Abstract
Background: Brainstem auditory evoked response has been an underused diagnostic modality in horses as evidenced by few reports on the subject. Hypothesis/Objectives: To describe BAER findings, common clinical signs, and causes of hearing loss in adult horses. Animals: Study group, 76 horses; control group, 8 horses. Methods: Retrospective. BAER records from the Clinical Neurophysiology Laboratory were reviewed from the years of 1982 to 2013. Peak latencies, amplitudes, and interpeak intervals were measured when visible. Horses were grouped under disease categories. Descriptive statistics and a posthoc Bonferroni test were performed. Results: Fifty-seven of 76 horses had BAER deficits. There was no breed or sex predisposition, with the exception of American Paint horses diagnosed with congenital sensorineural deafness. Eighty-six percent (n = 49/57) of the horses were younger than 16 years of age. The most common causes of BAER abnormalities were temporohyoid osteoarthropathy (THO, n = 20/20; abnormalities/total), congenital sensorineural deafness in Paint horses (17/17), multifocal brain disease (13/16), and otitis media/interna (4/4). Auditory loss was bilateral and unilateral in 74% (n = 42/57) and 26% (n = 15/57) of the horses, respectively. The most common causes of bilateral auditory loss were sensorineural deafness, THO, and multifocal brain disease whereas THO and otitis were the most common causes of unilateral deficits. Conclusions and Clinical Importance: Auditory deficits should be investigated in horses with altered behavior, THO, multifocal brain disease, otitis, and in horses with certain coat and eye color patterns. BAER testing is an objective and noninvasive diagnostic modality to assess auditory function in horses.
| Original language | English (US) |
|---|---|
| Pages (from-to) | 1310-1317 |
| Number of pages | 8 |
| Journal | Journal of Veterinary Internal Medicine |
| Volume | 28 |
| Issue number | 4 |
| DOIs | |
| State | Published - 2014 |
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Keywords
- Deafness
- Electrophysiology
- Equine
- Hearing
ASJC Scopus subject areas
- veterinary(all)
Cite this
Brainstem Auditory Evoked Responses in an Equine Patient Population : Part I - Adult Horses. / Aleman, Monica R; Holliday, T. A.; Nieto, Jorge; Williams, D. C.
In: Journal of Veterinary Internal Medicine, Vol. 28, No. 4, 2014, p. 1310-1317.Research output: Contribution to journal › Article
}
TY - JOUR
T1 - Brainstem Auditory Evoked Responses in an Equine Patient Population
T2 - Part I - Adult Horses
AU - Aleman, Monica R
AU - Holliday, T. A.
AU - Nieto, Jorge
AU - Williams, D. C.
PY - 2014
Y1 - 2014
N2 - Background: Brainstem auditory evoked response has been an underused diagnostic modality in horses as evidenced by few reports on the subject. Hypothesis/Objectives: To describe BAER findings, common clinical signs, and causes of hearing loss in adult horses. Animals: Study group, 76 horses; control group, 8 horses. Methods: Retrospective. BAER records from the Clinical Neurophysiology Laboratory were reviewed from the years of 1982 to 2013. Peak latencies, amplitudes, and interpeak intervals were measured when visible. Horses were grouped under disease categories. Descriptive statistics and a posthoc Bonferroni test were performed. Results: Fifty-seven of 76 horses had BAER deficits. There was no breed or sex predisposition, with the exception of American Paint horses diagnosed with congenital sensorineural deafness. Eighty-six percent (n = 49/57) of the horses were younger than 16 years of age. The most common causes of BAER abnormalities were temporohyoid osteoarthropathy (THO, n = 20/20; abnormalities/total), congenital sensorineural deafness in Paint horses (17/17), multifocal brain disease (13/16), and otitis media/interna (4/4). Auditory loss was bilateral and unilateral in 74% (n = 42/57) and 26% (n = 15/57) of the horses, respectively. The most common causes of bilateral auditory loss were sensorineural deafness, THO, and multifocal brain disease whereas THO and otitis were the most common causes of unilateral deficits. Conclusions and Clinical Importance: Auditory deficits should be investigated in horses with altered behavior, THO, multifocal brain disease, otitis, and in horses with certain coat and eye color patterns. BAER testing is an objective and noninvasive diagnostic modality to assess auditory function in horses.
AB - Background: Brainstem auditory evoked response has been an underused diagnostic modality in horses as evidenced by few reports on the subject. Hypothesis/Objectives: To describe BAER findings, common clinical signs, and causes of hearing loss in adult horses. Animals: Study group, 76 horses; control group, 8 horses. Methods: Retrospective. BAER records from the Clinical Neurophysiology Laboratory were reviewed from the years of 1982 to 2013. Peak latencies, amplitudes, and interpeak intervals were measured when visible. Horses were grouped under disease categories. Descriptive statistics and a posthoc Bonferroni test were performed. Results: Fifty-seven of 76 horses had BAER deficits. There was no breed or sex predisposition, with the exception of American Paint horses diagnosed with congenital sensorineural deafness. Eighty-six percent (n = 49/57) of the horses were younger than 16 years of age. The most common causes of BAER abnormalities were temporohyoid osteoarthropathy (THO, n = 20/20; abnormalities/total), congenital sensorineural deafness in Paint horses (17/17), multifocal brain disease (13/16), and otitis media/interna (4/4). Auditory loss was bilateral and unilateral in 74% (n = 42/57) and 26% (n = 15/57) of the horses, respectively. The most common causes of bilateral auditory loss were sensorineural deafness, THO, and multifocal brain disease whereas THO and otitis were the most common causes of unilateral deficits. Conclusions and Clinical Importance: Auditory deficits should be investigated in horses with altered behavior, THO, multifocal brain disease, otitis, and in horses with certain coat and eye color patterns. BAER testing is an objective and noninvasive diagnostic modality to assess auditory function in horses.
KW - Deafness
KW - Electrophysiology
KW - Equine
KW - Hearing
UR - http://www.scopus.com/inward/record.url?scp=84904347043&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=84904347043&partnerID=8YFLogxK
U2 - 10.1111/jvim.12379
DO - 10.1111/jvim.12379
M3 - Article
C2 - 24902479
AN - SCOPUS:84904347043
VL - 28
SP - 1310
EP - 1317
JO - Journal of Veterinary Internal Medicine
JF - Journal of Veterinary Internal Medicine
SN - 0891-6640
IS - 4
ER -