tailieunhanh - Báo cáo hóa học: " Assessing motor deficits in compressive neuropathy using quantitative electromyography"

Tuyển tập báo cáo các nghiên cứu khoa học quốc tế ngành hóa học dành cho các bạn yêu hóa học tham khảo đề tài: Assessing motor deficits in compressive neuropathy using quantitative electromyography | Nashed et al. Journal of NeuroEngineering and Rehabilitation 2010 7 39 http content 7 1 39 IHli JOURNAL OF NEUROENGINEERING NCR AND REHABILITATION RESEARCH Open Access Assessing motor deficits in compressive neuropathy using quantitative electromyography 1 1 231 Joseph Nashed Andrew Hamilton-Wright Daniel W Stashuk Matthew Faris Linda McLean Abstract Background Studying the changes that occur in motor unit potential trains MUPTs may provide insight into the extent of motor unit loss and neural re-organization resulting from nerve compression injury. The purpose of this study was to determine the feasibility of using decomposition-based quantitative electromyography DQEMG to study the pathophysiological changes associated with compression neuropathy. Methods The model used to examine compression neuropathy was carpal tunnel syndrome CTS due to its high prevalence and ease of diagnosis. Surface and concentric needle electromyography data were acquired simultaneously from the abductor pollicis brevis muscle in six individuals with severe CTS eight individuals with mild CTS and nine healthy control subjects. DQEMG was used to detect intramuscular MUPTs during constantintensity contractions and to estimate parameters associated with the surface- and needle-detected motor unit potentials SMUPs and MUPs respectively . MUP morphology and stability SMUP morphology and motor unit number estimates MUNEs were compared among the groups using Kruskal-Wallis tests. Results The severe CTS group had larger amplitude and longer duration MUPs and smaller MUNEs than the mild CTS and control groups suggesting that the individuals with severe CTS had motor unit loss with subsequent collateral reinnervation and that DQEMG using a constant-intensity protocol was sensitive to these changes. SMUP morphology and MUP complexity and stability did not significantly differ among the groups. Conclusions These results provide evidence that MUP amplitude parameters and MUNEs