Read by QxMD icon Read

Nonconvulsive status epilepticus

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
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
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
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)
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
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...
February 2, 2018: Epilepsy & Behavior: E&B
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
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)
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
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
Peter W Kaplan, Andrew Billnitzer, José Luis Fernández-Torre
PURPOSE: To acquaint readers with the underrecognized subacute encephalopathy with seizures in chronic alcoholics (SESA) that has more recently been associated with different types of status epilepticus. METHODS: Case reports and review of the literature on SESA and nonconvulsive status epilepticus (NCSE). RESULTS: Two cases: one with alternating bifrontoparietal NCSE, and one with focal, confusional NCSE, with imaging and EEG correlates. CONCLUSION: Underrecognized SESA may present as NCSE with focal clinical, EEG and reversible diffusion-weighted MRI abnormalities, warranting expedited diagnosis and antiseizure treatment to minimize morbidity...
December 1, 2017: Clinical EEG and Neuroscience: Official Journal of the EEG and Clinical Neuroscience Society (ENCS)
Jennifer A Creed, Jake Son, Alfredo E Farjat, Christa B Swisher
PURPOSE: Multiple antiepileptic drugs (AEDs) are often necessary to treat nonconvulsive seizures (NCS) and nonconvulsive status epilepticus (NCSE). AED polypharmacy places patients at risk for adverse side effects and drug-drug interactions. Identifying the likelihood of seizure relapse when weaning non-anesthetic AEDs may provide guidance in the critical care unit. METHOD: Ninety-nine adult patients with successful treatment of electrographic-proven NCS or NCSE on continuous critical care EEG (CCEEG) monitoring were identified retrospectively...
January 2018: Seizure: the Journal of the British Epilepsy Association
Nathália Stela Visoná de Figueiredo, Débora Bartzen Moraes Angst, Antônio de Matos Lima Neto, Michel Ferreira Machado, Maria Sheila Guimarães Rocha, Sônia Maria Dozzi Brucki
Although catatonia is a well-known psychiatric syndrome, there are many possible systemic and neurological etiologies. The aim of this case report was to present a case of a patient with cerebral venous sinus thrombosis and infarction in which catatonia was the clinical manifestation of a possible nonconvulsive status epilepticus. To our knowledge, only one such case has been reported in the literature, which had a simplified diagnostic investigation. It is important to correctly recognize the organic cause underlying catatonia in order to treat the patient as soon as possible thereby improving outcome...
April 2017: Dementia & Neuropsychologia
Boulenouar Mesraoua, Dirk Deleu, Hassan Al Hail, Faisal Ibrahim, Gayane Melikyan, Hassan Al Hussein, Rajvir Singh, Basim Uthman, Leopold Streletz, Peter W Kaplan, Heinz Gregor Wieser
Objective: This study reports the prevalence of Nonconvulsive Status Epilepticus (NCSE) in patients with altered mental status (AMS), and describes the clinical presentation, etiology, neurophysiological findings, neuroimaging, treatment, and outcome of NCSE in Qatar. Recording duration of continuous EEG monitoring was also discussed. Methods: This was a 3-year, prospective, hospital-based study involving patients with AMS and continuous EEG monitoring admitted to the Emergency and ICUs of Hamad Hospital, Qatar...
2017: Journal of Drug Assessment
Leonie Runtz, Benoit Girard, Marion Toussenot, Julie Espallergues, Alexis Fayd'Herbe De Maudave, Alexandre Milman, Frederic deBock, Chaitali Ghosh, Nathalie C Guérineau, Jean-Marc Pascussi, Federica Bertaso, Nicola Marchi
OBJECTIVE: Available evidence points to a role of cytochrome P450 (Cyp) drug biotransformation enzymes in central nervous system diseases, including epilepsy. Deviations in drug pharmacokinetic profiles may impact therapeutic outcomes. Here, we ask whether spontaneous recurrent seizure (SRS) activity is sufficient to modulate the expression of major Cyp enzymes in the liver and brain. METHODS: Unilateral intrahippocampal (IH) kainic acid (KA) injections were used to elicit nonconvulsive status epilepticus (SE), epileptogenesis, and SRS, as monitored by video-electroencephalography...
November 10, 2017: Epilepsia
Vinayaka Anuhya, Sushil Kiran Kunder, Sharath Madhyastha, Veena Nayak, Raviraja V Acharya, Kusugodlu Ramamoorthi, Avinash Arivazhahan, Rahul Sai Gangula
Cephalosporins are a commonly used class of antibiotics in various types of infections. Cefepime, a fourth-generation cephalosporin, has been reported to cause neurotoxicity, which can present itself as varied manifestations. Nonconvulsive status epilepticus (NCSE) is a rare manifestation of this neurotoxicity. This condition often proves difficult to diagnose because it is chiefly an electroencephalogram-based diagnosis. The authors report a case of cefepime-induced NCSE in a 57-year-old female patient with compromised renal status...
July 2017: Journal of Pharmacology & Pharmacotherapeutics
Ayesha A Appa, Rupali Jain, Robert M Rakita, Shahin Hakimian, Paul S Pottinger
Neurotoxicity due to cefepime has not been well characterized. We performed a systematic review of the literature and included 5 additional cases from our center. Of the 198 cases found, the mean age was 67 years and 87% of patients had renal dysfunction. The most common clinical features were diminished level of consciousness (80%), disorientation/agitation (47%), and myoclonus (40%). It is worth noting that nonconvulsive status epilepticus was relatively common with 31% of cases, whereas only 11% had convulsive seizures...
2017: Open Forum Infectious Diseases
Ewa Czapińska-Ciepiela
Numerous antibiotics may trigger epileptic seizures or status epilepticus by decreasing inhibitory transmission in the brain, thus lowering the seizure threshold. The most potent seizurogenic effect is exerted by penicillins, cephalosporins, fluorochinolons and carbapenems. Predisposing factors that facilitate development of epileptic seizures in the course of antibiotic therapy comprise all conditions accompanied by damage to the blood-brain barrier (including cerebral trauma and encephalitis), a high dose of an antibiotic or lack of adequate dose adjustment in patients with renal failure...
2017: Wiadomości Lekarskie: Organ Polskiego Towarzystwa Lekarskiego
José L Fernández-Torre, Alicia Paramio-Paz, Juan Carlos Rodríguez-Borregán, Pedro Orizaola, Pilar Bosque-Varela, Miguel A Hernández-Hernández
INTRODUCTION: Metaldehyde self-poisoning in adults is uncommon and, to the best of our knowledge, an episode of super-refractory nonconvulsive status epilepticus (sr-NCSE) following an suicide attempt has not been previously demonstrated. CASE REPORT: A 68-year-old woman was admitted to our Intensive Care Unit (ICU) in coma. On neurologic examination, the pupils were reactive, brainstem reflexes were present and plantar responses were flexor bilaterally. Routine laboratory tests were unremarkable...
October 13, 2017: Journal of Clinical Neuroscience: Official Journal of the Neurosurgical Society of Australasia
Masao Nagayama, Sunghoon Yang, Romergryko G Geocadin, Peter W Kaplan, Eisei Hoshiyama, Azusa Shiromaru-Sugimoto, Mitsuru Kawamura
Nonconvulsive status epilepticus (NCSE) has rapidly expanded from classical features such as staring, repetitive blinking, chewing, swallowing, and automatism to include coma, prolonged apnea, cardiac arrest, dementia, and higher brain dysfunction, which were demonstrated mainly after the 2000s by us and other groups. This review details novel clinical features of NCSE as a manifestation of epilepsy, but one that is underdiagnosed, with the best available evidence. Also, we describe the new concept of epilepsy-related organ dysfunction (Epi-ROD) and a novel electrode and headset which enables prompt electroencephalography...
2017: F1000Research
Fetch more papers »
Fetching more papers... Fetching...
Read by QxMD. Sign in or create an account to discover new knowledge that matter to you.
Remove bar
Read by QxMD icon Read

Search Tips

Use Boolean operators: AND/OR

diabetic AND foot
diabetes OR diabetic

Exclude a word using the 'minus' sign

Virchow -triad

Use Parentheses

water AND (cup OR glass)

Add an asterisk (*) at end of a word to include word stems

Neuro* will search for Neurology, Neuroscientist, Neurological, and so on

Use quotes to search for an exact phrase

"primary prevention of cancer"
(heart or cardiac or cardio*) AND arrest -"American Heart Association"