ANTIMICROBIAL SENSITIVITY IN MICROORGANISMS ISOLATED FROM CANINE OTITIS-EXTERNA

It is important to test the antimicrobial sensitivity of the aetiologi cal agents of otitis externa before starting treatment in order to pre vent the development of antibiotic resistance in the microorganisms. I n this study the sensitivity patterns in bacteria and yeasts isolated as aetiological agents from otitis externa were analysed. Antifungal a nd antibacterial activity tests were done using the automated system A TE Fungus and the classic diffusion test respectively. The azole compo unds had the greatest antifungal properties, while p-lactams had the s trongest antibiotic activity. This study reflects the increasing impor tance of sensitivity tests in chronic otitis externa due to the increa sing antimicrobial resistances in bacteria and yeasts. If it is necess ary to initiate an empiric treatment before the results of the antimic robial test, the application of miconazole or econazole for yeasts and oxacillin or amoxicillin-clavulanic acid against bacteria is recommen ded.