The Experts below are selected from a list of 56253 Experts worldwide ranked by ideXlab platform
Hiroshi Akima - One of the best experts on this subject based on the ideXlab platform.
-
validity of surface Electromyography for vastus intermedius muscle assessed by needle Electromyography
Journal of Neuroscience Methods, 2011Co-Authors: Kohei Watanabe, Hiroshi AkimaAbstract:Abstract Recently, a new recording technique for surface Electromyography (EMG) of the deeper muscle component of the quadriceps femoris muscle group, i.e., vastus intermedius (VI) muscle, from the distal portion of the VI muscle has been developed; however, the effect of electrode location on EMG signal of the VI muscle remains unclear. The aim of this study is to compare neuromuscular activation detected at the middle and distal portions of the VI muscle, in order to clarify whether the surface EMG of the VI muscle can be used to assess the neuromuscular activation of the entire muscle. Six healthy men participated in this study. During incremental ramp contraction of isometric knee extension (∼30% of maximal voluntary contraction), needle EMG was recorded from the middle and distal regions of the VI muscle and surface EMG was performed at the distal region of the VI muscle. Excellent correlation was observed between needle EMG at the middle and distal regions (r = 0.897–0.984, p
-
validity of surface Electromyography for vastus intermedius muscle assessed by needle Electromyography
Journal of Neuroscience Methods, 2011Co-Authors: Kohei Watanabe, Hiroshi AkimaAbstract:Recently, a new recording technique for surface Electromyography (EMG) of the deeper muscle component of the quadriceps femoris muscle group, i.e., vastus intermedius (VI) muscle, from the distal portion of the VI muscle has been developed; however, the effect of electrode location on EMG signal of the VI muscle remains unclear. The aim of this study is to compare neuromuscular activation detected at the middle and distal portions of the VI muscle, in order to clarify whether the surface EMG of the VI muscle can be used to assess the neuromuscular activation of the entire muscle. Six healthy men participated in this study. During incremental ramp contraction of isometric knee extension (~30% of maximal voluntary contraction), needle EMG was recorded from the middle and distal regions of the VI muscle and surface EMG was performed at the distal region of the VI muscle. Excellent correlation was observed between needle EMG at the middle and distal regions (r=0.897-0.984, p<0.001). No significant difference was observed between correlation coefficient of surface EMG detected at the distal versus needle EMG detected at the middle and that of surface EMG detected at distal versus needle EMG detected at distal (p<0.05). These results suggest that surface EMG at the distal portion of the VI muscle, which is the only region available for surface EMG, can be used to evaluate global neuromuscular activation of the VI muscle during isometric contraction at a low force level.
Kenneth I Glassberg - One of the best experts on this subject based on the ideXlab platform.
-
short pelvic floor electromyographic lag time a novel noninvasive approach to document detrusor overactivity in children with lower urinary tract symptoms
The Journal of Urology, 2013Co-Authors: Andrew J Combs, Jason P Van Batavia, Mark Horowitz, Kenneth I GlassbergAbstract:Purpose: Noninvasive uroflow with simultaneous Electromyography can measure electromyographic lag time, ie the interval between the start of pelvic floor relaxation and the start of urine flow (normally 2 to 6 seconds). Intuitively one would expect that in patients experiencing urgency secondary to detrusor overactivity the lag time would be short or even a negative value. We studied whether short electromyographic lag time on uroflow with Electromyography actually correlates with documented detrusor overactivity on urodynamics.Materials and Methods: We reviewed 2 separate and distinct cohorts of 50 neurologically and anatomically normal children with persistent lower urinary tract symptoms who were evaluated by uroflow with simultaneous Electromyography and videourodynamics. Group 1 consisted of 30 boys and 20 girls (mean age 7.8 years, range 4 to 19) selected based on electromyographic lag time of 0 seconds or less on screening uroflow with Electromyography who subsequently underwent videourodynamics. G...
-
simplifying the diagnosis of 4 common voiding conditions using uroflow Electromyography Electromyography lag time and voiding history
The Journal of Urology, 2011Co-Authors: Jason P Van Batavia, Andrew J Combs, Grace Hyun, Agnes Bayer, Daisy Medinakreppein, Richard N Schlussel, Kenneth I GlassbergAbstract:Purpose: Noninvasive uroflowmetry with simultaneous Electromyography is useful to triage cases of lower urinary tract symptoms into 4 urodynamically defined conditions, especially when incorporating short and long Electromyography lag times in the analysis. We determined the prevalence of these 4 conditions at a single referral institution and the usefulness of uroflowmetry with simultaneous Electromyography and Electromyography lag time to confirm the diagnosis, guide treatment and monitor response.Materials and Methods: We retrospectively reviewed the records of 100 consecutive normal children who presented with persistent lower urinary tract symptoms, underwent uroflowmetry with Electromyography as part of the initial evaluation and were diagnosed with 1 of 4 conditions based on certain uroflowmetry/Electromyography features. The conditions included 1) dysfunctional voiding—active pelvic floor Electromyography during voiding with or without staccato flow, 2a) idiopathic detrusor overactivity disorder-A...
Gregory W Randolph - One of the best experts on this subject based on the ideXlab platform.
-
safety and reliability of a handheld stimulator for neural monitoring during thyroid surgery
Laryngoscope, 2020Co-Authors: Bradley R Lawson, Dipti Kamani, Mohamed Shama, Natalia Kyriazidis, Gregory W RandolphAbstract:OBJECTIVE: The Checkpoint nerve stimulator (Checkpoint Surgical, Cleveland, OH) is a U.S. Food and Drug Administration-approved device for neural localization and monitoring during surgery. Its safety, efficacy, and reliability for neural monitoring during thyroid and parathyroid surgery have not been compared to more standard formats of neural monitoring. STUDY DESIGN: Retrospective review. METHODS: Vagal, recurrent, and superior laryngeal nerve monitoring were performed using both the Checkpoint stimulator and Medtronic NIM 3.0 laryngeal Electromyography endotracheal tube (Medtronic, Jacksonville, FL) during thyroid and parathyroid surgery. A total of 21 operated sides in 15 patients were included for analysis. Latency and amplitude data for the Checkpoint stimulator were recorded using the NIM monitor and compared to normative endotracheal tube surface electrode data. RESULTS: Mean amplitude using the Checkpoint stimulator was 574.6 microvolts (μV), 1060.6 μV, and 182.8 μV for the vagus, recurrent laryngeal, and superior laryngeal nerves, respectively. Mean amplitude using standard laryngeal Electromyography was 709 μV, 1077.0 μV, and 183.7 μV for the same nerves. Mean latency was significantly shorter with stimulation of the recurrent laryngeal nerve compared to the vagus nerve with both stimulators (P < 0.001). No neural injuries occurred during the study. CONCLUSION: The Checkpoint stimulator is a safe and reliable alternative to traditional laryngeal Electromyography providing equivalent induced Electromyography of the vocalis for neural monitoring during thyroid and parathyroid surgery. LEVEL OF EVIDENCE: 4 Laryngoscope, 2019.
-
intraoperative laryngeal Electromyography in children with vocal fold immobility a simplified technique
International Journal of Pediatric Otorhinolaryngology, 2008Co-Authors: Andrew R Scott, Gregory W Randolph, Peter Siao Tick Chong, Christopher J HartnickAbstract:Summary Objectives The primary objective of this study was to determine whether a simplified technique for intraoperative laryngeal Electromyography was feasible using standard nerve integrity monitoring electrodes and audiovisual digital recording equipment. Our secondary objective was to determine if laryngeal Electromyography data provided any additional information that significantly influenced patient management. Methods Between February 2006 and February 2007, 10 children referred to our institution with vocal fold immobility underwent intraoperative laryngeal Electromyography of the thyroarytenoid muscles. A retrospective chart review of these 10 patients was performed after institutional review board approval. Results Standard nerve integrity monitoring electrodes can be used to perform intraoperative laryngeal Electromyography of the thyroarytenoid muscles in children. In 5 of 10 cases reviewed, data from laryngeal Electromyography recordings meaningfully influenced the care of children with vocal fold immobility and affected clinical decision-making, sometimes altering management strategies. In the remaining 5 children, data supported clinical impressions but did not alter treatment plans. Two children with idiopathic bilateral vocal fold paralysis initially presented with a lack of electrical activity on one or both sides but went on to develop motor unit action potentials that preceded recovery of motion in both vocal folds. Conclusions Our findings suggest that standard nerve monitoring equipment can be used to perform intraoperative laryngeal Electromyography and that electromyographic data can assist clinicians in the management of complex patients. Additionally, there may be a role for the use of serial intraoperative measurements in predicting recovery from vocal fold paralysis in the pediatric age group.
Kohei Watanabe - One of the best experts on this subject based on the ideXlab platform.
-
validity of surface Electromyography for vastus intermedius muscle assessed by needle Electromyography
Journal of Neuroscience Methods, 2011Co-Authors: Kohei Watanabe, Hiroshi AkimaAbstract:Abstract Recently, a new recording technique for surface Electromyography (EMG) of the deeper muscle component of the quadriceps femoris muscle group, i.e., vastus intermedius (VI) muscle, from the distal portion of the VI muscle has been developed; however, the effect of electrode location on EMG signal of the VI muscle remains unclear. The aim of this study is to compare neuromuscular activation detected at the middle and distal portions of the VI muscle, in order to clarify whether the surface EMG of the VI muscle can be used to assess the neuromuscular activation of the entire muscle. Six healthy men participated in this study. During incremental ramp contraction of isometric knee extension (∼30% of maximal voluntary contraction), needle EMG was recorded from the middle and distal regions of the VI muscle and surface EMG was performed at the distal region of the VI muscle. Excellent correlation was observed between needle EMG at the middle and distal regions (r = 0.897–0.984, p
-
validity of surface Electromyography for vastus intermedius muscle assessed by needle Electromyography
Journal of Neuroscience Methods, 2011Co-Authors: Kohei Watanabe, Hiroshi AkimaAbstract:Recently, a new recording technique for surface Electromyography (EMG) of the deeper muscle component of the quadriceps femoris muscle group, i.e., vastus intermedius (VI) muscle, from the distal portion of the VI muscle has been developed; however, the effect of electrode location on EMG signal of the VI muscle remains unclear. The aim of this study is to compare neuromuscular activation detected at the middle and distal portions of the VI muscle, in order to clarify whether the surface EMG of the VI muscle can be used to assess the neuromuscular activation of the entire muscle. Six healthy men participated in this study. During incremental ramp contraction of isometric knee extension (~30% of maximal voluntary contraction), needle EMG was recorded from the middle and distal regions of the VI muscle and surface EMG was performed at the distal region of the VI muscle. Excellent correlation was observed between needle EMG at the middle and distal regions (r=0.897-0.984, p<0.001). No significant difference was observed between correlation coefficient of surface EMG detected at the distal versus needle EMG detected at the middle and that of surface EMG detected at distal versus needle EMG detected at distal (p<0.05). These results suggest that surface EMG at the distal portion of the VI muscle, which is the only region available for surface EMG, can be used to evaluate global neuromuscular activation of the VI muscle during isometric contraction at a low force level.
Ettore Mearini - One of the best experts on this subject based on the ideXlab platform.
-
biofeedback successfully cures detrusor sphincter dyssynergia in pediatric patients
The Journal of Urology, 2000Co-Authors: Massimo Porena, Elisabetta Costantini, W. Rociola, Ettore MeariniAbstract:Purpose: We assessed the efficacy of voiding and bladder biofeedback for achieving perineal synergy and curing symptoms in children with detrusor-sphincter dyssynergiaMaterials and Methods: A total of 16 boys and 27 girls 4 to 14 years old with detrusor-sphincter dyssynergia diagnosed by uroflowmetry and Electromyography underwent biweekly voiding biofeedback therapy consisting of perineal floor Electromyography during uroflowmetry. The 6 patients with enuresis and an unstable bladder also underwent bladder biofeedback training during cystometry. Biofeedback continued until detrusor-sphincter dyssynergia resolved. Followup consisted of Electromyography and uroflowmetry 1 month after completing biofeedback training, and telephone interviews after 2 and 4 years.Results: Biofeedback resolved detrusor-sphincter dyssynergia in all children, although the condition disappeared significantly sooner in girls (p <0.02). Secondary enuresis disappeared significantly earlier than primary enuresis (p <0.0001). The 2-ye...
