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1 "Jin Wook Kang"
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Original Article
Pseudo-Spontaneous Nystagmus and Head-Shaking Nystagmus in Horizontal Canal Benign Paroxysmal Positional Vertigo
Yong Gook Shin, Ja Won Gu, Jin Wook Kang, Mee Hyun Song, Dae Bo Shim
Res Vestib Sci. 2017;16(4):129-134.   Published online December 15, 2017
DOI: https://doi.org/10.21790/rvs.2017.16.4.129
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AbstractAbstract PDF
Objectives
The purpose of this study was to examine the clinical manifestations and significance of pseudo-spontaneous nystagmus (PSN) and head-shaking nystagmus (HSN) in horizontal canal benign paroxysmal positional vertigo (HC-BPPV). Methods: Two hundred fifty-two patients diagnosed as HC-BPPV were reviewed retrospectively. After excluding 55 patients with ipsilateral vestibular diseases, multiple canal BPPV, or those who were lost to follow-up, we analyzed the direction of PSN and HSN in patients with HC-BPPV. We also compared the clinical characteristics and treatment outcome between PSN-positive and PSN-negative groups. Results: Our study included 197 patients composed of 80 patients with geotropic HC-BPPV and 117 patients with apogeotropic HC-BPPV. PSN was observed in 13.7% patients and HSN was observed in 45.2%. The incidence of HSN was higher in apogeotropic HC-BPPV, while the proportion of PSN was not statistically significant between the two subtypes. There was no directional preponderance in geotropic HC-BPPV, while ipsilesional PSN and contralesional HSN showed higher incidence in apogeotropic HC-BPPV. The dizziness handicap inventory score in the PSN-positive group was higher than that in the PSN-negative group (p<0.001), and the duration of symptom onset in the PSN-positive group was shorter than that in the PSN-negative group (p=0.047). However, there was no significant difference in the treatment outcome between the two groups. Conclusions: The incidence of HSN was higher than that of PSN in patients with apogeotropic HC-BPPV. Patients with HC-BPPV showing PSN demonstrated more severe initial symptoms and visited the hospital in a shorter period of time after the onset of symptoms.

Citations

Citations to this article as recorded by  
  • Benign Paroxysmal Positional Vertigo: Diagnostic Criteria and Updated Practice Guideline in Diagnosis
    Dae Bo Shim
    Research in Vestibular Science.2020; 19(4): 111.     CrossRef

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