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Gotthelf Louis N.. Small Animal Ear Diseases: An Illustrated Guide. 2nd ed. — Saunders,2004. — 384 p.. 2004

Since the introduction of the first edition of Small Animal Ear Diseases: An Illustrated Guide, the awareness of otic disease as a serious ailment has been brought to the forefront of veterinary medicine. Veterinarians worldwide have embraced the use of video otoscopic diagnostics for ear disease, and we are now more often identifying treatable ear disease as a result. For example, recognizing otitis media in our patients and properly treating it has helped to relieve the misery and suffering that accompanies this painful disease.

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Acknowledgments

Structure of the External Ear

Pinna, or Auricle

Structure of the Ear Canal

Examination of the External Ear Canal

Louis N. Gotthelf, DVM

One of the most common ailments of dogs seen in a veterinary practice is ear disease.

Assessing the Ear Canals

Assessing the Eardrum

Cytological Evaluation

Cytology and Histopatnology of the Ear in Health and Disease

John C. Angus, DVM

Normal Cytology

Abnormal Cytology

Chronic Inflammatory Otitis

4 Diagnostic Imaging of the Ear

Mauricio Solano, MV, DACVR

Selecting the appropriateimaging method, correctly applying the technique selected, and accurately interpreting the examination are the key steps in imaging ear disorders in dogs and cats.

Conventional Radiography

VD and DV Projections

Open-Mouth View

Abnormal Radiographic Findings

Computed Tomography (CT)

Magnetic Resonance Imaging (MRI)

Technique and Normal Findings

Abnormal Findings

Primary Causes of Ear Disease

Louis N. Gotthelf, DVM

By definition, otitis externa represents a spectrum of inflammatory changes that occur to the external acoustic canal in response to any insult to the ear canal epithelium.

Atopic Dermatitis

Demodectic Mange

Foreign Material

Adverse Food Reactions (AFR)

Paul Bloom, DVM, DACVD, DAB VP (Canine an d Fel ine Specialty)

Immunopathogenesis in Humans

Signalment and History

Physical Findings

BOX 6-2 Guidelines for Determination of Specific Food Allergies

Factors that Predispose the Ear to Otitis Externa

Louis N. Gotthelf, DVM

Careful examination of a clean, dry ear canal in a dog or cat with otitis externa may reveal many conditions that affect the ear canal.

Stenotic Ear Canals

Vertical Ear Canal

Horizontal Ear Canal

Hair in Ear Canals

Excessive Cerumen Production

Neoplasia of the Ear Canals

Gross Examination

Perpetuating Factors and Treatment of Otitis Externa

Louis N. Gotthelf, DVM

Otitis externa is a common malady, occurring in 15% to 20% of dogs and 5% to 7% of cats seen in veterinary practice.

Cytologic Evaluation

Flushing of the Ear Canal

Examining the Ear Canal

Perpetuating Factors

Microbiology of the Ear o f the Dog an d Cat

Sandra R. Merchant, DVM

1O Ceruminous Diseases of the Ea

Norma White-Weithers, MS, DV

Histopatholog y of the External Ear Canal

Etiolog y of Ceruminous Otitis

Disorders of Keratinization

Nutritional Deficiency

Allergic Dermatitis

Parasitic Dermatosis

Tumors of the Ear Canal

Environmental and Conformational Causes of Ceruminous Otitis

11 Failure of Epithelial Migration: Cerumino liths

Louis N. Gotthelf, DVM

The ear canal requires a clearance mechanism to remove the accumulation of dead cells, trapped foreign debris, and wax.

Epithelial Migration

Failure of Epithelial Migration

12 Diseases that Affect th e Pinna

Genevieve Marignac, DVM

Most skin diseases may affect the pinna in dogs and cats, but other parts of the body can also be involved.

Pruritic Dermatoses

Sarcoptic Mange

Notoedric Mange

Louse Infestations

Insect Bite Dermatitis

Atopic Dermatitis

Contact Dermatitis

Cutaneous Adverse Drug Reaction

Dermatoses of the Ear Margin

Crusty and Scaly Dermatoses

Dermatoses of the Concave Pinna

Symmetrical Pinnal Alopecia

Nodules and Plaques

13 Simple Diagnosis and Treatment of Pruritic Otitis

Steven A. Mel man, VMD

Most cases of acute otitis externa are pruritic.

Clinical Treatment Trial for Pruritus

Analyzing the Results of the Trial

14 Diagnosis and Treatment of Otitis Media

Louis N. Gotthelf, DVM

Otitis media is a common disease process that often goes unrecognized in most veterinary practices.

Signalment and History

Evaluation of the Patient

Imaging of the Tympanic Bulla

Is the Eardrum Ruptured?

Primary Otitis Media in Cats

Secondary Otitis Media in Dogs

Pathogenesis of Secondary Otitis Media

Microbiology of Otitis Media

Treatment of Otitis Media

Sample Collection

Flushing and Suctioning the Bulla

Topical Ototoxicity

Safe Drugs for the Tympanic Bulla

Bulla Infusion and Topical Therapy

The Use of Corticosteroids in Otitis Media

Systemic Antimicrobials

15 Healing of the Rupture Eardru

Louis N. Gotthelf, DV

Veterinarians are often faced with the problem of ruptured eardrums.

Causes of Rupture

Healing Process

Otitis Media Prevents Healing

16 Inflammatory Polyps

Louis N. Gotthelf, DVM

Signalment and History

17 Ototoxicity

Louis N. Gotthelf, DVM

In human medicine, certain systemic drugs used to treat diseases can have profound negative effects on hearing and balance.

Experimental Studies

Dilutional Factors

Duration of Therapy

Delayed Ototoxicity

18 Otitis Interna and Vestibul ar Disease

Todd W. Axlund, DVM, Dipl ACVIM

Otitis interna, or infection of the inner ear, is a relatively common disorder in the dog.

Components of the Vestibulocochlear System

Diagnostic Tests

19 Laser Ear Surgery

Jeffrey R. Moll, DVM Peter H. Eeg, B.Sc, DVM Noel Berger, DVM, MS

Common ear ailments of dogs and cats can be seen in up to 50% of patients in areas of humid climates during some or all of the patient’s life.

A Comparison of CO2 and Diode Laser Energy

Specific Laser Therapy Goals

Neoplasia of the Pinna

Ceruminous Gland Hyperplasia

Laser Polypectomy (Aural Tumor Removal)

Lateral Ear Canal Resection and Ear Canal Ablation

Cosmetic and Therapeutic Otoplasty

20 Marketing Ear Service

Ronald E. Whitford, DVM

The veterinary profession is undergoing major changes in the demographics of delivery of some services and products.

What Is Marketing, Anyway?

Specific Strategies for Successfully Marketing Preventive and Therapeutic Ear Care

Appendix Ear Product Formulary

Ear Products Listed by Trade Names

More medical literature on Medic.Studio

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