Peer-reviewed veterinary case report
Bacterial causes and antibiotic resistance in cat urinary infections
By Dorsch, Roswitha et al.·Published in The Veterinary record·2015·Clinic of Small Animal Medicine, Germany·View original on PubMed →
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Original publication title: Feline urinary tract pathogens: prevalence of bacterial species and antimicrobial resistance over a 10-year period.
- Species:
- cat
Plain-English summary
A study looked at urinary tract infections (UTIs) in cats over ten years, finding that the most common bacteria causing these infections was E. coli, followed by other types like Streptococcus and Staphylococcus. Female cats were generally older than male cats when diagnosed with UTIs. The researchers discovered that certain antibiotics, like nitrofurantoin and amoxicillin-clavulanic acid, were more effective against these bacteria. This information can help veterinarians choose the best treatments for cats with UTIs and address antibiotic resistance issues.
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Abstract
The purpose of this retrospective study was to identify bacterial species in cats with bacterial urinary tract infections (UTIs) and to investigate their antimicrobial susceptibilities over a 10-year period. Three hundred and thirty cultures from 280 cats were included in the study. The mean age of affected cats was 9.9 years; female cats with bacterial UTIs were significantly older than male cats with UTIs. The most common pathogen identified was Escherichia coli (42.3 per cent), followed by Streptococcus species (19.3 per cent), Staphylococcus species (15.6 per cent), Enterococcus species (6.6 per cent) and Micrococcaceae (5.8 per cent). Forty specimens (12.1 per cent) yielded growth of more than one isolate. Streptococcus and Enterococcus isolates were resistant to a significantly higher number of antimicrobial agents than E coli and Staphylococcus species isolates. Applying the formula to select rational antimicrobial therapy, bacterial isolates were most likely to be susceptible to nitrofurantoin, amoxicillin clavulanic acid, enrofloxacin and gentamicin. The antimicrobial impact factor for nitrofurantoin increased significantly over the 10-year period, whereas there was no significant change in antimicrobial impact factors for doxycycline, trimethoprim-sulfamethoxazole, gentamicin, enrofloxacin, cephalothin and amoxicillin clavulanic acid. The detected changes in in vitro antimicrobial efficacy could help to develop hospital-specific guidelines for antimicrobial use to prevent the further development of resistance in feline uropathogens.
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Search related cases →Original publication on PubMed: https://pubmed.ncbi.nlm.nih.gov/25351232/