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KMID : 0948920090080010007
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Clinical Pain
2009 Volume.8 No. 1 p.7 ~ p.12
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Influence of Aging on Current Perception Thresholds in the Normal Korean Adults
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Choi Eun-Seok
Lee Won-Ihl
Kim Young-Kook
Kim Han-Seung
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Abstract
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Objective : To evaluate the influence of aging on current perception threshold (CPT) and to obtain the reference values of CPT in normal Korean elderly people.
Materials and Methods: Eighty five healthy volunteers with no neurological abnormality were enrolled. Among the subjects, 44 individuals over 65 year-old were regarded as old-age group and the remaining 41 individuals aged between 20 and 39 years were regarded as young-age group. The CPT tests with stimulation frequencies of 2000, 250, and 5 Hz were applied to both median and sural nerves using the Neurometer? (Neurotron, Baltimore, U.S.A.) in both groups. The CPTs of both groups were compared and analyzed using independent t-test.
Results: The mean CPTs of both median and sural nerves were significantly higher in the old-age group than young-age group (p＜0.05). Estimated upper limit values (mean±2 S.D.) of CPT of normal Korean old people over 65 years at each stimulation frequency of 2000, 250, and 5 Hz were 415, 179, 100, respectively in the median nerve, and those for sural nerve were 367, 129, 87, respectively.
Conclusion: The CPT increased with aging. The influence of aging should be considered when interpreting the CPT, especially in the diagnosis of neuropathy in the elderly.
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KEYWORD
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Current perception threshold, Aging, Neurometer
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