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HOME > J Yeungnam Med Sci > Volume 24(2 Suppl); 2007 > Article
Original Article Relationship between Clinical Grading of Carpal Tunnel Syndrome and Electrophysiological Parameter
Hyun Chul Do1, Jun Lee2, Se Jin Lee2, Mee Young Park2, Jung Sang Hah2
Journal of Yeungnam Medical Science 2007;24(2 Suppl):S407-415
DOI: https://doi.org/10.12701/yujm.2007.24.2S.S407
Published online: December 31, 2007
1Hyun Chul Do Neurological Clinics, Daegu, Korea
2Department of Neurology, College of Medicine, Yeungnam University, Daegu, Korea
Corresponding author:  Jung Sang Hah, Tel: (053) 620-3680, Fax: (053) 627-1688, 
Email: jshah@med.yu.ac.kr
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Background
:To investigate the relationship between clinical grading and electrophysiological parameter in carpal tunnel syndrome. Materials and Methods:This studies examined 75 outpatients (100 hands) who were diagnosed as carpal tunnel syndrome at neurologic clinic from March to July in 2006. They were divided into three groups by clinical grading and then each groups were compared with sensory nerve conduction velocity (SNCV) and sensory compound nerve action potential (CNAP) amplitude of I-W, F-W, and P-W segments, motor terminal latency (TL), motor compound muscle action potential (CMAP) amplitude of distal segment, and disto-proximal ratio on the third finger.
Results
:The first group(mild) was 46 (51 hands) patients, second group(moderate) was 29 (35 hands) patients, and the third group (severe) was 14(14 hands) patients. The mean ages were 55.9, 57.4 and 57.0 years in each group, and there were no statistical differences in age and sex between 3 groups. SNCV of I-W, F-W and P-W segments and motor TL were different significantly between 3 groups, but disto-proximal ratio on the third finger was not different significantly(P<0.05). Motor TL was correlated with clinical grading. And also sensory CNAP amplitude of I-W, F-W, and P-W segments, and motor CMAP amplitude of distal segment were different significantly between 3 groups. Especially, sensory CNAP amplitude of P-W segment and motor TL were correlated with higher clinical grading groups(2, 3 groups)(p<0.05).
Conclusion
:SNCV of F-W and P-W segments, motor TL, motor CMAP amplitude of distal segment and sensory CNAP amplitude of each segments were correlated with the clinical grading of carpal tunnel syndrome.

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