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Ann Clin Neurophysiol > Volume 12(1); 2010 > Article
Ann Clin Neurophysiol. 2010; 12(1): 21-26.
Quantitative Sensory Test: Normal Range in Korean Adults and Application to Diabetic Polyneuropathy
Su-Hyun Kim, Sung-Min Kim, Suk-Won Ahn, Yoon-Ho Hong, Kyung Seok Park, Jung-Joon Sung, and Kwang-Woo Lee
Copyright © 2010 The Korean Society of Clinical Neurophysiology
This is an Open Access article distributed under the terms of the Creative Commons Attribution Non-Commercial License (http://creativecommons.org/licenses/by-nc/4.0) which permits unrestricted non-commercial use, distribution, and reproduction in any medium, provided the original work is properly cited.
ABSTRACT
Background: Although quantitative sensory test (QST) is being used with increasing frequency for measuring sensorythresholds 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 19patients with diabetic polyneuropathy aged from 21 to 79 years. The data were used to define age-matched upper and lowernormal 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 sensitivityof QST was not higher than NCS in patients with diabetic polyneuropathy (36.8% vs. 42.1%, p=0.716), especially amongelderly patients.
Conclusions: QST might be used as a complementary test for NCS in the diagnosis of diabeticpolyneuropathy. Although the QST is a simple method for the evaluation of peripheral nerve function, there are somelimitations. Most of all, because the QST measuring is dependent on the subjective response of patients, the degree of concentrationand cooperation of the patients can significantly affect the result. And thus, attention should be paid during theinterpretation of QST results in patients with peripheral neuropathy.
Key words: Quantitative sensory test, Vibration sensation, Thermal sensation, Diabetic polyneuropathy
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