MULTIPLE VARIABLES AS PREDISPOSING FACTORS IN THE INCIDENCE OF CANINE OTITIS EXTERNA

Comunicación Libre

Dermatología

(1) Hospital Ars Veterinaria
(2) Universitat Autònoma de Barcelona
(3) Hospital Veterinari Montjuïc
(4) Centre Veterinari La Creu

Cristina Moya I Andreu (1)

RESUMEN CORTO - SHORT SUMMARY

Canine otitis externa is a disease in which inflammatory changes occur within the ear canal as a response of any injury. Predisposing and perpetuating factors as well as primary and secondary causes need to be classified and considered in order to stablish its treatment and prognosis.

The aim of this study was to determine if some variables such as the season of the year, breed, age, gender, environment and previous pathologies could be predisposing factors when otitis externa occurs. There exist several specific studies about otitis externa in dogs, but none evaluating all the factors at once.

Furthermore, this project wanted to evaluate which were the most common microorganisms cultured and if a correlation with those variables could be made.

Samples were cultured during a yearlong, identified and classified and results were compared to published literature.

Evaluating these variables, it was concluded that age and gender were not variables that could be considered predisposing factors; environment could be a significant factor to be considered; seasonal trend was evident in canine otitis externa presentation, with a peak during the hottest and most humid months of the year; breed and previous pathologies were variables which had a marked effect in otitis incidence so those should be acknowledged in the diagnosis; within the breeds examined, French Bulldogs were the most affected ones and; dermatological pathologies were frequent, especially allergies and that Staphylococcus and Streptococcus genus and Enterobacteriaceae family integrated the most common organisms to isolate in any breed.

BIBLIOGRAFÍA

1. Harvey B, Paterson S: Aetiology and pathogenesis of otitis externa. In Harvey B and Paterson S (1rst ed.): Otitis Externa, London, CRC Press, 2014; 45-73
2. Harvey R, Haar G: Aetiology and pathogenesis of otitis externa. In Harvey R and Haar G (1srt ed.): Ear, nose and throat diseases of the dog and cat, Boca Raton, Florida, Press Taylor & Francis Group, 2017; 131-153 
3. Hayes HM, Pickle LW, Wilson GP: Effects of ear type and weather on the prevalence of canine otitis externa. Research in Veterinary Science 1987; 42: 294–298.
4. Griffin CE, Kwochka KW, MacDonald JM: Canine atopic disease. In Griffin CE (Eds): Current Veterinary Dermatology, St Louis, Mosby, 1993; 99-120.
5. Fraser G: The fungal flora of the canine ear. Journal of Comparative Pathology 1961; 71: 1– 5.