1887

Rigid endoscopy: otoendoscopy

image of Rigid endoscopy: otoendoscopy
GBP
Online Access: GBP25.00 + VAT
BSAVA Library Pass Buy a pass

Abstract

Ear disease is one of the most commonest conditions affecting dogs and cats. Otitis externa (OE) is one of the most common and challenging ear diseases encountered, particularly in the dog. In dogs chronic inflammation of the ear canal is frequently associated with an extension of inflammation to deeper structures of the ear, resulting in otitis media (OM) or, less commonly, otitis interna (OI). Feline OE is less prevalent and rarely progresses to OM. More commonly, feline OM is the consequence of aetiological factors that directly affect the middle ear (e.g. inflammatory polyps, neoplasia, infection from the upper respiratory tract). The first diagnostic procedure that must be performed on a patient with suspected ear disease is an otoscopic examination. This chapter examines Indications; Instrumentation; Patient preparation; Preoperative diagnostic work-up; Procedure; Normal findings; Pathological conditions; Postoperative care; and Complications.

Loading full text...

Full text loading...

/content/chapter/10.22233/9781905319572.chap9

Figures

Image of 9.1
9.1 Veterinary otoscope set consisting of an otoscope for dogs and cats, and a stopcock attachment with integrated working channel. (Courtesy of Karl Storz GmbH & Co. KG, Tuttlingen, Germany)
Image of 9.2
9.2 Vetpump2, a flushing and suction apparatus. (Courtesy of Karl Storz GmbH & Co. KG, Tuttlingen, Germany)
Image of 9.3
9.3 Mild and hard waxy secretions in the ears of dogs with ceruminous OE.
Image of 9.4
9.4 Purulent exudate in an ear of a dog with infection.
Image of 9.5
9.5 Flushing technique using a VO system. Note the polypropylene catheter targeting tenacious debris. The same ear canal after several cycles of flushing and suctioning.
Image of 9.6
9.6 Normal canine ear canal.
Image of 9.7
9.7 Normal canine tympanic membrane. A = Pars flaccida; B = Pars tensa; C = Stria mallearis.
Image of 9.8
9.8 Blood vessels in the pars tensa associated with the manubrium.
Image of 9.9
9.9 Glandular proliferation of the horizontal ear canal of a dog with a history of chronic OE.
Image of 9.10
9.10 Ulceration of the skin of the ear canal associated with infection.
Image of 9.11
9.11 Mass of neoplastic origin discovered using video-otoscopy in the ear canal of a cat. Biopsy of the mass using biopsy forceps (visible at the top of the image) placed through the working channel on the video-otoscope. Histopathologically the mass was identified as ceruminal gland carcinoma.
Image of 9.12
9.12 Inflammatory polyp in a cat. Note the pink to red smooth surface.
Image of 9.13
9.13 A hard concretion at the eardrum of a dog.
Image of 9.14
9.14 OM in a dog. Note the absence of the tympanic membrane.
Image of 9.15
9.15 OM with rupture of the tympanic membrane.
Image of 9.16
9.16 The bulged appearance of a tympanic membrane in a dog with empyema of the bulla.
Image of 9.17
9.17 Proper position for performing a myringotomy, using an open-ended tomcat catheter. The incision is made in the caudoventral portion of the pars tensa (at 6 to 7 o’clock). C = Caudal; D = Dorsal; R = Rostral; V = Ventral.
Image of 9.18
9.18 CT scan of left cholesteatoma in a male 8-year-old Afghan Hound. There is enlargement of the middle ear cavity, complete loss of air contrast and early mild lytic changes to the bulla wall. (Courtesy of M Di Giancamillo) Removal of a huge quantity of keratinic debris from the tympanic cavity of a 10-year-old male Flat-coated Retriever with right cholesteatoma during a total ear canal ablation procedure. (Courtesy of CM Mortellaro)

More like this

/content/chapter/10.22233/9781905319572.chap9
dcterms_title,dcterms_description
-contentType:Journal
5
5
This is a required field
Please enter a valid email address
Approval was a Success
Invalid data
An Error Occurred
Approval was partially successful, following selected items could not be processed due to error