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Neurophysiological monitoring

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https://www.readbyqxmd.com/read/29452324/microsurgical-clipping-of-intracranial-aneurysms-assisted-by-neurophysiological-monitoring-microvascular-flow-probe-and-icg-va-outcomes-and-intraoperative-data-on-a-multimodal-strategy
#1
Alessandro Della Puppa, Marta Rossetto, Francesco Volpin, Oriela Rustemi, Alberto Grego, Alessandra Gherardi, Riccardo Ortolan, Francesco Causin, Marina Munari, Renato Scienza
OBJECTVE: The aim of this study is to report data on a multimodal monitoring strategy based on the intraoperative use of neurophysiological monitoring, flowmetry by microflow probe and intraoperative indocyanine green-videoangiography (ICG-VA) during microsurgical clipping of intracranial aneurysms. METHODS: This retrospective analysis was performed on 85 consecutive patients undergoing clipping of 96 intracranial aneurysms with the present monitoring strategy. Patient outcomes were evaluated by assessing rate of aneurysm exclusion and post-operative occurrence of ischemic injury...
February 13, 2018: World Neurosurgery
https://www.readbyqxmd.com/read/29449828/understanding-spreading-depression-from-headache-to-sudden-unexpected-death
#2
REVIEW
Olga Cozzolino, Maria Marchese, Francesco Trovato, Enrico Pracucci, Gian Michele Ratto, Maria Gabriella Buzzi, Federico Sicca, Filippo M Santorelli
Spreading depression (SD) is a neurophysiological phenomenon characterized by abrupt changes in intracellular ion gradients and sustained depolarization of neurons. It leads to loss of electrical activity, changes in the synaptic architecture, and an altered vascular response. Although SD is often described as a unique phenomenon with homogeneous characteristics, it may be strongly affected by the particular triggering event and by genetic background. Furthermore, SD may contribute differently to the pathogenesis of widely heterogeneous clinical conditions...
2018: Frontiers in Neurology
https://www.readbyqxmd.com/read/29444973/eight-hours-adaptive-deep-brain-stimulation-in-patients-with-parkinson-disease
#3
Mattia Arlotti, Sara Marceglia, Guglielmo Foffani, Jens Volkmann, Andres M Lozano, Elena Moro, Filippo Cogiamanian, Marco Prenassi, Tommaso Bocci, Francesca Cortese, Paolo Rampini, Sergio Barbieri, Alberto Priori
OBJECTIVES: To assess the feasibility and clinical efficacy of local field potentials (LFPs)-based adaptive deep brain stimulation (aDBS) in patients with advanced Parkinson disease (PD) during daily activities in an open-label, nonblinded study. METHODS: We monitored neurophysiologic and clinical fluctuations during 2 perioperative experimental sessions lasting for up to 8 hours. On the first day, the patient took his/her daily medication, while on the second, he/she additionally underwent subthalamic nucleus aDBS driven by LFPs beta band power...
February 14, 2018: Neurology
https://www.readbyqxmd.com/read/29408593/acute-compartment-syndrome-as-a-complication-of-the-use-of-intraoperative-neuromonitoring-needle-electrodes
#4
Ilyas M Eli, Nicholas T Gamboa, Jian Guan, Philipp Taussky
BACKGROUND: The use of intraoperative neurophysiologic monitoring (IOM) has become commonplace in many neurosurgical procedures as a tool to reduce the risk of complications through the early identification of reversible neurologic compromise. Although complications related to IOM itself are exceedingly rare, recognizing their clinical presentation in the postoperative neurosurgical patient is essential for the early identification and implementation of appropriate treatment. CASE DESCRIPTION: The authors present a case report of a patient who developed postoperative acute compartment syndrome in the right arm after placement of neuromonitoring needles for routine IOM during endovascular treatment of a left internal carotid artery aneurysm...
February 3, 2018: World Neurosurgery
https://www.readbyqxmd.com/read/29388674/pain-self-management-plus-nurse-led-support-in-young-adults-with-irritable-bowel-syndrome-study-protocol-for-a-pilot-randomized-control-trial
#5
Xiaomei Cong, Divya Ramesh, Mallory Perry, Wanli Xu, Katherine M Bernier, Erin E Young, Stephen Walsh, Angela Starkweather
Irritable bowel syndrome (IBS) is a functional gut disorder that typically manifests in early adult years. IBS patients report that pain is the most distressing symptom with the greatest impact on quality of life. Pain-sensitivity genes and the gut microbiome may influence severity of symptoms as well as response to self-management (SM) interventions. Based on current understanding of the science of SM, pain neurophysiology, and the gut-brain axis, our team developed a pain SM intervention to be added to evidence-based self-management instruction to increase the individual's SM knowledge and skills (self-efficacy, self-regulation, and goal-setting)...
February 1, 2018: Research in Nursing & Health
https://www.readbyqxmd.com/read/29376882/relative-wave-energy-based-adaptive-neuro-fuzzy-inference-system-model-for-the-estimation-of-depth-of-anaesthesia
#6
V K Benzy, E A Jasmin, Rachel Cherian Koshy, Frank Amal, K P Indiradevi
The advancement in medical research and intelligent modeling techniques has lead to the developments in anaesthesia management. The present study is targeted to estimate the depth of anaesthesia using cognitive signal processing and intelligent modeling techniques. The neurophysiological signal that reflects cognitive state of anaesthetic drugs is the electroencephalogram signal. The information available on electroencephalogram signals during anaesthesia are drawn by extracting relative wave energy features from the anaesthetic electroencephalogram signals...
2018: Journal of Integrative Neuroscience
https://www.readbyqxmd.com/read/29375947/the-impact-of-neurophysiological-intraoperative-monitoring-during-spinal-cord-and-spine-surgery-a-critical-analysis-of-121-cases
#7
Tarik Ibrahim, Oliver Mrowczynski, Omar Zalatimo, Vernon Chinchilli, Jonas Sheehan, Robert Harbaugh, Elias Rizk
Neuromonitoring has been utilized during spinal surgery to assess the function of the spinal cord in an effort to prevent intraoperative injury. Although its use is widespread, no clear benefit has been demonstrated. Our goal in this study was to interrogate the value of intraoperative neuromonitoring in decreasing the severity and rate of neurological injury during and after spinal surgery. Here we describe our experience of 121 patients who underwent spinal cord procedures with the combination of intraoperative neuromonitoring, to determine its ability to detect neurological changes and the specificity and sensitivity in this setting...
November 19, 2017: Curēus
https://www.readbyqxmd.com/read/29373396/clinical-neurophysiology-training-in-a-developing-country-institutional-resources-and-profiles
#8
Arturo G Sámano, José D Ochoa Mena, Silvana P Padilla, Gerardo R Acevedo, José M Orenday Barraza, Daniel San-Juan
PURPOSE: The purpose of this study was to describe the characteristics and preferences of clinical neurophysiology (CN) fellows, as well as the resources available for their training, in a developing country such as Mexico. METHODS: An online survey (25 questions) was given to Mexican CN fellows from May to June 2017, covering their reasons for choosing the CN subspecialty, their activities, future plans, institutional resources, and administrative staff. Descriptive statistics were used...
January 23, 2018: Journal of Clinical Neurophysiology: Official Publication of the American Electroencephalographic Society
https://www.readbyqxmd.com/read/29369665/distress-intolerance-modulation-of-neurophysiological-markers-of-cognitive-control-during-a-complex-go-no-go-task
#9
Richard J Macatee, Brian J Albanese, Kevin Clancy, Nicholas P Allan, Edward M Bernat, Jesse R Cougle, Norman B Schmidt
Distress intolerance (DI), a trait-like individual difference reflective of the inability to endure aversive affective states, is relevant to multiple forms of psychopathology, but its relations to theoretically relevant neurobiological systems have received little attention. Altered cognitive control-related neurobiology has been theorized to underlie individual differences in DI, but little empirical work has been conducted. To test this hypothesis, baseline data from a large community sample with elevated high levels of emotional psychopathology and comorbidity was utilized (N = 256)...
January 2018: Journal of Abnormal Psychology
https://www.readbyqxmd.com/read/29369096/electroencephalography-and-brain-oxygenation-monitoring-in-the-perioperative-period
#10
Thomas W L Scheeren, Merel H Kuizenga, Holger Maurer, Michel M R F Struys, Matthias Heringlake
Maintaining brain function and integrity is a pivotal part of anesthesiological practice. The present overview aims to describe the current role of the 2 most frequently used monitoring methods for evaluation brain function in the perioperative period, ie, electroencephalography (EEG) and brain oxygenation monitoring. Available evidence suggests that EEG-derived parameters give additional information about depth of anesthesia for optimizing anesthetic titration. The effects on reduction of drug consumption or recovery time are heterogeneous, but most studies show a reduction of recovery times if anesthesia is titrated along processed EEG...
January 23, 2018: Anesthesia and Analgesia
https://www.readbyqxmd.com/read/29366689/in-vivo-study-of-teratogenic-and-anticonvulsant-effects-of-antiepileptics-drugs-in-zebrafish-embryo-and-larvae
#11
C S Martinez, D A Feas, M Siri, D E Igartúa, N S Chiaramoni, SdV Alonso, M J Prieto
Epilepsy is a neurological disorder treated with antiepileptic drugs (AEDs). Since AEDs are administered in women in childbearing age, it is critical to study if drugs are capable of inducing developmental toxicity. Along the bibliography available, there is no research comparing teratogenicity and anticonvulsant effect within the same study. In the present study, we evaluated the teratogenic and anticonvulsant effects of six different AEDs: carbamazepine, levetiracetam, lamotrigine, phenobarbital, phenytoin and valproic acid...
January 20, 2018: Neurotoxicology and Teratology
https://www.readbyqxmd.com/read/29361259/the-establishment-of-an-anaesthetist-managed-intraoperative-neurophysiological-monitoring-service-and-initial-outcome-data
#12
B L Olesnicky, R J D'Souza, D Jayram, Omo Kim, A Rehak
Neurophysiological monitoring has been recommended to reduce the risk of neurological damage during a wide variety of surgeries. While the concept of an anaesthesia-led intraoperative neurophysiological monitoring (IONM) service is not new, the quality of this service provision has not been studied. In this article, we present our experience with the establishment of this service, and the results of our audit of 302 cases monitored over the initial four years. Our results identified that an anaesthesia-led IONM service was able to achieve a reliable signal in 95...
January 2018: Anaesthesia and Intensive Care
https://www.readbyqxmd.com/read/29358565/microglia-activation-mediated-by-toll-like-receptor-4-impairs-brain-white-matter-tracts-in-rats
#13
Xing-Long Yang, Jing-Dong Zhang, Lian Duan, Huan-Gui Xiong, Yan-Ping Jiang, Hou-Cheng Liang
Microglia activation and white matter injury coexist after repeated episodes of mild brain trauma and ischemic stroke. Axon degeneration and demyelination can activate microglia; however, it is unclear whether early microglia activation can impair the function of white matter tracts and lead to injury. Rat corpus callosum (CC) slices were treated with lipopolysaccharide (LPS) or LPS + Rhodobacter sphaeroides (RS)-LPS that is a toll-like receptor 4 (TLR-4) antagonist. Functional changes reflected by the change of axon compound action potentials (CAPs) and the accumulation of β-amyloid precursor protein (β-APP) in CC nerve fibers...
November 1, 2017: Journal of Biomedical Research
https://www.readbyqxmd.com/read/29357471/predictive-monitoring-of-actions-eeg-recordings-in-virtual-reality
#14
Duru Gun Ozkan, Rachele Pezzetta
Error-related Negativity (ERN) is a signal that is associated with error detection. Joch and colleagues (Journal of Neurophysiology 118:486-495, 2017) successfully separated the ERN as a response to online prediction error from feedback updates. We discuss the role of ERN in action, and suggest insights from VR techniques; we consider the potential benefit of self-evaluation in determining the mechanisms of ERN amplitude; finally we review the oscillatory activity that has been claimed to accompany ERN.
December 20, 2017: Journal of Neurophysiology
https://www.readbyqxmd.com/read/29355389/attentional-dysfunction-and-recovery-in-concussion-effects-on-the-p300m-and-contingent-magnetic-variation
#15
Lauren Petley, Tim Bardouille, Darrell Chiasson, Patrick Froese, Steve Patterson, Aaron Newman, Antonina Omisade, Steven Beyea
PRIMARY OBJECTIVE: To examine the effect of concussion on indices of attention using magnetoencephalography. METHODS AND PROCEDURES: Thirteen patients were recruited from the emergency department and scanned within 3-6 days of injury. Five returned for follow-up scans one and three months post-injury. Thirteen healthy controls also completed testing. During MEG acquisition, participants performed the Attention Network Test (ANT). Cognitive evoked responses to this task include a cue-evoked P300m, a contingent magnetic variation (CMV) and a target-evoked P300m...
January 22, 2018: Brain Injury: [BI]
https://www.readbyqxmd.com/read/29349346/characteristics-of-electroencephalogram-signatures-in-sedated-patients-induced-by-various-anesthetic-agents
#16
REVIEW
Byung-Moon Choi
Devices that monitor the depth of hypnosis based on the electroencephalogram (EEG) have long been commercialized, and clinicians use these to titrate the dosage of hypnotic agents. However, these have not yet been accepted as standard monitoring devices for anesthesiology. The primary reason is that the use of these monitoring devices does not completely prevent awareness during surgery, and the development of these devices has not taken into account the neurophysiological mechanisms of hypnotic agents, thus making it possible to show different levels of unconsciousness in the same brain status...
December 2017: Journal of Dental Anesthesia and Pain Medicine
https://www.readbyqxmd.com/read/29348110/the-role-of-ethnicity-and-environment-in-the-regulation-of-response-to-sensory-stimulus-in-children-protocol-and-pilot-findings-of-a-neurophysiological-study
#17
Ivan Neil Gomez, Cynthia Yy Lai, Chetwyn Ch Chan, Hector Wh Tsang
BACKGROUND: The ability to regulate the response to sensory stimuli has been associated with successful behavioral patterns necessary for daily activities. However, it is not known whether a child's ethnicity and environment can influence autonomic regulatory mechanisms. OBJECTIVE: This study aims to explore the role of ethnicity and environment in the regulation of responses to sensory stimuli in children. METHODS: In this study, we intend to recruit 128 children from different ethnic groups or environment contexts as follows: (1) 32 typically developing Chinese children living in Hong Kong; (2) 32 typically developing Filipino children living in Hong Kong; (3) 32 typically developing Filipino children who are living in urban areas; and (4) 32 typically developing Filipino children who are living in rural areas in Philippines...
January 18, 2018: JMIR Research Protocols
https://www.readbyqxmd.com/read/29341513/investment-in-epilepsy-monitoring-units-improves-epilepsy-care-experience-in-a-regional-neuroscience-centre
#18
R N McGinty, D J Costello, B McNamara, P Kinirons, B J Sweeney
An evaluation of the clinical yield of inpatient long-term video-EEG (vEEG) in a new epilepsy monitoring unit (EMU) was undertaken, with findings compared to the centre's prior method of bedside vEEG recording in a standard neurology ward, as reported in 2004. A retrospective analysis of neurophysiology reports for all adults who underwent elective vEEG monitoring in the EMU at Cork University Hospital between January 2015 and July 2016 was conducted. Of 115 vEEG studies in the EMU, 100 (87.0%) were deemed diagnostically conclusive, 14 (12...
August 8, 2017: Irish Medical Journal
https://www.readbyqxmd.com/read/29334639/vestibular-schwannoma-and-hearing-preservation-usefulness-of-level-specific-ce-chirp-abr-monitoring-a-retrospective-study-on-25-cases-with-preoperative-socially-useful-hearing
#19
Luciano Mastronardi, Ettore Di Scipio, Guglielmo Cacciotti, Raffaelino Roperto
BACKGROUND AND OBJECTIVES: Decision-making regarding the therapy of vestibular schwannoma (VS) changed over the last decades, during which curative microsurgery has been promoted. Goals of VS microsurgery are: extensive resection, facial nerve (FN) preservation and, in selected cases, hearing preservation (HP). The aim of this study is to evaluate postoperative HP with reference to tumor size in patients operated on with Level Specific (LS)-CE-Chirp® ABR monitoring. PATIENTS AND METHODS: Twentyfive consecutive patients with socially useful hearing (SUH) underwent VS microneurosurgery by retrosigmoid (RS) approach...
February 2018: Clinical Neurology and Neurosurgery
https://www.readbyqxmd.com/read/29313181/intraoperative-neurophysiological-monitoring-during-spinal-surgery-technical-review-in-open-and-minimally-invasive-approaches
#20
REVIEW
Fabio Cofano, Francesco Zenga, Marco Mammi, Roberto Altieri, Nicola Marengo, Marco Ajello, Paolo Pacca, Antonio Melcarne, Carola Junemann, Alessandro Ducati, Diego Garbossa
Neurophysiological monitoring is of undoubted value for the intraoperative safety of neurosurgical procedures. Widely developed and used for cranial surgery, it is equally as effective, though perhaps less commonly employed, for spinal pathology. The most frequently used techniques for intraoperative monitoring during spinal surgery include somatosensory evoked potentials (SSEPs), motor evoked potentials (MEPs) and electromyography, which can either be spontaneous free-running (sEMG) or triggered (tEMG). The knowledge of the benefits and limitations of each modality is essential in optimising the value of intraoperative monitoring during spinal procedures...
January 8, 2018: Neurosurgical Review
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