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Research in Vestibular Science > Volume 14(4); 2015 > Article
Research in Vestibular Science 2015;14(4): 117-122.
지속되는 향지성 수평반고리관 양성 돌발성 두위현훈의 임상적 특성
고경민, 송미현, 박진우, 이준희, 신용국, 심대보
서남대학교 의과대학 명지병원 이비인후과
Clinical Characteristics of Horizontal Canal Benign Paroxysmal Positional Vertigo with Persistent Geotropic Direction Changing Positional Nystagmus
Kyung Min Ko, Mee Hyun Song, Jin Woo Park, Joon Hee Lee, Yong Gook Shin, Dae Bo Shim
Department of Otorhinolaryngology, Myongji Hospital, Seonam University College of Medicine, Goyang, Korea. lovend77@gmail.com
ABSTRACT
Objective:   The purpose of this study was to identify the clinical characteristics of horizontal canal benign paroxysmal positional vertigo (h-BPPV) with persistent geotropic direction changing positional nystagmus (DCPN).
Method:   One hundred thirty two patients diagnosed as the geotropic subtype of h-BPPV were analyzed retrospectively. Patients were classified into two groups: persistent h-BPPV (ph-BPPV) group which means h-BPPV showing persistent (>1 minute) geotropic DCPN and short duration h-BPPV (sh-BPPV) group that means h-BPPV with short duration (≤1 minute) geotropic DCPN. We compared the clinical characteristics and treatment outcomes between the two groups.
Results:   The study included 34 patients with ph-BPPV and 98 patients with sh-BPPV. There were no differences between the two groups in age, distribution of sex and the affected side. The ph-BPPV group had higher secondary BPPV preponderance and dizziness handicap index (DHI) score compared to the sh-BPPV group. The ph-BPPV group required higher number of canalith repositioning procedures (CRPs) until resolution and higher multiple/single CRP ratio than the sh-BPPV group. In addition, the ph-BPPV group showed longer duration until the remission of subjective symptoms (vertigo, dizziness) compared to the sh-BPPV group.
Conclusion:   ph-BPPV was more frequently associated with secondary causes of BPPV and demonstrated higher DHI score, total number of CRP, and longer remission duration of subjective symptoms compared to sh-BPPV. This information may be helpful for clinicians in counseling and managing the patients with persistent geotropic DCPN h-BPPV.
Keywords: Benign paroxysmal positional vertigo; Direction-changing positional nystagmus; Geotropic nystagmus
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