reliable biomarker of autonomic function and sudden cardiac death. OBJECTIVE: To investigate whether postictal BRS depends on seizure type. METHODS: Beat-to-beat systemic blood pressure and heart rate were continuously and non-invasively recorded with the ccNexfin(®) device in patients with focal epilepsy undergoing video-EEG monitoring...
2017: Frontiers in Neurology
https://www.readbyqxmd.com/read/28555759/postictal-generalized-eeg-suppression-and-respiratory-dysfunction-following-generalized-tonic-clonic-seizures-in-sleep-and-wakefulness
#17
Weifeng Peng, Jessica L Danison, Masud Seyal
OBJECTIVE: Sudden unexpected death in epilepsy (SUDEP) is a common cause of death in epilepsy and frequently occurs following generalized tonic-clonic seizures (GTCS) in sleep. Postictal generalized electroencephalography (EEG) suppression (PGES), postictal immobility, and periictal respiratory dysfunction are potential risk factors for SUDEP. We sought to determine whether there was a difference in respiratory dysfunction, PGES, and postictal immobility for GTCS occurring during wakefulness or sleep...
May 28, 2017: Epilepsia
https://www.readbyqxmd.com/read/28549245/analysis-of-heart-rate-variability-and-risk-factors-for-sudep-in-patients-with-drug-resistant-epilepsy
#18
Leyla Baysal-Kirac, Nail Güven Serbest, Erdi Şahin, Hava Özlem Dede, Candan Gürses, Ayşen Gökyiğit, Nerses Bebek, Ahmet Kaya Bilge, Betül Baykan
BACKGROUND: Cardiac problems have been suggested as causes of sudden unexpected death in epilepsy (SUDEP). Our aim was to investigate possible associations of cardiac autonomic functions based on heart rate variability (HRV) parameters with risk factors of SUDEP in patients with drug-resistant epilepsy. METHODS: Forty-seven patients with drug-resistant seizures and 45 healthy control subjects were enrolled in the study. Interictal time domain parameters of HRV were evaluated with 24-hour Holter recordings...
June 2017: Epilepsy & Behavior: E&B
https://www.readbyqxmd.com/read/28464295/obstructive-apnea-due-to-laryngospasm-links-ictal-to-postictal-events-in-sudep-cases-and-offers-practical-biomarkers-for-review-of-past-cases-and-prevention-of-new-ones
#19
Mark Stewart, Richard Kollmar, Ko Nakase, Joshua Silverman, Krishnamurthi Sundaram, Rena Orman, Jason Lazar
Seizure spread into autonomic and respiratory brainstem regions is thought to play an important role in sudden unexpected death in epilepsy (SUDEP). As the clinical dataset of cases of definite SUDEP available for study grows, evidence points to a sequence of events that includes postictal apnea, bradycardia, and asystole as critical events that can lead to death. One possible link between the precipitating seizure and the critical postictal sequence is seizure-driven laryngospasm sufficient to completely obstruct the airway for an extended period, but ictal laryngospasm is difficult to fully assess...
June 2017: Epilepsia
https://www.readbyqxmd.com/read/28460334/maximal-exhaustive-treadmill-test-features-in-patients-with-temporal-lobe-epilepsy-search-for-sudden-unexpected-death-biomarkers
#20
Guilherme L Fialho, Arthur G Pagani, Roger Walz, Peter Wolf, Katia Lin
Autonomic dysfunction may account for sudden unexpected death in patients with epilepsy (PWE). On the other hand, low cardiovascular fitness, which may affect autonomic function, is a risk factor for sudden death and all-cause mortality in the general population. Little is known about autonomic variables and cardiovascular response to exercise in PWE. We submitted thirty consecutive PWE with no known cardiovascular diseases to maximal treadmill test, comparing them with matched controls. All individuals were submitted to clinical assessment, 12-lead electrocardiogram (ECG) and echocardiogram to exclude cardiovascular disease...
April 24, 2017: Epilepsy Research
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