Toronto's Hospital for Sick Children study of traumatic sudden sensorineural hearing loss

J Otolaryngol. 1998 Apr;27(2):64-8.


Objective: Traumatic sudden sensorineural hearing loss (SHL) is by definition a hearing loss of greater or equal to 30 dB occurring within 3 days of trauma. The objective of this study was to assess the rate of traumatic sudden SHL. Etiology is discussed with statistical references, and appropriate treatment is proposed. A case study of an enlarged vestibular aqueduct illustrates the above.

Method: The authors retrospectively studied cases at The Hospital for Sick Children, Toronto, between the years 1980 and 1995. High-resolution CT scans of the temporal bones with bone algorithms and coronal/axial views were performed on all children presenting with SHL after 1988.

Results: Of the 12 children studied, 9 had high-resolution CT scans, revealing a 33% incidence each of inner-ear malformations, temporal bone fractures, and other miscellaneous CT findings.

Conclusion: By corollary, the authors recommend a high index of suspicion for congenital temporal bone abnormalities in all cases of sudden sensorineural hearing loss, particularly those associated with trauma.

Publication types

  • Case Reports

MeSH terms

  • Adolescent
  • Algorithms
  • Child
  • Child, Preschool
  • Craniocerebral Trauma / complications*
  • Decision Trees
  • Ear, Inner / abnormalities*
  • Ear, Inner / diagnostic imaging*
  • Female
  • Hearing Loss, Sensorineural / diagnostic imaging*
  • Hearing Loss, Sensorineural / etiology*
  • Hearing Loss, Sensorineural / surgery
  • Hospitals, Pediatric
  • Humans
  • Incidence
  • Male
  • Ontario
  • Retrospective Studies
  • Tomography, X-Ray Computed