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Journals Journal of Clinical Neurophysi...

Journal of Clinical Neurophysiology : Official Publication of the American Electroencephalographic Society

https://read.qxmd.com/read/38905022/intraoperative-neurophysiological-monitoring-in-tethered-cord-syndrome-surgery-predictive-values-and-clinical-outcome
#1
JOURNAL ARTICLE
Giovanna Squintani, Federica Basaldella, Andrea Badari, Andrea Rasera, Vincenzo Tramontano, Giampietro Pinna, Fabio Moscolo, Christian Soda, Umberto Ricci, Giorgio Ravenna, Francesco Sala
INTRODUCTION: "Tethered cord syndrome" (TCS) refers to a congenital abnormality associated with neurological signs and symptoms. The aim of surgery is to prevent or arrest their progression. This study reports a retrospective case series of tethered cord syndrome surgeries, supported by intraoperative neurophysiological monitoring. METHODS: The case series comprises 50 surgeries for tethered cord syndrome in which multimodal intraoperative neurophysiological monitoring was performed using motor evoked potentials (transcranial motor evoked potentials [TcMEPs]), tibial nerve somatosensory evoked potentials (TNSEPs), and pudendal-anal reflex (PAR)...
June 21, 2024: Journal of Clinical Neurophysiology: Official Publication of the American Electroencephalographic Society
https://read.qxmd.com/read/38904541/normative-data-and-quantile-regression-analysis-of-the-sural-to-radial-nerve-amplitude-ratio
#2
JOURNAL ARTICLE
Kaveh Pourhamidi
PURPOSE: The aim of this study was to establish normative data for the sural-to-radial nerve amplitude ratio (SRAR) and develop a quantile regression model for individualized cutoff values. METHODS: A cohort of 68 healthy individuals (36 female participants) aged 20 to 59 years was recruited. Sensory nerve conduction studies were conducted to measure sural and radial sensory nerve action potential amplitudes. Quantile regression analysis was used to determine the fifth percentile of SRAR after adjusting for age, sex, and other demographic variables...
June 21, 2024: Journal of Clinical Neurophysiology: Official Publication of the American Electroencephalographic Society
https://read.qxmd.com/read/38857411/the-first-100-seconds-of-sleep-of-reegs-can-be-a-reliable-scoring-method-for-d-ee-swas
#3
JOURNAL ARTICLE
Neil Kulkarni, Brett Klamer, Michael Drees, Jaime D Twanow
PURPOSE: Developmental/epileptic encephalopathy with spike wave activation with sleep, formerly known as electrical status epilepticus in sleep, is an electrographic pattern in which the interictal epileptiform activity is augmented by transition to sleep. Recent studies demonstrate the utility of the first 100 seconds of sleep of long-term monitoring (LTM) as a scoring method for electrical status epilepticus in sleep. Our aim was to measure the reliability of the spike-wave index (SWI) of the first 100 seconds of sleep of routine EEG (rEEG) as a tool for diagnosis of developmental/epileptic encephalopathy with spike wave activation with sleep...
June 10, 2024: Journal of Clinical Neurophysiology: Official Publication of the American Electroencephalographic Society
https://read.qxmd.com/read/38857374/reflex-responses-in-muscles-of-the-lower-extremities-elicited-by-transcutaneous-stimulation-of-cauda-equina-part-1-methodology-and-normative-data
#4
JOURNAL ARTICLE
Julija Rimac, Davor Jančuljak, Biserka Kovač, Miloš Jovičić, Josipa Forjan
INTRODUCTION: Transcutaneous electrical stimulation is used to stimulate the dorsal roots of the cauda equina. Multiple elicited responses recorded in the lower extremity muscles are called posterior root muscle reflexes (PRMRs). Normal PRMR values in the muscles of healthy lower extremities have yet to be determined. METHODS: Thirty subjects without known lumbosacral spinal root illness were included in this study. Subsequently, they were subjected to transcutaneous electrical stimulation of the cauda equina...
June 10, 2024: Journal of Clinical Neurophysiology: Official Publication of the American Electroencephalographic Society
https://read.qxmd.com/read/38857370/characteristics-and-usefulness-of-neurophysiological-monitoring-in-corrective-procedures-for-abnormally-curved-spine-in-young-patients
#5
JOURNAL ARTICLE
Avner Michaeli, Sara Miller, Joseph Danto, Harel Arzi, Josh E Schroeder, Dror Ovadia
PURPOSE: To identify and characterize events of deterioration in intraoperative neuromonitoring data during correction procedures for thoracic and lumbar abnormal spinal curvature in young patients. METHODS: Records of 1,127 cases were retrospectively reviewed to identify events with deterioration of the neuromonitoring data. General etiological and demographic variables were summarized, and neuromonitoring events were studied and characterized. RESULTS: Adolescent idiopathic cases were associated with female dominance and older age...
June 10, 2024: Journal of Clinical Neurophysiology: Official Publication of the American Electroencephalographic Society
https://read.qxmd.com/read/38857366/a-comparison-of-automatically-extracted-quantitative-eeg-features-for-seizure-risk-stratification-in-neonatal-encephalopathy
#6
JOURNAL ARTICLE
Jennifer C Keene, Maren E Loe, Talie Fulton, Maire Keene, Michael J Morrissey, Stuart R Tomko, Zachary A Vesoulis, John M Zempel, ShiNung Ching, Réjean M Guerriero
PURPOSE: Seizures occur in up to 40% of neonates with neonatal encephalopathy. Earlier identification of seizures leads to more successful seizure treatment, but is often delayed because of limited availability of continuous EEG monitoring. Clinical variables poorly stratify seizure risk, and EEG use to stratify seizure risk has previously been limited by need for manual review and artifact exclusion. The goal of this study is to compare the utility of automatically extracted quantitative EEG (qEEG) features for seizure risk stratification...
June 10, 2024: Journal of Clinical Neurophysiology: Official Publication of the American Electroencephalographic Society
https://read.qxmd.com/read/38857365/methods-of-evaluating-eeg-reactivity-in-adult-intensive-care-units-a-review
#7
JOURNAL ARTICLE
Jaeho Hwang, Sung-Min Cho, Romergryko Geocadin, Eva K Ritzl
PURPOSE: EEG reactivity (EEG-R) has become widely used in intensive care units for diagnosing and prognosticating patients with disorders of consciousness. Despite efforts toward standardization, including the establishment of terminology for critical care EEG in 2012, the processes of testing and interpreting EEG-R remain inconsistent. METHODS: A review was conducted on PubMed following the Preferred Reporting Items for Systematic Reviews and Meta-Analyses guidelines...
June 10, 2024: Journal of Clinical Neurophysiology: Official Publication of the American Electroencephalographic Society
https://read.qxmd.com/read/38687304/ictal-direct-current-shifts-preceded-much-earlier-than-high-frequency-oscillations-after-status-is-it-the-effect-of-status-or-antiseizure-medication
#8
JOURNAL ARTICLE
Kyoko Kanazawa, Shunsuke Kajikawa, Riki Matsumoto, Miwa Takatani, Mitsuyoshi Nakatani, Masako Daifu-Kobayashi, Hisaji Imamura, Takeharu Kunieda, Susumu Miyamoto, Ryosuke Takahashi, Masao Matsuhashi, Akio Ikeda
PURPOSE: While spikes and sharp waves are considered as markers of epilepsy in conventional electroencephalography, ictal direct current (DC) shifts and high-frequency oscillations (HFOs) appear to be useful biomarkers for epileptogenicity. We analyzed how ictal DC shifts and HFOs were affected by focal status epilepticus and antiseizure medications (ASMs). METHODS: A 20-year-old female patient who underwent long-term intracranial electrode implantation for epilepsy surgery presented with 72 habitual seizures and a focal status epilepticus episode lasting for 4 h...
April 26, 2024: Journal of Clinical Neurophysiology: Official Publication of the American Electroencephalographic Society
https://read.qxmd.com/read/38687298/late-onset-findings-during-extended-eeg-monitoring-are-rare-in-critically-ill-children
#9
JOURNAL ARTICLE
France W Fung, Darshana S Parikh, Kathleen Walsh, Mark P Fitzgerald, Shavonne L Massey, Alexis A Topjian, Nicholas S Abend
PURPOSE: Electrographic seizures (ES) are common in critically ill children undergoing continuous EEG (CEEG) monitoring, and previous studies have aimed to target limited CEEG resources to children at highest risk of ES. However, previous studies have relied on observational data in which the duration of CEEG was clinically determined. Thus, the incidence of late occurring ES is unknown. The authors aimed to assess the incidence of ES for 24 hours after discontinuation of clinically indicated CEEG...
April 26, 2024: Journal of Clinical Neurophysiology: Official Publication of the American Electroencephalographic Society
https://read.qxmd.com/read/38587485/cardiac-rhythm-aberrations-in-subacute-sclerosing-panencephalitis-insights-from-heart-rate-variability-analysis
#10
JOURNAL ARTICLE
Lakshminarayanapuram Gopal Viswanathan, Bittanakurike C Nagaraj, Ravindranadh Mundlamuri, Kandavel Thennarasu, Raghavendra Kenchaiah, Ajay Asranna, Madhu Nagappa, Doniparthi Seshagiri, Jitender Saini, Sanjib Sinha
PURPOSE: Subacute sclerosing panencephalitis (SSPE) is a fatal neurological disorder resulting from persistent measles virus infection within the brain. Although neurological manifestations have been well-documented, the impact of SSPE on cardiac autonomic function, assessed through heart rate variability (HRV), remains understudied. METHODS: In this prospective single-center study conducted from January 2022 to March 2023 in Southern India, 30 consecutive SSPE patients and age- and sex-matched controls underwent electrocardiogram recordings for HRV analysis...
April 3, 2024: Journal of Clinical Neurophysiology: Official Publication of the American Electroencephalographic Society
https://read.qxmd.com/read/38710040/detection-of-language-lateralization-using-spectral-analysis-of-eeg
#11
JOURNAL ARTICLE
Kerry C Nix, Ahyuda Oh, Beattie S Goad, Wei Wu, Molly V Lucas, Fiona M Baumer
PURPOSE: Language lateralization relies on expensive equipment and can be difficult to tolerate. We assessed if lateralized brain responses to a language task can be detected with spectral analysis of electroencephalography (EEG). METHODS: Twenty right-handed, neurotypical adults (28 ± 10 years; five males) performed a verb generation task and two control tasks (word listening and repetition). We measured changes in EEG activity elicited by tasks (the event-related spectral perturbation [ERSP]) in the theta, alpha, beta, and gamma frequency bands in two language (superior temporal and inferior frontal [ST and IF]) and one control (occipital [Occ]) region bilaterally...
May 1, 2024: Journal of Clinical Neurophysiology: Official Publication of the American Electroencephalographic Society
https://read.qxmd.com/read/38436391/serial-nerve-conduction-studies-in-guillain-barr%C3%A3-syndrome-its-usefulness-and-precise-timing
#12
JOURNAL ARTICLE
Hyung-Soo Lee, Bum Chun Suh, Jong Kuk Kim, Byung-Jo Kim, Tai-Seung Nam, Jeeyoung Oh, Jong Seok Bae, Kyong Jin Shin, Seung Woo Kim, Seung Min Kim, Ha Young Shin
PURPOSE: Nerve conduction study (NCS) is essential for subclassifying Guillain-Barré syndrome (GBS). It is well known that the GBS subclassification can change through serial NCSs. However, the usefulness of serial NCSs is debatable, especially in patients with early stage GBS. METHODS: Follow-up NCS data within 3 weeks (early followed NCS, EFN) and within 3 to 10 weeks (late-followed NCS, LFN) were collected from 60 patients with GBS who underwent their first NCS (FN) within 10 days after symptom onset...
March 1, 2024: Journal of Clinical Neurophysiology: Official Publication of the American Electroencephalographic Society
https://read.qxmd.com/read/38436390/estimate-of-patients-with-missed-seizures-because-of-delay-in-conventional-eeg
#13
JOURNAL ARTICLE
Safoora Fatima, Parimala Velpula Krishnamurthy, Mengzhen Sun, Mariel Kalkach Aparicio, Klevest Gjini, Aaron F Struck
PURPOSE: There is frequent delay between ordering and placement of conventional EEG. Here we estimate how many patients had seizures during this delay. METHODS: Two hundred fifty consecutive adult patients who underwent conventional EEG monitoring at the University of Wisconsin Hospital were retrospectively chart reviewed for demographics, time of EEG order, clinical and other EEG-related information. Patients were stratified by use of anti-seizure medications before EEG and into low-risk, medium-risk, and high-risk groups based on 2HELPS2B score (0, 1, or >1)...
March 1, 2024: Journal of Clinical Neurophysiology: Official Publication of the American Electroencephalographic Society
https://read.qxmd.com/read/38436389/nonconvulsive-status-epilepticus-clinical-findings-eeg-features-and-prognosis-in-a-developing-country-mexico
#14
JOURNAL ARTICLE
Daniel San-Juan, Erick B Ángeles, María Del Carmen F González-Aragón, Jacob Eli G Torres, Ángel L Lorenzana, Carlos Trenado, David J Anschel
PURPOSE: There is a lack of clinical and epidemiological knowledge about nonconvulsive status epilepticus (NCSE) in developing countries including Mexico, which has the highest prevalence of epilepsy in the Americas. Our aim was to describe the clinical findings, EEG features, and outcomes of NCSE in a tertiary center in Mexico. METHODS: We conducted a retrospective case series study (2010-2020) including patients (≥15 years old) with NCSE according to the modified Salzburg NCSE criteria 2015 with at least 6 months of follow-up...
March 1, 2024: Journal of Clinical Neurophysiology: Official Publication of the American Electroencephalographic Society
https://read.qxmd.com/read/38436388/seizure-detection-prediction-and-forecasting
#15
REVIEW
Aradia Fu, Fred A Lado
Among the many fears associated with seizures, patients with epilepsy are greatly frustrated and distressed over seizure's apparent unpredictable occurrence. However, increasing evidence have emerged over the years to support that seizure occurrence is not a random phenomenon as previously presumed; it has a cyclic rhythm that oscillates over multiple timescales. The pattern in rises and falls of seizure rate that varies over 24 hours, weeks, months, and years has become a target for the development of innovative devices that intend to detect, predict, and forecast seizures...
March 1, 2024: Journal of Clinical Neurophysiology: Official Publication of the American Electroencephalographic Society
https://read.qxmd.com/read/38436387/long-term-home-eeg-recording-wearable-and-implantable-devices
#16
REVIEW
Mahnoor Rehman, Lindsay M Higdon, Michael R Sperling
Electroencephalography (EEG) monitoring has served as a cornerstone in the diagnostic and therapeutic evaluation of epilepsy since its development. This has been accomplished with short-term inpatient video-EEG hospitalization enabling observation of both the semiological and the electrographic features of seizures or with short-term home ambulatory EEG or video-EEG. The advantages of inpatient video-EEG monitoring are limited by high cost, inconvenience, and inability to monitor patients for long periods (weeks or months) as might be done in the outpatient setting...
March 1, 2024: Journal of Clinical Neurophysiology: Official Publication of the American Electroencephalographic Society
https://read.qxmd.com/read/38436386/the-3rd-wave-of-eeg-technology-exploring-the-promise-of-ultralong-eeg-recordings
#17
JOURNAL ARTICLE
Fred A Lado, Ruben Kuzniecky
No abstract text is available yet for this article.
March 1, 2024: Journal of Clinical Neurophysiology: Official Publication of the American Electroencephalographic Society
https://read.qxmd.com/read/38376953/stimulation-induced-seizures-in-children-undergoing-stereo-eeg-evaluation
#18
JOURNAL ARTICLE
Ranjith Kumar Manokaran, Ayako Ochi, Shelly Weiss, Ivanna Yau, Rohit Sharma, Hiroshi Otsubo, George M Ibrahim, Elizabeth J Donner, Puneet Jain
PURPOSE: This study reports our center's initial experience with the use of low-frequency stimulation in provoking stimulation-induced seizures (SIS) in children with drug-resistant epilepsy undergoing stereo-EEG evaluations. METHODS: This retrospective study enrolled children aged 2 to 18 years with drug-resistant focal epilepsy who underwent stereo-EEG evaluation and extraoperative direct electrical cortical stimulation to elicit seizures. The low-frequency stimulation parameters consisted of biphasic square waveforms at frequency of 1 Hz, pulse width 1 millisecond, current 1 to 3 mA, and train duration of 20 seconds...
February 20, 2024: Journal of Clinical Neurophysiology: Official Publication of the American Electroencephalographic Society
https://read.qxmd.com/read/38376951/what-do-you-see-signature-pedagogy-in-continuous-electroencephalography-teaching
#19
JOURNAL ARTICLE
Andres Fernandez, Maryam Asoodar, Vivianne van Kranen-Mastenbroek, Marian Majoie, Dorene Balmer
PURPOSE: Electroencephalography (EEG) is commonly used in neurology, but there is variability in how neurologists interpret EEGs, potentially from variability in EEG teaching. Little is known about how EEG teaching is done to prepare neurologists for professional practice. METHODS: We interviewed a group of EEG experts to characterize their teaching practices around continuous EEG (cEEG). We used signature pedagogy as a framework to analyze and interpret the data...
February 20, 2024: Journal of Clinical Neurophysiology: Official Publication of the American Electroencephalographic Society
https://read.qxmd.com/read/38376940/technical-aspects-of-eliciting-trigeminocervical-and-trigeminospinal-reflexes-in-humans-a-scoping-review
#20
JOURNAL ARTICLE
Denise Lima Medeiros de Melo, Enio Alberto Comerlato, Denise Spinola Pinheiro, Gilberto Mastrocola Manzano
This scoping review aims to summarize the technical strategies for obtaining trigeminocervical reflex (TCR) and trigeminospinal reflex (TSR) responses. Studies published on TCR or TSR elicitation in humans through electrical stimulation of trigeminal nerve branches were eligible for this scoping review. The data of interest included stimulation parameters, site of stimulation, recording parameters, and the feasibility of TCR and TSR elicitation, in healthy participants. Short-latency TCR responses were regularly obtained in both anterior and posterior neck muscles after electrical stimulation of the supraorbital and infraorbital nerves under voluntary muscle activation...
February 20, 2024: Journal of Clinical Neurophysiology: Official Publication of the American Electroencephalographic Society
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