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neonatal EEG

Ji Yeoun Yoo, Lara V Marcuse, Madeline C Fields, Jillian Rosengard, Maria Vittoria Traversa, Nicolas Gaspard, Lawrence J Hirsch
INTRODUCTION: Brief potentially ictal rhythmic discharges (B(I)RDs) have been described in neonates and critically ill adults, and their association with seizures has been demonstrated. Their significance in non-critically ill adults remains unclear. We aimed to investigate their prevalence, electrographic characteristics and clinical significance. METHODS: We identified adult patients with B(I)RDs who received long term EEG recordings either in the epilepsy monitoring unit or in the ambulatory setting...
October 19, 2016: Journal of Clinical Neurophysiology: Official Publication of the American Electroencephalographic Society
Amanda R Tarullo, Joseph R Isler, Carmen Condon, Kimon Violaris, Peter D Balsam, William P Fifer
Using an eyelid conditioning paradigm modeled after that developed by Little, Lipsitt, and Rovee-Collier (1984), Fifer et al. (2010) demonstrated that newborn infants learn during sleep. This study examined the role of sleep state in neonatal learning. We recorded electroencephalogram (EEG), respiratory, and cardiovascular activity from sleeping full term newborn infants during delay eyelid conditioning. In the experimental group (n = 21), a tone was paired with an air puff to the eye. Consistent with Fifer et al...
November 2016: Developmental Psychobiology
Andriy Temko, Gordon Lightbody
It is now generally accepted that EEG is the only reliable way to accurately detect newborn seizures and, as such, prolonged EEG monitoring is increasingly being adopted in neonatal intensive care units. Long EEG recordings may last from several hours to a few days. With neurophysiologists not always available to review the EEG during unsociable hours, there is a pressing need to develop a reliable and robust automatic seizure detection method-a computer algorithm that can take the EEG signal, process it, and output information that supports clinical decision making...
October 2016: Journal of Clinical Neurophysiology: Official Publication of the American Electroencephalographic Society
Julia Jacobs, Emily M Spelbrink
Infants born prematurely are highly vulnerable to brain injury and susceptible to seizures in the first weeks of life. Many neonatal seizures occur without reliable clinical signs and are detectable only on electroencephalogram (EEG); understanding EEG findings in these neonates is crucial for providing appropriate care. This can be challenging, as EEG background activity and patterns vary considerably with gestational age. Some physiologic preterm EEG patterns, such as rhythmic temporal theta activity or delta brushes, may be sharply contoured and appear similar to epileptic EEG patterns later in life...
October 2016: Journal of Clinical Neurophysiology: Official Publication of the American Electroencephalographic Society
Rawad Obeid, Tammy N Tsuchida
Conventional EEG and amplitude-integrated electroencephalography are used in neonates to assess prognosis and significant changes in brain activity. Neuroactive medications and hypothermia can influence brain activity and therefore alter EEG interpretation. There are limited studies on the effect of these therapies on neonatal EEG background activity. Medication effects on the EEG or amplitude-integrated electroencephalography include increased interburst interval duration, voltage suppression, and sleep disruption...
October 2016: Journal of Clinical Neurophysiology: Official Publication of the American Electroencephalographic Society
Vera Vigo, Domenica Immacolata Battaglia, Paolo Frassanito, Gianpiero Tamburrini, Massimo Caldarelli, Luca Massimi
Cephalohematoma, one of the most common neonatal head injuries, generally undergoes spontaneous resorption. When calcified, it may cause cranial vault distortion and depression of the inner skull layer, although it remains asymptomatic. Surgery, indeed, is usually performed for cosmetic purposes. For these reasons, the long-term effects of calcified cephalohematoma (CC) are widely unknown. The authors report the case of an 11-year-old girl with a persistent calcified CC causing skull deformity and delayed electroencephalography (EEG) anomalies...
October 7, 2016: Journal of Neurosurgery. Pediatrics
Zachary A Vesoulis, Christopher McPherson, Jeffrey J Neil, Amit M Mathur, Terrie E Inder
Background: Although evidence suggests that methylxanthines may lower the seizure threshold, the effect of high-dose caffeine on seizure burden in preterm infants is not known. This study reports a secondary post hoc analysis of a randomized controlled trial of early high-dose caffeine citrate therapy in preterm infants, evaluating the effect of caffeine on the seizure burden using amplitude-integrated electroencephalography (aEEG). Methods: Seventy-four preterm infants (≤30 weeks gestation) were randomized to receive high-dose (n = 37, 80 mg/kg over 36 hours) or standard-dose (n = 37, 30 mg/kg over 36 hours) caffeine citrate over the first 36 hours followed by standard maintenance therapy...
September 1, 2016: Journal of Caffeine Research
Laura Bennet, Karinna L Fyfe, Stephanie R Yiallourou, Henriette Merk, Flora Y Wong, Rosemary S C Horne
AIM: Limited two-channel electroencephalography (EEG) and amplitude-integrated EEG (aEEG) monitorings are being increasingly used; however, these measurements have not been compared with polysomnographic monitoring, the gold standard for determining infant sleep states. We aimed to determine the accuracy of two-channel EEG and aEEG recordings in defining sleep states and wakefulness in term infants compared to polysomnographic monitoring. METHODS: Sleep was assessed in eight healthy term born infants (mean: 34 ± 3 days), using simultaneous polysomnography (Compumedics S-Series) and a two-channel EEG monitor (Brainz BRM2)...
September 23, 2016: Acta Paediatrica
Deirdre M Murray, Catherine M O'Connor, C Anthony Ryan, Irina Korotchikova, Geraldine B Boylan
OBJECTIVE: More than half of all infants with neonatal hypoxic ischemic encephalopathy (HIE) are graded as mild and do not meet current criteria for therapeutic hypothermia. These infants are often not enrolled in follow-up, and hence our knowledge of their long-term outcome is sparse. We wished to compare 5-year outcomes in a group of infants with mild, moderate, and severe HIE, graded with both early EEG and clinical assessment, none of whom were treated with therapeutic hypothermia...
September 20, 2016: Pediatrics
Ala Birca, Vasily A Vakorin, Prashob Porayette, Sujana Madathil, Vann Chau, Mike Seed, Sam M Doesburg, Susan Blaser, Dragos A Nita, Rohit Sharma, Emma G Duerden, Edward J Hickey, Steven P Miller, Cecil D Hahn
OBJECTIVE: To evaluate whether structural and microstructural brain abnormalities in neonates with congenital heart disease (CHD) correlate with neuronal network dysfunction measured by analysis of EEG connectivity. METHODS: We studied a prospective cohort of 20 neonates with CHD who underwent continuous EEG monitoring before surgery to assess functional brain maturation and network connectivity, structural magnetic resonance imaging (MRI) to determine the presence of brain injury and structural brain development, and diffusion tensor MRI to assess brain microstructural development...
September 2016: Annals of Clinical and Translational Neurology
Seonkyeong Rhie, Kyu Young Chae, Heui Seung Jo, Kyu Hyung Lee
BACKGROUND: The aim of this study was to evaluate the results of sleep-wake cycle monitoring using amplitude-integrated EEG (aEEG) and neuroimaging in newborn infants with a possible perinatal hypoxic insult, investigate the correlation between the findings, and determine the relevance of the findings to reasonably predict neurological outcome. METHODS: aEEG was recorded among newborn infants suspected of perinatal asphyxia between November, 2014 and June, 2015 in one neonatal intensive care unit facility...
2016: Italian Journal of Pediatrics
Elise Labonte-Lemoyne, Daniel Curnier, Dave Ellemberg
Accumulating research indicates that the regular practice of physical exercise is beneficial to the human brain. From the improvement of academic achievement in children to the prevention of Alzheimer's disease in the elderly, exercise appears beneficial across the developmental spectrum. Recent work from animal studies also indicates that a pregnant mother can transfer the benefits of exercise during gestation to her offspring's brain. Exercising pregnant rats give birth to pups that have better memory and spatial learning as well as increased synaptic density...
September 13, 2016: Journal of Clinical and Experimental Neuropsychology
John J Millichap, Kristen L Park, Tammy Tsuchida, Bruria Ben-Zeev, Lionel Carmant, Robert Flamini, Nishtha Joshi, Paul M Levisohn, Eric Marsh, Srishti Nangia, Vinodh Narayanan, Xilma R Ortiz-Gonzalez, Marc C Patterson, Phillip L Pearl, Brenda Porter, Keri Ramsey, Emily L McGinnis, Maurizio Taglialatela, Molly Tracy, Baouyen Tran, Charu Venkatesan, Sarah Weckhuysen, Edward C Cooper
OBJECTIVE: To advance the understanding of KCNQ2 encephalopathy genotype-phenotype relationships and to begin to assess the potential of selective KCNQ channel openers as targeted treatments. METHODS: We retrospectively studied 23 patients with KCNQ2 encephalopathy, including 11 treated with ezogabine (EZO). We analyzed the genotype-phenotype relationships in these and 70 previously described patients. RESULTS: The mean seizure onset age was 1...
October 2016: Neurology. Genetics
Tristan T Sands, Tiffani L McDonough
PURPOSE OF REVIEW: This article strives to review and summarize selected recent literature and topics contributing to a greater understanding of the diagnosis and treatments of neonatal seizures that have emerged in the past several years. RECENT FINDINGS: Continuous EEG is recommended as the gold standard for neonatal seizure monitoring as it can provide additional information that may stratify patients by etiology, as well as identify at-risk groups of newborns for neuromonitoring...
October 2016: Current Neurology and Neuroscience Reports
Fiona M Baumer, Jurriaan M Peters, Christelle M El Achkar, Phillip L Pearl
Voltage-gated sodium channels (Nav) are critical regulators of neuronal excitability. Genes for the α-subunits of three sodium channel subtypes-SCN1A, SCN2A, and SCN3A-are all located on chromosome 2q24. A full-term boy with an unremarkable birth history presented at 1 month of age with unusual movements that had started on day of life 2. Exam was notable for lack of visual attention, hypotonia, and hyperreflexia. Electroencephalogram (EEG) showed an invariant burst suppression with multifocal spikes, ictal episodes with bicycling movements associated with buildups of rhythmic activity, and epileptic spasms...
March 2016: Journal of Pediatric Epilepsy
Mimily Harsono, Massroor Pourcyrous, Elliott J Jolly, Amy de Jongh Curry, Alexander L Fedinec, Jianxiong Liu, Shymali Basuroy, Daming Zhuang, Charles W Leffler, Helena Parfenova
Epileptic seizures in neonates cause cerebrovascular injury and impairment of cerebral blood flow (CBF) regulation. In the bicuculline model of seizures in newborn pigs, we tested the hypothesis that selective head cooling prevents deleterious effects of seizures on cerebral vascular functions. Preventive or therapeutic ictal head cooling was achieved by placing two head ice packs during the preictal and/or ictal states, respectively, for the ~2-h period of seizures. Head cooling lowered the brain and core temperatures to 25...
September 2, 2016: American Journal of Physiology. Heart and Circulatory Physiology
Allison Fitch, Hayley Smith, Sylvia B Guillory, Zsuzsa Kaldy
Current neuroscientific models describe the functional neural architecture of visual working memory (VWM) as an interaction of the frontal-parietal control network and more posterior areas in the ventral visual stream (Jonides et al., 2008; D'Esposito and Postle, 2015; Eriksson et al., 2015). These models are primarily based on adult neuroimaging studies. However, VWM undergoes significant development in infancy and early childhood, and the goal of this mini-review is to examine how recent findings from neuroscientific studies of early VWM development can be reconciled with this model...
2016: Frontiers in Systems Neuroscience
Unnikrishnan Krishnan Syam, Sanjeev V Thomas
PURPOSE: To study the epileptiform discharges (EDs) in the electroencephalogram (EEG) of 6-8-year-old children of women with epilepsy (WWE). MATERIALS AND METHODS: All children born to women with epilepsy and prospectively followed up through the Kerala Registry of Epilepsy and Pregnancy (KREP), aged 6-8 years, were invited (n = 532). Out of the 254 children who responded, clinical evaluations and a 30-min digital 18 channel EEG were completed in 185 children. RESULTS: Of the 185 children examined, 37 (20%) children (19 males, 18 females) had ED in their EEG...
July 2016: Annals of Indian Academy of Neurology
Katie M Pfister, Lei Zhang, Neely C Miller, Solveig Hultgren, Chris J Boys, Michael K Georgieff
BACKGROUND: Neonatal encephalopathy (NE) carries high risk for neurodevelopmental impairments. Therapeutic hypothermia (TH) reduces this risk, particularly for moderate encephalopathy (ME). Nevertheless, these infants often have subtle functional deficits, including abnormal memory function. Detection of deficits at the earliest possible time-point would allow for intervention during a period of maximal brain plasticity. METHODS: Recognition memory function in 22 infants with NE treated with TH was compared to 23 healthy controls using event-related potentials (ERPs) at 2 weeks of age...
August 16, 2016: Pediatric Research
Alexander Caicedo, Liesbeth Thewissen, Anne Smits, Gunnar Naulaers, Karel Allegaert, Sabine Van Huffel
Brain function is supported by an appropriate balance between the metabolic demand and the supply of nutrients and oxygen. However, the physiological principles behind the regulation of brain metabolism and demand in premature infants are unknown. Some studies found that changes in hemodynamic variables in this population precede changes in EEG activity; however, these studies only used descriptive statistics. This paper describes the relationship between changes in cerebral oxygenation, assessed by means of near-infrared spectroscopy (NIRS), and changes in EEG, using mathematical methods taken from information dynamics...
2016: Advances in Experimental Medicine and Biology
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