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. 2012 Jul;33(5):810-5.
doi: 10.1097/MAO.0b013e318248eac4.

Superior canal dehiscence size: multivariate assessment of clinical impact

Wade W Chien  1 , Kristen Janky, Lloyd B Minor, John P Carey
Affiliations

Superior canal dehiscence size: multivariate assessment of clinical impact

Wade W Chien et al. Otol Neurotol. 2012 Jul.

Abstract

Objective: To examine the association between dehiscence length in patients with superior semicircular canal dehiscence syndrome and their clinical findings, including objective audiometric and vestibular testing results.

Study design: Retrospective study.

Setting: Tertiary referral center.

Patients: Patients included in this study were diagnosed with superior semicircular canal dehiscence syndrome and underwent surgical repair of the dehiscence through middle fossa craniotomy. The dehiscence length was measured intraoperatively in all cases.

Main outcome measures: Correlation between dehiscence length with pure-tone average (PTA), average bone-conduction threshold, maximal air-bone gap, cervical vestibular evoked myogenic potential thresholds, and presenting signs and symptoms.

Results: The correlation between dehiscence length and maximal air-bone gap was statistically significant on both univariate and multivariate regression analyses. The correlations between dehiscence length and PTA, average bone-conduction threshold, cervical vestibular evoked myogenic potential threshold, and presenting signs and symptoms were not statistically significant.

Conclusion: The dehiscence length correlated positively with the maximal air-bone gap in patients with superior semicircular canal dehiscence. The correlation was statistically significant. The dehiscence length did not correlate with the other variables examined in this study.

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Conflict of interest statement

Disclosures: All authors have no conflict of interest to disclose

Figures

FIG. 1
FIG. 1
Simple linear regression of SCD length and pure-tone average (PTA). The linear regression line shows a positive correlation between SCD length and PTA (slope=1.17). The Pearson’s correlation coefficient is not statistically significant (p = .15).
FIG. 2
FIG. 2
Simple linear regression of SCD length and average bone-conduction thresholds. The linear regression line shows a slightly positive correlation between SCD length and average bone-conduction thresholds (slope = 0.29). The Pearson’s correlation coefficient is not statistically significant (p = .67).
FIG. 3
FIG. 3
Simple linear regression of SCD length and maximal air-bone gap. The linear regression line shows a positive correlation between SCD length and maximal air-bone gap (slope = 2.14). The Pearson’s correlation coefficient is statistically significant (p = .046).
FIG. 4
FIG. 4
Simple linear regression of SCD length and cVEMP threshold. The linear regression line shows a negative correlation between SCD length and cVEMP threshold (slope = −1.11). The Pearson’s correlation coefficient is not statistically significant (p = .26).
See this image and copyright information in PMC

References

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    1. Minor LB. Superior canal dehiscence syndrome. Am J Otol. 2000;21:9–19. - PubMed
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    1. Minor LB, Cremer PD, Carey JP, et al. Symptoms and signs in superior canal dehiscence syndrome. Ann N Y Acad Sci. 2001;942:259–73. - PubMed
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