Keywords
Abstract
The present study aimed to identify the main bacterial agents involved in cases of bacterial cystitis in dogs and also to evaluate the profile of sensitivity and antimicrobial resistance. A retrospective survey was carried out based on the reports of the culture and antibiogram exams of dogs with cystitis treated at the Veterinary Hospital Roque Quagliato between March 2016 and September 2019. Altogether in this period, 90 urine samples were submitted for culture of dogs with clinical signs compatible with cystitis, with 53 showing bacterial growth. All selected samples were collected by cystocentesis, after due local antisepsis and using sterile needles and syringes. Subsequently, microorganisms were isolated in specific solid media and identified by biochemical tests using commercial reagents. Escherichia coli was the most frequently isolated agent (19/53; 35.85%) in dogs with bacterial cystitis. Overall, considering gram-negative and gram-positive bacilli, the most frequent antimicrobials with a sensitivity profile were amikacin, amoxicillin + clavulanic acid, ciprofloxacin, chloramphenicol, gentamicin, levofloxacin, nitrofurantoin and norfloxacin. Regarding the resistance profile, the antimicrobials amoxicillin, azithromycin, cephalothin, clindamycin, oxacillin and sulfa + trimetropim showed a resistance profile more frequently. The isolated bacteria showed different sensitivities to the tested antibiotics, emphasizing the importance of performing the isolation and the antimicrobial sensitivity test, since some of the animals evaluated had previously been treated with recurrent infections, which makes resistance more common in these animals cases.