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Identification and antibiotic susceptibility of bacterial isolates from dogs with otitis externa in A ustralia
Author(s) -
Bugden DL
Publication year - 2012
Publication title -
australian veterinary journal
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.382
H-Index - 59
eISSN - 1751-0813
pISSN - 0005-0423
DOI - 10.1111/avj.12007
Subject(s) - otitis , antibiotics , microbiology and biotechnology , polymyxin b , gentamicin , polymyxin , staphylococcus pseudintermedius , antibiotic resistance , microbiological culture , biology , medicine , staphylococcus , bacteria , staphylococcus aureus , surgery , genetics
Objective To identify and quantify the five most frequently isolated significant bacterial microorganisms, and their antibiotic susceptibility, from bacterial cultures of samples taken from the ears of dogs with otitis externa. Methods Bacterial culture and susceptibility testing data for ear swabs from dogs with presumed otitis externa were collated and evaluated. Results The five most frequently isolated microorganisms were: P seudomonas aeruginosa , S taphylococcus pseudintermedius , P roteus sp., beta‐haemolytic streptococci and E scherichia coli . Susceptibility to gentamicin was very high for most isolates, whereas for polymyxin B , high levels of resistance were seen. Beta‐haemolytic streptococci had high levels of resistance to all of the antibiotics tested. Conclusions This study provides veterinarians with Australian data to assist in cytological interpretation and initial empirical therapy of canine otitis externa.