Chirurgia ucha/Surgery of the ears

Otitis media

A canine bacterial otitis media mostly is the sequel of an otitis externa, less common after trauma or foreign body penetration through the tympanic membrane. An otitis media is treated as an otitis externa with a TECA LBO.

In cats, the situation is different. Most otitis media are caused by polyps invading from the Eustach’ian tube or from the outer ear channel. Polyps are seen with young cats and viral respiratory tract diseases. For a long time, the cats are asymptomatic. Then, a head tilt, Horner’s syndrome or signs of air way obstructions are noticed. Polyps are detected visually or with an otoscope. The bullae are radiographed with an open mouth technique or by two angled sideviews. Affected bullae show reduced amounts of air filling and thickening of the bone.

Polyps can be removed by gentle tracking. However, parts may remain in the ear or bulla and cause remission. Ventral bulla osteotomy is indicated with beginning neurological deficits (Horner’s syndrome). The polyp is removed and the bulla is gently curetted and flushed. A vast opening of the bulla allows granulation tissue to invade and provide fast healing.

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