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무증상 수근관증후군 환자에서 시행한 잔여잠시와 말단잠시지수 검사의 유용성

Other Titles
 Residual Latency and Terminal Latency Index in Diabetic Patients with Asymptomatic Electrophysiologic Carpal Tunnel Syndrome 
Authors
 김우경  ;  윤성희  ;  신준현  ;  이주헌  ;  송홍기  ;  최영철 
Citation
 Journal of the Korean Association of EMG-Electrodiagnostic Medicine (대한근전도 전기진단의학회지), Vol.7(2) : 90-94, 2006 
Journal Title
 Journal of the Korean Association of EMG-Electrodiagnostic Medicine (대한근전도 전기진단의학회지) 
ISSN
 1229-6066 
Issue Date
2006
Keywords
Carpal tunnel syndrome ; Residual latency ; Terminal latency index ; Diabetes mellitus
Abstract
Objectives: Carpal tunnel syndrome (CTS) in diabetic patients is frequently asymptomatic and its relationship to polyneuropathy is not clear. This study aimed to determine whether the presence of asymptomatic electrophysiologic CTS is associated with an increased risk of polyneuropathy in diabetic patients using residual latency (RL) and terminal latency index (TLI). Methods: We included 12 diabetic patients with asymptomatic electrophysiologic CTS. Control values were obtained from 21 healthy subjects. For comparison, we had recruited 41 diabetic patients with polyneuropathy (PN) and 50 patients with CTS without diabetes. The RL is a subtraction of the calculated latency from the measured latency and was determined following the formula RL = terminal latency (ms) - [terminal distance (mm) ÷ proximal conduction velocity (m/s)]. The TLI was used to compare the wrist-to-thenar muscle with the elbow-to-wrist segment conduction velocity. We used the formula TLI = terminal distance (mm)/ [proximal velocity (m/s) x terminal latency (ms)]. Statistical analysis was performed by SPSS version 10.0. Results: There was no significant difference for RL among normal controls, patients with asymptomatic electrophysiologic CTS, and CTS patients without diabetes except median nerve. Diabetic patients with polyneuropathy showed significant increase in RL and TLI compared to normal controls. Conclusion: The ulnar, peroneal, and tibial nerve RL values were not different in diabetic patients with asymptomatic electrophysiologic CTS compared to normal controls. These findings suggest asymptomatic electrophysiologic CTS in diabetic patients is related with focal entrapment rather than an early polyneuropathy. We found the RL was more concordant with nerve conduction than TLI.
Files in This Item:
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Appears in Collections:
1. College of Medicine (의과대학) > Dept. of Neurology (신경과학교실) > 1. Journal Papers
Yonsei Authors
Choi, Young Chul(최영철) ORCID logo https://orcid.org/0000-0001-5525-6861
URI
https://ir.ymlib.yonsei.ac.kr/handle/22282913/110215
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