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Electrodiagnostic

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https://www.readbyqxmd.com/read/28646510/compound-muscle-action-potential-duration-in-critical-illness-neuromyopathy
#1
Christopher L Kramer, Andrea J Boon, C Michel Harper, Brent P Goodman
BACKGROUND: We sought to determine the specificity of compound muscle action potential (CMAP) durations and amplitudes in a large critical illness neuromyopathy (CINM) cohort relative to controls with other neuromuscular conditions. METHODS: Fifty-eight patients with CINM seen over a 17-year period were retrospectively studied. Electrodiagnostic findings of the CINM cohort were compared with patients with axonal peripheral neuropathy and myopathy due to other causes...
June 23, 2017: Muscle & Nerve
https://www.readbyqxmd.com/read/28631957/prognostic-value-of-clinical-and-electrodiagnostic-parameters-at-time-of-diagnosis-in-patients-with-amyotrophic-lateral-sclerosis
#2
Wendeline Reniers, Maarten Schrooten, Kristl G Claeys, Petra Tilkin, Ann D'Hondt, Dimphna Van Reijen, Goedele Couwelier, Nikita Lamaire, Wim Robberecht, Steffen Fieuws, Philip Van Damme
OBJECTIVE: To assess the added prognostic value of the aggregated clinical and electrodiagnostic data, which define a given diagnostic category according to the Awaji or revised El Escorial criteria at time of diagnosis in patients with amyotrophic lateral sclerosis (ALS). METHODS: Clinical signs and electrodiagnostic test results were collected at time of diagnosis in 396 patients with ALS between January 2009 and January 2016. Significant predictors of prognosis were identified using a univariate model, and later combined in a multivariate Cox regression model...
February 15, 2017: Amyotrophic Lateral Sclerosis and Frontotemporal Degeneration
https://www.readbyqxmd.com/read/28602631/clinical-electrodiagnostic-and-outcome-correlation-in-als-patients-in-thailand
#3
Kongkiat Kulkantrakorn, Dararat Suksasunee
INTRODUCTION: The diagnosis of amyotrophic lateral sclerosis (ALS) requires both clinical and electrodiagnostic (EDx) data. The correlation between the two may aid in outcome prognostication. METHODS: Retrospective review of patients with ALS in tow tertiary hospitals in Thailand. RESULTS: Data from 25 ALS patients out of 38 patients with motor neuron disease was reviewed. Male was predominant with mean age of onset of 60.1±10.7years old...
June 8, 2017: Journal of Clinical Neuroscience: Official Journal of the Neurosurgical Society of Australasia
https://www.readbyqxmd.com/read/28594495/ulnar-tunnel-syndrome-radial-tunnel-syndrome-anterior-interosseous-nerve-syndrome-and-pronator-syndrome
#4
Adam B Strohl, David S Zelouf
In addition to the more common carpal tunnel and cubital tunnel syndromes, orthopaedic surgeons must recognize and manage other potential sites of peripheral nerve compression. The distal ulnar nerve may become compressed as it travels through the wrist, which is known as ulnar tunnel or Guyon canal syndrome. The posterior interosseous nerve may become entrapped in the proximal forearm as it travels through the radial tunnel, which results in a pain syndrome without motor weakness. The median nerve may become entrapped in the proximal forearm, which can result in a variety of symptoms...
February 15, 2017: Instructional Course Lectures
https://www.readbyqxmd.com/read/28594494/carpal-tunnel-syndrome-initial-management-and-the-treatment-of-recalcitrant-patients
#5
Karan Dua, A Lee Osterman, Joshua M Abzug
Carpal tunnel syndrome (CTS) is a focal compressive neuropathy of the median nerve at the level of the wrist. CTS is the most common type of compressive neuropathy that occurs in the upper extremity. Typically, patients with CTS have paresthesia, pain, and numbness in the radial three and one-half digits. Nighttime symptoms are more common earlier in the disease process, with daytime symptoms becoming more frequent as CTS progresses. Electrodiagnostic studies may be performed to confirm a diagnosis of CTS or to obtain a baseline before surgical treatment; however, electrodiagnostic studies may be normal in a subset of patients who have CTS...
February 15, 2017: Instructional Course Lectures
https://www.readbyqxmd.com/read/28594492/thoracic-outlet-syndrome-getting-it-right-so-you-don-t-have-to-do-it-again
#6
Alan J Micev, Joshua M Abzug, A Lee Osterman
Thoracic outlet syndrome is a disorder caused by thoracic outlet compression of the brachial plexus and/or the subclavian vessels. The characteristics of thoracic outlet syndrome are highly variable. Objective tests, such as electrodiagnostic studies, are often unreliable in characterizing thoracic outlet syndrome. The existence of thoracic outlet syndrome as a discrete entity is controversial. Surgeons who accept the existence of thoracic outlet syndrome acknowledge that diagnosis is clinical. The variability and complexity of thoracic outlet syndrome lends itself to mistakes in both diagnosis and surgical treatment...
February 15, 2017: Instructional Course Lectures
https://www.readbyqxmd.com/read/28590289/comparison-of-inching-electrodiagnosis-method-and-ultrasonographic-findings-in-the-determination-of-median-nerve-entrapment-site-in-carpal-tunnel-syndrome
#7
Asma Azadeh, Attiyeh Vasaghi, Reza Jalli, Mohammadreza Emad
OBJECTIVE: The purpose of the study was to evaluate the diagnostic value of both inching method through the electrodiagnostic test and ultrasonographic assay in localizing the site of entrapment in patients with symptoms and signs of carpal tunnel syndrome. DESIGN: Thirty-two hands with confirmed carpal tunnel syndrome through electrodiagnostic test and 30 hands as control group were enrolled. For both groups, sensory and motor latencies by inching technique and cross-sectional area by ultrasonography were measured at the inching points...
June 6, 2017: American Journal of Physical Medicine & Rehabilitation
https://www.readbyqxmd.com/read/28580494/efficacy-of-low-level-laser-therapy-in-carpal-tunnel-syndrome-management-a-systematic-review-and-meta-analysis
#8
Amira Hassan Bekhet, Basma Ragab, Abdelrahman Ibrahim Abushouk, Ahmed Elgebaly, Olfat Ibrahim Ali
We performed this meta-analysis to investigate the efficacy of low-level laser therapy (LLLT), a physiotherapy modality with anti-inflammatory and analgesic effects, in the management of mild-to-moderate carpal tunnel syndrome (CTS). We searched PubMed, Web of Knowledge, Scopus, Cochrane Central, and Virtual Health Library for randomized controlled trials (RCTs) that compared the effects of LLLT with or without splinting versus placebo on functional and electromyographic outcomes in CTS. All outcomes were pooled as mean differences (MD) under the inverse variance or random effects model, using the statistical add-in (MetaXL, version 5...
June 5, 2017: Lasers in Medical Science
https://www.readbyqxmd.com/read/28566141/bibrachial-plegia-due-to-lyme-radiculopoliomyelitis-myelitis
#9
Feras Akbik, Marcelo Matiello, Amanda Piquet, Tracey Cho, Adam Cohen, Nagagopal Venna
Nervous system involvement occurs in up to 15% of patients with Lyme disease, most commonly manifested as cranial neuropathy, lymphocytic meningitis, and or radiculoneuritis. We describe a patient with subacute radiculopoliomyelitis-myelitis matching the selective involvement of the anterior horns and roots of the cervical spinal cord seen on MRI and on electrodiagnostic studies. We demonstrate positive CSF Lyme antibodies and document a near-complete recovery with antibiotics. This case highlights the importance of recognizing an atypical presentation of Lyme disease in the setting of initial radiculitis and or myelitis, particularly given the potential for favorable outcomes with appropriate treatment...
July 15, 2017: Journal of the Neurological Sciences
https://www.readbyqxmd.com/read/28560607/femoral-nerve-and-lumbar-plexus-injury-after-minimally-invasive-lateral-retroperitoneal-transpsoas-approach-electrodiagnostic-prognostic-indicators-and-a-roadmap-to-recovery
#10
Naomi A Abel, Jacob Januszewski, Andrew C Vivas, Juan S Uribe
Injury to the lumbosacral (LS) plexus is a well-described complication after lateral retroperitoneal transpsoas approaches to the spine. The prognosis for functional recovery after lumbosacral plexopathy or femoral/obturator neuropathy is unclear. We designed a retrospective case-control study with patients undergoing one-level lateral retroperitoneal transpsoas lumbar interbody fusion (LLIF) between January 2011 and June 2016 to correlate electrodiagnostic assessments (EDX) to physiologic concepts of nerve injury and reinnervation, and attempt to build a timeline for patient evaluation and recovery...
May 30, 2017: Neurosurgical Review
https://www.readbyqxmd.com/read/28556429/acute-nutritional-axonal-neuropathy
#11
Johanna Hamel, Eric L Logigian
INTRODUCTION: This study describes clinical, laboratory, and electrodiagnostic features of a severe acute axonal polyneuropathy common to patients with acute nutritional deficiency in the setting of alcoholism, bariatric surgery (BS), or anorexia. METHODS: Retrospective analysis of clinical, electrodiagnostic, and laboratory data of patients with acute axonal neuropathy. RESULTS: Thirteen patients were identified with a severe, painful, sensory or sensorimotor axonal polyneuropathy that developed over 2-12 weeks with sensory ataxia, areflexia, variable muscle weakness, poor nutritional status, and weight loss, often with prolonged vomiting and normal cerebrospinal fluid protein...
May 26, 2017: Muscle & Nerve
https://www.readbyqxmd.com/read/28545159/the-value-transformation-of-health-care-impact-on-neuromuscular-and-electrodiagnostic-medicine
#12
Pushpa Narayanaswami, Millie Suk, Lyell K Jones
INTRODUCTION: Beginning in 2017, most physicians who participate in Medicare are subject to the Medicare Access and CHIP Reauthorization Act (MACRA), the milestone legislation that signals the US health care system's transition from volume-based to value-based care. METHODS: Review of emerging trends in development of value-based healthcare systems in the US. RESULTS: MACRA and the resulting Quality Payment Program (QPP) create two participation pathways, the Merit-based Incentive Payment System (MIPS) and the Advanced Alternative Payment Model (AAPM) pathway...
May 25, 2017: Muscle & Nerve
https://www.readbyqxmd.com/read/28543877/it-s-time-to-move-on-from-the-bell-curve
#13
Lawrence R Robinson
The bell curve was first described in the 18th century by de Moivre and Gauss to depict the distribution of binomial events, such as coin tossing, or repeated measures of physical objects. In the 19th and 20th centuries, the bell curve was appropriated, or perhaps misappropriated, to apply to biologic and social measures across people. For many years we used it to derive reference values for our electrophysiologic studies. There is, however, no reason to believe that electrophysiologic measures should approximate a bell-curve distribution, and empiric evidence suggests they do not...
May 23, 2017: Muscle & Nerve
https://www.readbyqxmd.com/read/28521265/optimizing-the-electrodiagnostic-accuracy-in-guillain-barr%C3%A3-syndrome-subtypes-criteria-sets-and-sparse-linear-discriminant-analysis
#14
Antonino Uncini, Luigi Ippoliti, Nortina Shahrizaila, Yukari Sekiguchi, Satoshi Kuwabara
OBJECTIVE: To optimize the electrodiagnosis of Guillain-Barré syndrome (GBS) subtypes at first study. METHODS: The reference electrodiagnosis was obtained in 53 demyelinating and 45 axonal GBS patients on the basis of two serial studies and results of anti-ganglioside antibodies assay. We retrospectively employed sparse linear discriminant analysis (LDA), two existing electrodiagnostic criteria sets (Hadden et al., 1998; Rajabally et al., 2015) and one we propose that additionally evaluates duration of motor responses, sural sparing pattern and defines reversible conduction failure (RCF) in motor and sensory nerves at second study...
July 2017: Clinical Neurophysiology: Official Journal of the International Federation of Clinical Neurophysiology
https://www.readbyqxmd.com/read/28514704/guillain-barr%C3%A3-syndrome-variants-forms-fruste-reclassification-with-new-criteria
#15
Fu Liong Hiew, Rahmansah Ramlan, Shanthi Viswanathan, Santhi Puvanarajah
OBJECTIVES: This study aimed to evaluate the clinical and electrophysiological characteristics of various distinctive classical and localised Guillain-Barré syndrome (GBS) subtypes. PATIENTS AND METHODS: Clinical characteristics and electrophysiological data of sixty-one consecutive patients admitted between 2012 and 2015 were systematically analysed and reclassified according to the new GBS clinical classification. Neurophysiology was evaluated with Hadden et al...
July 2017: Clinical Neurology and Neurosurgery
https://www.readbyqxmd.com/read/28511974/risk-factor-analysis-for-meralgia-paresthetica-a-hospital-based-study-in-taiwan
#16
Wei-Chieh Weng, Yi-Chia Wei, Wen-Yi Huang, Yu-Yi Chien, Tsung-I Peng, Chia-Lun Wu
Recognizing the cause is essential for the management of meralgia paresthetica (MP), also known as lateral femoral cutaneous neuropathy. The aim of this study was to investigate the etiologies of MP and their influence on each other. This retrospective study enrolled referral patients with electromyographic studies who fulfilled the clinical and electrodiagnostic criteria of MP from January 2003 to December 2013. Data including age, gender, body weight, body height, occupation, and relevant medical history were collected...
May 13, 2017: Journal of Clinical Neuroscience: Official Journal of the Neurosurgical Society of Australasia
https://www.readbyqxmd.com/read/28496986/a-case-of-stiff-dog-syndrome-associated-with-anti-glutamic-acid-decarboxylase-antibodies
#17
Theresa E Pancotto, John H Rossmeisl
BACKGROUND: The stiff person syndrome (SPS) is a rare and debilitating autoimmune disorder with an unknown pathogenesis and variable clinical presentation that can present a diagnostic challenge. Although entities that clinically mimic stiff-person spectrum disorders (SPSD) have manifested in horses, they have not been reported in dogs. CASE PRESENTATION: We describe a 2-year-old beagle dog presented for progressive attacks of muscular rigidity and lordosis with superimposed spasms of the appendicular muscles triggered by tactile stimulation which resulted in marked gait impairment...
2017: Journal of Clinical Movement Disorders
https://www.readbyqxmd.com/read/28488619/peripheral-nerve-injuries-a-retrospective-survey-of-1124-cases
#18
João A Kouyoumdjian, Carla R Graça, Vanessa F M Ferreira
BACKGROUND: Peripheral nerve injuries (PNIs) remain an important health problem often leading to severe motor disabilities predominantly in the younger population. OBJECTIVE: To analyze our experience of clinical and electrodiagnostic evaluation (EDX) of PNIs over a 26-year period. MATERIALS AND METHODS: Between 1989 and 2014, 1124 consecutive patients with 1418 PNIs were referred for clinical as well as EDX evaluation. These PNIs involved upper and lower limbs as well as the facial nerves...
May 2017: Neurology India
https://www.readbyqxmd.com/read/28485505/posterior-interosseous-nerve-syndrome-after-pneumatic-hammer-use-an-uncommon-condition
#19
Bernardo Nunes, Francisco Serdoura, Luísa Vital, Manuel Seara, Rui Pinto
This case report presents a 27 year-old manual worker with right wrist extension deficit after pneumatic hammer handling. MRI and electromyographic studies revealed partial compromise of the posterior interosseous nerve (PIN) proximal to the branch for the extensor digitorum communis. The patient enrolled a 6-week rehabilitation period and recovered without remaing symptoms. PIN syndrome has mostly been associated with compressive neuropathies of the upper limb, but has seldom been reported in labor contexts...
July 2017: American Journal of Industrial Medicine
https://www.readbyqxmd.com/read/28483540/peripheral-nervous-system-involvement-in-systemic-lupus-erythematosus-prevalence-clinical-and-immunological-characteristics-treatment-and-outcome-of-a-large-cohort-from-a-single-centre
#20
REVIEW
Pilar Toledano, Ramón Orueta, Ignasi Rodríguez-Pintó, Josep Valls-Solé, Ricard Cervera, Gerard Espinosa
Disorders of peripheral nervous system in patients with systemic lupus erythematosus (PNS-SLE) are a major cause of morbidity. The aims of the present study were to determine the prevalence of PNS-SLE involvement in a large cohort of SLE patients from a single centre, to characterize such involvement, treatment modalities and outcome, and to identify the possible variables that may be associated with its presence. We performed an observational cross-sectional study that included all SLE patients being followed in our department between March and December 2015 who met at least one of the PNS-SLE case definitions proposed in 1999 by the American College of Rheumatology...
May 5, 2017: Autoimmunity Reviews
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