keyword
MENU ▼
Read by QxMD icon Read
search

Emg, nerve,

keyword
https://www.readbyqxmd.com/read/29150079/mechanism-hypotheses-for-the-electrophysiological-manifestations-of-two-cases-of-endplate-acetylcholinesterase-deficiency-related-congenital-myasthenic-syndrome
#1
Qingyun Ding, Dongchao Shen, Yi Dai, Youfang Hu, Yuzhou Guan, Mingsheng Liu, Liying Cui
OBJECTIVE: To summarize the electrophysiological characteristics of two cases of endplate acetylcholinesterase deficiency (EAD) related congenital myasthenic syndrome (CMS) caused by COLQ mutation and to discuss the possible mechanism of these electrophysiological phenomena. METHODS: Electrophysiological examinations were conducted including nerve conduction studies, routine electromyography (EMG), repetitive nerve stimulation (RNS) and single fiber EMG (SFEMG)...
November 14, 2017: Journal of Clinical Neuroscience: Official Journal of the Neurosurgical Society of Australasia
https://www.readbyqxmd.com/read/29142848/injury-of-the-external-branch-of-the-superior-laryngeal-nerve-in-thyroid-surgery
#2
REVIEW
Andre S Potenza, Vergilius J F Araujo Filho, Claudio R Cernea
The external branch of the superior laryngeal nerve (EBSLN) innervates the cricothyroid muscle (CTM) to promote lengthening and thinning of the vocal fold, thus increasing voice pitch. The close relation with the superior thyroid vessels (STV) puts the EBSLN in risk every time the superior pole of the thyroid is dissected. It travels downward to innervate the CTM, lateral to the thyroid cartilage and to the inferior pharyngeal constrictor muscle (IPCM), being eventually covered by this muscle fibers as it approaches its entry point...
October 2017: Gland Surgery
https://www.readbyqxmd.com/read/29128986/longitudinal-neurophysiological-assessment-of-intramuscular-type-a-botulin-toxin-in-healthy-humans
#3
L Lispi, L Leonardi, A Petrucci
The aim of this study is to assess the neurophysiological abnormalities of type A botulin toxin-infiltrated human muscle, and their evolution over time. Seried cMAP measurements, 3 and 20 Hz repetitive nerve stimulation, EMG, SFEMG over 3 months from toxin injection. Our findings consist in lack of decrement with 3 Hz repetitive nerve stimulation and facilitation with 20 Hz repetitive nerve stimulation; progressive increasing of jitter; early appearance of fibrillations; small and short motor unit action potential in the first 3 weeks, followed by increasing of MUAP amplitude and duration, with polyphasic morphology...
November 11, 2017: Neurological Sciences
https://www.readbyqxmd.com/read/29122116/mipo-of-proximal-humerus-fractures-through-an-anterolateral-acromial-approach-is-the-axillary-nerve-at-risk
#4
Josip Knežević, Mario Mihalj, Fabijan Čukelj, Arsen Ivanišević
PURPOSE: It is known that shoulder surgery may cause iatrogenic injury to the axillary nerve as a serious complication, but there is little evidence to indicate whether the axillary nerve is at risk of injury during an anterolateral acromial approach for minimally-invasive plate osteosynthesis (MIPO) of proximal humerus fractures. We hypothesised that this surgical method is safe for the axillary nerve and would preserve it from iatrogenic injury. MATERIALS AND METHODS: We conducted a prospective follow-up cohort study on 49 consecutive patients with proximal humerus fractures who were managed with MIPO through an anterolateral approach...
November 2017: Injury
https://www.readbyqxmd.com/read/29120129/the-role-of-electromyographic-blink-reflex-in-the-evaluation-of-headache-incidence
#5
Marijan Cesarik, Iris Zavoreo, Lucija Zadro-Matovina, Tomislav Madžar, Vanja Bašić Kes
Migraine and tension type headache are the most common disabling primary headache disorders. Epidemiological studies have documented their high prevalence and high socioeconomic and personal impacts. According to recent data, migraine ranks as the third most prevalent disorder and seventh-highest specific cause of disability worldwide. Tension-type headache has lifetime prevalence in the general population ranging between 30% and 78% in different studies. According to the International Classification of Headache Disorders, 3rd edition, there also are many other headaches but their incidence in general population is lower than the previously mentioned headaches...
March 2017: Acta Clinica Croatica
https://www.readbyqxmd.com/read/29118959/congenital-myasthenic-syndrome-due-to-dok7-mutations-in-a-family-from-chile
#6
Jorge A Bevilacqua, Marian Lara, Jorge Díaz, Mario Campero, Jessica Vázquez, Ricardo A Maselli
Congenital myasthenic syndromes (CMS) are neuromuscular transmission disorders caused by mutations in genes encoding neuromuscular junction proteins. A 61-year-old female and her older sister showed bilateral ptosis, facial and proximal limb weakness, and scoliosis since childhood. Another female sibling had milder signs, while other family members were asymptomatic. Facial nerve repetitive stimulation in the proband showed decrement of muscle responses. Single fiber EMG revealed increased jitter and blocking...
June 27, 2017: European Journal of Translational Myology
https://www.readbyqxmd.com/read/29118955/effect-of-electrical-stimulation-on-motor-nerve-regeneration-in-sciatic-nerve-ligated-mice
#7
Farzaneh Samiee, Mohammad-Reza Zarrindast
The purpose of this study was to investigate the effect of electrical stimulation on sciatic nerve regeneration and functional recovery of target muscles. Mice were randomly divided into 3 groups: ligated without electrical stimulation, ligated with electrical stimulation and control (non-ligated). The unilateral peripheral mononeuropathy was produced on the right hind limb. Sciatic nerve was then electrically stimulated daily for a period of 2 weeks (duration: 0.2 msec, frequency: 100Hz, amplitude: 15mA). Evoked surface EMG was recorded from biceps femoris (BF) and gluteus maximus (GM) muscles on the 3rd, 7th, 10th and 14th day after sciatic nerve ligation...
June 27, 2017: European Journal of Translational Myology
https://www.readbyqxmd.com/read/29110082/continuous-monitoring-of-the-recurrent-laryngeal-nerve
#8
Aitor De la Quintana Basarrate, Arantza Iglesias Martínez, Iciar Salutregui, Leire Agirre Etxabe, Ainhoa Arana González, Izaskun Yurrebaso Santamaría
OBJECTIVE: The objective of this study was to assess the safety and utility of continuous intraoperative neuromonitoring for the prevention of recurrent laryngeal nerve injury during thyroidectomy. METHODS: A prospective cohort study was conducted in consecutive patients undergoing thyroidectomy. Variations in amplitude and distal latency of the electromyogram (EMG) were assessed. In the case of suspicious events, restorative manoeuvers were performed to attempt to recover the potentials...
November 6, 2017: Langenbeck's Archives of Surgery
https://www.readbyqxmd.com/read/29100907/feasibility-and-safety-of-nerve-stimulator-attachment-to-energy-based-devices-a-porcine-model-study
#9
Sung-Chan Shin, Eui-Suk Sung, Sung-Won Choi, Sung-Dong Kim, Da-Woon Jung, Seok-Hyun Kim, Jung Hoon Ro, Jin-Choon Lee, Byung-Joo Lee
BACKGROUND: Recently, several energy-based devices (EBDs) have been developed and applied in the context of thyroid surgery. EBDs can reduce operation time, blood loss, and postoperative pain. Compared to conventional electrocautery, EBDs operate at a relatively lower temperature and produce minimal lateral tissue damage. Yet, during device operation, the tip of the EBD is hot enough to cause thermal nerve damage, increasing the need for surgeons to be cautious about EBD application. To increase the safety of EBDs, we attached nerve stimulators to the tips of two EBDs and compared them to conventional monopolar nerve stimulation using a porcine model...
October 31, 2017: International Journal of Surgery
https://www.readbyqxmd.com/read/29094077/quantitative-facial-electromyography-monitoring-after-hypoglossal-facial-jump-nerve-suture
#10
Jan Flasar, Gerd Fabian Volk, Thordis Granitzka, Katharina Geißler, Andrey Irintchev, Thomas Lehmann, Orlando Guntinas-Lichius
Objectives/Hypothesis: The time course of the reinnervation of the paralyzed face after hypoglossal-facial jump nerve suture using electromyography (EMG) was assessed. The relation to the clinical outcome was analyzed. Study Design: Retrospective single-center cohort study. Methods: Reestablishment of motor units was studied by quantitative EMG and motor unit potential (MUP) analysis in 11 patients after hypoglossal-facial jump nerve suture...
October 2017: Laryngoscope Investigative Otolaryngology
https://www.readbyqxmd.com/read/29081097/-effect-of-nerve-growth-factor-on-chronic-peripheral-neuropathy-in-rats-induced-by-1-bromopropane
#11
J Y Wu, J B Zhang, W J Chen, D Y Sun
Objective: To observe the effect of nerve growth factor (NGF) and Mecobalamin on chronic peripheral neuropathy in rats induced by 1-bromopropane. Methods: 36 male SD rats were exposed to 1-bromopropane vapor at concentrations of 4 000 mg/m(3), 6 hours per day, 5 days per week for 12 weeks. The rats were randomed divided into 4 groups, and treated by Mecobalamin for 300 μg/kg qd, NGF for 40 μg/kg qd, Mecobalamin+NGF with the dose as mentioned above, respecively. The control group were fed in normal condition...
July 20, 2017: Chinese Journal of Industrial Hygiene and Occupational Diseases
https://www.readbyqxmd.com/read/29065088/preventing-facial-nerve-stimulation-by-triphasic-pulse-stimulation-in-cochlear-implant-users-intraoperative-recordings
#12
Andreas Bahmer, Youssef Adel, Uwe Baumann
HYPOTHESIS: Triphasic pulse stimulation of the auditory nerve can prevent unintended facial nerve stimulation (FNS) due to a different electromyographic (EMG) input-output function compared with biphasic pulses. BACKGROUND: FNS is sometimes observed in cochlear implant (CI) users as an unpleasant side effect of electrical stimulation using biphasic pulse patterns (BPP). Clinical remedies to alleviate FNS are 1) to extend stimulus phase duration or 2) to completely deactivate the electrode...
December 2017: Otology & Neurotology
https://www.readbyqxmd.com/read/29061384/motoneuron-degeneration-in-the-trigeminal-motor-nucleus-innervating-the-masseter-muscle-in-dystonia-musculorum-mice
#13
M Ibrahim Hossain, Masao Horie, Nozomu Yoshioka, Masayuki Kurose, Kensuke Yamamura, Hirohide Takebayashi
Dystonia musculorum (dt) mice, which have a mutation in the Dystonin (Dst) gene, are used as animal models to investigate the human disease known as hereditary sensory and autonomic neuropathy type VI. Massive neuronal cell death is observed, mainly in the peripheral nervous system (PNS) of dt mice. We and others have recently reported a histopathological feature of these mice that neurofilament (NF) accumulates in various areas of the central nervous system (CNS), including motor pathways. Although dt mice show motor disorder and growth retardation, the causes for these are still unknown...
October 20, 2017: Neurochemistry International
https://www.readbyqxmd.com/read/29056361/compensatory-plasticity-in-diaphragm-and-intercostal-muscle-utilization-in-a-rat-model-of-als
#14
Yasin B Seven, Nicole L Nichols, Mia N Kelly, Orinda R Hobson, Irawan Satriotomo, Gordon S Mitchell
In SOD1(G93A) transgenic rat model of ALS, breathing capacity is preserved until late in disease progression despite profound respiratory motor neuron (MN) cell death. To explore mechanisms preserving breathing capacity, we assessed inspiratory EMG activity in diaphragm and external intercostal T2 (EIC2) and T5 (EIC5) muscles in anesthetized SOD1(G93A) rats at disease end-stage (20% decrease in body mass). We hypothesized that despite significant phrenic motor neuron loss and decreased phrenic nerve activity, diaphragm electrical activity and trans-diaphragmatic pressure (Pdi) are maintained to sustain ventilation...
October 19, 2017: Experimental Neurology
https://www.readbyqxmd.com/read/29054880/common-synaptic-input-to-motor-neurons-and-neural-drive-to-targeted-reinnervated-muscles
#15
D Farina, A M Castronovo, I Vujaklija, A Sturma, S Salminger, C Hofer, O C Aszmann
We compared the behaviour of motor neurons innervating their physiological muscle targets with motor neurons from the same spinal segment whose axons were surgically redirected to remnant muscles (targeted muscle reinnervation). The objective was to assess whether motor neurons with non-physiological innervation receive similar synaptic input and could be voluntary controlled as motor neurons with natural innervation. For this purpose, we acquired high-density EMG signals from the biceps brachii in 5 male trans-humeral amputees who underwent targeted reinnervation of this muscle by the ulnar nerve and from the first dorsal interosseous muscle of 5 healthy individuals to investigate the natural innervation of the ulnar nerve...
October 20, 2017: Journal of Neuroscience: the Official Journal of the Society for Neuroscience
https://www.readbyqxmd.com/read/29046798/monitoring-of-recurrent-and-superior-laryngeal-nerve-function-using-an-airwayscope%C3%A2-during-thyroid-surgery
#16
Kei Ijichi, Hiroshi Sasano, Megumi Harima, Shingo Murakami
In thyroid surgery, intraoperative identification and preservation of the recurrent laryngeal nerve (RLN) and superior laryngeal nerve external branch (SLNEB) are crucial. Several reports have proposed that electromyography (EMG) monitoring is an acceptable adjunct for identification and preservation of the RLN. However, a limited number of hospitals have access to an EMG monitoring system. Therefore, the development of another viable monitoring method is required. The aim of the present study was to design a new RLN and SLNEB monitoring method combining an Airwayscope™ (AWS) and a facial nerve stimulator...
October 2017: Molecular and Clinical Oncology
https://www.readbyqxmd.com/read/29046429/paired-corticospinal-motoneuronal-stimulation-increases-maximal-voluntary-activation-of-human-adductor-pollicis
#17
Jessica M D'Amico, Siobhan C Donges, Janet L Taylor
Paired corticospinal-motoneuronal stimulation (PCMS), which delivers repeated pairs of transcranial magnetic stimuli (TMS) and maximal motor nerve stimuli, can alter corticospinal transmission to low threshold motoneurones in the human spinal cord. To determine whether similar changes occur for high threshold motoneurones, we tested whether maximal voluntary activation and force can be affected by PCMS in healthy individuals. On two separate days, healthy participants (n=14) performed brief thumb adduction MVCs before and after a control protocol (TMS only) or PCMS designed to facilitate corticospinal transmission to adductor pollicis...
October 18, 2017: Journal of Neurophysiology
https://www.readbyqxmd.com/read/29033603/application-of-the-chronic-constriction-injury-of-the-partial-sciatic-nerve-model-to-assess-acupuncture-analgesia
#18
Mu-Jun Zhi, Kun Liu, Zhou-Li Zheng, Xun He, Tie Li, Guang Sun, Meng Zhang, Fu-Chun Wang, Xin-Yan Gao, Bing Zhu
PURPOSE: To validate and explore the application of a rat model of chronic constriction injury to the partial sciatic nerve in investigation of acupuncture analgesia. METHODS: Chronic constriction injury of the sciatic nerve (CCI) and chronic constriction injury of the partial sciatic nerve (CCIp) models were generated by ligating either the sciatic nerve trunk or its branches in rats. Both models were evaluated via paw mechanical withdrawal latency (PMWL), paw mechanical withdrawal threshold (PMWT), nociceptive reflex-induced electromyogram (C-fiber reflex EMG), and dorsal root ganglion immunohistochemistry...
2017: Journal of Pain Research
https://www.readbyqxmd.com/read/29032220/electodiagnostic-and-advanced-neuro-imaging-characterization-for-successful-treatment-of-a-spinal-extradural-arachnoid-cyst
#19
Tomoko Tanaka, Raja S Boddepalli, Douglas C Miller, Zongxian Cao, Vivek Sindhwani, Joan R Coates, Raghav Govindarajan, N Scott Litofsky
BACKGROUND: Spinal extradural arachnoid cysts (SEAC) are relatively uncommon. However, several large cysts have presented with spinal cord compression requiring surgical intervention. CASE DESCRIPTION: We report a patient with progressively enlarging SEAC causing worsening right S1 radiculopathy and gastrocnemius muscle atrophy. Electromyography (EMG) and nerve conduction studies (NCS) revealed an S1 motor radiculopathy. Serial magnetic resonance imaging (MRI) findings confirmed enlargement of the small cyst originating from the sacral thecal sac on the right while two smaller cyst on the left remained stable...
October 11, 2017: World Neurosurgery
https://www.readbyqxmd.com/read/29028499/fasciculations-in-nerve-and-muscle-disorders-a-prospective-study-of-muscle-ultrasound-compared-to-electromyography
#20
M T Johansson, H R Ellegaard, H Tankisi, A Fuglsang-Frederiksen, E Qerama
OBJECTIVES: We examined the clinical utility of muscle ultrasound (MUS) in detecting fasciculations in patients with nerve and muscle disorders (NMD) and investigated the impact on diagnostic sensitivity when combining electromyography (EMG) and MUS. METHODS: We included 58 consecutive patients suspected to have NMD and 38 healthy subjects (HS). Patients and HS underwent MUS in 14 skeletal and two bulbar muscles and the video recordings of the MUS were anonymised...
September 22, 2017: Clinical Neurophysiology: Official Journal of the International Federation of Clinical Neurophysiology
keyword
keyword
81799
1
2
Fetch more papers »
Fetching more papers... Fetching...
Read by QxMD. Sign in or create an account to discover new knowledge that matter to you.
Remove bar
Read by QxMD icon Read
×

Search Tips

Use Boolean operators: AND/OR

diabetic AND foot
diabetes OR diabetic

Exclude a word using the 'minus' sign

Virchow -triad

Use Parentheses

water AND (cup OR glass)

Add an asterisk (*) at end of a word to include word stems

Neuro* will search for Neurology, Neuroscientist, Neurological, and so on

Use quotes to search for an exact phrase

"primary prevention of cancer"
(heart or cardiac or cardio*) AND arrest -"American Heart Association"