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内外侧跖神经感觉传导 顺向与逆向测定法的比较 |
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郭铁成 岳 翔
摘要 下肢末端感觉神经传导测定在周围神经病变的早期诊断中具有重要意义。其测定方法有顺向和逆向法两种。应用这两种方法分别对14例健康受试者内、外侧跖神经的感觉传导进行测定并对测量结果进行比较。结果表明:顺逆向法所测得的内外侧跖神经的感觉传导速度分别为41.2±2.4和40.7±2.6,44.3±4.7和43.4±3.8m/s,统计学分析显示其差异无显著性意义(P>0.05)。表明两种方法均能可靠地应用于临床,但逆向法测得的SNAP的波幅较高,更易于辨认,且测量所需的电刺激量较小,患者痛苦较小,易于耐受。 关键词 感觉神经传导; 内、外侧跖神经; 顺向法; 逆向法
Sensory Nerve Conduction of the Medial and Lateral Plantar Nerves: A comparison of Orthodromic and Antidromic Methods
Guo Tiecheng, Yue Xiang Department of Rehabilitation Medicine, Tongji Hospital, Tongji Medical University, Wuhan 430030
Abstract Distal sensory conduction studies are of very importance in early diagnosis of peripheral neuropathy. Presented in this study was to compare sensory conduction of the medial and lateral plantar nerves as measured orthodromically and antidromically, respectively. Fourteen healthy subjects were recruited for the study and examined bilaterally. The results indicated that there was no significantly statistic difference between the sensory conduction velocities obtained by the two methods. This suggested that both methods can be applied reliably in clinical practice. However, the antidromic method is more comfortable than the orthodromic one and can record a better recognizable sensory nerve action potential. Key words medal and lateral plantar nerves; sensory nerve conduction; orthodromic; antidromic
在周围性神经病中,感觉异常是最早出现的症状,且下肢症状较上肢出现早,肢体远端较近端症状出现早。此时常规的运动神经传导常常揭示不出业已存在的病理变化。因此准确地测量下肢远端的感觉传导对于早期发现周围神经病变具有重要意义。通常下肢感觉传导多测定腓肠神经和腓浅神经,而且测定的是踝关节近端的节段[1]。而对于处于踝关节远端的内、外侧跖神经的感觉传导研究则较少进行,因而常常延误了对早期周围神经病变的诊断。究其原因,可能是由于这些神经的动作电位波幅较小,测量难以进行所致。以往大部分关于这两条神经的感觉传导研究采用的都是顺向测定法[2~4],近来亦有人采用了逆向测定法[1]。本文的目的是对二者进行比较。 1 材料与方法 1.1 受试者 14例健康受试者自愿参与本研究,男9例,女5例,年龄18~36岁,平均27.1岁。既往均无神经系统及下肢与足部伤、病和糖尿病病史,神经系统检查均为正常。 1.2 方法 所有测试均于夏季在空调室中进行。测试所用仪器为丹迪Keypoint肌电图及诱发电位仪。由于受试者均为正常人,且室温恒定,故未测量受试者局部的组织温度。受试者二侧内外侧跖神经均测量,[1] [2] 下一页 上一个医学论文: 脑外伤并失语患者的康复 下一个医学论文: 人体平衡功能定量测评
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