摘要
目的比较多系统萎缩（MSA）患者尿道括约肌肌电图（US—EMG）和肛门括约肌肌电图（EAS—EMG）变化特征。方法对拟诊的9例MSA患者行US—EMG和EAS-EMG测定。分别测定运动单位的平均时限、平均波幅、轻收缩波幅、多相波以及大力收缩募集电位共5组数据，并统计分析组间差异。结果9例MSA患者US—EMG与EAS-EMG两种检查方法均证实7例患者肌电图结果呈神经源性损伤，两种检查结果中平均波幅[（1063．44±499．92）μV与（634．89±265．07）μV]、多相波[中位数（四分位数间距），分别为0（0，20％）与57％（28％，63％）]差异有统计学意义（t=2．567，P=0．033；t=2．833，P=0．012）。结论US—EMG和EAS—EMG在MSA诊断中均具有较特异的诊断价值，虽然US—EMG检查实施有一定技巧性和难度，但其轻收缩波幅等指标的异常对于仅有排尿障碍而无便秘的MSA可能具有更为显著的诊断价值。
Objective To assess the significance of urethral sphincter electromyography （US- EMG） and external anal sphincter electromyography （EAS-EMG） for the diagnosis of multiple system atrophy （MSA）. Methods US-EMG and EAS-EMG were performed in 9 patients who were diagnosed as MSA. Duration, motor unit action potentials amplitude, polyphasicity, as well as recruited pattern and amplitude during powerful contraction were recorded and analyzed. Results Among 9 patients who were diagnosed as MSA, 7 cases showed neural injury by both US-EMG and EAS-EMG. There was significant difference of eleetromyographie findings between US-EMG group and EAS-EMG group （average volatility （μV） ： 1063.44 ±499.92 vs 634. 89 ±265.07; polyphasie wave： 0（0,20% ） vs 57% （28% ,63% ） ; t = 2.567,P=0.033;t =2.833,P=0.012）. Conclusions Although US-EMG may be difficult to perform, US-EMG may have the same specificity as EAS-EMG for the diagnosis of MSA, especially for the diagnosis of MSA patients only with urination disorders, who are involved in Onuf neelear according to some of the abnormal indexes.
出处
《中华神经科杂志》
CAS
CSCD
北大核心
2012年第3期188-191,共4页
Chinese Journal of Neurology
基金
海军总医院创新培育基金资助项目（CX201002）
关键词
多系统萎缩
尿道
肛管
肌电描记术
Multiple system atrophy
Urethra
Anal canal
Electromyography
