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KMID : 1094020180350030103
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Journal of Veterinary Clinics
2018 Volume.35 No. 3 p.103 ~ p.106
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Unilateral Deafness Diagnosed using the Brainstem Auditory Evoked Response Test in a Shih-tzu Dog
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Ji Na-Ni
Song Joong-Hyun
Hwang Tae-Sung
Lee Hee-Chun
Yu Do-Hyeon
Kang Byeong-Teck
Jung Dong-In
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Abstract
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A 12-year-old castrated male Shih Tzu presented with suspected hearing loss. The patient had no historyof head trauma or exposure to ototoxic drugs. The results of neurologic and physical examinations were normal. Anotoscopic examination showed that both the tympanic membranes and the external ear canals had a normal appearance. However, the results of brainstem auditory evoked response tests confirmed sensorineural deafness in the right earand indicated conduction disturbances and brainstem abnormalities in the left ear. Magnetic resonance imaging wasperformed to confirm the causes of the conduction disturbances and brainstem abnormalities. Inflammatory changesin the left middle ear were highly suspected to be responsible for the findings in the left ear. The results of theseexaminations confirmed complete hearing loss in the right ear and indicated otitis media in the left ear, which couldhave been the cause of the conduction disturbances.
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KEYWORD
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brainstem auditory evoked response (BAER), deafness, otitis media, dog
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