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Efficacy of silver-coated urinary catheters for reducing urinary tract infection in dogs

02 July 2023
15 mins read
Volume 14 · Issue 6
Table 1.

Abstract

Indwelling urinary catheters are frequently used in practice, however urinary catheters have been associated with catheter-associated urinary tract infections in dogs. Antimicrobial coating of urinary catheters can reduce catheter-associated urinary tract infections through the initial prevention of bacterial attachment. Historical studies have identified the benefit of silver in reducing bacteriuria in humans. This knowledge summary concluded that no study was able to demonstrate that the use of silver-coated urinary catheters is superior to silicone urinary catheters in reducing the incidence of urinary tract infections in dogs. Further investigation in vivo, with a large sample size, is required to verify the statistical significance of the effect of the silver-coating of urinary catheters in the reduction of urinary tract infections.

Indwelling urinary catheters are frequently used in practice, however urinary catheters have been associated with bacteriuria and catheter-associated urinary tract infections (UTIs) in dogs (Tissot et al, 2001; Ogeer-Gyles et al, 2006). Antimicrobial coating of urinary catheters can reduce catheter-associated UTIs through the initial prevention of bacterial attachment (Beattie and Taylor, 2011). Silver has antibacterial properties, with historical studies identifying its benefit in reducing bacteriuria in humans (Liedberg and Lunderberg, 1990; Riley et al, 1995).

This knowledge summary uses a PICO (Population, Intervention, Comparator, and Outcomes) to investigate the question: in hospitalised dogs, does the use of silver-coated urinary catheters reduce the incidence of UTI when compared to silicone Foley urinary catheters?

A clinical scenario from the perspective of a veterinary nurse was considered and a search of the literature was performed (Table 1) based on this scenario. Exclusion and inclusion criteria are discussed in Tables 2 and 3. Three papers were critically reviewed. Two were prospective, double-blind, randomised controlled clinical trials and one was a controlled, in vitro study.

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