Otitis Externa : An Essential Guide to Diagnosis and Treatment book cover
1st Edition

Otitis Externa
An Essential Guide to Diagnosis and Treatment

ISBN 9781482224573
Published May 19, 2014 by CRC Press
168 Pages

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Book Description

The investigation and management of ear disease occupies a significant portion of a veterinary clinician’s time. Otitis externa, in particular, is likely to be seen by a busy small animal clinician at least once a day. Otitis Externa: An Essential Guide to Diagnosis and Treatment provides a comprehensive source of information on the relevant structure, function, medical treatment, and surgery of the ear, from Otodectes cynotis to Pseudomonas aeruginosa. The book details the salient points of diagnosis and treatment and includes more than 200 colour illustrations.

Topics include:

  • The anatomic relationship of the components of the external, middle, and inner ear and normal ear function
  • Diagnosis of otitis externa, including history, examination, biopsy, and imagin
  • The aetiology and pathogenesis of otitis externa
  • Proper ear cleaning and assessing the integrity of the tympanum, the discharge, and the canal
  • Medical management of ear disease and primary and secondary causes
  • Clinical signs, diagnosis, and management of otitis media
  • Ototoxicity and other side effects of otic medication
  • Aural ablation and bulla osteotomy

Chronic, and chronic recurrent, otitis externa is frustrating and costly to the owner and often painful for the animal. Concise and user-friendly, this text helps clinicians identify signs of this condition, make an appropriate diagnosis, and plan the best treatment options.

Table of Contents

The Normal Ear
External auditory meatus
Middle ear
Microscopic structure of the external ear canal
Microclimate of the external ear canal
Cerumen in normal and otitic ears
Approach to the Diagnosis of Otitis Externa
Physical examination
Otic examination
Otoscopic appearance of the external ear canal and tympanum
Cytological characteristics of normal and abnormal ears
Aetiology and Pathogenesis of Otitis Externa
Concept of primary and secondary factors, predisposing factors, and perpetuating change
Primary causes of otitis externa
Secondary causes of otitis externa
Perpetuating factors
Ear Cleaning
Assessing the integrity of the tympanum
Assessing the discharge
Assessing the canal
Cleaning process
Home cleaning
Medical Management of Ear Disease
Dealing with primary triggers
Dealing with secondary causes
Chronic or recurrent otitis externa in dogs
Otitis Media
Clinical signs
Major differential diagnoses
Treatment of nasopharyngeal polyps in cats
Ototoxicity and Other Side-Effects of Otic Medication
Meatal and tympanic inflammation
Effects within the middle ear
Systemic effects of otic medication
Ototoxicity of systemic drugs
Aural Ablation and Bulla Osteotomy
Presurgical investigations
Vertical canal ablation
Bulla osteotomy
Special problems relating to surgery of the middle ear in cats

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Richard G. Harvey, BVSc DVD, Dip.ECVD, FSB, PhD, MRCVS
The Veterinary Centre, Cheylesmore, Coventry, UK

Sue Paterson, MA, VetMB, DVD, DipECVD, MRCVS, RCVS and European Specialist in Veterinary Dermatology
Rutland House Referral Hospital, St Helens, Merseyside, UK


"As ear disease is so frequently a cause of suffering in our pets and also a cause of great frustration for both clients and vets, this book should be in every practice library. Its compact size means it will hopefully be regularly used in the consulting room and the lab."
—D. G. Bentley in Veterinary Record

"All topics are dealt with comprehensively and should help the clinician a great deal in dealing appropriately with all aspects of otitis externa… All in all, a nice addition to a practitioner’s library!"
Inge Geens, DVM, CertSAD, MRCVS, Veterinary Surgeon, Laurels Veterinary Centre, UK

"Overall, this is a good reference to have on your shelf."
—Sandra R. Merchant, DVM, DACVD, Louisiana State University, in Vet Med Today