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J Korean Bal Soc > Volume 6(2); 2007 > Article
Journal of the Korean Balance Society 2007;6(2): 202-206.
급성 일측성 말초 전정마비에서 다양한 전정 비대칭성 지수의 비교분석
, , , , , 최호석, 김규성, 김영효, 황인국, 장승연, 이승철
인하대학교 의과대학 이비인후-두경부외과학교실1, 소리 이비인후과2
Comparative Analysis of Vestibular Asymmetry Parameters in Acute Unilateral Peripheral Vestibulopathy
Hoseok Choi, Kyu Sung Kim, Young Hyo Kim, In Kuk Hwang, Seung Yeon Jang, Seung Chul Lee
1Department of Otolaryngology-Head and Neck Surgery, Inha University College of Medicine, Incheon, Korea. stedman@inha.com
2Soree Ear Clinic, Seoul, Korea.
ABSTRACT
Background and Objectives:   There are known parameters that indicate vestibular asymmetry, such as directional preponderance (DP) on caloric test, asymmetry on slow harmonic acceleration (SHA) test, asymmetry of time constant (Tc) and slow cumulative eye position (SCEP) on velocity step test. Aim of this study is investigate the sensitivity and predictability of the vestibular asymmetry parameters among them. Materials &
Method:  
Twenty six patients who were diagnosed as acute unilateral peripheral vestibulopathy were enrolled in this study. We compared each parameter with site of lesion based on the direction of spontaneous nystagmus and canal paresis (CP) which were totally correlated in this group of patients.
Results:  
Positive predictability of each parameter showed 58% in DP, 62% in SHA asymmetry, 62% in SCEP, 38% in Tc. In the cases that each parameter showed positive result, all of DP and SHA asymmetry indicated site of lesion, and showed high correlation coefficient(r=0.89). But in 27% of SCEP and 23% of Tc did not indicate site of lesion.
Conclusion:  
All parameters showed low sensitivity for identifying laterality of lesion even the tests were performed with in one week after vertigo attack. DP and VOR asymmetry showed high positive predictability for indicating lesion site.
Keywords: Vestibular function test; Vestibular neuritis; Vestibulopathy
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