Journal of Clinical Neurophysiology最新文献_第10页

Quantitative Electroencephalographic Changes Associated With Brain Tissue Hypoxia After Pediatric Traumatic Brain Injury: A Retrospective Exploratory Analysis. 与小儿创伤性脑损伤后脑组织缺氧有关的定量脑电图变化：回顾性探索分析

IF 2.3 4区医学

Journal of Clinical Neurophysiology Pub Date : 2024-03-01 Epub Date: 2023-05-16 DOI: 10.1097/WNP.0000000000001015

Brian L Appavu, M Hamed Temkit, Damla Hanalioglu, Brian T Burrows, P David Adelson

{"title":"Quantitative Electroencephalographic Changes Associated With Brain Tissue Hypoxia After Pediatric Traumatic Brain Injury: A Retrospective Exploratory Analysis.","authors":"Brian L Appavu, M Hamed Temkit, Damla Hanalioglu, Brian T Burrows, P David Adelson","doi":"10.1097/WNP.0000000000001015","DOIUrl":"10.1097/WNP.0000000000001015","url":null,"abstract":"Purpose: Brain tissue hypoxia is associated with poor outcomes after pediatric traumatic brain injury. Although invasive brain oxygenation (PbtO 2 ) monitoring is available, noninvasive methods assessing correlates to brain tissue hypoxia are needed. We investigated EEG characteristics associated with brain tissue hypoxia.Methods: We performed a retrospective analysis of 19 pediatric traumatic brain injury patients undergoing multimodality neuromonitoring that included PbtO 2 and quantitative electroencephalography(QEEG). Quantitative electroencephalography characteristics were analyzed over electrodes adjacent to PbtO 2 monitoring and over the entire scalp, and included power in alpha and beta frequencies and the alpha-delta power ratio. To investigate relationships of PbtO 2 to quantitative electroencephalography features using time series data, we fit linear mixed effects models with a random intercept for each subject and one fixed effect, and an auto-regressive order of 1 to model between-subject variation and correlation for within-subject observations. Least squares (LS) means were used to investigate for fixed effects of quantitative electroencephalography features to changes in PbtO 2 across thresholds of 10, 15, 20, and 25 mm Hg.Results: Within the region of PbtO 2 monitoring, changes in PbtO 2 < 10 mm Hg were associated with reductions of alpha-delta power ratio (LS mean difference -0.01, 95% confidence interval (CI) [-0.02, -0.00], p = 0.0362). Changes in PbtO 2 < 25 mm Hg were associated with increases in alpha power (LS mean difference 0.04, 95% CI [0.01, 0.07], p = 0.0222).Conclusions: Alpha-delta power ratio changes are observed across a PbtO 2 threshold of 10 mm Hg within regions of PbtO 2 monitoring, which may reflect an EEG signature of brain tissue hypoxia after pediatric traumatic brain injury.","PeriodicalId":15516,"journal":{"name":"Journal of Clinical Neurophysiology","volume":" ","pages":"214-220"},"PeriodicalIF":2.3,"publicationDate":"2024-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"9469721","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

The 3rd Wave of EEG Technology: Exploring the Promise of Ultralong EEG Recordings. 脑电图技术的第三次浪潮：探索超长脑电图记录的前景。

IF 2.3 4区医学

Journal of Clinical Neurophysiology Pub Date : 2024-03-01 DOI: 10.1097/WNP.0000000000001073

Fred A Lado, Ruben Kuzniecky

引用次数: 0

Insights From Chronic ECoG by RNS. RNS 从慢性心电图中获得的启示。

IF 2.3 4区医学

Journal of Clinical Neurophysiology Pub Date : 2024-03-01 Epub Date: 2023-03-30 DOI: 10.1097/WNP.0000000000001010

Christopher B Traner, David King-Stephens

{"title":"Insights From Chronic ECoG by RNS.","authors":"Christopher B Traner, David King-Stephens","doi":"10.1097/WNP.0000000000001010","DOIUrl":"10.1097/WNP.0000000000001010","url":null,"abstract":"Summary: The NeuroPace responsive neurostimulation system (RNS) has revolutionized the care of patients suffering from focal epilepsy since its approval in 2014. One major advantage of this device is its innate ability to gather long-term electrocorticographic (ECoG) data that the device uses in its novel closed-loop treatment paradigm. Beyond the standard stimulation treatments, which have been demonstrated to be safe and well-tolerated, the data collected by the RNS provide valuable information, such as the long-term circadian and ultradian variations that affect seizure risk, obtained under naturalistic conditions. Additionally, these data inform future surgical procedures, supplementing clinically reported seizures by patients, assessing the response to newly added anti-seizure medications, helping to forecast the risk of future seizures, and understanding the mechanisms of certain long-term outcomes in patients with postsurgical epilepsy. By leveraging these data, the delivery of high-quality clinical care for patients with epilepsy can only be enhanced. Finally, these data open significant avenues of research, including machine learning and artificial intelligence algorithms, which may also translate to improved outcomes in patients who struggle with recurrent seizures.","PeriodicalId":15516,"journal":{"name":"Journal of Clinical Neurophysiology","volume":" ","pages":"195-199"},"PeriodicalIF":2.3,"publicationDate":"2024-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"9573639","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Sympathetic Skin Response in Ulnar Neuropathy at the Elbow. 肘部尺神经病变中的皮肤交感神经反应

IF 2.3 4区医学

Journal of Clinical Neurophysiology Pub Date : 2024-03-01 Epub Date: 2022-11-02 DOI: 10.1097/WNP.0000000000000963

Mauro Mondelli, Alessandro Aretini

{"title":"Sympathetic Skin Response in Ulnar Neuropathy at the Elbow.","authors":"Mauro Mondelli, Alessandro Aretini","doi":"10.1097/WNP.0000000000000963","DOIUrl":"10.1097/WNP.0000000000000963","url":null,"abstract":"Introduction: The sympathetic skin response (SSR) reflects the function of sudomotor sympathetic unmyelinated fibers. This study evaluates SSR abnormalities in ulnar neuropathy at the elbow (UNE).Methods: Sympathetic skin response was obtained after electrical stimulation of the glabella recording simultaneously from the hand palm (P), third digit (M3) and fifth digit ipsilateral (U5) and contralateral (cU5) to the side of UNE. Ten consecutive SSRs were recorded from each recording side of all participants.Results: The authors enrolled 31 patients (mean age 54.3 ± 11.4 years) and 25 subjects of a control group (mean age 52.6 ± 11.3 years). The mean of the areas and the area of the largest response of U5-SSR were significantly lower in the patients (106.9 ± 68.9 and 127.8 ± 79.7 μV/s, respectively) than in control group (161.8 ± 116.6 and 197.2 ± 143.3 μV/s, respectively) and in the affected than in the unaffected sides of the patients (155.3 ± 84.8 and 197.7 ± 103.3 μV/s, respectively); there were no differences in U5-SSR latencies and P-SSR and M3-SSR parameters. U5-SSR mean areas and U5-SSR largest area were reduced in 29% and 26% of patients, respectively. The differences between patients and control group and the number of patients with U5-SSR abnormalities increased when the ratios of M3/U5-SSR and U5/cU5-SSR areas were considered. U5-SSR area was related to UNE clinical severity and to some parameters of the ulnar nerve conduction velocity and cutaneous silent period.Conclusions: Sympathetic skin response is useful to demonstrate abnormalities of sympathetic fibers even if UNE patients do not complain for sympathetic symptoms. The SSR abnormalities were evident only if electrophysiological damage of myelinated fibers was moderate or severe.","PeriodicalId":15516,"journal":{"name":"Journal of Clinical Neurophysiology","volume":" ","pages":"271-277"},"PeriodicalIF":2.3,"publicationDate":"2024-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"10642183","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Long-Term Home EEG Recording: Wearable and Implantable Devices. 长期家庭脑电图记录：穿戴式和植入式设备。

IF 2.3 4区医学

Journal of Clinical Neurophysiology Pub Date : 2024-03-01 Epub Date: 2023-04-17 DOI: 10.1097/WNP.0000000000001014

Mahnoor Rehman, Lindsay M Higdon, Michael R Sperling

{"title":"Long-Term Home EEG Recording: Wearable and Implantable Devices.","authors":"Mahnoor Rehman, Lindsay M Higdon, Michael R Sperling","doi":"10.1097/WNP.0000000000001014","DOIUrl":"10.1097/WNP.0000000000001014","url":null,"abstract":"Summary: 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. This limitation has impelled the development of wearable EEG devices, which aim to capture high-quality long-term EEG data in a user-friendly and unobtrusive manner. This review article aims to summarize three broad categories of wearable EEG devices, including scalp, subcutaneous, and intracranial EEG. In this review, we will discuss the features of each type of device and the implications for the management of epilepsy. This review does not aim to describe every wearable EEG device on the market but instead seeks to provide a broad overview of the various categories of device that are available, giving examples of each and those in development (with no intention to recommend or advocate for any particular product).","PeriodicalId":15516,"journal":{"name":"Journal of Clinical Neurophysiology","volume":"41 3","pages":"200-206"},"PeriodicalIF":2.3,"publicationDate":"2024-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140021918","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

A Stable EEG Epilepsy Network Spans From Infraslow to Ripple and From Interictal to Ictus. 一个稳定的脑电图癫痫网络跨越了 "下流 "到 "波纹 "和 "发作间期 "到 "间歇期"。

IF 2.3 4区医学

Journal of Clinical Neurophysiology Pub Date : 2024-03-01 Epub Date: 2022-10-03 DOI: 10.1097/WNP.0000000000000971

Sushma Ghimire, Mukesh Dhamala, Charles M Epstein

{"title":"A Stable EEG Epilepsy Network Spans From Infraslow to Ripple and From Interictal to Ictus.","authors":"Sushma Ghimire, Mukesh Dhamala, Charles M Epstein","doi":"10.1097/WNP.0000000000000971","DOIUrl":"10.1097/WNP.0000000000000971","url":null,"abstract":"Purpose: To characterize the epilepsy network as reflected in intracranial electroencephalography (iEEG) across the full spectrum of iEEG frequencies and different phases of epilepsy, using a single, conceptually straightforward mathematical measure.Methods: The authors applied the spectral Granger causality techniques to intracranial electroencephalography recordings and computed contact-by-contact inward, outward, and total causal flow across frequencies and seizure phases in a selected group of three patients with well-defined, nonlesional seizure foci and prolonged responses to invasive procedures. One seizure and one interictal sample were analyzed per subject.Results: A prominent intracranial electroencephalography network was identified by Granger causality at both high and low frequencies. This network persists during the preictal and interictal phases of epilepsy and closely matches the visible seizure onset. The causal inflow network corresponded to seizure onset electrode contacts in 8 of 12 conditions, including ripple, infraslow, preictal, and interictal phases of epilepsy. Its most striking feature is the consistent dominance of causal inflow rather than outflow in the vicinity of the seizure onset zone.Conclusions: Findings of this study indicate that a stable intracranial electroencephalography epilepsy network persists, and it can be characterized by a single Granger causality measure from infraslow to ripple frequencies and from the interictal to the immediate preictal phases of epilepsy.","PeriodicalId":15516,"journal":{"name":"Journal of Clinical Neurophysiology","volume":" ","pages":"251-256"},"PeriodicalIF":2.3,"publicationDate":"2024-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"10633747","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Serial Nerve Conduction Studies in Guillain-Barré Syndrome: Its Usefulness and Precise Timing. 吉兰-巴雷综合征的序列神经传导研究：其实用性和精确时间。

IF 2.3 4区医学

Journal of Clinical Neurophysiology Pub Date : 2024-03-01 Epub Date: 2022-12-02 DOI: 10.1097/WNP.0000000000000985

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

{"title":"Serial Nerve Conduction Studies in Guillain-Barré Syndrome: Its Usefulness and Precise Timing.","authors":"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","doi":"10.1097/WNP.0000000000000985","DOIUrl":"10.1097/WNP.0000000000000985","url":null,"abstract":"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. Each NCS was classified into five subtypes (normal, demyelinating, axonal, inexcitable, and equivocal), according to Hadden's and Rajabally's criteria. We analyzed the frequency of significant changes in classification (SCCs) comprising electrodiagnostic aggravation and subtype shifts between demyelinating and axonal types according to follow-up timing.Results: Between FN and EFN, 33.3% of patients with Hadden's criteria and 18.3% with Rajabally's criteria showed SCCs. Between FN and LFN, 23.3% of patients with Hadden's criteria and 21.7% with Rajabally's criteria showed SCCs, of which 71.4% (Hadden's criteria) and 46.2% (Rajabally's criteria) already showed SCCs from the EFN. The conditions of delayed SCCs between EFN and LFN were very early FN, mild symptoms at the FN, or persistent electrophysiological deterioration 3 weeks after symptom onset.Conclusions: A substantial proportion of patients with GBS showed significant changes in neurophysiological classification at the early stage. Serial NCS may be helpful for precise neurophysiological classification. This study suggests that follow-up NCSs should be performed within 3 weeks of symptom onset in patients with GBS in whom FN was performed within 10 days of symptom onset.","PeriodicalId":15516,"journal":{"name":"Journal of Clinical Neurophysiology","volume":"41 3","pages":"278-284"},"PeriodicalIF":2.3,"publicationDate":"2024-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140021920","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

EEG Pattern With Spectral Analysis Can Prognosticate Good and Poor Neurologic Outcomes After Cardiac Arrest. 带频谱分析的脑电图模式可预判心脏骤停后的神经系统预后好坏。

IF 2.3 4区医学

Journal of Clinical Neurophysiology Pub Date : 2024-03-01 Epub Date: 2022-08-08 DOI: 10.1097/WNP.0000000000000958

Kurt Y Qing, Peter B Forgacs, Nicholas D Schiff

{"title":"EEG Pattern With Spectral Analysis Can Prognosticate Good and Poor Neurologic Outcomes After Cardiac Arrest.","authors":"Kurt Y Qing, Peter B Forgacs, Nicholas D Schiff","doi":"10.1097/WNP.0000000000000958","DOIUrl":"10.1097/WNP.0000000000000958","url":null,"abstract":"Purpose: To investigate the prognostic value of a simple stratification system of electroencephalographical (EEG) patterns and spectral types for patients after cardiac arrest.Methods: In this prospectively enrolled cohort, using manually selected EEG segments, patients after cardiac arrest were stratified into five independent EEG patterns (based on background continuity and burden of highly epileptiform discharges) and four independent power spectral types (based on the presence of frequency components). The primary outcome is cerebral performance category (CPC) at discharge. Results from multimodal prognostication testing were included for comparison.Results: Of a total of 72 patients, 6 had CPC 1-2 by discharge, all of whom had mostly continuous EEG background without highly epileptiform activity at day 3. However, for the same EEG background pattern at day 3, 19 patients were discharged at CPC 3 and 15 patients at CPC 4-5. After adding spectral analysis, overall sensitivity for predicting good outcomes (CPC 1-2) was 83.3% (95% confidence interval 35.9% to 99.6%) and specificity was 97.0% (89.5% to 99.6%). In this cohort, standard prognostication testing all yielded 100% specificity but low sensitivity, with imaging being the most sensitive at 54.1% (36.9% to 70.5%).Conclusions: Adding spectral analysis to qualitative EEG analysis may further improve the diagnostic accuracy of EEG and may aid developing novel measures linked to good outcomes in postcardiac arrest coma.","PeriodicalId":15516,"journal":{"name":"Journal of Clinical Neurophysiology","volume":" ","pages":"236-244"},"PeriodicalIF":2.3,"publicationDate":"2024-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9905375/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"10669012","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Seizure Detection, Prediction, and Forecasting. 癫痫发作检测、预测和预报。

IF 2.3 4区医学

Journal of Clinical Neurophysiology Pub Date : 2024-03-01 DOI: 10.1097/WNP.0000000000001045

Aradia Fu, Fred A Lado

引用次数: 0

Stimulation-Induced Seizures in Children Undergoing Stereo-EEG Evaluation. 接受立体电子脑电图评估的儿童中由刺激诱发的癫痫发作。

IF 2.4 4区医学

Journal of Clinical Neurophysiology Pub Date : 2024-02-20 DOI: 10.1097/WNP.0000000000001077

Ranjith Kumar Manokaran, Ayako Ochi, Shelly Weiss, Ivanna Yau, Rohit Sharma, Hiroshi Otsubo, George M Ibrahim, Elizabeth J Donner, Puneet Jain

{"title":"Stimulation-Induced Seizures in Children Undergoing Stereo-EEG Evaluation.","authors":"Ranjith Kumar Manokaran, Ayako Ochi, Shelly Weiss, Ivanna Yau, Rohit Sharma, Hiroshi Otsubo, George M Ibrahim, Elizabeth J Donner, Puneet Jain","doi":"10.1097/WNP.0000000000001077","DOIUrl":"https://doi.org/10.1097/WNP.0000000000001077","url":null,"abstract":"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. Various epilepsy-related, imaging, neurophysiology, and surgery-related variables were collected and summarized.Results: Fourteen children (mean age 13 years; 57.1% girls) were included, 10 of whom had unilateral stereo-EEG coverage. Cortical stimulation for provoking seizures was performed after a median of 5 days after electrode implantation. The median number of electrode-contacts stimulated per patient was 42. Four patients (28.6%) experienced habitual SIS (all extratemporal). The etiology in three patients was focal cortical dysplasia. Interictal high-frequency oscillations at electrode-contacts provoking SIS were observed in three cases (75%). Two of these individuals (50%) had class 1 International League Against Epilepsy seizure outcome at last follow-up, after the resection of the brain regions generating SIS.Conclusions: Low-frequency (1-Hz) stimulation could provoke habitual SIS in nearly one-fourth of children with focal epilepsy undergoing stereo-EEG monitoring. This study provides a limited pediatric experience with the low-frequency cortical stimulation and SIS.","PeriodicalId":15516,"journal":{"name":"Journal of Clinical Neurophysiology","volume":" ","pages":""},"PeriodicalIF":2.4,"publicationDate":"2024-02-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139912745","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0