Bilateral Congenital Deafness in a White Bull Terrier; Brainstem Auditory Evoked Response Findings

  • Kang, Byeong-Teck (Department of Veterinary Internal Medicine, College of Veterinary Medicine, Konkuk University) ;
  • Lee, So-Young (Department of Veterinary Internal Medicine, College of Veterinary Medicine, Konkuk University) ;
  • Jung, Dong-In (Department of Veterinary Internal Medicine, College of Veterinary Medicine, Gyeongsang National University) ;
  • Kim, Hyung-Joong (College of Electronics and Information, Kyunghee University) ;
  • Woo, Eung-Je (College of Electronics and Information, Kyunghee University) ;
  • Park, Hee-Myung (Department of Veterinary Internal Medicine, College of Veterinary Medicine, Konkuk University)
  • Published : 2008.12.31

Abstract

A 2-month-old, intact female white Bull Terrier presented because of suspected deafness. The coat color was predominantly white and the iris color, of both eyes, was brown. The dog did not respond to the owner's voice when the sound stimuli were presented outside of the visual field; however, the dog responded to visual gestures. The other physical, neurological, otoscopic, radiographic, and blood examinations were unremarkable. To assess the apparent deafness, brainstem auditory evoked responses (BAER) were recorded and analyzed in the dog with suspected deafness as well as a normal littermate. The response in the normal littermate consisted of a series of five wave peaks (I-V) with decreased amplitude and prolonged latency as the stimulus intensity decreased. The BAER from the dog suspected of deafness appeared as a flat line and did not reveal identifiable peaks that corresponded to those found in the normal littermate. Thus, congenital, sensorineural and bilateral deafness was confirmed by the BAER.

Keywords

References

  1. Ahlstrom LA, Wilson WJ, Mills PC. Unilateral deafness in a white Bull Terrier diagnosed by BAER assessment. Aust Vet J 2005; 83: 742-743 https://doi.org/10.1111/j.1751-0813.2005.tb11583.x
  2. Goncalves R, Freeman J, Penderis J. The use of contralateral masking noise in the detection of unilateral deafness in Dalmatian puppies. J Vet Intern Med 2008; 22: 234-237 https://doi.org/10.1111/j.1939-1676.2007.0003.x
  3. Harland MM, Stewart AJ, Marshall AE, Belknap EB. Diagnosis of deafness in a horse by brainstem auditory evoked potential. Can Vet J 2006; 47: 151-154
  4. Platt S, Freeman J, di Stefani A, Wieczorek L, Henley W. Prevalence of unilateral and bilateral deafness in border collies and association with phenotype. J Vet Intern Med 2006; 20: 1355-1362 https://doi.org/10.1892/0891-6640(2006)20[1355:POUABD]2.0.CO;2
  5. Sims MH, Shull-Selcer E. Electrodiagnostic evaluation of deafness in two English setter littermates. J Am Vet Med Assoc 1985; 187: 398-404
  6. Steinberg SA, Klein E, Killens RL, Uhde TW. Inherited deafness among nervous pointer dogs. J Hered 1994; 85: 56-59
  7. Strain GM. Congenital deafness and its recognition. Vet Clin N Am Small Anim Pract 1999; 29: 895-907 https://doi.org/10.1016/S0195-5616(99)50079-X
  8. Strain GM. Deafness prevalence and pigmentation and gender associations in dog breeds at risk. Vet J 2004; 167: 23-32 https://doi.org/10.1016/S1090-0233(03)00104-7
  9. Strain GM, Kearney MT, Gignac IJ, Levesque DC, Nelson HJ, Tedford BL, Remsen LG. Brainstem auditory-evoked potential assessment of congenital deafness in Dalmatians: associations with phenotypic markers. J Vet Intern Med 1992; 6: 175-182 https://doi.org/10.1111/j.1939-1676.1992.tb00333.x
  10. Strain GM, Tedford BL, Jackson RM. Postnatal development of the brain stem auditory-evoked potential in dogs. Am J Vet Res 1991; 52: 410-415
  11. Wood JL, Lakhani KH, Henley WE. An epidemiological approach to prevention and control of three common heritable diseases in canine pedigree breeds in the United Kingdom. Vet J 2004; 168: 14-27 https://doi.org/10.1016/S1090-0233(03)00209-0
  12. Yoon YS, Yeon SC, Kweon OK, Nam TC. Brain-stem auditory evoked responses as a diagnostic tool for deafness in dogs. J Vet Clin 1998; 15: 410-416