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Brain death EEG

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https://www.readbyqxmd.com/read/28073789/dynamics-of-convulsive-seizure-termination-and-postictal-generalized-eeg-suppression
#1
Prisca R Bauer, Roland D Thijs, Robert J Lamberts, Demetrios N Velis, Gerhard H Visser, Else A Tolner, Josemir W Sander, Fernando H Lopes da Silva, Stiliyan N Kalitzin
It is not fully understood how seizures terminate and why some seizures are followed by a period of complete brain activity suppression, postictal generalized EEG suppression. This is clinically relevant as there is a potential association between postictal generalized EEG suppression, cardiorespiratory arrest and sudden death following a seizure. We combined human encephalographic seizure data with data of a computational model of seizures to elucidate the neuronal network dynamics underlying seizure termination and the postictal generalized EEG suppression state...
January 10, 2017: Brain: a Journal of Neurology
https://www.readbyqxmd.com/read/28053858/a-major-miss-in-prognostication-after-cardiac-arrest-burst-suppression-and-brain-healing
#2
Danielle A Becker, Nicholas D Schiff, Lance B Becker, Manisha G Holmes, Joseph J Fins, James M Horowitz, Orrin Devinsky
We report a case with therapeutic hypothermia after cardiac arrest where meaningful recovery far exceeded anticipated negative endpoints following cardiac arrest with loss of brainstem reflexes and subsequent status epilepticus. This man survived and recovered after an out-of-hospital cardiac arrest followed by a 6-week coma with absent motor responses and 5 weeks of burst suppression. Standard criteria suggested no chance of recovery. His recovery may relate to the effect of burst-suppression on EEG to rescue neurons near neuronal cell death...
2017: Epilepsy & Behavior Case Reports
https://www.readbyqxmd.com/read/28026196/unresolved-loss-a-risk-factor-for-offspring-predicts-event-related-potential-responses-to-death-related-imagery
#3
Naomi I Gribneau Bahm, Emiliana R Simon-Thomas, Mary Main, Erik Hesse
This study investigates whether individual differences in attachment status can be detected by electrophysiological responses to loss-themed pictures. The Adult Attachment Interview (AAI) was used to identify discourse/reasoning lapses during the discussion of loss experiences via death that place speakers in the Unresolved/disorganized AAI category. In parents, Unresolved AAI status has been associated with Disorganized infant Strange Situation response, a known risk factor for psychopathology (e.g., internalizing/externalizing/dissociation)...
January 2017: Developmental Psychology
https://www.readbyqxmd.com/read/27924356/comparison-of-two-common-aeeg-classifications-for-the-prediction-of-neurodevelopmental-outcome-in-preterm-infants
#4
Nora Bruns, Frauke Dransfeld, Britta Hüning, Julia Hobrecht, Tobias Storbeck, Christel Weiss, Ursula Felderhoff-Müser, Hanna Müller
: Neurodevelopmental outcome after prematurity is crucial. The aim was to compare two amplitude-integrated EEG (aEEG) classifications (Hellström-Westas (HW), Burdjalov) for outcome prediction. We recruited 65 infants ≤32 weeks gestational age with aEEG recordings within the first 72 h of life and Bayley testing at 24 months corrected age or death. Statistical analyses were performed for each 24 h section to determine whether very immature/depressed or mature/developed patterns predict survival/neurological outcome and to find predictors for mental development index (MDI) and psychomotor development index (PDI) at 24 months corrected age...
December 6, 2016: European Journal of Pediatrics
https://www.readbyqxmd.com/read/27898690/isoflurane-exposure-induces-cell-death-microglial-activation-and-modifies-the-expression-of-genes-supporting-neurodevelopment-and-cognitive-function-in-the-male-newborn-piglet-brain
#5
Kevin D Broad, Jane Hassell, Bobbi Fleiss, Go Kawano, Mojgan Ezzati, Eridan Rocha-Ferreira, Mariya Hristova, Kate Bennett, Igor Fierens, Ryan Burnett, Badr Chaban, Daniel Alonso-Alconada, Aaron Oliver-Taylor, Ilias Tachsidis, Jamshid Rostami, Pierre Gressens, Robert D Sanders, Nicola J Robertson
Exposure of the brain to general anesthesia during early infancy may adversely affect its neural and cognitive development. The mechanisms mediating this are complex, incompletely understood and may be sexually dimorphic, but include developmentally inappropriate apoptosis, inflammation and a disruption to cognitively salient gene expression. We investigated the effects of a 6h isoflurane exposure on cell death, microglial activation and gene expression in the male neonatal piglet brain. Piglets (n = 6) were randomised to: (i) naive controls or (ii) 6h isoflurane...
2016: PloS One
https://www.readbyqxmd.com/read/27876002/sporadic-creutzfeldt-jakob-disease-with-unusual-initial-presentation-as-posterior-reversible-encephalopathy-syndrome-a-case-report
#6
Edgaras Dirzius, Renata Balnyte, Vesta Steibliene, Rymante Gleizniene, Inga Gudinaviciene, Andrius Radziunas, Kestutis Petrikonis
BACKGROUND: Creutzfeldt - Jakob disease (CJD) is a rapidly progressive and fatal neurodegenerative prion disease. MRI findings are included in diagnostic criteria for probable CJD, giving a sensitivity and specificity more than 90%, but the atypical radiological presentations in the early stage of the disease could cause the diagnostic difficulties. CJD can be definitively diagnosed by histopathological confirmation, brain biopsy or at autopsy. CASE PRESENTATION: We present a case of 53-year-old woman with a history of a rapidly progressive dementia with symptoms of visual impairment, increased extrapyramidal type muscle tonus, stereotypical movements and ataxic gait resulting in the patient's death after13 months...
November 22, 2016: BMC Neurology
https://www.readbyqxmd.com/read/27784474/-clinical-features-and-gene-mutations-in-epilepsy-of-infancy-with-migrating-focal-seizures
#7
K W Shang, Y H Zhang, X L Yang, A J Liu, Z X Yang, X Y Liu, Y W Jiang, X R Wu
Objective: To summarize the clinical features and gene mutations of epilepsy of infancy with migrating focal seizures (EIMFS). Method: Clinical features and electroencephalograms(EEG)of 9 patients with EIMFS of Peking University First Hospital from May 2015 to January 2016 were analyzed. Candidate gene mutations were screened by next generation sequencing. Result: Among the 9 patients, 3 were males and 6 were females. Two patients had family history. Seizure onset age was 2 days to 3 months after birth (median age 35 days)...
October 2, 2016: Zhonghua Er Ke za Zhi. Chinese Journal of Pediatrics
https://www.readbyqxmd.com/read/27744244/distinct-behavioral-and-epileptic-phenotype-differences-in-129-p-mice-compared-to-c57bl-6-mice-subject-to-intraamygdala-kainic-acid-induced-status-epilepticus
#8
Luiz Fernando Almeida Silva, Tobias Engel, Cristina R Reschke, Ronan M Conroy, Elena Langa, David C Henshall
Animal models of status epilepticus are important tools to understand the pathogenesis of epileptic brain injury and evaluate potential seizure-suppressive, neuroprotective, and antiepileptogenic treatments. Focal elicitation of status epilepticus by intraamygdala kainic acid in mice produces unilateral hippocampal damage and the emergence of spontaneous recurrent seizures after a short latent period. The model has been characterized in C57BL/6, BALB/c, and SJL mice where strain-specific differences were found in the extent of hippocampal damage...
October 13, 2016: Epilepsy & Behavior: E&B
https://www.readbyqxmd.com/read/27742309/factors-delaying-organ-procurement-after-declaration-of-brain-death-in-korea
#9
Y-D Yu, S-J Kim, Y-S Jang, S-W Jung, J-H Han, H Jun, C-W Jung, D-S Kim
BACKGROUND: Organ donation after brain death is a major source for obtaining transplantable organs for patients with end-stage organ disease. However, the time from declaring brain death to organ procurement is often longer than expected. Analyzing factors that delay organ procurement may help to prevent damage to organs from marginal and unstable donors and aid in preparation for recipient operation. The aim of this study was to examine factors associated with the interval between the time of declaring brain death and organ procurement...
September 2016: Transplantation Proceedings
https://www.readbyqxmd.com/read/27717922/interictal-heart-rate-in-patients-with-epilepsy
#10
Iwona Mańka-Gaca, Beata Łabuz-Roszak, Agnieszka Machowska-Majchrzak, Zbigniew Kalarus, Beata Średniawa, Krystyna Pierzchała
INTRODUCTION: Electrocardiographic abnormalities in patients with epilepsy are related to the presence of discharges in central autonomic structures and the effect of antiepileptic drugs. These patients are at risk for sudden unexpected death, and cardiac arrhythmias are one of the most probable causes related to it. THE AIM: The heart rate (HR) assessment recorded on electrocardiography (ECG) in the interictal period in patients with newly diagnosed and previously treated epilepsy, depending on the type of changes in electroencephalography (EEG) and the treatment option...
2016: Wiadomości Lekarskie: Organ Polskiego Towarzystwa Lekarskiego
https://www.readbyqxmd.com/read/27677248/neural-progenitor-cells-rptor-ablation-impairs-development-but-benefits-to-seizure-induced-behavioral-abnormalities
#11
Ling-Lin Chen, Mei-Ling Wu, Feng Zhu, Jie-Jing Kai, Jing-Yin Dong, Xi-Mei Wu, Ling-Hui Zeng
AIMS: Previous study suggests that mTOR signaling pathway may play an important role in epileptogenesis. The present work was designed to explore the contribution of raptor protein to the development of epilepsy and comorbidities. METHODS: Mice with conditional knockout of raptor protein were generated by cross-bred Rptor(flox/flox) mice with nestin-CRE mice. The expression of raptor protein was analyzed by Western blotting in brain tissue samples. Neuronal death and mossy fiber sprouting were detected by FJB staining and Timm staining, respectively...
December 2016: CNS Neuroscience & Therapeutics
https://www.readbyqxmd.com/read/27621721/creutzfeldt-jakob-disease-analysis-of-four-cases
#12
Ali Al Balushi, Marshall W Meeks, Ghazala Hayat, Jafar Kafaie
BACKGROUND: Creutzfeldt-Jakob disease (CJD) is a rare, rapidly progressive neurodegenerative disease that almost always results in death in under a year from onset of symptoms. Here, we report four cases of CJD with different clinical presentations diagnosed at our institution over a 2-year period. CASES: The first patient is an 82-year-old woman who presented with depression, cognitive decline, and word-finding difficulty over 4 weeks. The patient deteriorated neurologically to akinetic mutism and death within 6 weeks of presentation...
2016: Frontiers in Neurology
https://www.readbyqxmd.com/read/27551273/near-infrared-spectroscopy-electroencephalography-based-brain-state-dependent-electrotherapy-a-computational-approach-based-on-excitation-inhibition-balance-hypothesis
#13
Snigdha Dagar, Shubhajit Roy Chowdhury, Raju Surampudi Bapi, Anirban Dutta, Dipanjan Roy
Stroke is the leading cause of severe chronic disability and the second cause of death worldwide with 15 million new cases and 50 million stroke survivors. The poststroke chronic disability may be ameliorated with early neuro rehabilitation where non-invasive brain stimulation (NIBS) techniques can be used as an adjuvant treatment to hasten the effects. However, the heterogeneity in the lesioned brain will require individualized NIBS intervention where innovative neuroimaging technologies of portable electroencephalography (EEG) and functional-near-infrared spectroscopy (fNIRS) can be leveraged for Brain State Dependent Electrotherapy (BSDE)...
2016: Frontiers in Neurology
https://www.readbyqxmd.com/read/27547503/brain-potentials-predict-substance-abuse-treatment-completion-in-a-prison-sample
#14
Brandi C Fink, Vaughn R Steele, Michael J Maurer, Samantha J Fede, Vince D Calhoun, Kent A Kiehl
INTRODUCTION: National estimates suggest that up to 80% of prison inmates meet diagnostic criteria for a substance use disorder. Because more substance abuse treatment while incarcerated is associated with better post-release outcomes, including a reduced risk of accidental overdose death, the stakes are high in developing novel predictors of substance abuse treatment completion in inmate populations. METHODS: Using electroencephalography (EEG), this study investigated stimulus-locked ERP components elicited by distractor stimuli in three tasks (VO-Distinct, VO-Repeated, Go/NoGo) as a predictor of treatment discontinuation in a sample of male and female prison inmates...
August 2016: Brain and Behavior
https://www.readbyqxmd.com/read/27494359/local-brain-activity-persists-during-apparently-generalized-postictal-eeg-suppression
#15
Dirk-Matthias Altenmüller, Andreas Schulze-Bonhage, Christian E Elger, Rainer Surges
OBJECTIVES: Postictal generalized EEG suppression (PGES) frequently occurs after generalized convulsive seizures (GCS) and may be involved in the pathophysiology of sudden unexpected death in epilepsy (SUDEP). It is usually determined using conventional scalp EEG which is likely to miss cerebral activity in deeper brain structures. Here, we examined intracranial EEG activity after GCS to unravel the pattern and extent of local brain activity during apparent PGES on scalp EEG (s-PGES)...
September 2016: Epilepsy & Behavior: E&B
https://www.readbyqxmd.com/read/27482789/american-clinical-neurophysiology-society-guideline-6-minimum-technical-standards-for-eeg-recording-in-suspected-cerebral-death
#16
Mark M Stecker, Dragos Sabau, Lucy Sullivan, Rohit R Das, Olga Selioutski, Frank W Drislane, Tammy N Tsuchida, William O Tatum
This revision to the EEG Guidelines is an update incorporating current EEG technology and practice. The role of the EEG in making the determination of brain death is discussed as are suggested technical criteria for making the diagnosis of electrocerebral inactivity.
August 2016: Journal of Clinical Neurophysiology: Official Publication of the American Electroencephalographic Society
https://www.readbyqxmd.com/read/27465075/a-neonate-with-susceptibility-to-long-qt-syndrome-type-6-who-presented-with-ventricular-fibrillation-and-sudden-unexpected-infant-death
#17
Charles W Sauer, Krishelle L Marc-Aurele
BACKGROUND This is a case of a neonate with susceptibility to long QT syndrome (LQTS) who presented with a sudden unexpected infant death. Experts continue to debate whether universal electrocardiogram (ECG) screening of all newborns is feasible, practical, and cost-effective. CASE REPORT A 19-day-old neonate was found unresponsive by her mother. ECG showed ventricular fibrillation and a combination of a lidocaine drip plus multiple defibrillations converted the rhythm to normal sinus. Unfortunately, MRI brain imaging showed multiple infarcts and EEG showed burst suppression pattern with frequent seizures; life supportive treatment was stopped and the infant died...
July 28, 2016: American Journal of Case Reports
https://www.readbyqxmd.com/read/27464753/hypoglycemia-induced-changes-in-the-electroencephalogram-an-overview
#18
REVIEW
Lykke Blaabjerg, Claus B Juhl
Hypoglycemia is defined by an abnormally low blood glucose level. The condition develops when rates of glucose entry into the systematic circulation are reduced relative to the glucose uptake by the tissues. A cardinal manifestation of hypoglycemia arises from inadequate supply of glucose to the brain, where glucose is the primary metabolic fuel. The brain is one of the first organs to be affected by hypoglycemia. Shortage of glucose in the brain, or neuroglycopenia, results in a gradual loss of cognitive functions causing slower reaction time, blurred speech, loss of consciousness, seizures, and ultimately death, as the hypoglycemia progresses...
November 2016: Journal of Diabetes Science and Technology
https://www.readbyqxmd.com/read/27453817/bedside-functional-brain-imaging-in-critically-ill-children-using-high-density-eeg-source-modeling-and-multi-modal-sensory-stimulation
#19
Danny Eytan, Elizabeth W Pang, Sam M Doesburg, Vera Nenadovic, Bojan Gavrilovic, Peter Laussen, Anne-Marie Guerguerian
Acute brain injury is a common cause of death and critical illness in children and young adults. Fundamental management focuses on early characterization of the extent of injury and optimizing recovery by preventing secondary damage during the days following the primary injury. Currently, bedside technology for measuring neurological function is mainly limited to using electroencephalography (EEG) for detection of seizures and encephalopathic features, and evoked potentials. We present a proof of concept study in patients with acute brain injury in the intensive care setting, featuring a bedside functional imaging set-up designed to map cortical brain activation patterns by combining high density EEG recordings, multi-modal sensory stimulation (auditory, visual, and somatosensory), and EEG source modeling...
2016: NeuroImage: Clinical
https://www.readbyqxmd.com/read/27453757/role-of-the-biomarkers-for-the-diagnosis-of-creutzfeldt-jakob-disease
#20
A Dulamea, E Solomon
OBJECTIVE: Sporadic Creutzfeldt-Jakob disease (CJD) is a human prion disease, rapidly progressive and fatal, characterized by spongiform encephalopathy. The characteristic triad of signs - rapidly progressive dementia, myoclonus and periodic sharp wave complexes (PSWC) on electroencephalography (EEG) - usually appear in the late stages of the disease. The clinical diagnosis of CJD ante-mortem involves the exclusion of the rapidly progressive non-prionic dementias, the definitive diagnosis requiring brain tissue confirmation...
April 2016: Journal of Medicine and Life
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