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Research in Vestibular Science > Volume 8(1); 2009 > Article
Research in Vestibular Science 2009;8(1): 37-42.
주관적 시수평과 시수직의 불일치에 대한 임상적 의미
문태현, 배승현, 조일권, 서명환, 이정구, 정재윤
단국대학교 의과대학 이비인후-두경부외과학교실
Clinical Implication of Dissociation between Subjective Visual Horizontal and Subjective Visual Vertical
Tae Hyun Moon, Sung Hyen Bae, Il Kwon Cho, Myung Whan Suh, Chung Ku Rhee, Jae Yun Jung
Department of Otorhinolaryngology-Head & Neck Surgery, Dankook University, College of Medicine, Cheonan, Korea. jjking@dankook.ac.kr
ABSTRACT
Background and Objectives Subject visual vertical (SVV) and subject visual horizontal (SVH) is well known otolith function test. Patients with acute unilateral vestibular weakness fail to set the test bar within normal range in SVH/SVV showing abnormal deviation toward lesion side. In some cases, SVH and SVV are deviated towards different directions, and analysis of these findings is rarely reported. The authors analyzed correlation of SVH/SVV and other vestibular function tests in patients with various vestibular diseases. Materials and Methods From April 2005 to July 2007, total 234 patients who had admitted for dizziness were enrolled. All patients were divided in two groups, non-dissociation group (n=215) and dissociation group (n=19). Correlation of SVH, SVV, Videonystagmography (VNG), the rotating chair test was compared. Results 8.1% of patients showed dissociation between SVH and SVV. Clinical features did not showed significant difference between groups. In non-dissociation group, SVH/SVV showed correlation with VNG, rotating chair test. However in dissociation group, VNG and rotating chair test revealed high rate of consistency with deviation of SVH than that of SVV. Also direction of SVH and dizziness had higher consistency (88.9%) than that of SVV (11.1%). Conclusion The SVH showed consistency with other vestibular function test and may be more reliable than SVV when the result is dissociated. Key Words: Subjective visual vertical; Subjective visual horizontal; Dissociation
Keywords: Subjective visual vertical; Subjective visual horizontal; Dissociation
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