Brainstem Auditory Evoked Response (BAER) in Canine Otitis Externa

2020 ◽  
Author(s):  
V. V. Karnad ◽  
K. Jeyaraja ◽  
M. G. Jayathangaraj ◽  
C. Jayanthy ◽  
K. Bhave ◽  
...  
Keyword(s):  
Hearing Impairment ◽  
Diagnostic Tool ◽  
Otitis Externa ◽  
Amplitude Ratio ◽  
Wave Pattern ◽  
Evoked Response ◽  
Auditory Evoked Response ◽  
Conductive Deafness ◽  
Brainstem Auditory Evoked Response

The objective of this study was to assess the brainstem auditory evoked response (BAER) wave pattern in normal dogs as well as those with otitis externa (OE). The BAER test was performed on twenty five dogs with varying degrees of OE. Our study found that BAER of ears with severe OE had prolonged latencies of all waves and lower wave I to wave V amplitude ratio compared to the mildly affected or normal ears. However the inter – peak latencies were unaffected. Thus BAER can be a useful diagnostic tool to assess the hearing impairment due to conductive deafness in OE.

scholarly journals Evaluation of the occurrence of canine congenital sensorineural deafness in puppies of predisposed dog breeds using the brainstem auditory evoked response

2016 ◽  
Vol 64 (4) ◽  
pp. 425-435 ◽  
Author(s):  
Marta Płonek ◽  
Elżbieta Giza ◽  
Artur Niedźwiedź ◽  
Krzysztof Kubiak ◽  
Józef Nicpoń ◽  
...  
Keyword(s):  
Wave Amplitude ◽  
Amplitude Ratio ◽  
Stria Vascularis ◽  
Sensorineural Deafness ◽  
Organ Of Corti ◽  
Evoked Response ◽  
Auditory Evoked Response ◽  
Dog Breed ◽  
Brainstem Auditory Evoked Response ◽  
Bilateral Deafness

Canine congenital sensorineural deafness (CCSD) affects predisposed breeds of dogs and is primarily caused by an atrophy of the stria vascularis of the organ of Corti. The analysis of the brainstem auditory evoked response (BAER) is a reliable method for the evaluation of hearing in animals as it allows an accurate detection of unilateral or bilateral deafness. The occurrence of unilateral and bilateral deafness using the BAER was determined in a representative group of dogs in Poland, including Bull Terriers (n = 117), Australian Cattle Dogs (n = 62), English Setters (n = 32) and the Dogo Argentino (n = 32). Overall deafness, deafness in each dog breed and an association between deafness and phenotype were studied. Among the 243 dogs tested, 156 (81%) had a normal BAER, 27 (11%) were unilaterally deaf, and 12 (5%) were bilaterally deaf. The amplitudes and latencies of waves I, II, III, V, the V/I wave amplitude ratio, and wave I–V, I–III and III–V inter-peak intervals were recorded for each dog. Unilaterally and bilaterally deaf dogs were present in all the dog breeds studied. There were 17 (14.5%) deaf Bull Terriers, three (4.8%) deaf Australian Cattle Dogs, seven (21.9%) deaf English Setters, and 12 (37.5%) deaf Dogos Argentinos. Preventive BAER screening should be routinely performed in these four breeds to prevent the spread of genes responsible for deafness.

Study of brainstem auditory evoked response and biochemical markers in patients of alcohol use disorder

2021 ◽  
Vol 65 ◽  
pp. 193-200
Author(s):  
Mudassir Anis Siddiqui ◽  
Divya Srivastava ◽  
Sandeep Choudhary
Keyword(s):  
Alcohol Use ◽  
Biochemical Parameters ◽  
Alcoholic Hepatitis ◽  
Alcohol Use Disorder ◽  
Liver Enzymes ◽  
Evoked Response ◽  
Transmission Time ◽  
Control Group ◽  
Auditory Evoked Response ◽  
Brainstem Auditory Evoked Response

Objectives: Data available on brainstem auditory evoked response (BAER) and its correlation with biochemical parameters in patients of alcohol use disorder (AUD) in Indian population is scanty. Therefore, this study was undertaken to focus on the effects of AUD on BAER and liver enzymes. Materials and Methods: This case-control study included 40 males in the study group who had AUD and 40 healthy males in the control group in the age group of 20–60 years. The BAER was performed using octopus NCS/ EMG/EP (Clarity) machine. The levels of aspartate aminotransferase (AST), alanine aminotransferase (ALT), alkaline phosphatase and serum bilirubin were estimated in all the subjects. Results: We observed a highly significant increase in the absolute latencies of waves III and V and interpeak latencies (IPL) I-III and I-V of BAER in the patients of AUD in this study. Significant increase in the liver enzymes and especially AST/ALT ratio of patients of AUD was seen which indicated towards subclinical alcoholic hepatitis. The latencies of waves of EPs (waves III, V, IPL I-III and IPL I-V) were positively correlated with the biochemical parameters and duration of AUD. Conclusion: Our findings indicated that AUD lead to the increase in brainstem transmission time and also lead to subclinical alcoholic hepatitis which is reflected by the increase in the liver enzymes. We concluded that chronic alcohol consumption affected the auditory pathways and delayed the auditory transmission time which was suggestive of possible demyelination of auditory tracts.

Brainstem auditory evoked response in presbyacusis

1991 ◽  
Vol 43 (1) ◽  
pp. 1-4
Author(s):  
Pawn Geol ◽  
Umesh wig ◽  
S. P. S. Yadav ◽  
Harish C. Geol ◽  
A. K. Sood
Keyword(s):  
Evoked Response ◽  
Auditory Evoked Response ◽  
Brainstem Auditory Evoked Response

Brainstem auditory evoked response—A normative study in children

1996 ◽  
Vol 48 (2) ◽  
pp. 144-149
Author(s):  
R. K. Kapoor ◽  
R. Kumar ◽  
R. Shukla ◽  
P. K. Misra ◽  
B. Sharma ◽  
...  
Keyword(s):  
Evoked Response ◽  
Normative Study ◽  
Auditory Evoked Response ◽  
Brainstem Auditory Evoked Response
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