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Nonconvulsive status epilepticus

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https://www.readbyqxmd.com/read/29758445/intravenous-lacosamide-lcm-in-status-epilepticus-se-weight-adjusted-dose-and-efficacy
#1
Estevo Santamarina, Montserrat González-Cuevas, Manuel Toledo, Marta Jiménez, Juan Luis Becerra, Alex Quílez, Ana Suller, J A Mauri, Ángel Fernández, Ainhoa Marinas, Manuel Quintana, Xavier Salas Puig
BACKGROUND: Some studies suggest higher efficacy of lacosamide (LCM) in status epilepticus (SE) with higher loading doses; however, this weight-adjusted dose has not been evaluated. OBJECTIVE: The objective was to evaluate the relationship between loading weight-adjusted dose and efficacy of LCM in SE. METHODS: A group of patients with SE treated with LCM from Spanish hospitals was examined retrospectively. Demographic data, type of SE, etiology, response rate, last antiepileptic drug (AED) used, treatment line in which LCM was used, total loading dose, and weight-adjusted dose were collected...
May 11, 2018: Epilepsy & Behavior: E&B
https://www.readbyqxmd.com/read/29718829/generalized-periodic-discharges-a-topical-review
#2
Krystal E Sully, Aatif M Husain
Generalized periodic discharges (GPDs) are generalized discharges that recur with a relatively uniform morphology and duration. They have a quantifiable interdischarge interval. Over the past decade, our understanding of these waveforms has improved considerably. The nomenclature has changed, and etiologic references have been removed. Many disease states can cause GPDs, such as anoxia, toxic/metabolic encephalopathy, infections, nonconvulsive status epilepticus, and hypothermia. Generally, GPDs are morphologically similar regardless of etiology...
May 2018: Journal of Clinical Neurophysiology: Official Publication of the American Electroencephalographic Society
https://www.readbyqxmd.com/read/29666711/creutzfeldt-jakob-disease-presenting-as-expressive-aphasia-and-nonconvulsive-status-epilepticus
#3
Hafiz B Mahboob, Kazi H Kaokaf, Jeremy M Gonda
Creutzfeldt-Jakob disease (CJD), the most common form of human prion diseases, is a fatal condition with a mortality rate reaching 85% within one year of clinical presentation. CJD is characterized by rapidly progressive neurological deterioration in combination with typical electroencephalography (EEG) and magnetic resonance imaging (MRI) findings and positive cerebrospinal spinal fluid (CSF) analysis for 14-3-3 proteins. Unfortunately, CJD can have atypical clinical and radiological presentation in approximately 10% of cases, thus making the diagnosis often challenging...
2018: Case Reports in Critical Care
https://www.readbyqxmd.com/read/29660507/does-semiology-of-status-epilepticus-have-an-impact-on-treatment-response-and-outcome
#4
Leyla Baysal-Kirac, Berend Feddersen, Marion Einhellig, Jan Rémi, Soheyl Noachtar
OBJECTIVE: This study investigated whether there is an association between semiology of status epilepticus (SE) and response to treatment and outcome. METHOD: Two hundred ninety-eight consecutive adult patients (160 females, 138 males) with SE at the University of Munich Hospital were prospectively enrolled. Mean age was 63.2±17.5 (18-97) years. Patient demographics, SE semiology and electroencephalography (EEG) findings, etiology, duration of SE, treatment, and outcome measures were investigated...
April 13, 2018: Epilepsy & Behavior: E&B
https://www.readbyqxmd.com/read/29600511/increased-cerebral-blood-flow-on-arterial-spin-labeling-magnetic-resonance-imaging-can-localize-to-seizure-focus-in-newborns-a-report-of-3-cases
#5
Patrick Mabray, Rapeepat Thewamit, Matthew T Whitehead, Amy Kao, Joseph Scafidi, William D Gaillard, Taeun Chang, Tammy N Tsuchida
Arterial spin labeling (ASL) magnetic resonance imaging (MRI) can assess cerebral blood flow (CBF) without using radiolabeled tracers. It is unknown whether regional increases in CBF on ASL MRI correlate with seizure location in newborns. We report 3 newborns with focal seizures localized on continuous video electroencephalogram (cEEG), anatomical brain MRI, and ASL MRI. Each patient underwent pseudocontinuous ASL with segmented 3-dimensional fast spin echo readout as part of standard care. Case 1 is a term male infant presenting with left temporal status epilepticus and recurrent cEEG seizures from an idiopathic large left intraventricular hemorrhage...
March 30, 2018: Epilepsia
https://www.readbyqxmd.com/read/29597185/diazepam-for-outpatient-treatment-of-nonconvulsive-status-epilepticus-in-pediatric-patients-with-angelman-syndrome
#6
Lila Worden, Olivia Grocott, Amanda Tourjee, Fonda Chan, Ronald Thibert
Nonconvulsive status epilepticus (NCSE) is present in multiple pediatric neurogenetic syndromes with epileptic encephalopathies. While intravenous (IV) medications are used inpatient for treatment of critical illness-related NCSE, there is no consensus on treatment of ambulatory NCSE. Up to 50% of patients with Angelman syndrome (AS) have NCSE with myoclonic or atypical absence status. Here we report our experience in pediatric patients with AS and NCSE treated outpatient with a tapering course of oral diazepam...
March 26, 2018: Epilepsy & Behavior: E&B
https://www.readbyqxmd.com/read/29588978/topography-of-generalized-periodic-epileptiform-discharges-in-postanoxic-nonconvulsive-status-epilepticus
#7
Dimitris Fotis Sakellariou, George Kostantinos Kostopoulos, Mark Philip Richardson, Michalis Koutroumanidis
We studied slow (≤2.5 Hz) nonevolving generalized periodic epileptiform discharges (GPEDs) in the electroencephalogram (EEG) of comatose patients after cardiac arrest (CA) in search of evidence that could assist early diagnosis of possible hypoxic nonconvulsive status epilepticus (NCSE) and its differentiation from terminal brain anoxia (BA), which can present with a similar EEG pattern. We investigated the topography of the GPEDs in the first post-CA EEGs of 13 patients, using voltage-mapping, and compared findings between two patients with NCSE and GPEDs > 2...
December 2017: Epilepsia Open
https://www.readbyqxmd.com/read/29588947/the-intrahippocampal-kainate-mouse-model-of-mesial-temporal-lobe-epilepsy-lack-of-electrographic-seizure-like-events-in-sham-controls
#8
Friederike Twele, Alina Schidlitzki, Kathrin Töllner, Wolfgang Löscher
Objective: There is an ongoing debate about definition of seizures in experimental models of acquired epilepsy and how important adequate sham controls are in this respect. For instance, several mouse and rat strains exhibit high-voltage rhythmic spike or spike-wave discharges in the cortical electroencephalogram (EEG), which has to be considered when using such strains for induction of epilepsy by status epilepticus, traumatic brain injury, or other means. Mice developing spontaneous recurrent nonconvulsive and convulsive seizures after intrahippocampal injection of kainate are increasingly being used as a model of mesial temporal lobe epilepsy...
June 2017: Epilepsia Open
https://www.readbyqxmd.com/read/29587188/nonconvulsive-status-epilepticus-after-cessation-of-convulsive-status-epilepticus-in-pediatric-intensive-care-unit-patients
#9
Jin Chen, Lingling Xie, Yue Hu, Xinghui Lan, Li Jiang
Little is known about pediatric patients suffering from nonconvulsive status epilepticus (NCSE) after convulsive status epilepticus (CSE) cessation. The aim of this study was to identify in pediatric patients the clinical characteristics of NCSE after CSE cessation and the factors that contribute to patient outcomes. Data from clinical features, electroencephalography (EEG) characteristics, neuroimaging findings, treatments, and prognosis were systematically summarized, and the associations between clinical characteristics and prognosis were quantified...
March 24, 2018: Epilepsy & Behavior: E&B
https://www.readbyqxmd.com/read/29574298/the-relevance-of-timing-in-nonconvulsive-status-epilepticus-a-series-of-38-cases
#10
Álvaro Gutiérrez-Viedma, Beatriz Parejo-Carbonell, María-Luz Cuadrado, Irene Serrano-García, Belén Abarrategui, Irene García-Morales
BACKGROUND: Timing in the management of nonconvulsive status epilepticus (NCSE) seems to be one of the most important modifiable prognostic factors. We aimed to determine the precise relationship between timing in NCSE management and its outcome. METHODS: We performed a cross-sectional study in which clinical data were prospectively obtained from all consecutive adults with NCSE admitted to our hospital from 2014 to 2016. Univariate and multivariable regression analyses were performed to identify clinical and timing variables associated with NCSE prognosis...
March 22, 2018: Epilepsy & Behavior: E&B
https://www.readbyqxmd.com/read/29558565/detecting-silent-seizures-by-their-sound
#11
Josef Parvizi, Kapil Gururangan, Babak Razavi, Chris Chafe
OBJECTIVE: The traditional approach to interpreting electroencephalograms (EEGs) requires physicians with formal training to visually assess the waveforms. This approach can be less practical in critical settings where a trained EEG specialist is not readily available to review the EEG and diagnose ongoing subclinical seizures, such as nonconvulsive status epilepticus. METHODS: We have developed a novel method by which EEG data are converted to sound in real time by letting the underlying electrophysiological signal modulate a voice tone that is in the audible range...
March 20, 2018: Epilepsia
https://www.readbyqxmd.com/read/29555354/nonconvulsive-status-epilepticus-after-convulsive-status-epilepticus-clinical-features-outcomes-and-prognostic-factors
#12
Fang Yuan, Fang Yang, Wen Li, Xiai Yang, Qiong Gao, Lijie Bi, Yongli Jiang, Wen Jiang
OBJECTIVES: To investigate clinical characteristics and outcomes of nonconvulsive status epilepticus (NCSE) after convulsive status epilepticus (CSE) and determine risk factors for unfavorable outcomes. METHODS: We reviewed consecutive patients with NCSE after CSE over eight years in the neurological intensive care unit. Clinical presentations and the Salzburg EEG criteria for NCSE were used to identify patients with NCSE after CSE. Demographics, clinical features, and anti-epileptic treatment responses were collected and analyzed...
March 12, 2018: Epilepsy Research
https://www.readbyqxmd.com/read/29456482/ring-chromosome-17-not-involving-the-miller-dieker-region-a-case-with-drug-resistant-epilepsy
#13
Antonietta Coppola, Deborah Morrogh, Fiona Farrell, Simona Balestrini, Laura Hernandez-Hernandez, S Krithika, Josemir W Sander, Jonathan J Waters, Sanjay M Sisodiya
Chromosomal abnormalities are often identified in people with neurodevelopmental disorders including intellectual disability, autism, and epilepsy. Ring chromosomes, which usually involve gene copy number loss, are formed by fusion of subtelomeric or telomeric chromosomal regions. Some ring chromosomes, including ring 14, 17, and 20, are strongly associated with seizure disorders. We report an individual with a ring chromosome 17, r(17)(p13.3q25.3), with a terminal 17q25.3 deletion and no short arm copy number loss, and with a phenotype characterized by intellectual disability and drug-resistant epilepsy, including a propensity for nonconvulsive status epilepticus...
December 2017: Molecular Syndromology
https://www.readbyqxmd.com/read/29443785/can-endotracheal-intubation-be-the-first-step-in-management-of-nonconvulsive-status-epilepticus-a-case-report
#14
Saad Warraich, Abbas Ali, Atif Nizami, Moiz Bakhiet
RATIONALE: Nonconvulsive status epilepticus (NCSE) is prolonged seizure activity without motor manifestations. Clinically, there are certain examination findings, in addition to elements of history, that help differentiate it from other encephalopathies. When diagnosing NCSE, the physician faces significant difficulties due to inconsistent clinical presentation and somewhat nonspecific electroencephalogram (EEG) criteria. PATIENT CONCERNS: To highlight the problems faced when dealing with such a patient, a case of a 29-year-old male who presented with an altered state of consciousness is put forth for the reader...
February 2018: Medicine (Baltimore)
https://www.readbyqxmd.com/read/29442558/progression-of-convulsive-and-nonconvulsive-seizures-during-epileptogenesis-after-pilocarpine-induced-status-epilepticus
#15
Zachariah Z Smith, Alexander M Benison, Florencia M Bercum, F Edward Dudek, Daniel S Barth
Although convulsive seizures occurring during pilocarpine-induced epileptogenesis have received considerable attention, nonconvulsive seizures have not been closely examined, even though they may reflect the earliest signs of epileptogenesis and potentially guide research on antiepileptogenic interventions. The definition of nonconvulsive seizures based on brain electrical activity alone has been controversial. Here, we define and quantify electrographic properties of convulsive and nonconvulsive seizures in the context of the acquired epileptogenesis that occurs after pilocarpine-induced status epilepticus (SE)...
February 14, 2018: Journal of Neurophysiology
https://www.readbyqxmd.com/read/29414555/specificity-of-electroclinical-features-in-the-diagnosis-of-ring-chromosome-20
#16
A B Gago-Veiga, R Toledano, I García-Morales, M A Pérez-Jiménez, J Bernar, A Gil-Nagel
BACKGROUND: Ring chromosome 20 (R20) syndrome is a chromosomal disorder characterized mainly by drug-resistant frontal lobe seizures, recurrent nonconvulsive status epilepticus (NCSE), and typical EEG features. The aim of this study was to investigate if this triad is common and specific to all patients with R20. METHODS: In this cross-sectional study (from 2000 to 2011), we selected patients who fulfilled at least two out of three criteria: drug-resistant frontal lobe seizures, recurrent NCSE, and characteristic electroencephalography (EEG) features...
March 2018: Epilepsy & Behavior: E&B
https://www.readbyqxmd.com/read/29344469/successful-use-of-therapeutic-hypothermia-for-refractory-nonconvulsive-status-epilepticus
#17
Do-Hyung Kim, Hye-Hoon Kang, Minjung Kim, Tae-Won Yang, Oh-Young Kwon, Jung Sook Yeom, Bong Su Kang, Yong Hwan Kim, Young-Soo Kim
Therapeutic hypothermia (TH) has rarely been utilized as an adjunct to anticonvulsants in treating patients with refractory convulsive status epilepticus (CSE). However, determining the effectiveness of TH in CSE is difficult due to the unavoidable use of sedative drugs to manage hypothermia. Additionally, the effectiveness of TH has not been studied in patients with refractory non-convulsive status epilepticus (NCSE). Here, we report the successful use of TH without additional sedative drugs in a patient with temporal lobe epilepsy and refractory NCSE...
December 2017: Journal of Epilepsy Research
https://www.readbyqxmd.com/read/29322820/reevaluation-of-the-critically-ill-patients-with-nonconvulsive-status-epilepticus-by-using-salzburg-consensus-criteria
#18
Ozlem Gungor Tuncer, Ebru Altindag, Sevda Ozel Yildiz, Mecbure Nalbantoglu, Mehmet Eren Acik, Sedef Tavukcu Ozkan, Betul Baykan
OBJECTIVE: We aimed to assess the usefulness of the Salzburg Consensus Criteria (SCC) for determining the prognosis of critically ill patients with nonconvulsive status epilepticus (NCSE). METHODS: We retrospectively reviewed consecutive patients with unconsciousness followed up in the intensive care unit (ICU). Three clinical neurophysiologists, one of them blinded to clinical and laboratory data, reevaluated all EEG data independently and determined NCSE according to SCC...
January 1, 2018: Clinical EEG and Neuroscience: Official Journal of the EEG and Clinical Neuroscience Society (ENCS)
https://www.readbyqxmd.com/read/29296085/epilepsy-in-patients-with-autism-links-risks-and-treatment-challenges
#19
REVIEW
Frank Mc Besag
Autism is more common in people with epilepsy, approximately 20%, and epilepsy is more common in people with autism with reported rates of approximately 20%. However, these figures are likely to be affected by the current broader criteria for autism spectrum disorder (ASD), which have contributed to an increased prevalence of autism, with the result that the rate for ASD in epilepsy is likely to be higher and the figure for epilepsy in ASD is likely to be lower. Some evidence suggests that there are two peaks of epilepsy onset in autism, in infancy and adolescence...
2018: Neuropsychiatric Disease and Treatment
https://www.readbyqxmd.com/read/29262437/ictal-interictal-continuum-when-to-worry-about-the-continuous-electroencephalography-pattern
#20
Justine Cormier, Carolina B Maciel, Emily J Gilmore
Continuous electroencephalography (cEEG) monitoring is an invaluable tool in the evaluation of encephalopathy and coma in critically ill patients. Marked increases in cEEG monitoring, coinciding with several societal guideline statements in the last decade, have allowed earlier detection and treatment of clearly harmful patterns, including nonconvulsive seizures (NCSz) and nonconvulsive status epilepticus (NCSE). However, it has also unmasked a range of EEG patterns of less clear clinical significance, with some more "malignant" than others given their potential association with increased neuronal stress and secondary brain injury...
December 2017: Seminars in Respiratory and Critical Care Medicine
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