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- Title
Clinical Techniques: When and how to do a myringotomy – a practical guide.
- Authors
Cole, Lynette; Nuttall, Tim
- Abstract
Otitis media is common and potentially underdiagnosed.1 Infectious otitis media occurs in 50-82% of dogs with chronic recurrent otitis externa, particularly where there is horizontal ear canal stenosis and/or infection with Gram-negative bacteria.2,3 While the majority of these cases were a progression of an otitis externa through a perforated tympanic membrane (TM), several dogs had an intact tympanum that was thought to have healed over an active otitis media.3 A sterile form, primary secretory otitis media (PSOM) or otitis media with effusion (OME), was recognized in cavalier King Charles spaniels (CKCS) initially, although it can affect any brachycephalic breed. It is used to confirm the presence of fluid and/or debris in the middle ear, remove exudates from the middle ear cavity, obtain samples for cytological evaluation and microbial culture, drain the middle ear and to instill topical otic therapy into the middle ear cavity. The middle ear then is gently flushed repeatedly with approximately 1 mL of saline using the catheter or feeding tube (cut to the appropriate length of 30 cm; the angle of the cut should be 90° and sharp edges should be smoothed to avoid trauma to the ear canal epidermis and middle ear mucosa) attached to a 10 or 12 cc/mL syringe or an external suction and irrigation device. This should be made in the caudoventral quadrant of the pars tensa of the TM, keeping the position of the catheter or feeding tube on the ventral floor of the ear canal to avoid damage to the middle ear structures (Figure 8).
- Subjects
MYRINGOTOMY; EAR ossicles; MAGNETIC resonance imaging; EXTERNAL ear; EAR canal; MIDDLE ear; TYMPANIC membrane
- Publication
Veterinary Dermatology, 2021, Vol 32, Issue 3, p302
- ISSN
0959-4493
- Publication type
Article
- DOI
10.1111/vde.12966