38444

Enlarged vestibular aqueduct in children with non -syndromic sensorineural hearing loss as diagnosed by computed tomography

Thesis

Last updated: 06 Feb 2023

Subjects

-

Tags

Audiology

Advisors

El-Khusht, Mussttafa, El-Menawi, Muhammad S., Kamel, Ayman E.

Authors

Felfela, Ghada Muhammad

Accessioned

2017-04-26 12:27:40

Available

2017-04-26 12:27:40

type

M.Sc. Thesis

Abstract

Objective: estimation of enlarged vestibular aqueduct (EVA) percent in children with non-syndromic sensorineural hearing loss (SNHL) & trying to correlate its size with the degree of hearing loss. Methods: Non contrast CT scan of petrous bone in both axial & coronal planes was done to 16 patients. Vestibular aqueducts (VAs) were measured at 2 points (midpoint & operculum) on both right & left sides. Pure tone audiometry, speech audiometry and immittancemetry assessments were also done to the study group. Results: the study group was further subdivided according to vestibular aqueduct size into 3 groups: group A (EVA), group B (borderline EVA) & group C (normal VA). There were no statistically significant differences between the 3 groups as regard laterality, degree of hearing loss, PTA configuration and word discrimination score (WDS%). Pearson correlation coefficient was done between VA midpoint & operculum with different variables (age, pure tone thresholds at main six frequencies & WDS %) showing no significant correlation. However, it showed significant correlation between vestibular aqueduct midpoint & operculum with each other. Conclusion: EVA is not related to the level of hearing loss or configuration. Inspite of insignificant findings high frequency hearing loss is the most common configuration seen in EVAS.

Issued

1 Jan 2009

DOI

http://dx.doi.org/10.21473/iknito-space/32388

Details

Type

Thesis

Created At

28 Jan 2023