Evaluation of otoacoustic emissions in clinically normal alert puppies

Abstract

Hearing screening in alert puppies can be accomplished reliably and rapidly with otoacoustic emissions testing. Results supported the possibility of the use of DPOAE measurement in hearing screening of dogs.

Clinical evaluation of cochlear hearing status in dogs using evoked otoacoustic emissions

“…OAE testing may prove to be a useful alternative test for canine hearing screening – particularly as a first‐pass screening test for use in private practice. The ability to successfully record both TEOAEs and DPOAEs has been previously reported in very small numbers of normally hearing dogs within a quiet, controlled laboratory environment (Sims and others 1994, Rogers and others 1995, Sockalingam and others 1998), and more recently DPOAEs have been successfully recorded in normal hearing puppies (Schemera and others 2011). However, OAE testing is very susceptible to excessive environmental noise and the efficacy of OAEs as a test for deafness has not been assessed within a veterinary clinical setting with relatively high environmental noise levels and neither has it been assessed in deaf dogs.…”

Hearing disorders in cats: Classification, pathology and diagnosis

“…dPoAEs are increasingly being used in the veterinary setting, especially when it is desired to know what audible frequencies may be affected. 103,123,124 An alternate test is the transient evoked oAE (TEoAE), where a transient evoked response to a series of wideband clicks or chirps is recorded. dPoAEs evaluate a wider frequency range (above 10 kHz) than do TEoAEs, and might be preferred in species like the cat (or dog) with a higher frequency hearing range, albeit offer less sensitivity to minor and subclinical conditions.…”

Detection of Deafness in Puppies Using a Hand-Held Otoacoustic Emission Screener

“…Although researchers have recently studied the feasibility of using evoked OAEs to identify hearing impairment in puppies, OAEs are still currently underutilized in veterinary medicine. 5,[7][8][9][10] The two most common evoked OAEs are transient-evoked OAEs (TEOAEs) and distortion product OAEs (DPOAEs). 7 Distortion product OAEs were also found to be easy to measure, repeatable, and consistent with BAER findings in the same ears of clinically normal puppies.…”

“…7 Distortion product OAEs were also found to be easy to measure, repeatable, and consistent with BAER findings in the same ears of clinically normal puppies. 7,8 Distortion product OAEs are recorded in response to the presentation of two simultaneous pure-tone stimuli, designated as L1 and L2. The stimulus levels presented to the ear are typically below 70-75 dB SPL so as not to create technical distortion or stimulate the inner hair cells.…”