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continuous eeg monitoring

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https://www.readbyqxmd.com/read/29139014/the-ictal-interictal-continuum-to-treat-or-not-to-treat-and-how
#1
Clio Rubinos, Alexandra S Reynolds, Jan Claassen
Continuous electroencephalography (cEEG) monitoring is becoming increasingly used in neurologic and non-neurologic intensive care units (ICUs). Non-convulsive seizures (NCSz) and periodic discharges (PDs) are commonly seen in critically ill patients. Some of these PD patterns, also known as the ictal-interictal continuum (IIC), are associated with an increased risk of seizures and poor outcome. However, we do not fully understand the significance of these periodic patterns and the decision of how aggressively to treat remains controversial...
November 14, 2017: Neurocritical Care
https://www.readbyqxmd.com/read/29124529/eeg-indices-correlate-with-sustained-attention-performance-in-patients-affected-by-diffuse-axonal-injury
#2
Stefania Coelli, Riccardo Barbieri, Gianluigi Reni, Claudio Zucca, Anna Maria Bianchi
The aim of this study is to assess the ability of EEG-based indices in providing relevant information about cognitive engagement level during the execution of a clinical sustained attention (SA) test in healthy volunteers and DAI (diffused axonal injury)-affected patients. We computed three continuous power-based engagement indices (P β /P α , 1/P α , and P β / (P α + P θ )) from EEG recordings in a control group (n = 7) and seven DAI-affected patients executing a 10-min Conners' "not-X" continuous performance test (CPT)...
November 9, 2017: Medical & Biological Engineering & Computing
https://www.readbyqxmd.com/read/29123833/clinical-characteristics-of-non-convulsive-status-epilepticus-diagnosed-by-simplified-continuous-electroencephalogram-monitoring-at-an-emergency-intensive-care-unit
#3
Satoshi Egawa, Toru Hifumi, Kenya Kawakita, Arisa Manabe, Ryuta Nakashima, Hikari Matsumura, Tomoya Okazaki, Hideyuki Hamaya, Natsuyo Shinohara, Hajime Shishido, Koshiro Takano, Yuko Abe, Masanobu Hagiike, Yuichi Kubota, Yasuhiro Kuroda
Aim: The present study aimed to elucidate the clinical characteristics of non-convulsive status epilepticus (NCSE) in patients with altered mental status (AMS). Methods: This single-center retrospective study comprised 149 patients who were hospitalized between March 1, 2015 and September 30, 2015 at the emergency intensive care unit (ICU) of the Kagawa University Hospital (Kagawa, Japan). The primary outcome was NCSE incidence. The secondary outcome was the comparison of duration of ICU stay, hospital stay, and a favorable neurological outcome, as assessed using the modified Rankin Scale score, at discharge from our hospital between patients with and without NCSE...
January 2017: Acute Medicine & Surgery
https://www.readbyqxmd.com/read/29097134/clinical-course-and-long-term-outcome-in-children-with-alteration-of-consciousness-underwent-continuous-eeg-monitoring-a-prospective-observational-study-in-thailand
#4
Thitiporn Fangsaad, Siriluk Assawabumrungkul, Anannit Visudtibhan
The study aims to explore the clinical course and long-term outcome in children with altered consciousness who underwent cEEG monitoring. A prospective observational study was conducted in neonatal and pediatric intensive care units from 1 September 2014 through 31 March 2017. Standard 10-20 cEEG monitoring was applied. Twenty children were included in this study. Their ages ranged from 1 day to 142.7 months (median age 40.6 months). Continuous EEG was commenced from 5 h to 5 days after the onset of alteration of consciousness (median 40...
October 30, 2017: Journal of Clinical Neuroscience: Official Journal of the Neurosurgical Society of Australasia
https://www.readbyqxmd.com/read/29071301/action-monitoring-cortical-activity-coupled-to-submovements
#5
Michael Pereira, Aleksander Sobolewski, José Del R Millán
Numerous studies have examined neural correlates of the human brain's action-monitoring system during experimentally segmented tasks. However, it remains unknown how such a system operates during continuous motor output when no experimental time marker is available (such as button presses or stimulus onset). We set out to investigate the electrophysiological correlates of action monitoring when hand position has to be repeatedly monitored and corrected. For this, we recorded high-density electroencephalography (EEG) during a visuomotor tracking task during which participants had to follow a target with the mouse cursor along a visible trajectory...
September 2017: ENeuro
https://www.readbyqxmd.com/read/29067633/implementation-of-continuous-video-electroencephalography-at-a-community-hospital-enhances-care-and-reduces-costs
#6
Brad J Kolls, Brian E Mace, Keith E Dombrowski
BACKGROUND: Despite data indicating the importance of continuous video-electroencephalography (cvEEG) monitoring, adoption has been slow outside major academic centers. Barriers to adoption include the need for technologists, equipment, and cvEEG readers. Advancements in lower-cost lead placement templates and commercial systems with remote review may reduce barriers to allow community centers to implement cvEEG. Here, we report our experience, lessons learned, and financial impact of implementing a community hospital cvEEG-monitoring program...
October 24, 2017: Neurocritical Care
https://www.readbyqxmd.com/read/29060482/improved-neonatal-seizure-detection-using-adaptive-learning
#7
A H Ansari, P J Cherian, A Caicedo, M De Vos, G Naulaers, S Van Huffel
In neonatal intensive care units performing continuous EEG monitoring, there is an unmet need for around-the-clock interpretation of EEG, especially for recognizing seizures. In recent years, a few automated seizure detection algorithms have been proposed. However, these are suboptimal in detecting brief-duration seizures (<; 30s), which frequently occur in neonates with severe neurological problems. Recently, a multi-stage neonatal seizure detector, composed of a heuristic and a data-driven classifier was proposed by our group and showed improved detection of brief seizures...
July 2017: Conference Proceedings: Annual International Conference of the IEEE Engineering in Medicine and Biology Society
https://www.readbyqxmd.com/read/29059985/permanency-analysis-on-human-electroencephalogram-signals-for-pervasive-brain-computer-interface-systems
#8
Koosha Sadeghi, Junghyo Lee, Ayan Banerjee, Javad Sohankar, Sandeep K S Gupta
Brain-Computer Interface (BCI) systems use some permanent features of brain signals to recognize their corresponding cognitive states with high accuracy. However, these features are not perfectly permanent, and BCI system should be continuously trained over time, which is tedious and time consuming. Thus, analyzing the permanency of signal features is essential in determining how often to repeat training. In this paper, we monitor electroencephalogram (EEG) signals, and analyze their behavior through continuous and relatively long period of time...
July 2017: Conference Proceedings: Annual International Conference of the IEEE Engineering in Medicine and Biology Society
https://www.readbyqxmd.com/read/29058341/multichannel-wearable-fnirs-eeg-system-for-long-term-clinical-monitoring
#9
Ali Kassab, Jérôme Le Lan, Julie Tremblay, Phetsamone Vannasing, Mahya Dehbozorgi, Philippe Pouliot, Anne Gallagher, Frédéric Lesage, Mohamad Sawan, Dang Khoa Nguyen
Continuous brain imaging techniques can be beneficial for the monitoring of neurological pathologies (such as epilepsy or stroke) and neuroimaging protocols involving movement. Among existing ones, functional near-infrared spectroscopy (fNIRS) and electroencephalography (EEG) have the advantage of being noninvasive, nonobstructive, inexpensive, yield portable solutions, and offer complementary monitoring of electrical and local hemodynamic activities. This article presents a novel system with 128 fNIRS channels and 32 EEG channels with the potential to cover a larger fraction of the adult superficial cortex than earlier works, is integrated with 32 EEG channels, is light and battery-powered to improve portability, and can transmit data wirelessly to an interface for real-time display of electrical and hemodynamic activities...
October 23, 2017: Human Brain Mapping
https://www.readbyqxmd.com/read/29052706/association-of-an-electroencephalography-based-risk-score-with-seizure-probability-in-hospitalized-patients
#10
Aaron F Struck, Berk Ustun, Andres Rodriguez Ruiz, Jong Woo Lee, Suzette M LaRoche, Lawrence J Hirsch, Emily J Gilmore, Jan Vlachy, Hiba Arif Haider, Cynthia Rudin, M Brandon Westover
Importance: Continuous electroencephalography (EEG) use in critically ill patients is expanding. There is no validated method to combine risk factors and guide clinicians in assessing seizure risk. Objective: To use seizure risk factors from EEG and clinical history to create a simple scoring system associated with the probability of seizures in patients with acute illness. Design, Setting, and Participants: We used a prospective multicenter (Emory University Hospital, Brigham and Women's Hospital, and Yale University Hospital) database containing clinical and electrographic variables on 5427 continuous EEG sessions from eligible patients if they had continuous EEG for clinical indications, excluding epilepsy monitoring unit admissions...
October 9, 2017: JAMA Neurology
https://www.readbyqxmd.com/read/29029284/the-influence-of-co2-on-genioglossus-muscle-after-discharge-following-arousal-from-sleep
#11
Jennifer M Cori, Peter D Rochford, Fergal J O'Donoghue, John Trinder, Amy S Jordan
Objectives: Ventilatory after-discharge (sustained elevation of ventilation following stimulus removal) occurs during sleep but not when hypocapnia is present. Genioglossus after-discharge also occurs during sleep, but CO2 effects have not been assessed. The relevance is that postarousal after-discharge may protect against upper airway collapse. This study aimed to determine whether arousal elicits genioglossus after-discharge that persists into sleep, and whether it is influenced by CO2...
November 1, 2017: Sleep
https://www.readbyqxmd.com/read/29023305/insights-into-the-therapeutic-effect-of-responsive-neurostimulation-assessed-with-scalp-eeg-recording-a-case-report
#12
Maria Jose Bruzzone, Naoum Issa, Sandra Rose, Peter Warnke, Vernon L Towle, James X Tao, Shasha Wu
The responsive neurostimulation system (RNS) is the first closed-loop neurostimulator approved as an adjunctive treatment for adults with medically refractory focal epilepsy from no more than two seizure foci. In addition to its therapeutic effect, it provides chronic intracranial EEG recordings, with limited storage capacity. Long-term monitoring with scalp EEG recordings can provide additional information regarding seizure patterns, the efficacy of RNS stimulation in aborting individual seizures, and the net effect of RNS on seizure control...
October 10, 2017: Journal of Clinical Neurophysiology: Official Publication of the American Electroencephalographic Society
https://www.readbyqxmd.com/read/29021168/functional-ultrasound-imaging-of-brain-activity-in-human-newborns
#13
Charlie Demene, Jérome Baranger, Miguel Bernal, Catherine Delanoe, Stéphane Auvin, Valérie Biran, Marianne Alison, Jérome Mairesse, Elisabeth Harribaud, Mathieu Pernot, Mickael Tanter, Olivier Baud
Functional neuroimaging modalities are crucial for understanding brain function, but their clinical use is challenging. Recently, the use of ultrasonic plane waves transmitted at ultrafast frame rates was shown to allow for the spatiotemporal identification of brain activation through neurovascular coupling in rodents. Using a customized flexible and noninvasive headmount, we demonstrate in human neonates that real-time functional ultrasound imaging (fUSI) is feasible by combining simultaneous continuous video-electroencephalography (EEG) recording and ultrafast Doppler (UfD) imaging of the brain microvasculature...
October 11, 2017: Science Translational Medicine
https://www.readbyqxmd.com/read/28974996/monitoring-pressure-augmentation-in-patients-with-ischemic-penumbra-using-continuous-electroencephalogram-three-cases-and-a-review-of-the-literature
#14
Christopher R Newey, Vikas Gupta, Agnieszka A Ardelt
BACKGROUND: Continuous electroencephalography (CEEG) is a sensitive, noninvasive surrogate monitor of cerebral blood flow (CBF). Changes in CBF can be seen as changes in the frequencies on the CEEG. This case series suggests that increase in CEEG frequencies may be used to detect improved CBF following pressure augmentation such as with treatment of vasospasm from subarachnoid hemorrhage (SAH) or acute thrombosis from ischemic stroke. The application of this observation to clinical decision-making has not been clearly defined and requires further study...
October 2017: Neurohospitalist
https://www.readbyqxmd.com/read/28962812/new-developments-in-refractory-status-epilepticus
#15
REVIEW
Sudhir Datar
Status epilepticus (SE) is a medical emergency and presents with either a continuous prolonged seizure or multiple seizures without full recovery of consciousness in between them. The goals of treatment are prompt recognition, early seizure termination, and simultaneous evaluation for any potentially treatable cause. Improved understanding of the pathophysiology has led to a more practical definition. New data have emerged regarding the safety and efficacy of alternative agents, which are increasingly used in the management of these patients...
November 2017: Neurologic Clinics
https://www.readbyqxmd.com/read/28960513/local-body-cooling-to-improve-sleep-quality-and-thermal-comfort-in-a-hot-environment
#16
L Lan, X L Qian, Z W Lian, Y B Lin
The effects of local body cooling on thermal comfort and sleep quality in a hot environment were investigated in an experiment with 16 male subjects. Sleep quality was evaluated subjectively, using questionnaires completed in the morning, and objectively, by analysis of electroencephalogram (EEG) signals that were continuously monitored during the sleeping period. Compared with no cooling, the largest improvement in thermal comfort and sleep quality was observed when the back and head (neck) were both cooled at a room temperature of 32°C...
September 28, 2017: Indoor Air
https://www.readbyqxmd.com/read/28959196/continuous-monitoring-via-tethered-electroencephalography-of-spontaneous-recurrent-seizures-in-mice
#17
Na-Ryum Bin, Hongmei Song, Chiping Wu, Marcus Lau, Shuzo Sugita, James H Eubanks, Liang Zhang
We describe here a simple, cost-effective apparatus for continuous tethered electroencephalographic (EEG) monitoring of spontaneous recurrent seizures in mice. We used a small, low torque slip ring as an EEG commutator, mounted the slip ring onto a standard mouse cage and connected rotary wires of the slip ring directly to animal's implanted headset. Modifications were made in the cage to allow for a convenient installation of the slip ring and accommodation of animal ambient activity. We tested the apparatus for hippocampal EEG recordings in adult C57 black mice...
2017: Frontiers in Behavioral Neuroscience
https://www.readbyqxmd.com/read/28929921/clinical-implications-of-interictal-epileptiform-discharges-in-cognitive-functioning-in-cec-syndrome-with-evolution-into-epileptic-encephalopathy
#18
Paolo Bonanni, Susanna Negrin, Lisa Antoniazzi, Martina Da Rold, Franco Fabbro, Anna Serafini
In epileptic encephalopathies (EE), interictal epileptiform discharges (IEDs) contribute to cognitive impairment. The EE process has been studied in a patient affected by epilepsy with occipital calcification and celiac disease (CEC syndrome) by combining the administration of brain area stimulus specific (visual and auditory) reaction times (RT) during continuous EEG monitoring with the off-line reconstruction of auditory and visual evoked potentials (EP). Visual RT and VEP were abnormal only if recorded concomitantly to the IEDs...
September 20, 2017: Neurocase
https://www.readbyqxmd.com/read/28873072/amplitude-integrated-eeg-and-brain-sparing-in-preterm-small-for-gestational-age-infants
#19
Isabel Benavente-Fernández, Simón P Lubián-López, Pamela Zafra-Rodríguez, Almudena Alonso-Ojembarrena, Antonio Segado-Arenas, Alfonso M Lechuga-Sancho
PURPOSE: Preterm small-for-gestational-age (SGA) infants are at risk for a high mortality rate and impaired cognitive development. Only a few studies have focused on amplitude-integrated EEG (aEEG) in preterm SGA infants. They have been shown to have a slower rate of brain maturation, but these findings have not consistently been related to neurodevelopmental outcomes. The aim of our study was to evaluate early aEEG monitoring in SGA compared with adequate-for-gestational-age preterms...
September 2017: Journal of Clinical Neurophysiology: Official Publication of the American Electroencephalographic Society
https://www.readbyqxmd.com/read/28868196/novel-approach-to-continuous-neurophysiological-monitoring-during-surgery-of-peripheral-nerve-tumors
#20
Ángel Saponaro-González, Pedro Javier Pérez-Lorensu
BACKGROUND: Intraoperative neurophysiological monitoring (IONM) with nerve action potential (NAP) can be useful during peripheral nerve surgery. However, current methodologies are not optimized for continuous recording of the NAP. The use of newer electrodes may make it possible to more conveniently obtain continuous recordings of the NAP during surgery. METHODS: After localizing the nerve of interest and dissecting it from the adjacent soft tissue, two APS(®) (Automatic Periodic Stimulation) electrodes, originally designed for stimulation of the vagus nerve during thyroid surgery, are placed on the nerve on either sides of the tumor for stimulation and recording using two subdermal electroencephalogram (EEG) needles as anode and reference, respectively...
2017: Surgical Neurology International
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