Enlarged Vestibular Aqueduct in Congenital Non-Syndromic Sensorineural Hearing Loss in Egypt

详细信息    查看全文

• 作者：Maha Abou-Elew (1)
  Mostafa El-Khousht (1)
  Mohamed Sherif El-Minawi (1)
  Mona Selim (1)
  Ayman Ismail Kamel (2)
  
• 关键词：Enlarged vestibular aqueduct syndrome (EVAS) ; Non ; syndromic sensorineural hearing loss (SNHL) in children ; Vestibular aqueduct midpoint (Mp) and operculum (Op)
• 刊名：Indian Journal of Otolaryngology and Head & Neck Surgery
• 出版年：2014
• 出版时间：January 2014
• 年：2014
• 卷：66
• 期：1-supp
• 页码：88-94
• 全文大小：415 KB
• 作者单位：Maha Abou-Elew (1)
  Mostafa El-Khousht (1)
  Mohamed Sherif El-Minawi (1)
  Mona Selim (1)
  Ayman Ismail Kamel (2)
  
  1. Audio-Vestibular Unit of ENT Department, Kasr Al-Aini El-Manial University Hospital, Cairo University, Cairo, 11562, Egypt
  2. Radiodiagnosis Department, Cairo University, Cairo, Egypt
  
• ISSN：0973-7707

文摘

To estimate the frequency of isolated enlarged vestibular aqueduct (EVA) in patients with non-syndromic sensorineural hearing loss (SNHL) in an Egyptian population sample and to correlate its size with the degree of hearing loss. The study group comprised 16 patients (32 ears) suffering from non-syndromic SNHL since childhood. After a complete basic audiological evaluation, all patients were submitted to non contrast CT scan of the petrous bone in both axial & coronal planes. Vestibular aqueduct (VA) was measured at two points (midpoint & operculum) on right & left sides. The study group was divided according to VA size into three groups: group A, B and C. Group A included 6 ears (4 patients) with EVA, group B included 11 ears (7 patients) with borderline EVA and group C included 15 ears (9 patients) with normal VA size. There were no statistically significant differences between the three groups as regards laterality, degree of hearing loss and audiometric configuration. There was no correlation between VA midpoint & operculum and different variables (age and average pure tone thresholds). However, a significant correlation between VA midpoint & operculum was found. EVA was diagnosed in 6 out of 32 ears (18.75%) in the study sample. EVA size was not related to the degree of hearing loss or configuration. Despite the insignificant findings, moderate and high frequency sloping SNHL were considered the most common findings seen in patients with EVA.