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Results for “OTITIS INTERNA”

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At least 19 recordsLinked to original sources
PubMed1988

Surgical management of otitis media and otitis interna.

Surgical management of otitis media and otitis interna includes the following options: lateral bulla osteotomy, ventral bulla osteotomy, or curettage of the tympanic cavity. Because otitis media frequently accompanies chronic nonresponsive otitis externa, one of the above procedures may be combined with operative procedures of the external ear canal. Also, gentle selective curettage of the tympanic cavity may be combined with either lateral or ventral bulla osteotomy in the treatment of otitis media and interna. The choice of surgical procedure(s) should be based on the condition of the external ear canal (vertical and horizontal parts), the duration of clinical signs, response to previous surgery, and the familiarity of the surgeon with the different approaches and techniques. With the increased reporting of long-term results following surgical management of otitis externa, media, and interna, more meaningful conclusions concerning selection of surgical procedure may be made in the future.

Animals↗
PubMed2006

Otitis interna (labyrinthitis) associated with Salmonella enterica arizonae in turkey poults.

Otitis interna was diagnosed in five 9-to-21-day-old turkey poults with clinical signs of paralysis, opisthotonus, torticollis, blindness, and increased mortality. Gross and microscopic lesions in the poults included omphalitis, typhlitis, hepatitis, meningoencephalitis, ophthalmitis, neuritis and ganglionitis of the vestibulocochlear nerve, and otitis interna. Salmonella enterica arizonae was isolated from the brains, eyes, intestines, yolk sacs, and livers of poults. Birds with otitis interna also had meningoencephalitis. It is most likely that the S. enterica arizonae infection spread from the brain to the internal ears through the vestibulocochlear nerve. This is the first documentation of otitis interna caused by bacteria in an avian species.

Animals↗
PubMed2001

Otitis interna is a frequent sequela to Streptococcus suis meningitis in pigs.

Twenty-eight histologically confirmed cases of porcine leptomeningitis were examined retrospectively, with focus on the pathology of the inner and middle ear, brain, and vestibulocochlear nerve. Tissues were evaluated by histology and immunohistochemistry for Streptococcus suis serotype 2 antigen, and the bacteriologic results were recorded. Exudative otitis interna was diagnosed in 20/28 pigs (71%). The lesions primarily affected the perilymphatic ducts, with consistent involvement of the scala tympani. Perineuritis of the vestibulocochlear nerve was seen in all but four of the ears affected with otitis interna. Immunohistochemically, S. suis serotype 2 antigen was demonstrated in the leptomeningeal, perineural, and labyrinthine exudates in 11 cases. Otitis media was diagnosed in 10/28 pigs (34%), but evidence of extension to the inner ear was not observed. The findings were highly similar to descriptions of meningogenic labyrinthitis in humans and in laboratory animal models. Otitis interna in pigs can also develop via the meningogenic route and is not always, as generally stated, tympanogenic.

Animals↗
PubMed1952

[Otitis interna].

Explore the source record for details and available documents.

Labyrinthitis↗
PubMed2002

Otitis interna as a result of Pasteurella multocida infection in a laboratory woodchuck.

A laboratory woodchuck presented clinically with left-sided torticollis and a purulent exudate within the external auditory meatus of the left ear. Bacterial culture of the exudate resulted in a heavy growth of Pasteurella multocida. Treatment was initiated with topical and systemic antimicrobial compounds. There was no clinical improvement after 72 h of treatment, and euthanasia was elected. Radiographs correlated well with necropsy findings, confirming a diagnosis of otitis media; otitis interna was not confirmed but was suggested by the clinical presentation. To the authors knowledge, this is the first description of otitis media/interna as a result of P. multocida infection in a laboratory woodchuck.

Animals↗
PubMed1983

Panophthalmitis and otitis interna in fire-bellied toads.

Microbiologic and histologic studies were made of fire-bellied toads with signs of ocular and central nervous system disease. Providencia alcalifaciens, Citrobacter freundii, Aeromonas hydrophila, and other gram-negative bacilli were isolated from the eyes and multiple tissues of ill toads. The histologic evaluations revealed severe panophthalmitis and otitis interna.

Animals↗
PubMed1992

A pathologic and bacteriologic study on otitis media in swine.

A pathologic and bacteriologic study on otitis media in swine was performed on 237 swine, ranging in age from 1 day to 1 year. These 237 swine from eight selected farms were slaughtered due to unfavorable prognosis associated with clinical signs of illness. One hundred sixty-three (68.8%) of the 237 swine were found to be affected with otitis, though only a few swine showed clinical signs characteristic of the disease. One hundred fifty-one (63.7%), 53 (22.4%), and 39 (16.5%) had lesions in the middle, external, and internal ear, respectively. Of the 151 cases with otitis media, bilateral and unilateral infection accounted for 114 (75.5%) and 37 (24.5%), respectively. Only 5/53 swine with otitis externa and 6/39 swine with otitis interna failed to show otitis media. All swine with infection in the tympanic cavity had inflammatory lesions in the auditory tube. Examination of the swine grouped by age revealed that, regardless of age, incidence of otitis media was 50-70%. In swine younger than 1 month old, otitis media tended to center on the auditory tube, where a mild infiltration of neutrophils into the mucous membrane was frequent. Thereafter, otitis media increased in degree and extent with age. Forty (26.5%) of the 151 swine affected with otitis media were accompanied by a substantial amount of inflammatory exudate in the tympanic cavity and bulla. Purulent exudate was found in 20/40 (50%) swine. Severe otitis media prevailed in swine between 1 and 4 months of age, showing inspissation of a suppurative exudate in the tympanic cavity and lysis of the underlying osseous wall of the tympanic bulla with subsequent fibrosis.(ABSTRACT TRUNCATED AT 250 WORDS)

Actinomyces↗
PubMed1997

Otitis media and interna and temporohyoid osteoarthropathy.

Otitis media/interna in the equine most commonly is a chronic, insidious infection with the unique sequella of temporohyoid osteoarthropathy in some horses. Head shaking may be the only clinical sign of the early stages of this disease. The arthritic condition often leads to fusion of the temporohyoid joint with resultant stress fractures of the petrous temporal bone. When this occurs, the horse presents as an acute neurologic case with clinical signs of vestibular and facial nerve dysfunction. Diagnosis, treatment, and prognosis are discussed. Recognition of this syndrome is important because many of these horses can be treated successfully and can return to normal function.

Animals↗
PubMed1990

Total ear canal ablation combining bulla osteotomy and curettage in dogs with chronic otitis externa and media.

Ear canal ablation combining bulla osteotomy and curettage was performed on 44 dogs (n = 72 ears). Indications for the procedure included one or more of the following: chronic nonresponsive otitis externa and/or media (n = 71), tumor in the horizontal portion of the ear canal (n = 1), failed lateral ear resection (n = 11), ossified auricular cartilages secondary to chronic otitis externa (n = 22), failed previous total ear canal ablation (n = 1), and otitis interna (n = 1). In 40 dogs, the surgery was successful in alleviating all clinical signs of otitis externa and media. During the immediate postoperative period, 2 dogs died of causes unrelated to otitis. Complications related to the surgery developed in 9 of the surviving 42 dogs. Ultimately, 95% (40 of the surviving 42) of the dogs were cured by use of this procedure. Surgery successfully resolved the original problems in 97% (66 of 68) of the surgically treated ears of these dogs.

Animals↗
PubMed1985

Acute meningoencephalomyelitis in a rabbit infected with Pasteurella multocida.

Pasteurella multocida was isolated in pure culture from the optic chiasm of a rabbit that was euthanatized subsequent to acute development of neurological signs. Histopathologically, there was meningoencephalomyelitis, bilateral otitis interna, retrobulbar cellulitis, optic neuritis and iritis. The ocular involvement, severity of the spinal lesions and the lack of otitis media was unusual.

Acute Disease↗