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Nerve conduction studies

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https://www.readbyqxmd.com/read/29668037/treatment-of-chronic-neurogenic-cough-with-in-office-superior-laryngeal-nerve-block
#1
C Blake Simpson, Kathleen M Tibbetts, Michael J Loochtan, Laura M Dominguez
OBJECTIVES: Neurogenic cough is believed to result from a sensory neuropathy involving the internal branch of the superior laryngeal nerve (SLN). We present our outcomes for the treatment of neurogenic cough with localized blockade of the internal branch of the SLN. METHODS: A retrospective chart review of patients who underwent in-office percutaneous SLN block for treatment of neurogenic cough between 2015 and 2017 was conducted. Patient demographics, indications for injection, and response to treatment were recorded and analyzed...
April 18, 2018: Laryngoscope
https://www.readbyqxmd.com/read/29665554/inhibition-by-non-steroidal-anti-inflammatory-drugs-of-compound-action-potentials-in-frog-sciatic-nerve-fibers
#2
Rika Suzuki, Tsugumi Fujita, Kotaro Mizuta, Eiichi Kumamoto
AIMS: Although antinociception produced by non-steroidal anti-inflammatory drugs (NSAIDs) is partly attributed to nerve conduction inhibition, this has not been thoroughly examined yet. The aim of the present study was to reveal quantitatively how various types of NSAIDs affect compound action potentials (CAPs), a measure of nerve conduction. MAIN METHODS: CAPs were recorded from the frog sciatic nerve by using the air-gap method. KEY FINDINGS: Soaking the sciatic nerve with acetic acid-based NSAIDs (diclofenac and aceclofenac) reduced the peak amplitude of CAP in a concentration-dependent manner; their IC50 values were 0...
April 14, 2018: Biomedicine & Pharmacotherapy, Biomédecine & Pharmacothérapie
https://www.readbyqxmd.com/read/29663478/superb-microvascular-imaging-of-the-median-nerve-in-carpal-tunnel-syndrome-an-electrodiagnostic-and-ultrasonographic-study
#3
Ali Yavuz Karahan, Serdar Arslan, Banu Ordahan, Suleyman Bakdik, Timur Ekiz
OBJECTIVE: To evaluate intraneural blood flow of the median nerve using superb microvascular imaging (SMI) and power Doppler ultrasonography (PDUS), and to examine their correlation with electroneuromyography in patients with carpal tunnel syndrome (CTS). METHODS: A cross-sectional survey was used, and the study was conducted in the research unit of a training and research hospital. Patients diagnosed with CTS according to electroneuromyography studies were included in the study...
April 16, 2018: Journal of Ultrasound in Medicine: Official Journal of the American Institute of Ultrasound in Medicine
https://www.readbyqxmd.com/read/29662612/exploiting-mitochondrial-and-metabolic-homeostasis-as-a-vulnerability-in-nf1-deficient-cells
#4
Robert J Allaway, Matthew D Wood, Sondra L Downey, Stephanie J Bouley, Nicole A Traphagen, Jason D Wells, Jaya Batra, Sir Norman Melancon, Carol Ringelberg, William Seibel, Nancy Ratner, Yolanda Sanchez
Neurofibromatosis type 1 is a disease caused by mutation of neurofibromin 1 ( NF1 ), loss of which results in hyperactive Ras signaling and a concomitant increase in cell proliferation and survival. Patients with neurofibromatosis type 1 frequently develop tumors such as plexiform neurofibromas and malignant peripheral nerve sheath tumors. Mutation of NF1 or loss of the NF1 protein is also observed in glioblastoma, lung adenocarcinoma, and ovarian cancer among other sporadic cancers. A therapy that selectively targets NF1 deficient tumors would substantially advance our ability to treat these malignancies...
March 23, 2018: Oncotarget
https://www.readbyqxmd.com/read/29662112/optical-coherence-tomography-angiography-vessel-density-changes-after-acute-intraocular-pressure-elevation
#5
Qi Zhang, Jost B Jonas, Qian Wang, Szy Yann Chan, Liang Xu, Wen Bin Wei, Ya Xing Wang
To investigate changes in retinal vessel density in optic nerve head (ONH) and macula after acute intraocular pressure (IOP) elevation, we conducted a prospective observational study. Eyes with IOP rise ≥5 mmHg after 2-hour dark room prone provocative test (DRPPT) were included. Vasculature of ONH and macula was examined by optical coherence tomography angiography (OCTA) at baseline and after DRPPT. Among the 65 eyes of 42 individuals, 40 eyes with qualified images were enrolled. Mean IOP rise was 9.6 ± 4...
April 16, 2018: Scientific Reports
https://www.readbyqxmd.com/read/29661920/dhtkd1-deficiency-causes-charcot-marie-tooth-disease-in-mice
#6
Wang-Yang Xu, Houbao Zhu, Yan Shen, Ying-Han Wan, Xiao-Die Tu, Wen-Ting Wu, Lingyun Tang, Hong-Xin Zhang, Shun-Yuan Lu, Xiao-Long Jin, Jian Fei, Zhu-Gang Wang
DHTKD1, a part of 2-ketoadipic acid dehydrogenase complex, is involved in lysine and tryptophan catabolism. Mutations in DHTKD1 block the metabolic pathway and cause 2-aminoadipic and 2-oxoadipic aciduria (AMOXAD), an autosomal recessive inborn metabolic disorder. In addition, a nonsense mutation in DHTKD1 we identified previously causes Charcot-Marie-Tooth disease (CMT) type 2Q, one of the most common inherited neurological disorders affecting the peripheral nerves in the musculature. However, the comprehensive molecular mechanism underlying CMT2Q remains elusive...
April 16, 2018: Molecular and Cellular Biology
https://www.readbyqxmd.com/read/29659058/polyethylene-glycol-solutions-rapidly-restore-and-maintain-axonal-continuity-neuromuscular-structures-and-behaviors-lost-after-sciatic-nerve-transections-in-female-rats
#7
Michelle Mikesh, Cameron L Ghergherehchi, Robert Louis Hastings, Amir Ali, Sina Rahesh, Karthik Jagannath, Dale R Sengelaub, Richard C Trevino, David M Jackson, George D Bittner
Complete severance of major peripheral mixed sensory-motor nerve proximally in a mammalian limb produces immediate loss of action potential conduction and voluntary behaviors mediated by the severed distal axonal segments. These severed distal segments undergo Wallerian degeneration within days. Denervated muscles atrophy within weeks. Slowly regenerating (∼1 mm/day) outgrowths from surviving proximal stumps that often nonspecifically reinnervate denervated targets produce poor, if any, restoration of lost voluntary behaviors...
April 16, 2018: Journal of Neuroscience Research
https://www.readbyqxmd.com/read/29657932/normative-ulnar-nerve-conduction-study-comparison-of-two-measurement-methods
#8
Shila Haghighat, Amir Ebrahim Mahmoodian, Lida Kianimehr
Background: Given the high prevalence rate of ulnar neuropathy and importance of its proper management, to have a baseline information about the normative value of motor nerve conduction of first dorsal interosseous (FDI) muscle and abductor digiti minimi muscle (ADM) and their differences as well as their relation with different demographic characteristics of our population, we aimed to determine and compare the mean value of motor conduction velocity of FDI and ADM at forearm and across the elbow among the normal population...
2018: Advanced Biomedical Research
https://www.readbyqxmd.com/read/29657529/impact-of-electro-neuro-feedback-on-postoperative-outcome-of-impacted-lower-third-molar-surgery
#9
Giacomo Oteri, Michele Pisano, Antonia Marcianò, Gabriele Cervino, Matteo Peditto
Objective: The purpose of this study was to evaluate the impact of a treatment with electro-neuro-feedback (ENF), a portable transcutaneous electrical nerve stimulation (TENS) device, on the clinical outcome and inflammatory biochemical parameters related to the impacted lower third molar surgery. Materials and Methods: A randomized, split-mouth, and single-blind study was conducted on 32 patients requiring lower third molars extractions and referred to the Oral Surgery Unit of the School of Dentistry of the University of Messina...
January 2018: European Journal of Dentistry
https://www.readbyqxmd.com/read/29657371/comparison-of-optic-nerve-sheath-diameter-between-both-eyes-a-bedside-ultrasonography-approach
#10
Uday Yanamandra, Amul Gupta, Srinivasa A Bhattachar, Sushma Yanamandra, Subrat K Das, Sagarika Patyal, Rajan Grewal, Velu Nair
Context: Optic nerve sheath diameter (ONSD) has long been accepted as a reliable proxy of intracranial pressure especially in critical care and bedside settings. The present consensus is to measure ONSD in both eyes and take average value, which is cumbersome and a potential cause of discomfort to the patient. Aim: We aim to compare the values of ONSD of the right and left eye in a random sample as measured by bedside ocular ultrasonography (USG) in Indian adults...
March 2018: Indian Journal of Critical Care Medicine
https://www.readbyqxmd.com/read/29656878/postoperative-headache-following-treatment-of-vestibular-schwannoma-a-literature-review
#11
REVIEW
Ahad Sabab, Jaspreet Sandhu, Stephen Bacchi, Alistair Jukes, Andrew Zacest
Vestibular schwannoma (VS) is a brain tumour arising from Schwann cells that is typically closely associated with the vestibulocochlear nerve. Post-operative headaches (POH) are a potentially common complication of surgery for VS. Greatly differing rates of POH have previously been reported, particularly with different surgical approaches. The aim of this review is to identify and summarise the available peer-reviewed evidence on rates of POH following operative (or radiosurgery) treatment for VS, in addition to information about the treatment and prognosis of POH in these patients...
April 12, 2018: Journal of Clinical Neuroscience: Official Journal of the Neurosurgical Society of Australasia
https://www.readbyqxmd.com/read/29656606/a-meta-analysis-on-the-surgical-management-of-paraganglioma-of-the-carotid-body-per-shamblin-class
#12
Thijs T G Jansen, Henri A M Marres, Johannes H A M Kaanders, Henricus P M Kunst
OBJECTIVE: The aim of the current study is to evaluate the risk associated with different types of surgery for carotid body paraganglioma of different Shamblin class. A meta-analysis was conducted to evaluate per tumour class, the local control, cranial nerve damage and complication rates of different techniques using internal carotid artery (ICA) and external carotid artery (ECA) ligation, clamping or bypassing, as well as the cranio-caudal versus caudo-cranial techniques. DESIGN: A meta-analysis is conducted after a systematic search in PubMed and the Cochrane library, in accordance with the PRISMA guidelines...
April 15, 2018: Clinical Otolaryngology
https://www.readbyqxmd.com/read/29656325/dosing-of-the-second-generation-cryoballoon-using-acute-time-to-pulmonary-vein-isolation-as-an-indicator-of-durable-ablation-in-a-canine-model
#13
Wilber Su, Nicolas Coulombe, Nicole Kirchhof, Erin Grassl, Dan Wittenberger
BACKGROUND: Rigid time-based dosing protocol(s) currently used in the clinic for cryoballoon ablation of atrial fibrillation may be inadequate to guide the circumferential and transmural cryothermal energy transfer across the pulmonary vein (PV) and may result in injury to collateral tissues or electrical gaps between the PV and left atrium (LA). OBJECTIVE: A physiologic endpoint (e.g., acute time-to-PV isolation a.k.a. time-to-effect; TTE) may be effective in the determination of a transmural lesion formation and may allow for individualized ablation dosing across each PV...
April 14, 2018: Journal of Interventional Cardiac Electrophysiology: An International Journal of Arrhythmias and Pacing
https://www.readbyqxmd.com/read/29652303/-respiratory-hypercapnic-hypoxic-training-is-an-effective-component-of-complex-therapy-of-polyneuropathy-in-children-with-diabetes-type-1
#14
K V Smirnov, Yu V Smirnova, V P Kulikov, O M Nazarkina
AIM: To study the effectiveness of respiratory hypercapnic-hypoxic training in complex treatment of neuropathy due to diabetes type 1. MATERIAL AND METHODS: Fifty children, 31 girls and 19 boys, were examined. The inclusion criteria were the presence of polyneuropathy, verified on the basis of clinical data and electromyographic changes. The patients were divided into 2 groups: the main group (n=25, 15 girls and 10 boys, mean age 12.9±1.8 years (M±SD) and the comparison group (n=25, 16 girls and 9 boys, mean age 13...
2018: Zhurnal Nevrologii i Psikhiatrii Imeni S.S. Korsakova
https://www.readbyqxmd.com/read/29650376/trapezius-muscle-transfer-for-restoration-of-elbow-extension-in-a-traumatic-brachial-plexus-injury
#15
Hamza M Alrabai, Martin G Gesheff, Ahmed I Hammouda, Janet D Conway
Voluntary elbow extension is essential for optimal upper limb positioning required for daily living activities, particularly above-shoulder maneuvers. The authors present a case of traumatic brachial plexus injury in which paralysis of the musculature selectively supplied by the posterior cord was based on magnetic resonance imaging and nerve conduction studies. An attempt at a radial nerve graft at another center was not effective. Ipsilateral hand function improved after multiple local tendon transfers were performed...
April 9, 2018: Journal of Hand Surgery
https://www.readbyqxmd.com/read/29649998/effectiveness-of-ultrasonography-and-nerve-conduction-studies-in-the-diagnosing-of-carpal-tunnel-syndrome-clinical-trial-on-accuracy
#16
Benedito Felipe Rabay Pimentel, Flávio Faloppa, Marcel Jun Sugawara Tamaoki, João Carlos Belloti
BACKGROUND: The aim of this study was to evaluate the effectiveness of two diagnostic tests routinely used for diagnosing carpal tunnel syndrome (CTS)-ultrasonography (US) and nerve conduction studies (NCS)-by comparing their accuracy based on surgical results, with the remission of paresthesia as the reference standard. METHODS: We enrolled 115 patients, all of the female gender with a high probability of a clinical diagnosis of CTS. All patients underwent US and NCS for a diagnosis and subsequent surgical treatment...
April 12, 2018: BMC Musculoskeletal Disorders
https://www.readbyqxmd.com/read/29649487/expression-patterns-and-role-of-pten-in-rat-peripheral-nerve-development-and-injury
#17
Hui Chen, Jianping Xiang, Junxia Wu, Bo He, Tao Lin, Qingtang Zhu, Xiaolin Liu, Canbin Zheng
Studies have suggested that phosphatase and tensin homolog (PTEN) plays an important role in neuroprotection and neuronal regeneration. To better understand the potential role of PTEN with respect to peripheral nerve development and injury, we investigated the expression pattern of PTEN at different stages of rat peripheral nerve development and injury and subsequently assessed the effect of pharmacological inhibition of PTEN using bpV(pic) on axonal regeneration in a rat sciatic nerve crush injury model. During the early stages of development, PTEN exhibits low expression in neuronal cell bodies and axons...
April 9, 2018: Neuroscience Letters
https://www.readbyqxmd.com/read/29644112/unusual-bilateral-sensory-innervation-of-the-dorsum-of-hand-by-lateral-antebrachial-cutaneous-nerve-a-case-report
#18
Neha, Hare Krishna
A 68-year-old male cadaver showed bilateral variation in the sensory innervation of the dorsum of hand. On the dorsum of right hand, first digit and lateral half of second digit were supplied by lateral antebrachial cutaneous nerve (LABCN); medial side of second digit and lateral side of third digit were supplied by superficial branch of radial nerve (SBRN) and medial side of third digit, the fourth and fifth digits were supplied by dorsal cutaneous branch of ulnar nerve (DBUN). On the dorsum of the left hand, lateral side of first digit was supplied by LABCN, medial side of first digit, the second and third digits as well as the lateral side of fourth digit were supplied by SBRN; medial side of fourth digit and fifth digit were supplied by DBUN...
March 2018: Anatomy & Cell Biology
https://www.readbyqxmd.com/read/29643833/-in-vivo-confocal-microscopic-evaluation-of-corneal-nerve-fibers-and-dendritic-cells-in-patients-with-beh%C3%A3-et-s-disease
#19
Gulfidan Bitirgen, Emine Tinkir Kayitmazbatir, Gunhal Satirtav, Rayaz A Malik, Ahmet Ozkagnici
Central and peripheral nervous system involvement may occur during the course of Behçet's disease (BD). In vivo corneal confocal microscopy (CCM) can detect corneal small fiber damage and immune cell density. The aim of this study was to assess central corneal sensitivity, corneal subepithelial nerve plexus morphology and dendritic cell (DC) density in patients with BD. Forty-nine consecutive patients with BD and 30 healthy control subjects were included in this cross-sectional study conducted at a tertiary referral university hospital...
2018: Frontiers in Neurology
https://www.readbyqxmd.com/read/29643608/the-immediate-effect-of-fes-and-tens-on-gait-parameters-in-patients-after-stroke
#20
Shin-Jun Park, Joong-San Wang
[Purpose] This study was conducted to compare the immediate effects of different electrotherapies on the gait parameters for stroke patients. [Subjects and Methods] Thirty patients with stroke were randomly assigned either to the functional electrical stimulation group or the transcutaneous electrical nerve stimulation group, with 15 patients in each group. Each electrotherapy was performed for 30 minutes simultaneously with the therapeutic exercise, and the changes in the spatial and temporal parameters of gait were measured...
December 2017: Journal of Physical Therapy Science
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