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KMID : 0948320070070020074
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Konyang Medical Journal
2007 Volume.7 No. 2 p.74 ~ p.78
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Comparison of Olfactory Functions between 18-hour Fasting and 2-hour after Refeeding
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Kim Min-Wook
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Abstract
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Background: There is neither objective tests nor eletrophysiological methods that evaluate the olfactory function. So the standardization of the factors which may affect the olfactory function test is even more important for valuable
results to obtain. The effect of fasting or satiety on olfactory perception is controversial. The aim of this study is to
determine the effects of a 18-hour fasting or satiety on olfactory function test.
Method: Three olfactory function tests (random control test, 18-hour fasting test, postprandal 2-hour test) was done with concurrent measurement of blood glucose level. Two acoustic rhinometry tests (18-hour fasting test, postprandal 2-hour test) was done to evaluate the physiologic changes of nasal cavity. Olfactory function is evaluated with
KVSS (Korean Version of Sniffin’ Sticks Test) which comprises the identification test, the threshold test, and the discrimination test. TDI (threshold-discrimination-identification) score is calculated by summation of the results of the
above three tests.
Results: A significant difference was found between fasting and postprandal results of the discrimination test, TDI
scores, blood glucose level, and acoustic rhinometry volume. But there were no significant correlation neither between
discrimination (or TDI) and glucose level nor between discrimination (or TDI) and acoustic rhinometry volume.
Conclusion: Fasting or satiety can affect the olfactory function test especially the discrimination test. So standardization of the condition is very important for gaining a more reliable test results.
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KEYWORD
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Olfaction, Fasting, Refeeding
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