Subclinical bacteriuria and surgical-site infection in 140 dogs with orthopedic and neurological conditions.

Objectives: This study aimed to determine the prevalence, risk factors, and types of bacterial isolates associated with subclinical bacteriuria (SBU) in dogs with reduced mobility; and to explore the influence of SBU on surgical-site infection (SSI) in dogs treated surgically for their conditions.

Animals: We studied 140 client-owned dogs.

Procedure: Medical records of dogs with orthopedic and neurological conditions from 3 academic referral hospitals were reviewed. Dogs receiving antimicrobials or showing lower urinary tract signs were excluded. Using generalized linear models, clinical, procedural, and postoperative variables were evaluated as possible risk factors for SBU and SSI.

Results: The prevalence of SBU and the rate of SSI were 8.5% (12/140) and 10.4% (10/96), respectively. Urine culture was completed in 6 of 12 dogs with SBU, and 3 results were positive (Escherichia coli in 2 dogs and Staphylococcus spp. in 1 dog). Four of the 10 dogs that developed SSI received postoperative antimicrobial therapy. The prevalence of SBU and types of bacterial isolates were similar to those in previous reports. Significant risk factors for developing SBU and its association with SSI were not identified.

Conclusion and clinical relevance: Screening and treating for SBU preoperatively remains controversial.