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Autonomic seizure

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https://www.readbyqxmd.com/read/29214651/electroencephalography-and-behavior-patterns-during-experimental-status-epilepticus
#1
Ewa Lewczuk, Suchitra Joshi, John Williamson, Mouna Penmetsa, Sarah Shan, Jaideep Kapur
OBJECTIVE: To characterize the evolution of behavioral and electrographic seizures in an experimental electrical stimulation-based model of status epilepticus (SE) in C57Bl/6 mice, and to relate SE to various outcomes, including death and epileptogenesis. METHODS: SE was induced by continuous hippocampal stimulation and was evaluated by review of electroencephalographic recordings, spectral display, and behavior. RESULTS: Seizures were initially locked to the electrical trains but later became independent of them...
December 6, 2017: Epilepsia
https://www.readbyqxmd.com/read/29183618/encephalitis-associated-with-antibodies-against-the-nmda-receptor
#2
REVIEW
Mar Guasp, Josep Dalmau
The encephalitis associated with antibodies against the N-methyl-D-aspartate receptor (NMDAR) is characterized by the presence of antibodies against the GluN1 subunit of this receptor, resulting in symptoms that are similar to those observed in models of genetic or pharmacologic reduction of NMDARs. Patients are usually young adults, predominantly women, and children who develop, in a sequential manner, rapidly progressive symptoms including psychosis, abnormal movements, autonomic dysfunction, and coma. Epileptic seizures are variable and can occur throughout the course of the disease...
November 25, 2017: Medicina Clínica
https://www.readbyqxmd.com/read/29171405/seizure-semiology-of-anti-lgi1-antibody-encephalitis
#3
Nicholas J Beimer, Linda M Selwa
Limbic encephalitis associated with anti-LGI1 antibody (LGI1 encephalitis) presents with a variety of features, the most prominent of which include seizures and progressive disturbance of memory and behaviour. Although varied in semiology, recognition of the pattern of seizures in LGI1 encephalitis is important, as early diagnosis and definitive treatment may prevent subsequent development of cognitive impairment. We present a patient with LGI1 encephalitis and "faciobrachial dystonic seizures-plus", which began as classic faciobrachial dystonic seizures and progressed to focal seizures with impaired awareness, dacrystic/gelastic-like outbursts, ictal speech, manual automatisms, and autonomic signs (tachycardia)...
November 24, 2017: Epileptic Disorders: International Epilepsy Journal with Videotape
https://www.readbyqxmd.com/read/29153996/clinical-presentation-of-anti-n-methyl-d-aspartate-receptor-and-anti-voltage-gated-potassium-channel-complex-antibodies-in-children-a-series-of-24-cases
#4
Bahadir Konuskan, Mirac Yildirim, Haluk Topaloglu, Ilknur Erol, Ulkuhan Oztoprak, Huseyin Tan, Rahsan Gocmen, Banu Anlar
OBJECTIVE: The symptomatology and paraclinical findings of antibody-mediated encephalitis, a relatively novel disorder, are still being characterized in adults and children. A high index of suspicion is needed in order to identify these cases among children presenting with various neurological symptoms. The aim of this study is to examine the clinical, demographic and laboratory findings and outcome of children with anti-NMDAR and anti-VGKC encephalitis for any typical or distinctive features...
November 7, 2017: European Journal of Paediatric Neurology: EJPN
https://www.readbyqxmd.com/read/29138603/fatal-collapse-due-to-autonomic-dysreflexia-during-manual-self-evacuation-of-bowel-in-a-tetraplegic-patient-living-alone-lessons-to-learn
#5
Subramanian Vaidyanathan, Bakul M Soni, Paul Mansour, Tun Oo
Background: To identify areas for improvement, the National Health Service in England mandates the review of case reports of patients who have died, which should be translated into improved care for other patients. Case report: A 49-year-old Caucasian man sustained C-7 tetraplegia in a motorcycle accident in 1992. In 2009, he developed seizures and collapsed in the lavatory on a number of occasions during manual self-evacuation of his bowel. A 24-hour electrocardiogram recording at that time showed sinus rhythm with a maximum heart rate of 97 and a minimum of 39 beats per minute; there were no significant arrhythmias that could have contributed to his episodes of collapse...
2017: International Medical Case Reports Journal
https://www.readbyqxmd.com/read/29116659/type-1-astrocyte-like-stem-cells-harboring-cacna1d-gene-deletion-exhibit-reduced-proliferation-and-decreased-neuronal-fate-choice
#6
Bianca Völkening, Kai Schönig, Golo Kronenberg, Dusan Bartsch, Tillmann Weber
In the central nervous system, CaV 1.2 and CaV 1. 3 constitute the main L-type voltage-gated calcium channels (LTCCs) coupling membrane depolarization to gene transcription. We have previously demonstrated that inducible disruption of Cav1.2 in type-1 astrocyte-like stem cells of the adult dentate gyrus (DG) impairs hippocampal neurogenesis in a cell-autonomous fashion. To address the role of Cav1.3 channels (encoded by the Cacna1d gene), we here generated Tg(GLAST-CreERT2) /Cacna1d(fl/fl) /RCE:loxP mice which facilitate inducible deletion of Cacna1d in tandem with induction of EGFP expression in type-1 cells, allowing tracking of recombined cells and their descendants...
November 8, 2017: Hippocampus
https://www.readbyqxmd.com/read/29051738/early-seizure-detection-based-on-cardiac-autonomic-regulation-dynamics
#7
Jonatas Pavei, Renan G Heinzen, Barbora Novakova, Roger Walz, Andrey J Serra, Markus Reuber, Athi Ponnusamy, Jefferson L B Marques
Epilepsy is a neurological disorder that causes changes in the autonomic nervous system. Heart rate variability (HRV) reflects the regulation of cardiac activity and autonomic nervous system tone. The early detection of epileptic seizures could foster the use of new treatment approaches. This study presents a new methodology for the prediction of epileptic seizures using HRV signals. Eigendecomposition of HRV parameter covariance matrices was used to create an input for a support vector machine (SVM)-based classifier...
2017: Frontiers in Physiology
https://www.readbyqxmd.com/read/29050165/-ovarian-tumor-associated-with-anti-n-methyl-d-aspartate-receptor-encephalitis-a-report-of-15-cases
#8
X M Li, H Y Jiang, Y F Wang, W Qiu, Y Wang, H T Wu
Objective: To summarize the clinical features of patients with ovarian tumor and anti-N-methyl-D-aspartate receptor(NMDAR) encephalitis, and to explore the influence of operation patterns on the prognosis. Methods: The clinical information of patients with ovarian tumor and anti-NMDAR encephalitis in The 3rd Affiliated Hospital of Sun Yat-Sen University and The Zhujiang Hospital of Southern Medical University were collected and analyzed. Results: There were 15 patients were enrolled in this study, with the average age of 24...
October 10, 2017: Zhonghua Yi Xue za Zhi [Chinese medical journal]
https://www.readbyqxmd.com/read/29042524/-autoimmune-and-epilepsy
#9
Riki Matsumoto, Mitsuhiro Sakamoto, Akio Ikeda
The recent discovery of autoimmune antibodies to the neuronal cell surface membrane and extra- or intra-cellular proteins, such as NMDAR and LGI1, shed light on a proposed new etiology of epilepsy, namely, "autoimmune epilepsy". A large part of this entity most likely belongs to a forme fruste of autoimmune (limbic) encephalitis. Seizures are usually subacute in onset and refractory to antiepileptic medications. Patients occasionally manifest multiple seizure semiologies, such as autonomic or faciobrachial dystonic seizures...
October 2017: Brain and Nerve, Shinkei Kenkyū No Shinpo
https://www.readbyqxmd.com/read/29037447/a-quinidine-non-responsive-novel-kcnt1-mutation-in-an-indian-infant-with-epilepsy-of-infancy-with-migrating-focal-seizures
#10
Priyanka Madaan, Prashant Jauhari, Aparajita Gupta, Biswaroop Chakrabarty, Sheffali Gulati
Epilepsy of infancy with migrating focal seizures {a.k.a malignant migrating partial seizures of infancy (MMPSI)} is an uncommon epileptic encephalopathy with a poor prognosis. Migrating focal seizures with autonomic features, developmental stagnation and refractoriness to treatment are its key features. It is caused by genetic defects in various ion channels, most common being sodium activated potassium channel (KCNT1), found in up to 50% of cases. With advent of genetic diagnosis and precision medicine, many targeted therapies have been identified...
October 13, 2017: Brain & Development
https://www.readbyqxmd.com/read/28982531/parental-perception-of-comorbidities-in-children-with-dravet-syndrome
#11
Kelly G Knupp, Sharon Scarbro, Greta Wilkening, Elizabeth Juarez-Colunga, Allison Kempe, Amanda Dempsey
BACKGROUND: We hypothesized that children with Dravet syndrome may have additional common features beyond seizures and cognitive impairment. To address this gap in knowledge, we conducted a survey of caregivers of children with Dravet syndrome to identify and quantify their perception of associated symptoms in this population. METHODS: An electronic survey was developed in REDcap (Research Electronic Data Capture) and sent via e-mail to the participants on the Dravet Syndrome Foundation e-mail list...
June 20, 2017: Pediatric Neurology
https://www.readbyqxmd.com/read/28982217/yoga-for-epilepsy
#12
REVIEW
Mariangela Panebianco, Kalpana Sridharan, Sridharan Ramaratnam
BACKGROUND: This is an updated version of the original Cochrane Review published in the Cochrane Library, Issue 5, 2015.Yoga may induce relaxation and stress reduction, and influence the electroencephalogram and the autonomic nervous system, thereby controlling seizures. Yoga would be an attractive therapeutic option for epilepsy if proved effective. OBJECTIVES: To assess whether people with epilepsy treated with yoga:(a) have a greater probability of becoming seizure free;(b) have a significant reduction in the frequency or duration of seizures, or both; and(c) have a better quality of life...
October 5, 2017: Cochrane Database of Systematic Reviews
https://www.readbyqxmd.com/read/28980315/multicenter-clinical-assessment-of-improved-wearable-multimodal-convulsive-seizure-detectors
#13
MULTICENTER STUDY
Francesco Onorati, Giulia Regalia, Chiara Caborni, Matteo Migliorini, Daniel Bender, Ming-Zher Poh, Cherise Frazier, Eliana Kovitch Thropp, Elizabeth D Mynatt, Jonathan Bidwell, Roberto Mai, W Curt LaFrance, Andrew S Blum, Daniel Friedman, Tobias Loddenkemper, Fatemeh Mohammadpour-Touserkani, Claus Reinsberger, Simone Tognetti, Rosalind W Picard
OBJECTIVE: New devices are needed for monitoring seizures, especially those associated with sudden unexpected death in epilepsy (SUDEP). They must be unobtrusive and automated, and provide false alarm rates (FARs) bearable in everyday life. This study quantifies the performance of new multimodal wrist-worn convulsive seizure detectors. METHODS: Hand-annotated video-electroencephalographic seizure events were collected from 69 patients at six clinical sites. Three different wristbands were used to record electrodermal activity (EDA) and accelerometer (ACM) signals, obtaining 5,928 h of data, including 55 convulsive epileptic seizures (six focal tonic-clonic seizures and 49 focal to bilateral tonic-clonic seizures) from 22 patients...
November 2017: Epilepsia
https://www.readbyqxmd.com/read/28974594/an-unusual-case-of-refractory-status-epilepticus-in-a-young-lady-anti-nmda-receptor-encephalitis
#14
Ching Soong Khoo, Nurul Husna Zulkifli, Siti Soraya Ab Rahman
We describe a case of a young lady with anti-NMDA (N-methyl-D-aspartate) receptor encephalitis, who initially presented with status epilepticus. Her seizures and orofacial dyskinesia were refractory to four anticonvulsants. She received intravenous immunoglobulin and a left ovarian tumour (an associated feature) was resected. However, her outcome was poor because of delayed treatment, autonomic dysfunction and complications of prolonged hospitalisation. This case highlights the importance of an early recognition of this rare but increasingly recognised disease...
October 2017: Clinical Medicine: Journal of the Royal College of Physicians of London
https://www.readbyqxmd.com/read/28935354/anti-n-methyl-d-aspartate-receptor-encephalitis-in-children-of-central-south-china-clinical-features-treatment-influencing-factors-and-outcomes
#15
Ying Wang, Weixi Zhang, Jinghua Yin, Qianjin Lu, Fei Yin, Fang He, Jing Peng
BACKGROUND AND PURPOSE: We analyzed the clinical manifestations of children with anti-N-methyl-d-aspartate receptor (anti-NMDAR) encephalitis in Central South China and the factors influencing the effectiveness of treatment. METHODS: A retrospective study of children (0-14years old) with anti-NMDAR encephalitis in Central South China was carried out from March 2014 to November 2016. Demographics, clinical features, treatment, outcome, and the factors influencing the effectiveness of treatment were reviewed...
November 15, 2017: Journal of Neuroimmunology
https://www.readbyqxmd.com/read/28919768/ictal-heart-rate-changes-and-the-effects-of-vagus-nerve-stimulation-for-patients-with-refractory-epilepsy
#16
Wei Chen, Fan-Gang Meng
Vagus nerve stimulation (VNS) shows long-term efficiency worldwide in most pharmacoresistant patients with epilepsy; however, there are still a small number of patients who are non-responders to VNS therapy. It has been shown that VNS treatment outcomes for drug-resistant epilepsy may be predicted by preoperative heart-rate variability measurements and that patients with epilepsy with ictal tachycardia (IT) during seizures have good responses to VNS. However, few studies have reported the efficacy of VNS in patients with epilepsy with ictal bradycardia (IB) or normal heart rate (HR), and none have explored the possible mechanisms of VNS efficacy based on different HR types...
2017: Neuropsychiatric Disease and Treatment
https://www.readbyqxmd.com/read/28904568/pediatric-autoimmune-encephalitis
#17
REVIEW
Massimo Barbagallo, Giovanna Vitaliti, Piero Pavone, Catia Romano, Riccardo Lubrano, Raffaele Falsaperla
Autoimmune (antibody mediated) encephalitis (AE) is emerging as a more common cause of pediatric encephalopathy than previously thought. The autoimmune process may be triggered by an infection, vaccine, or occult neoplasm. In the latter case, onconeural autoantibodies are directed against intracellular neuronal antigens, but a recent heterogeneous group of encephalitic syndromes has been found not to have underlying tumor but is associated with autoantibodies to the neuronal surface or synaptic antigens. Neuropsychiatric symptoms are very common in autoimmune encephalopathy; as a result, affected children may be initially present to psychiatrists...
April 2017: Journal of Pediatric Neurosciences
https://www.readbyqxmd.com/read/28904459/clinical-biochemical-characteristics-and-hospital-outcome-of-acute-intermittent-porphyria-patients-a-descriptive-study-from-north-india
#18
Susheel Kumar, Ashish Bhalla, Navneet Sharma, Deba Prasad Dhibar, Savita Kumari, Subhash Varma
INTRODUCTION: Acute intermittent porphyria (AIP) is an inherited metabolic disease characterized by disordered heme biosynthesis. There is no recent study reported from India. MATERIALS AND METHODS: It was a retrospective, observational study. Clinical records of patients of AIP with acute porphyric attacks admitted from April 2008 to December 2016 were analyzed. RESULTS: Fifteen AIP patients constituted of eight females and seven males were analyzed...
July 2017: Annals of Indian Academy of Neurology
https://www.readbyqxmd.com/read/28900300/rogdi-defines-gabaergic-control-of-a-wake-promoting-dopaminergic-pathway-to-sustain-sleep-in-drosophila
#19
Minjong Kim, Donghoon Jang, Eunseok Yoo, Yangkyun Oh, Jun Young Sonn, Jongbin Lee, Yoonhee Ki, Hyo Jin Son, Onyou Hwang, Changwook Lee, Chunghun Lim, Joonho Choe
Kohlschutter-Tönz syndrome (KTS) is a rare genetic disorder with neurological dysfunctions including seizure and intellectual impairment. Mutations at the Rogdi locus have been linked to development of KTS, yet the underlying mechanisms remain elusive. Here we demonstrate that a Drosophila homolog of Rogdi acts as a novel sleep-promoting factor by supporting a specific subset of gamma-aminobutyric acid (GABA) transmission. Rogdi mutant flies displayed insomnia-like behaviors accompanied by sleep fragmentation and delay in sleep initiation...
September 12, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28884051/anti-n-methyl-d-aspartate-receptor-nmdar-encephalitis-in-association-with-ovarian-teratoma
#20
Javaad Ahmad, Muhammad Saad Sohail, Amina Khan, Ahmed H Qavi, Pramod Gaudel, Mehr Zahid, Salman Assad
Anti-N-methyl-D-aspartate-Receptor (NMDAR) encephalitis is an autoimmune disorder with a multifaceted presentation that involves memory deficits, psychiatric symptoms, and autonomic instability. This case report describes the classic presentation of Anti-NMDAR encephalitis and highlights its association with ovarian teratomas. We present a 26 -year-old female who came in with new onset seizures and altered mentation who subsequently developed automatism. Electroencephalograms (EEG) showed left frontal spikes and right temporal delta activity...
July 5, 2017: Curēus
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