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https://www.readbyqxmd.com/read/28091345/propofol-as-a-risk-factor-for-icu-acquired-weakness-in-septic-patients-with-acute-respiratory-failure
#1
Peter A Abdelmalik, Goran Rakocevic
BACKGROUND: Critical illness polyneuropathy (CIN) and critical illness myopathy (CIM), together "ICU-Acquired weakness (ICUAW)," occur frequently in septic patients. One of the proposed mechanisms for ICUAW includes prolonged inactivation of sodium channels. Propofol, used commonly in patients with acute respiratory failure (ARF), primarily acts via enhancement of GABAergic transmission but may also increase sodium channel inactivation, suggesting a potential interaction. METHODS: Electronic medical records and EMG reports of patients with ICUAW and a diagnosis of either sepsis, septicaemia, severe sepsis, or septic shock, concurrent with a diagnosis of acute respiratory failure (ARF), were retrospectively analyzed in a single center university hospital...
January 16, 2017: Canadian Journal of Neurological Sciences. le Journal Canadien des Sciences Neurologiques
https://www.readbyqxmd.com/read/28087164/anatomic-study-and-electromyographic-analysis-of-the-teres-minor-muscle
#2
Junichiro Hamada, Akimoto Nimura, Kunio Yoshizaki, Keiichi Akita
BACKGROUND: The teres minor muscle is a focused topic on the treatment of massive rotator cuff tears and reverse total shoulder arthroplasty. Its precise anatomy and function have not been completely investigated. The purposes of this study were to anatomically investigate the muscle and analyze electromyographic (EMG) activities during shoulder motion. METHODS: This anatomic study used 20 shoulders from deceased donors (mean age, 75.0 years). EMG data were recorded from 10 healthy volunteers (mean age, 21...
January 10, 2017: Journal of Shoulder and Elbow Surgery
https://www.readbyqxmd.com/read/28078360/multimodal-nerve-monitoring-during-periacetabular-osteotomy-identifies-surgical-steps-associated-with-risk-of-injury
#3
Eduardo N Novais, Travis Heare, Lauryn Kestel, Patricia Oliver, Willy Boucharel, Jason Koerner, Kim Strupp
PURPOSE: Sciatic nerve palsy after periacetabular osteotomy (PAO) is a serious complication. The purpose of this study was to determine whether a multimodal sciatic monitoring technique allows for identification of surgical steps that place the sciatic nerve at risk. METHODS: Transcranial electrical motor evoked potentials (TcMEPs), somatosensory evoked potentials (SSEPs), and spontaneous electromyography (EMG) were monitored in a consecutive series of 34 patients (40 hips) who underwent PAO for the treatment of symptomatic hip dysplasia between January 2012 and November 2014...
January 11, 2017: International Orthopaedics
https://www.readbyqxmd.com/read/28077666/motor-plan-differs-for-young-and-older-adults-during-similar-movements
#4
Agostina Casamento Moran, Yen-Ting Chen, Neha Lodha, Basma Yacoubi, Evangelos A Christou
Older adults exhibit altered activation of the agonist and antagonist muscles during goal-directed movements compared with young adults. However, it remains unclear whether the differential activation of the antagonistic muscles in older adults results from an impaired motor plan or an altered ability of the muscle to contract. The purpose of this study, therefore, was to determine whether the motor plan differs for young and older adults. Ten young (26.1 ± 4.3 yrs, 4 females) and sixteen older (71.9 ± 6...
January 11, 2017: Journal of Neurophysiology
https://www.readbyqxmd.com/read/28072633/visual-motion-processing-subserves-faster-visuomotor-reaction-in-badminton-players
#5
Thorben Hülsdünker, Heiko K Strüder, Andreas Mierau
INTRODUCTION: Athletes participating in ball or racquet sports have to respond to visual stimuli under critical time pressure. Previous studies used visual contrast stimuli to determine visual perception and visuomotor reaction in athletes and non-athletes however, especially ball and racquet sports are characterized by motion rather than contrast visual cues. Since visual contrast and motion signals are processed in different cortical regions, this study aimed to determine differences in perception and processing of visual motion between athletes and non-athletes...
January 9, 2017: Medicine and Science in Sports and Exercise
https://www.readbyqxmd.com/read/28068376/an-objective-functional-characterisation-of-head-movement-impairment-in-individuals-with-neck-muscle-weakness-due-to-amyotrophic-lateral-sclerosis
#6
Silvia Pancani, Wendy Tindale, Pamela J Shaw, Christopher J McDermott, Claudia Mazzà
BACKGROUND: Neck muscle weakness and head drop are well recognised in patients with Amyotrophic lateral sclerosis (ALS), but an objective characterisation of the consequent head movement impairment is lacking. The aim of this study was to quantitatively characterise head movements in ALS compared to aged matched controls. METHODS: We evaluated two groups, one of thirteen patients with ALS and one of thirteen age-matched controls, during the execution of a series of controlled head movements, performed while wearing two inertial sensors attached on the forehead and sternum, respectively...
2017: PloS One
https://www.readbyqxmd.com/read/28060782/high-density-emg-reveals-novel-evidence-of-altered-masseter-muscle-activity-during-symmetrical-and-asymmetrical-bilateral-jaw-clenching-tasks-in-people-with-chronic-nonspecific-neck-pain
#7
Marco Testa, Tommaso Geri, Leonardo Gizzi, Deborah Falla
OBJECTIVES: To characterize the distribution of masseter muscle activity and force control during bilateral jaw clenching tasks in people with chronic nonspecific neck pain, without an associated temporomandibular disorder. METHODS: Twelve volunteers with nonspecific neck pain and 12 age-matched and sex-matched healthy individuals participated. Submaximal symmetrical and asymmetrical bilateral jaw clenching was performed with and without visual feedback of force...
February 2017: Clinical Journal of Pain
https://www.readbyqxmd.com/read/28060526/effects-of-dual-monitor-computer-work-versus-laptop-work-on-cervical-muscular-and-proprioceptive-characteristics-of-males-and-females
#8
Amanda M Farias Zuniga, Julie N Côté
OBJECTIVE: The effects of performing a 90-minute computer task with a laptop versus a dual monitor desktop workstation were investigated in healthy young male and female adults. BACKGROUND: Work-related musculoskeletal disorders are common among computer (especially female) users. Laptops have surpassed desktop computer sales, and working with multiple monitors has also become popular. However, few studies have provided objective evidence on how they affect the musculoskeletal system in both genders...
December 1, 2016: Human Factors
https://www.readbyqxmd.com/read/28059942/efficacy-of-biofeedback-therapy-in-the-treatment-of-dyssynergic-defecation-in-community-dwelling-elderly-women
#9
Miguel A Simón, Ana M Bueno
AIM OF THE STUDY: The aim of this study was to evaluate the efficacy of biofeedback therapy in the treatment of dyssynergic defecation in chronically constipated community-dwelling elderly women. MATERIALS AND METHODS: After an initial assessment phase carried out during 1 month, 20 chronically constipated women with dyssynergic defecation were randomly assigned to either electromyographic biofeedback (EMG-BF) group (n=10) or control group (n=10). Outcome measures used to evaluate the efficacy of treatment were weekly stool frequency, sensation of incomplete evacuation, difficulty evacuation level, mean EMG-activity (μV) of the external anal sphincter during straining to defecate and Anismus index...
January 5, 2017: Journal of Clinical Gastroenterology
https://www.readbyqxmd.com/read/28056872/a-limb-girdle-myopathy-phenotype-of-runx2-mutation-in-a-patient-with-cleidocranial-dysplasia-a-case-study-and-literature-review
#10
Sung-Ju Hsueh, Ni-Chung Lee, Shu-Hua Yang, Han-I Lin, Chin-Hsien Lin
BACKGROUND: Cleidocranial dysplasia (CCD) is a rare hereditary disorder that arises from heterozygous loss of function mutations in the runt-related transcription factor 2 (RUNX2) gene. As RUNX2 is mainly expressed in osteoblasts, CCD typically affects the skeletal and dental systems. Few studies have investigated RUNX2 mutation effects on non-skeletal systems. Here, we describe limb-girdle myopathy, an uncommon phenotype of CCD, in a patient with a heterozygous missense mutation (p.R225Q) in the RUNX2 gene...
January 6, 2017: BMC Neurology
https://www.readbyqxmd.com/read/28042994/assessing-neuromuscular-junction-stability-from-stimulated-emg-in-children
#11
Matthew C Pitt, John C Mchugh, Jacquie Deeb, Ralph A Smith
OBJECTIVE: We present our 9-year experience of stimulated EMG potential analysis using concentric electrodes (SPACE) to evaluate neuromuscular junction (NMJ) disorders in awake children. The technique uses high frequency filtration of stimulated motor unit potentials and applies peak detection software to estimate mean consecutive difference (MCD). METHODS: SPACE was carried out in orbicularis oculi of 878 children (377 girls; median age 47months) between 2007 and 2015, stimulating the facial nerve with a monopolar cathode...
December 3, 2016: Clinical Neurophysiology: Official Journal of the International Federation of Clinical Neurophysiology
https://www.readbyqxmd.com/read/28029696/vastus-medialis-and-lateralis-activity-during-voluntary-and-stimulated-contractions
#12
Rosa M S Visscher, Diego Rossi, Bernd Friesenbichler, Markus Dohm-Acker, Thomas Rosenheck, Nicola A Maffiuletti
INTRODUCTION: The purpose of this study was to investigate the relative activation of vastus medialis (VM) and vastus lateralis (VL) muscles during voluntary and stimulated isometric contractions at different joint angles. METHODS: Sixteen healthy men (mean age: 26 years) completed maximal voluntary and stimulated contractions of the knee extensor muscles at 30°, 65°, and 100° of knee flexion. VM/VL ratios were calculated from voluntary EMG and evoked torque recordings...
December 28, 2016: Muscle & Nerve
https://www.readbyqxmd.com/read/28007355/isolated-rapid-eye-movement-sleep-without-atonia-in-amyotrophic-lateral-sclerosis
#13
Monica Puligheddu, Patrizia Congiu, Debora Aricò, Francesco Rundo, Giuseppe Borghero, Francesco Marrosu, Maria Livia Fantini, Raffaele Ferri
OBJECTIVE: The aim of this study was to quantitatively analyze, with the most recent and advanced tools, the presence of periodic leg movements during sleep (PLMS) and/or rapid eye movement (REM) sleep without atonia (RSWA), in a group of patients with amyotrophic lateral sclerosis (ALS), and to assess their eventual correlation with the clinical severity of the disease. METHODS: Twenty-nine ALS patients were enrolled (mean age 63.6 years) along with 28 age-matched "normal" controls (mean age 63...
October 2016: Sleep Medicine
https://www.readbyqxmd.com/read/28004392/a-critical-period-of-corticomuscular-and-emg-emg-coherence-detection-in-9-25-week-old-healthy-infants
#14
Anina Ritterband-Rosenbaum, Anna Herskind, Xi Li, Maria Willerslev-Olsen, Mikkel Damgaard Olsen, Simon Francis Farmer, Jens Bo Nielsen
The early postnatal development of functional corticospinal connections in human infants is not fully clarified. We used EEG and EMG to investigate the development of corticomuscular and intramuscular coherence as indicators of functional corticospinal connectivity in healthy infants aged 1-66 weeks. EEG was recorded over leg and hand area of motor cortex. EMG recordings were made from right ankle dorsiflexor and right wrist extensor muscles. Quantification of the amount of corticomuscular coherence in the 20-40 Hz frequency band showed a significantly larger coherence for infants aged 9-25 weeks compared to younger and older infants...
December 22, 2016: Journal of Physiology
https://www.readbyqxmd.com/read/28002176/effects-of-synergist-vs-non-synergist-split-resistance-training-routines-on-acute-neuromuscular-performance-in-resistance-trained-men
#15
Rafael P M Castanheira, João B Ferreira-Junior, Rodrigo Celes, Valdinar A Rocha-Junior, Eduardo L Cadore, Mikel Izquierdo, Martim Bottaro
The aim of this study was to evaluate the effects of synergist vs. non-synergist split resistance training routines on the acute neuromuscular performance of the elbow flexors in resistance trained men. Fifteen resistance trained men (age: 23.2 ± 4.0 years, height: 173.0 ± 0.08 cm, and body mass: 78.38 ± 9.31 kg) randomly performed three training routines separated by an interval of 7 days: 1) pull-pull exercises (synergist routine, SN), which included 6 sets of 10 maximum repetitions (RM) of a seated row exercise followed by 4 sets of 10RM of the preacher biceps curl exercise; 2) push-pull exercises (non-synergist routine, NS), which included 6 sets of 10RM of the bench press exercise followed by 4 sets of 10RM of the preacher biceps curl exercise; and 3) Control, which included 4 sets of 10RM of the preacher biceps curl exercise...
December 8, 2016: Journal of Strength and Conditioning Research
https://www.readbyqxmd.com/read/27990244/electrically-and-hybrid-induced-muscle-activations-effects-of-muscle-size-and-fiber-type
#16
Kelly Stratton, Pouran D Faghri
The effect of three electrical stimulation (ES) frequencies (10, 35, and 50 Hz) on two muscle groups with different proportions of fast and slow twitch fibers (abductor pollicis brevis (APB) and vastus lateralis (VL)) was explored. We evaluated the acute muscles' responses individually and during hybrid activations (ES superimposed by voluntary activations). Surface electromyography (sEMG) and force measurements were evaluated as outcomes. Ten healthy adults (mean age: 24.4 ± 2.5 years) participated after signing an informed consent form approved by the university Institutional Review Board...
June 13, 2016: European Journal of Translational Myology
https://www.readbyqxmd.com/read/27980328/muscular-activity-may-improve-in-edentulous-patients-after-implant-treatment
#17
Kelvin I Afrashtehfar, Martin Schimmel
Data sourcesMedline via Pubmed and the Cochrane Library were searched from January 1980 to September 2013. This was complemented by a manual search of the magazines Deutsche Zahnaerztliche Zeitung, Quintessenz, Zeitschrift für Zahnärztliche Implantologie, Schweizerische Monatszeitschrift and Implantologie. Additionally, the list of reference s of all selected full-text articles and related reviews were further scrutinised for potential included studies in English or German.Study selectionThree review authors independently searched for clinical trials that assessed the muscular activity in the intervention groups: edentulous patients treated with implant-overdentures (IODs) and implant-supported fixed dental prostheses (ISFDPs) and the comparison groups: dentates and edentulous patients treated with mucosa-borne complete removable dental prostheses (CRDPs)...
December 2016: Evidence-based Dentistry
https://www.readbyqxmd.com/read/27942980/age-differences-in-physiological-responses-to-self-paced-and-incremental-formula-see-text-testing
#18
Lauren A Jenkins, Alexis R Mauger, James G Hopker
PURPOSE: A self-paced maximal exercise protocol has demonstrated higher [Formula: see text] values when compared against traditional tests. The aim was to compare physiological responses to this self-paced [Formula: see text] protocol (SPV) in comparison to a traditional ramp [Formula: see text] (RAMP) protocol in young (18-30 years) and old (50-75 years) participants. METHODS: Forty-four participants (22 young; 22 old) completed both protocols in a randomised, counter-balanced, crossover design...
December 10, 2016: European Journal of Applied Physiology
https://www.readbyqxmd.com/read/27933358/embodiment-and-the-origin-of-interval-timing-kinematic-and-electromyographic-data
#19
Caspar Addyman, Sinead Rocha, Lilian Fautrelle, Robert M French, Elizabeth Thomas, Denis Mareschal
Recent evidence suggests that interval timing (the judgment of durations lasting from approximately 500 ms. to a few minutes) is closely coupled to the action control system. We used surface electromyography (EMG) and motion capture technology to explore the emergence of this coupling in 4-, 6-, and 8-month-olds. We engaged infants in an active and socially relevant arm-raising task with seven cycles and response period. In one condition, cycles were slow (every 4 s); in another, they were fast (every 2 s)...
December 9, 2016: Experimental Brain Research. Experimentelle Hirnforschung. Expérimentation Cérébrale
https://www.readbyqxmd.com/read/27922494/approach-to-the-patient-with-hyperckemia
#20
Shannon L Venance
PURPOSE OF REVIEW: Neurologists commonly receive consultation requests regarding the evaluation of patients with an elevated serum creatine kinase (CK), a condition known as hyperCKemia. This article outlines an approach to the history and examination of patients with hyperCKemia in order to narrow the localization and differential of an elevated CK and guide possible next steps. This article aims to help clinicians identify treatable or reversible etiologies as well as those that will change management...
December 2016: Continuum: Lifelong Learning in Neurology
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