4.4 Article

Effects of Diagnostic Work-Up on Medical Decision-Making for Canine Urinary Tract Infection: An Observational Study in Danish Small Animal Practices

Journal

JOURNAL OF VETERINARY INTERNAL MEDICINE
Volume 32, Issue 2, Pages 743-751

Publisher

WILEY
DOI: 10.1111/jvim.15048

Keywords

Antibiotic prescription; Bacterial culture; Dog; Microscopy; Primary practice; Urinary tract infection

Funding

  1. University of Copenhagen Research Center for Control of Antibiotic Resistance (UC-CARE)
  2. Fondet for sygdomsbekaempelse hos vore familiedyr
  3. Vetfond

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BackgroundClinical signs of urinary tract disease in dogs often lead to prescription of antibiotics. Appropriate diagnostic work-up could optimize treatment and reduce the risk of inappropriate use of antibiotics. Hypothesis/ObjectivesTo describe and evaluate the impact of diagnostic work-up on decision to treat (DTT) and choice of antibiotic treatment (COT) for dogs presenting with clinical signs of urinary tract disease. AnimalsOne hundred and fifty-one dogs presenting to 52 Danish veterinary practices. MethodsProspective, observational study. Clinical signs, diagnostic work-up, and prescriptions were recorded. Urine samples were submitted to a reference laboratory for quantitative bacterial culture (QBC) and susceptibility testing. The laboratory results were used as reference for assessing the appropriateness of DTT and COT. ResultsIn the majority of dogs, veterinarians performed dipstick (99%), microscopic examination of urine (80%) and bacterial culture (56%). Fifty-one percent of dogs had urinary tract infection (UTI) based on reference QBC. Appropriate DTT was made for 62% of the dogs, while 36% were over-prescribed and 2% under-prescribed. Inappropriate use of second-line agents was found in 57% of the UTI cases. Performing microscopybut not culturesignificantly impacted DTT (P=0.039) while no difference was seen in COT (P=0.67). The accuracy of in-house microscopy and culture were 64.5 and 77%, respectively. Conclusions and Clinical Importance: Over-prescription of antibiotics was common among dogs with suspected UTI, regardless of the diagnostic work-up performed. Test inaccuracy under practice conditions and incoherence between diagnostic test results and decision-making both explained inappropriate and unnecessary use of antibiotics.

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