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Objectives:
Antimicrobial resistant (AMR) surgical site infections (SSIs) pose an increasing risk in companion animal surgery. Only a few studies have examined the clinical outcomes of AMR SSIs in veterinary practice. This study evaluated the differences in morbidity, mortality, and treatment costs between patients with AMR SSI, antimicrobial-sensitive (AMS) SSI, and those without SSI following surgery. Secondary objectives included identifying factors associated with developing multidrug-resistant (MDR) SSIs.
Methods:
We retrospectively reviewed the medical records at the University of Edinburgh Small Animal Hospital from June 2017 to September 2024. Forty-four patients with AMR SSIs and 83 with AMS SSIs were matched with 126 control patients without SSI based on similar signalment, and clinical and surgical parameters. Binary logistic regression was used to assess risk factors associated with MDR SSIs.
Results:
The total treatment costs in patients with AMR SSIs were 165% higher than in the control group and 97% higher than in the AMS SSI group. Patients with AMR SSIs also experienced longer post-operative hospitalisation and required more revision surgeries than those in the AMS SSI and control groups. The three groups had similar survival rates. Compared to the control group, logistic regression detected an association between longer anaesthesia and the development of MDR SSI (OR 1.88; 95% CI, 1.19–2.96). There was no evidence of further associations in the other groups.
Conclusions:
AMR SSIs represent a significant economic burden for clients and a welfare concern for affected patients.
34th Annual Scientific Meeting proceedings
Stream:
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Session:
Date/Time: 04-07-2025 (17:45 - 18:00) | Location:
Date/Time: 04-07-2025 (17:45 - 18:00) | Location:
Antimicrobial-Resistant Surgical Site Infections: Predictive Factors and Clinical Outcomes in Cats and Dogs
Lee SE, Glenn O, Shaw D, Olree A, Orjefelt E, Paterson G, Bowlt Blacklock KL*
The Royal (Dick) School of Veterinary Studies, University of Edinburgh, Edinburgh, United Kingdom.
Objectives:
Antimicrobial resistant (AMR) surgical site infections (SSIs) pose an increasing risk in companion animal surgery. Only a few studies have examined the clinical outcomes of AMR SSIs in veterinary practice. This study evaluated the differences in morbidity, mortality, and treatment costs between patients with AMR SSI, antimicrobial-sensitive (AMS) SSI, and those without SSI following surgery. Secondary objectives included identifying factors associated with developing multidrug-resistant (MDR) SSIs.
Methods:
We retrospectively reviewed the medical records at the University of Edinburgh Small Animal Hospital from June 2017 to September 2024. Forty-four patients with AMR SSIs and 83 with AMS SSIs were matched with 126 control patients without SSI based on similar signalment, and clinical and surgical parameters. Binary logistic regression was used to assess risk factors associated with MDR SSIs.
Results:
The total treatment costs in patients with AMR SSIs were 165% higher than in the control group and 97% higher than in the AMS SSI group. Patients with AMR SSIs also experienced longer post-operative hospitalisation and required more revision surgeries than those in the AMS SSI and control groups. The three groups had similar survival rates. Compared to the control group, logistic regression detected an association between longer anaesthesia and the development of MDR SSI (OR 1.88; 95% CI, 1.19–2.96). There was no evidence of further associations in the other groups.
Conclusions:
AMR SSIs represent a significant economic burden for clients and a welfare concern for affected patients.
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