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Journal of the Korean Academy of Rehabilitation Medicine 2000;24(4):710-717.
Quantitative Measurement of Current Perception Threshold in Carpal Tunnel Syndrome.
Kang, Yoon Kyoo , Seo, Kwan Sik , Park, Eun Mi , Lee, Chang Hyung
Department of Rehabilitation Medicine, College of Medicine, Korea University.
수근관 증후군 환자에서 감각역치의 정량적 측정
강윤규, 서관식, 박은미, 이창형
고려대학교 의과대학 재활의학교실
Abstract

Objective
To compare current perception threshold with nerve conduction study, we measured current perception threshold (CPT) in healthy control and patients with carpal tunnel syndrome (CTS).


Method
Twenty control subjects and twenty patients with CTS were included. Latency and amplitude of median and ulnar motor and sensory nerves were measured. The sensory current perception threshold was measured at the distal interphalangeal joint of third and fifth fingers and the palm with electrical current of 5 Hz, 250 Hz, and 2,000 Hz in frequency. We compared the results of the nerve conduction study with the data of the CPT.


Results
We found that measuring of the sensory threshold might detect carpal tunnel syndrome, especially with 2,000 Hz and 250 Hz stimulation and that CPT data correlated to sensory latency and amplitude of the median nerve.


Conclusion
The sensory threshold test might be useful for diagnosis and follow up test in carpal tunnel syndrome.

Key Words: Carpal tunnel syndrome, Sensory, Current perception, Threshold, Nerve conduction


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