Electromyoneurographic (EMNG) study is very useful in diagnosis of myopathy. Motor unit action potentials are low-amplitude, polyphasic and short duration and can be present to variable degree in different type of myopathies. Four components of needle EMG provide important information; morphology of motor unit action potentials, spontaneus activity, insertional activity and recruitment. Myopathy associtaed with fibrillations ussualy have components of inflammation and necrosis. Although there are no EMG findings for a specific disorders or couse, the combined patterns of findings may be characteristic of certain types of myopathy.
Download full-text PDF |
Source |
|---|
Publication Analysis
Top Keywords
Similar Publications
Computerized adaptive testing for PRWHE measurements using domains of pain and motor function.
J Hand Surg Eur Vol
January 2025
University of Oxford, Wellington Square, Oxford OX1 2JD, UK.
The Patient-Rated Wrist and Hand Evaluation is an outcome measure for patients with conditions affecting the wrist or hand. We evaluated the structural validity of the Patient-Rated Wrist and Hand Evaluation using psychometric techniques, then developed computerized adaptive testing algorithms. Factor analysis found two health constructs consistent with 'Pain' and 'Motor Function'.
View Article and Find Full Text PDFCase Series of Right-Hemisphere Nonfluent Variant of Primary Progressive Aphasia.
J Clin Neurol
January 2025
Brain and Mind Centre, The University of Sydney, Camperdown, NSW, Australia.
Background And Purpose: Nonfluent variant primary progressive aphasia (nfvPPA) is a neurodegenerative disorder characterized by the progressive deterioration of language functions that typically appears with atrophy predominating in the left peri-insular region (left-nfvPPA) on imaging. While both left-dominant and right-dominant presentations have been reported in semantic variant primary progressive aphasia, the other language presentation of frontotemporal dementia, no case series of nfvPPA with predominantly right-sided atrophy of the peri-insular region (right-nfvPPA) have been reported previously. This study explored whether such entities exist and what their clinical features might be.
View Article and Find Full Text PDFSex-Related Differences in Motor Unit Firing Rate and Pennation Angle.
Appl Physiol Nutr Metab
January 2025
Western University, London, Ontario, Canada;
Motor unit firing rate (MUFR) and pennation angle were measured concurrently in males and females from submaximal to maximal intensities. Thirty participants, (16F and 14M) performed isometric dorsiflexion contractions at 20%, 40%, 60%, 80% and 100% of maximal voluntary contraction (MVC). During each contraction, measures of MUFR were obtained via surface electromyography decomposition, and muscle fiber pennation angle and fascicle length were obtained via ultrasound.
View Article and Find Full Text PDFNeurophysiological Insights into the Pathophysiology of Stiff-Person Spectrum Disorders.
Mov Disord Clin Pract
January 2025
Department of Clinical and Movement Neurosciences, UCL Queen Square Institute of Neurology, London, United Kingdom.
Background: Stiff Person Spectrum Disorders (SPSD) are classically defined by the presence of muscle stiffness, spasms and hyperactivity of the central nervous system. There is a notable correlation between neurophysiological features and the clinical hallmark of SPSD, which has greatly encouraged the use of these techniques for diagnostic purposes. Besides, electrophysiological techniques allow for a functional evaluation of the 'hyperactivity of the CNS', thus offering the opportunity to clarify the mechanisms underlying this disorder.
View Article and Find Full Text PDFElectrophysiological Studies in Combination With Interim-Positron Emission Tomography Scan for Prevention of Severe Brentuximab-Vedotin-Induced Neurotoxicity.
Eur J Haematol
January 2025
Hematology and Transplant Center, University Hospital "San Giovanni di Dio e Ruggi d'Aragona", Salerno, Italy.
Brentuximab-vedotin (BV)-induced neurotoxicity (BVIN), a frequent adverse event caused by this monoclonal antibody, is the primary reason for dose modification or drug discontinuation, and is characterized by sensory, motor, and/or autonomic peripheral nerve dysfunctions. Although reversible, BVIN can persist for months or years after treatment and negatively affect quality of life (QoL). Currently, BVIN is managed by dose adjustment or drug interruption, leading to an increased risk of disease relapse.
View Article and Find Full Text PDFWant AI Summaries of new PubMed Abstracts delivered to your In-box?
Enter search terms and have AI summaries delivered each week - change queries or unsubscribe any time!