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Quantitative Sensory Test: Normal Range in Korean Adults and Application to Diabetic Polyneuropathy  

Kim, Su-Hyun (Department of Neurology, Seoul National University College of Medicine)
Kim, Sung-Min (Department of Neurology, Seoul National University College of Medicine)
Ahn, Suk-Won (Department of Neurology, Seoul National University College of Medicine)
Hong, Yoon-Ho (Department of Neurology, Seoul Boramae Hospital)
Park, Kyung-Seok (Department of Neurology, Seoul National University College of Medicine)
Sung, Jung-Joon (Department of Neurology, Seoul National University College of Medicine)
Lee, Kwang-Woo (Department of Neurology, Seoul National University College of Medicine)
Publication Information
Annals of Clinical Neurophysiology / v.12, no.1, 2010 , pp. 21-26 More about this Journal
Abstract
Background: Although quantitative sensory test (QST) is being used with increasing frequency for measuring sensory thresholds in clinical practice and epidemiologic studies, there has been no age-matched normative data in Korean adults. The objective of this study is to evaluate the value of QST in diabetic polyneuropathy with normal range in Korean adults. Methods: The Computer Aided Sensory Examination IV 4,2 (WR Medical Electronics Co., Stillwater, Minnesota, U.S.A.), with 4,2,1 stepping algorithm was used to determine vibration and cold perception threshold in 70 normal controls and 19 patients with diabetic polyneuropathy aged from 21 to 79 years. The data were used to define age-matched upper and lower normal limits and normal range of side to side difference. We also evaluated the duration of diabetes, serum HbA1C level, and findings of nerve conduction study (NCS) and QST in patients with diabetic polyneuropathy. Results: In normal adults, sensory thresholds slightly increased with age, and a slight side-to-side difference was observed. The diagnostic sensitivity of QST was not higher than NCS in patients with diabetic polyneuropathy (36.8% vs. 42.1%, p=0.716), especially among elderly patients. Conclusions: QST might be used as a complementary test for NCS in the diagnosis of diabetic polyneuropathy. Although the QST is a simple method for the evaluation of peripheral nerve function, there are some limitations. Most of all, because the QST measuring is dependent on the subjective response of patients, the degree of concentration and cooperation of the patients can significantly affect the result. And thus, attention should be paid during the interpretation of QST results in patients with peripheral neuropathy.
Keywords
Quantitative sensory test; Vibration sensation; Thermal sensation; Diabetic polyneuropathy;
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