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neonatal EEG

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https://www.readbyqxmd.com/read/29684437/sleep-dysfunction-following-neonatal-ischemic-seizures-are-differential-by-neonatal-age-of-insult-as-determined-by-qeeg-in-a-mouse-model
#1
S K Kang, S Ammanuel, S Thodupunuri, D A Adler, M V Johnston, S D Kadam
Neonatal seizures associated with hypoxic-ischemic encephalopathy (HIE) pose a challenge in their acute clinical management and are often followed by long-term neurological consequences. We used a newly characterized CD-1 mouse model of neonatal ischemic seizures associated with age-dependent (P7 vs. P10) seizure severity and phenobarbital efficacy (i.e.; PB-resistant vs. PB-efficacious respectively) following unilateral carotid ligation. The long-term consequences following untreated neonatal seizures in P7 vs...
April 20, 2018: Neurobiology of Disease
https://www.readbyqxmd.com/read/29649454/association-between-scn1a-and-scn2a-mutations-and-clinical-eeg-features-in-chinese-patients-from-epilepsy-or-severe-seizures
#2
Yanting Kong, Kai Yan, Liyuan Hu, Mingbang Wang, Xinran Dong, Yulan Lu, Bingbing Wu, Huijun Wang, Lin Yang, Wenhao Zhou
BACKGROUND: We investigated the association between SCN1A and SCN2A mutations and clinical phenotype and electroencephalography (EEG) features. METHODS: In this study, 48 patients suffered from epilepsy or severe seizures with SCN1A and SCN2A mutations were recruited. Medical data and molecular diagnosis were analyzed. RESULTS: A total of 47 mutations were identified, including 33 novel mutations. The onset of most epilepsy caused by SCN1A mutations (1-6 m) was later than that of SCN2A mutations (neonatal)...
April 9, 2018: Clinica Chimica Acta; International Journal of Clinical Chemistry
https://www.readbyqxmd.com/read/29602053/eeg-findings-and-outcomes-of-continuous-video-eeg-monitoring-started-prior-to-initiation-of-seizure-treatment-in-the-perinatal-stroke
#3
José R Castro Conde, Itziar Quintero Fuentes, Candelaria González Campo, Alejandro Jiménez Sosa, Beatriz Reyes Millán, Sergio Hernández Expósito
BACKGROUND: To analyze the findings in the background EEG activity of infants who suffered perinatal stroke. METHODS: Eleven neonates born 2009-2014 diagnosed of ischemic stroke by MRI (three of them with multistroke) underwent continuous video-EEG monitoring. Visual and spectral (power spectrum and coherence) analyses of the background EEG was performed in three moments: 1) Onset of EEG recording (prior to initiate seizure treatment), 2) Post-ictal epoch (1-2 h after the last seizure), and 3) one-two days after seizure control...
March 27, 2018: Early Human Development
https://www.readbyqxmd.com/read/29596059/a-brain-age-model-for-preterm-infants-based-on-functional-connectivity
#4
Mario Lavanga, Ofelie De Wel, Alexander Caicedo Dorado, Katrien Jansen, Anneleen Dereymaeker, Gunnar Naulaers, Sabine Van Huffel
In this study, the development of EEG functional connectivity during early development has been investigated in order to provide a predictive age model for premature infants. The functional connectivity has been assessed via the coherency function (its imaginary part (<i>ImCoh</i>) and its mean squared magnitude (<i>MSC</i>)), the phase locking value (<i>PLV</i>) and the mutual information (<i>MI</i>) in a dataset of 30 patients, partially described and employed in previous studies...
March 29, 2018: Physiological Measurement
https://www.readbyqxmd.com/read/29579554/clinical-and-electrophysiological-findings-in-patients-with-phenylketonuria-and-epilepsy-reflex-features
#5
Senay Yildiz Celik, Nerses Bebek, Candan Gurses, Betul Baykan, Aysen Gokyigit
OBJECTIVE: Phenylketonuria (PKU) is the most common form of amino acid metabolism disorders with autosomal recessive inheritance. The brain damage can be prevented by early diagnosis and a phenylalanine-restricted diet. Untreated or late-treated patients may show mental retardation and other cognitive dysfunctions, as well as motor disability and/or epilepsy. METHODS: Three patients with PKU and epilepsy were recognized to have reflex epileptic features, and there were ten consecutive adult patients with PKU and epilepsy who were evaluated retrospectively...
March 23, 2018: Epilepsy & Behavior: E&B
https://www.readbyqxmd.com/read/29554576/positive-interictal-epileptiform-discharges-in-adults-a-case-series-of-a-rare-phenomenon
#6
Ana Catarina Franco, Olympia Kremmyda, Jan Rémi, Soheyl Noachtar
OBJECTIVE: Positive interictal epileptiform discharges (IEDs) are rarely recorded from surface EEG, due to the orientation of the cortex and its neurons. Their frequency and significance in adults is unknown, and has only been studied as a phenomenon of the neonatal period and childhood. We aimed to evaluate the frequency and characteristics of positive epileptiform discharges in a large cohort of patients. METHODS: We retrospectively reviewed 24,178 reports from 18,060 patients of non-invasively recorded EEGs for various indications...
February 8, 2018: Clinical Neurophysiology: Official Journal of the International Federation of Clinical Neurophysiology
https://www.readbyqxmd.com/read/29527487/hypersynchrony-in-meg-spectral-amplitude-in-prospectively-identified-6-month-old-infants-prenatally-exposed-to-alcohol
#7
Julia M Stephen, Lucinda Flynn, Danielle Kabella, Megan Schendel, Sandra Cano, Daniel D Savage, William Rayburn, Lawrence M Leeman, Jean Lowe, Ludmila N Bakhireva
Early identification of children who experience developmental delays due to prenatal alcohol exposure (PAE) remains a challenge for individuals who do not exhibit facial dysmorphia. It is well-established that children with PAE may still exhibit the cognitive and behavioral difficulties, and individuals without facial dysmorphia make up the majority of individuals affected by PAE. This study employed a prospective cohort design to capture alcohol consumption patterns during pregnancy and then followed the infants to 6 months of age...
2018: NeuroImage: Clinical
https://www.readbyqxmd.com/read/29476891/post-arrest-therapeutic-hypothermia-in-pediatric-patients-with-congenital-heart-disease
#8
Henry H Cheng, Satish K Rajagopal, Arnold J Sansevere, Erica McDavitt, Daniel Wigmore, Jessica Mecklosky, Kristofer Andren, Kathryn A Williams, Amy Danehy, Janet S Soul
BACKGROUND: While therapeutic hypothermia (TH) is an effective neuroprotective therapy for neonatal hypoxic-ischemic encephalopathy, TH has not been demonstrated to improve outcome in other pediatric populations. Patients with acquired or congenital heart disease (CHD) are at high risk of both cardiac arrest and neurodevelopmental impairments, and therapies are needed to improve neurologic outcome. The primary goal of our study was to compare safety/efficacy outcomes in post-arrest CHD patients treated with TH versus controls not treated with TH...
February 21, 2018: Resuscitation
https://www.readbyqxmd.com/read/29475639/neonatal-sirpids-a-confusing-eeg-finding
#9
Kathleen M Gorman, Anna Jeong, Andrea C Pardo
No abstract text is available yet for this article.
December 25, 2017: Pediatric Neurology
https://www.readbyqxmd.com/read/29472139/amplitude-integrated-electroencephalography-for-seizure-detection-in-newborn-infants
#10
REVIEW
Lena Hellström-Westas
The amplitude-integrated electroencephalogram (aEEG) is a filtered and compressed EEG trend that can be used for long-term monitoring of brain function in patients of all ages. aEEG is increasingly used in neonatal intensive care units since several studies have shown its utility in high-risk newborn infants. Main indications for aEEG monitoring include early evaluation of brain function after perinatal asphyxia and seizure detection. The aEEG is usually recorded from one or two channels derived from parietal, central, or frontal leads...
February 13, 2018: Seminars in Fetal & Neonatal Medicine
https://www.readbyqxmd.com/read/29467103/designing-a-trial-for-neonatal-seizure-treatment
#11
REVIEW
Nathan J Stevenson, Sampsa Vanhatalo
Neonatal seizures are widely considered a neurological emergency with a need for prompt treatment, yet they are known to present a highly elusive target for bedside clinicians. Recent studies have suggested that the design of a neonatal seizure treatment trial will profoundly influence the sample size, which may readily increase to hundreds or even thousands as the achieved effect size diminishes to clinical irrelevance. The self-limiting and rapidly resolving nature of neonatal seizures diminishes the measurable treatment effect every hour after seizure onset and any effect may potentially be confused with spontaneous resolution, precluding the value of many observational studies...
February 12, 2018: Seminars in Fetal & Neonatal Medicine
https://www.readbyqxmd.com/read/29432237/hypoxic-ischemic-encephalopathy-and-other-neonatal-encephalopathies
#12
Hannah C Glass
PURPOSE OF REVIEW: Neonatal encephalopathy is the most common condition in neonates encountered by child neurologists. The etiology is most often global hypoxia-ischemia due to failure of cerebral perfusion to the fetus caused by uterine, placental, or umbilical cord compromise prior to or during delivery. Other etiologies of neonatal encephalopathy include ischemic stroke and intracranial hemorrhage, infection, developmental anomalies, and inborn errors of metabolism. RECENT FINDINGS: Therapeutic hypothermia is standard of care for the treatment of neonatal encephalopathy presumed to be caused by hypoxia-ischemia...
February 2018: Continuum: Lifelong Learning in Neurology
https://www.readbyqxmd.com/read/29391079/update-on-minimal-standards-for-electroencephalography-in-canada-a-review-by-the-canadian-society-of-clinical-neurophysiologists
#13
Dianne Dash, Chelsea Dash, Sara Primrose, Lizbeth Hernandez-Ronquillo, Farzad Moien-Afshari, Lady D Ladino, Juan Pablo Appendino, Lindsay Mazepa, Christine Elliott, Seyed M Mirsattari, Paolo Federico, Esther Bui, Gary Hunter, Rajesh RamachandranNair, Rohit Sharma, Paula Melendres, Joanne Nikkel, Dang Khoa Nguyen, Salah Almubarak, Mike Rigby, Jose F Téllez-Zenteno
Surface electroencephalogram (EEG) recording remains the gold standard for noninvasive assessment of electrical brain activity. It is the most efficient way to diagnose and classify epilepsy syndromes as well as define the localization of the epileptogenic zone. The EEG is useful for management decisions and for establishing prognosis in some types of epilepsy. Electroencephalography is an evolving field in which new methods are being introduced. The Canadian Society of Clinical Neurophysiologists convened an expert panel to develop new national minimal guidelines...
November 2017: Canadian Journal of Neurological Sciences. le Journal Canadien des Sciences Neurologiques
https://www.readbyqxmd.com/read/29360555/pilot-study-of-eeg-in-neonates-born-to-mothers-with-gestational-diabetes-mellitus
#14
Pauline Léveillé-, Mathieu Hamel, Jean-Luc Ardilouze, Jean-Charles Pasquier, Charles Deacon, Kevin Whittingstall, Mélanie Plourde
BACKGROUND: The goal was to evaluate whether there was neurodevelopmental deficits in newborns born to mothers with gestational diabetes mellitus (GDM) compared to control newborns born to healthy mothers. METHODS: Forty-six pregnant women (21 controls and 25 GDM) were recruited. Electroencephalogram (EEG) was recorded in the newborns within 48 h after birth. The EEG signal was quantitatively analyzed using power spectral density (PSD); coherence between hemispheres was calculated in paired channels of frontal, temporal, central and occipital regions...
May 2018: International Journal of Developmental Neuroscience
https://www.readbyqxmd.com/read/29352657/electroencephalographic-monitoring-for-seizure-identification-and-prognosis-in-term-neonates
#15
REVIEW
Shavonne L Massey, Frances E Jensen, Nicholas S Abend
Seizures represent a manifestation of neurological disease in the neonatal period. Historically, neonatal seizures were identified by direct clinical observation. However, since most seizures are electroencephalographic (EEG)-only (subclinical, non-convulsive) and clinical manifestations may be subtle, many clinicians place increasing importance on EEG data including conventional EEG or amplitude-integrated EEG to identify seizures in neonates. Beyond seizure identification, the EEG is a robust source of information about brain function that can be useful for neurobehavioral prognostication in some neonates...
January 15, 2018: Seminars in Fetal & Neonatal Medicine
https://www.readbyqxmd.com/read/29350182/the-role-of-eeg-in-the-diagnosis-and-classification-of-the-epilepsy-syndromes-a-tool-for-clinical-practice-by-the-ilae-neurophysiology-task-force-part-2
#16
Michalis Koutroumanidis, Alexis Arzimanoglou, Roberto Caraballo, Sushma Goyal, Anna Kaminska, Pramote Laoprasert, Hirokazu Oguni, Guido Rubboli, William Tatum, Pierre Thomas, Eugen Trinka, Luca Vignatelli, Solomon L Moshé
The concept of epilepsy syndromes, introduced in 1989, was defined as "clusters of signs and symptoms customarily occurring together". Definition of epilepsy syndromes based on electro-clinical features facilitated clinical practice and, whenever possible, clinical research in homogeneous groups of patients with epilepsies. Progress in the fields of neuroimaging and genetics made it rapidly clear that, although crucial, the electro-clinical description of epilepsy syndromes was not sufficient to allow much needed development of targeted therapies and a better understanding of the underlying pathophysiological mechanisms of seizures...
December 1, 2017: Epileptic Disorders: International Epilepsy Journal with Videotape
https://www.readbyqxmd.com/read/29346650/persistence-of-zika-virus-after-birth-clinical-virological-neuroimaging-and-neuropathological-documentation-in-a-5-month-infant-with-congenital-zika-syndrome
#17
Leila Chimelli, Sheila Moura Pone, Elyzabeth Avvad-Portari, Zilton Farias Meira Vasconcelos, Andrea Araújo Zin, Daniela Prado Cunha, Nathalia Raposo Thompson, Maria Elisabeth Lopes Moreira, Clayton A Wiley, Marcos Vinicius da Silva Pone
During the Zika epidemic in Brazil, a baby was born at term with microcephaly and arthrogryposis. The mother had Zika symptoms at 10 weeks of gestation. At 17 weeks, ultrasound showed cerebral malformation and ventriculomegaly. At 24 weeks, the amniotic fluid contained ZIKV RNA and at birth, placenta and maternal blood were also positive using RT-qPCR. At birth the baby urine contained ZIKV RNA, whereas CSF at birth and urine at 17 days did not. Seizures started at 6 days. EEG was abnormal and CT scan showed cerebral atrophy, calcifications, lissencephaly, ventriculomegaly, and cerebellar hypoplasia...
March 1, 2018: Journal of Neuropathology and Experimental Neurology
https://www.readbyqxmd.com/read/29328980/consequence-of-intraventricular-hemorrhage-on-neurovascular-coupling-evoked-by-speech-syllables-in-preterm-neonates
#18
Mahdi Mahmoudzadeh, Ghislaine Dehaene-Lambertz, Guy Kongolo, Marc Fournier, Sabrina Goudjil, Fabrice Wallois
Intraventricular Hemorrhage (IVH) is the leading cause of neurological and cognitive impairment in preterm neonates with an incidence that increases with increasing prematurity. In the present study, we tested how preterm neonates with IVH react to external stimulation (i.e. speech syllables). We compared their neural responses measured by electroencephalography (EEG), and hemodynamic responses measured by functional near-infrared spectroscopy (fNIRS), with those of healthy preterms. A neural response to syllables was observed in these infants, but did not induce a vascular response in contrast with healthy neonates...
January 5, 2018: Developmental Cognitive Neuroscience
https://www.readbyqxmd.com/read/29296617/flupirtine-and-diazepam-combination-terminates-established-status-epilepticus-results-in-three-rodent-models
#19
Terry Zhang, Marko S Todorovic, John Williamson, Jaideep Kapur
Objective: Status epilepticus (SE) is a neurological emergency requiring rapid termination of seizures. New treatment choices are needed for benzodiazepine-refractory SE or established SE (ESE). Previous studies have demonstrated that the potassium-channel opener flupirtine terminates seizures in neonatal animals. However, its effectiveness in adult ESE has not been tested. We tested whether flupirtine alone or in combination with the benzodiazepine diazepam would terminate ESE in three animal models...
December 2017: Annals of Clinical and Translational Neurology
https://www.readbyqxmd.com/read/29244803/changes-in-brain-morphology-and-microstructure-in-relation-to-early-brain-activity-in-extremely-preterm-infants
#20
Maria Luisa Tataranno, Nathalie H P Claessens, Pim Moeskops, Mona C Toet, Karina J Kersbergen, Giuseppe Buonocore, Ivana Išgum, Alexander Leemans, Serena Counsell, Floris Groenendaal, Linda S de Vries, Manon J N L Benders
Background and ObjectiveTo investigate the relation of early brain activity with structural (growth of the cortex and cerebellum) and white matter microstructural brain development.MethodsA total of 33 preterm neonates (gestational age 26±1 weeks) without major brain abnormalities were continuously monitored with electroencephalography during the first 48 h of life. Rate of spontaneous activity transients per minute (SAT rate) and inter-SAT interval (ISI) in seconds per minute were calculated. Infants underwent brain magnetic resonance imaging ∼30 (mean 30...
January 17, 2018: Pediatric Research
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