Antimicrobial susceptibility patterns from urinary isolates obtained from cats (2013‐2020)

Abstract

Abstract Background Bacterial urinary tract infections have been associated with comorbidities and increased antimicrobial resistance over time. Objective To identify bacterial species, antimicrobial susceptibility patterns and risk factors associated with antimicrobial resistance. Animals Three hundred sixty‐three positive urine cultures from 308 cats. Methods Bacterial species and antimicrobial susceptibility data from positive aerobic bacterial urine cultures from cats with growth of ≥103 colony forming units per milliliter (cfu/ml) were included. Medical records were reviewed, and bacteriuria was classified as sporadic bacterial cystitis, recurrent bacterial cystitis or subclinical bacteriuria (SBU). Multivariable logistic regression analysis was used to evaluate antimicrobial resistance risk factors. Results A total of 444 bacterial isolates from 363 bacteriuric episodes were identified. Escherichia coli (52%) and SBU (59%) were the most common organism and classification, respectively. When compared to other classifications of bacteriuria, Enterococcus spp. were more likely to be isolated from SBU episodes (P 90% susceptible designation to all bacteria isolated highlighting the importance of performing urine culture and susceptibility testing, particularly for cats with recurrent bacterial cystitis.

Keywords

• kidney
• multidrug resistance
• pyelonephritis
• renal
• subclinical bacteriuria
• urinary tract