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https://www.readbyqxmd.com/read/29315708/neuralgic-amyotrophy-in-children
#1
Fouad Al-Ghamdi, Partha S Ghosh
INTRODUCTION: Neuralgic amyotrophy (NA) is characterized by the clinical triad of pain, muscle weakness/atrophy and sensory symptoms. METHODS: We retrospectively identified children (≤18 years) over 15 years (2002-2017) from a single pediatric center. RESULTS: We had 22 patients (8 female; 6-18 years); pain was the presenting manifestation in all of them. Clinical weakness involving periscapular muscles was observed in 16 patients, scapular winging in 13...
January 9, 2018: Muscle & Nerve
https://www.readbyqxmd.com/read/29303097/-abdominal-wall-paresis-as-a-complication-of-herpes-zoster
#2
B Geboers, C J Verveld, I Bronner, A H W van de Ven
BACKGROUND: Herpes zoster is an illness which is especially common amongst the elderly in the Netherlands and which can express itself in various ways. Besides affecting sensory nerves, which leads to postherpetic pain, the varicella zoster virus may also invade motor nerves. CASE DESCRIPTION: A 73-year-old female went to the surgeon with symptoms of a painful swelling in the left lower abdomen. She had experienced herpes zoster at the site of the swelling a few months earlier...
2018: Nederlands Tijdschrift Voor Geneeskunde
https://www.readbyqxmd.com/read/29294514/-electrophysiological-and-pathological-features-of-peripheral-nerve-in-rats-exposed-to-1-bromopropane
#3
Q H Du, W J Chen, T Li, D Y Sun
Objective: To study the electrophysiological changes and pathological characteristics of peripheral nerve in rats exposed to 1-bromopropane through chronic inhalation. Methods: 40 male SD rats were randomed divided into 4 groups, and exposed to 1-bromopropane vapor at concentrations of 1 000 mg/m(3), 2 000 mg/m(3), 4 000 mg/m(3) and fresh air respectively, 6 hours per day, 5 days per week for 12 weeks. The changes of nerve conduction velocity (NCV) , electromyography (EMG) and pathology were observed. Results: After 4 weeks of exposure, the body weights of high dose group are lower than that of the control group...
September 20, 2017: Chinese Journal of Industrial Hygiene and Occupational Diseases
https://www.readbyqxmd.com/read/29288990/diaphragm-motor-responses-to-phrenic-nerve-stimulation-in-als-surface-and-needle-recordings
#4
Mamede de Carvalho, Susana Pinto, Michael Swash
OBJECTIVE: In studies of phrenic nerve (PN) conduction in amyotrophic lateral sclerosis (ALS) both motor response amplitude and latency have been reported as abnormal. However, correlation with diaphragm motor unit loss, and with diaphragmatic function has not been fully evaluated. METHODS: We studied 83 patients with ALS, and 21 patients referred with clinically suspected phrenic nerve lesions whose studies were normal. PN responses elicited by percutaneous electrical stimulation in the neck were recorded using superficial electrodes placed at the surface markings of the diaphragm on the chest wall, and a concentric needle electrode inserted into the diaphragmatic costal fibres...
December 13, 2017: Clinical Neurophysiology: Official Journal of the International Federation of Clinical Neurophysiology
https://www.readbyqxmd.com/read/29288989/fasciculation-potentials-and-decremental-responses-in-amyotrophic-lateral-sclerosis
#5
Yosuke Miyaji, Yuki Hatanaka, Mana Higashihara, Takamichi Kanbayashi, Fumiaki Tanaka, Masahiro Sonoo
OBJECTIVE: The positive correlation between fasciculation potentials (FPs) and decremental responses in repetitive nerve stimulation test (RNS) in amyotrophic lateral sclerosis (ALS) patients has been described based on only one past study. We revisited this issue. METHODS: Subjects consisted of 30 prospectively-enrolled ALS patients on whom both needle EMG and RNS were conducted in the same trapezius muscle. Fasciculation potentials (FPs) were identified off-line from the restored 3-min signal...
November 21, 2017: Clinical Neurophysiology: Official Journal of the International Federation of Clinical Neurophysiology
https://www.readbyqxmd.com/read/29283098/electrophysiological-and-histopathological-evaluation-of-effects-of-sodium-2-mercaptoethanesulfonate-used-for-middle-ear-surgery-on-facial-nerve-functions
#6
Oğuz Kadir Eğilmez, Numan Kökten, Mustafa Baran, M Tayyar Kalcıoğlu, Işın Doğan Ekici, Muhammet Tekin
OBJECTIVE: Sodium-2-mercaptoethanesulfonate (MESNA) is widely used in medicine because of its antioxidant and mucolytic effects. In recent years, it has been used in otologic surgery. Because it cleaves disulfide bonds, it is used to easily dissect the epithelial matrix in cholesteatoma and atelectasis. In this study, we hypothesized that MESNA does not have any toxic effect on the facial nerve, and the effects of MESNA on the facial nerve were examined histologically and electrophysiologically...
December 14, 2017: Journal of International Advanced Otology
https://www.readbyqxmd.com/read/29277261/the-contribution-of-the-supraspinatus-muscle-at-sub-maximal-contractions
#7
David Phillips, Peter Kosek, Andrew Karduna
During maximum effort, the supraspinatus muscle contributes approximately 50% of the torque need to elevate the arm, but this has not been examined at sub-maximal levels. The purpose of this study was to determine the contribution of the supraspinatus muscle to shoulder elevation at sub-maximal levels. Seven healthy subjects (four males, three females) performed isometric ramp contractions at the shoulder. Middle deltoid electromyography (EMG) and force applied at the wrist were collected before and after a suprascapular nerve block...
December 15, 2017: Journal of Biomechanics
https://www.readbyqxmd.com/read/29241172/neurophysiological-monitoring-and-awake-craniotomy-for-resection-of-intracranial-gliomas
#8
Taiichi Saito, Manabu Tamura, Mikhail F Chernov, Soko Ikuta, Yoshihiro Muragaki, Takashi Maruyama
Aggressive resection of intracranial gliomas has a positive impact on patients' prognosis, but is associated with a risk of neurological complications. For preservation of brain functions and avoidance of major postoperative morbidity various methods of intraoperative neurophysiological monitoring have been introduced into clinical practice. At present, somatosensory evoked potentials (SSEP), motor evoked potentials (MEP), visual evoked potentials (VEP), brainstem auditory evoked potentials (BAEP), and electrocorticography (ECoG) are used routinely during neurosurgical procedures...
2018: Progress in Neurological Surgery
https://www.readbyqxmd.com/read/29217407/can-we-predict-intermediate-syndrome-a-review
#9
REVIEW
Chanika Alahakoon, Tharaka Lagath Dassanayake, Indika Bandara Gawarammana, Vajira Senaka Weerasinghe
INTRODUCTION: Ingestion of organophosphorus insecticides (OPI) is a common method of deliberate self harm in the developing world. Deaths mainly follow as a result of the respiratory failure associated with both cholinergic crisis and the intermediate syndrome. Even though death can be prevented by early mechanical ventilation of these patients, limited studies are available regarding the prediction of intermediate syndrome and subsequent respiratory failure. OBJECTIVE: To systematically review articles that are published with regard to possible prediction of intermediate syndrome using clinical, biochemical and electrophysiological parameters...
December 5, 2017: Neurotoxicology
https://www.readbyqxmd.com/read/29214985/non-invasive-peripheral-nerve-stimulation-via-focused-ultrasound-i-in-vivo-i
#10
Matthew Eric Downs, Stephen A Lee, Georgiana Yang, Seaok Kim, Qi Wang, Elisa E Konofagou
Focused ultrasound (FUS) has been employed on a wide range of clinical applications to safely and non-invasively achieve desired effects that have previously required invasive and lengthy procedures with conventional methods. Conventional electrical neuromodulation therapies that are applied to the peripheral nervous system (PNS) are invasive and/or non-specific. Recently, focused ultrasound has demonstrated the ability to modulate the central nervous system and ex vivo peripheral neurons. Here, for the first time, noninvasive stimulation of the sciatic nerve eliciting a physiological response in vivo is demonstrated with FUS...
December 7, 2017: Physics in Medicine and Biology
https://www.readbyqxmd.com/read/29214617/gehs-neurophysiological-classification-system-for-patients-with-neuropathy-of-the-ulnar-nerve-at-the-elbow
#11
David G Greathouse, Greg Ernst, John S Halle, Scott W Shaffer
BACKGROUND: Neuropathy of the ulnar nerve at the elbow is one of a number of muscle-related and nerve-related disorders that affect people performing intensive work with their hands and upper extremities, and is the second most prevalent peripheral nerve mononeuropathy. There are several classification systems currently being used by the medical community for patients with neuropathy of the ulnar nerve at the elbow. However, few of these classification systems include the clinical electrophysiologic parameters nerve conduction (NCS) and electromyographic (EMG) studies...
October 2017: U.S. Army Medical Department Journal
https://www.readbyqxmd.com/read/29191982/case-studies-in-physiology-exercise-induced-diaphragm-fatigue-in-a-paralympic-champion-rower-with-spinal-cord-injury
#12
Nicholas B Tiller, Thomas R Aggar, Christopher R West, Lee M Romer
INTRODUCTION: The aim of this case report was to determine whether maximal upper-body exercise was sufficient to induce diaphragm fatigue in a Paralympic champion adaptive rower with low-lesion spinal cord injury (SCI). CASE PRESENTATION: An elite arms-only oarsman (age 28 y, stature 1.89 m, mass 90.4 kg) with motor-complete SCI (T12) performed a 1000 m time-trial on an adapted rowing ergometer. Exercise measurements comprised pulmonary ventilation and gas exchange, diaphragm EMG-derived indices of neural respiratory drive and intrathoracic pressure-derived indices of respiratory mechanics...
November 30, 2017: Journal of Applied Physiology
https://www.readbyqxmd.com/read/29188681/targeted-muscle-reinnervation-for-improved-control-of-myoelectric-upper-limb-prostheses
#13
G Vadalà, G Di Pino, L Ambrosio, L Diaz Balzani, V Denaro
Targeted muscle reinnervation (TMR) is a novel surgical technique developed to improve the control of myoelectric upper limb prostheses. Nerves transected by the amputation, which retain their original motor pathways even after being severed, are redirected to residual denervated muscles that serve as target for consequent reinnervation. Once the process is complete, reinnervated muscles will contract upon voluntary activation of transferred nerves while attempting to move missing regions of the amputated limb, generating EMG signals that can be recorded and used to control a prosthetic device...
October 2017: Journal of Biological Regulators and Homeostatic Agents
https://www.readbyqxmd.com/read/29187556/time-course-of-functional-recovery-during-first-three-months-after-surgical-transection-and-repair-of-nerves-to-feline-soleus-and-lateral-gastrocnemius-muscles
#14
Robert J Gregor, Huub Maas, Margarita A Bulgakova, Alanna Oliver, Arthur W English, Boris I Prilutsky
Locomotion outcomes after peripheral nerve injury and repair in cats have been described in the literature for the period immediately following the injury (muscle denervation period) and then again for an ensuing period of long-term recovery (at three months and longer) resulting in muscle self-reinnervation. Little is known about the changes in muscle activity and walking mechanics during mid-recovery, i.e. the early reinnervation period that takes place between 5 and 10 weeks of recovery. Here, we investigated hindlimb mechanics and EMG activity of ankle extensors in six cats during level and slope walking before and every two weeks thereafter in a 14-week period of recovery after the soleus (SO) and lateral gastrocnemius (LG) muscle nerves in one hindlimb were surgically transected and repaired...
November 29, 2017: Journal of Neurophysiology
https://www.readbyqxmd.com/read/29183339/effect-of-emg-triggered-neuromuscular-electrical-stimulation-with-bilateral-arm-training-on-hemiplegic-shoulder-pain-and-arm-function-after-stroke-a-randomized-controlled-trial
#15
Li-Ling Chuang, You-Lin Chen, Chih-Chung Chen, Yen-Chen Li, Alice May-Kuen Wong, An-Lun Hsu, Ya-Ju Chang
BACKGROUND: Hemiplegic shoulder pain is a frequent complication after stroke, leading to limited use of the affected arm. Neuromuscular electrical stimulation (NMES) and transcutaneous electrical nerve stimulation (TENS) are two widely used interventions to reduce pain, but the comparative efficacy of these two modalities remains uncertain. The purpose of this research was to compare the immediate and retained effects of EMG-triggered NMES and TENS, both in combination with bilateral arm training, on hemiplegic shoulder pain and arm function of stroke patients...
November 28, 2017: Journal of Neuroengineering and Rehabilitation
https://www.readbyqxmd.com/read/29178917/the-influence-of-surface-emg-triggered-multichannel-electrical-stimulation-on-sensomotoric-recovery-in-patients-with-lumbar-disc-herniation-study-protocol-for-a-randomized-controlled-trial-reco
#16
Sara Lener, Christoph Wipplinger, Sebastian Hartmann, Wolfgang N Löscher, Sabrina Neururer, Matthias Wildauer, Claudius Thomé, Anja Tschugg
BACKGROUND: Intervertebral disc degeneration is one of the most common reasons for chronic low back pain and sensomotoric deficits, often treated by lumbar sequestrectomy. Nevertheless, the prognostic factors relevant for time and quality of recovery, of the surgical procedure, relative to conservative treatment, remain controversial and require further investigation. Surface electrical stimulation (SES) may be an influential intervention, already showing positive impact on motor and sensory recovery in different patient groups...
November 25, 2017: Trials
https://www.readbyqxmd.com/read/29161172/development-of-an-attachable-endoscopic-nerve-stimulator-for-intraoperative-neuromonitoring-during-endoscopic-or-robotic-thyroidectomy
#17
Eui-Suk Sung, Jin-Choon Lee, Seok Hyun Kim, Sung-Chan Shin, Da-Woon Jung, Byung-Joo Lee
We developed a simple attachable endoscopic nerve stimulator that can be connected to monopolar cauterization surgical instruments. This study on porcine models aimed to investigate the feasibility and efficacy of an attachable endoscopic nerve stimulator for intraoperative neuromonitoring (IONM) before application in humans. We evaluated the electromyography (EMG) amplitudes of 8 recurrent laryngeal nerves in 4 pigs with a conventional nerve probe and the attachable endoscopic nerve stimulator. The attachable endoscopic nerve stimulator was feasible and safe in all cases...
November 1, 2017: Otolaryngology—Head and Neck Surgery
https://www.readbyqxmd.com/read/29150079/mechanism-hypotheses-for-the-electrophysiological-manifestations-of-two-cases-of-endplate-acetylcholinesterase-deficiency-related-congenital-myasthenic-syndrome
#18
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
#19
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
#20
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
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