ISSN 2398-2950      

Otitis interna

ffelis

Synonym(s): Inner ear disease, labyrinthitis


Introduction

  • Infection involving the organs of hearing and balance housed within the bony labyrinth.
  • Cause: spread of infection from middle ear or via hematogenous route.
  • Signs: head tilt, circling and nystagmus (vestibular syndrome); unilateral deafness.
  • Diagnosis: history, clinical signs, radiography, neurological assessment.
  • Treatment: broad-spectrum antibiotics.
  • Prognosis: good but high frequency of residual deficits.
    Print off the owner factsheet on Chronic otitis Chronic otitis to give to your client.

Pathogenesis

Etiology

  • Extension of opportunistic infection from otitis media.
  • Hematogenous spread.

Specific

  • Otitis media Otitis media.
  • Bulla irrigation or bulla osteotomy (but only if presence of otitis media).

Pathophysiology

Inner ear disease

  • Infection/trauma/ototoxicity   →   damage to sensory nerve endings within the cochlea, utricle and saccule, or in the ampullae of the semicircular canals   →   deafness and vestibular dysfunction.

Diagnosis

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Treatment

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Prevention

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Outcomes

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Further Reading

Publications

Refereed papers

  • Recent references from PubMed and VetMedResource.
  • Trevor P B & Martin R A (1993) Tympanic bulla osteotomy for treatment of middle-ear disease in cats - 19 cases (1984-1991). JAVMA 202 (1), 123-128 PubMed.
  • Boothe H W Jr. (1988) Surgical management of otitis media and otitis interna. Vet Clin North Am Small Anim Pract 18 (4), 901-911 PubMed.
  • Schunk K L (1988) Disorders of the vestibular system. Vet Clin North Am Small Anim Pract 18 (3), 641-665 PubMed.
  • Shell L G (1988) Otitis media and otitis interna - etiology, diagnosis, and medical management. Vet clin North Am Small Anim Pract 18 (4), 885-899 PubMed.

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