Silver Alloy Coated Catheters Reduce Catheter-Associated Bacteriuria

Br J Urol. 1990 Apr;65(4):379-81. doi: 10.1111/j.1464-410x.1990.tb14760.x.


The tendency of indwelling catheters to cause urinary tract infection was evaluated in a randomised clinical study of 223 patients. A Foley catheter coated with silver alloy on both inner and outer surfaces was used in 60 patients; 60 others received a Teflonised latex Foley's catheter and the remaining 103 patients were excluded because of antibiotic treatment, diabetes, etc. There was a statistically significant difference in the incidence of catheter-associated bacteriuria (greater than 10(5) organisms/ml) in the 2 groups after 6 days' catheterisation: 6 patients with the silver coated catheter developed bacteriuria compared with 22 who had the Teflonised latex catheter. This suggests that the silver impregnated urethral catheters reduce the incidence of catheter-associated urinary tract infection.

Publication types

  • Clinical Trial
  • Randomized Controlled Trial
  • Research Support, Non-U.S. Gov't

MeSH terms

  • Bacteriuria / prevention & control*
  • Catheters, Indwelling / adverse effects*
  • Escherichia coli / isolation & purification
  • Female
  • Humans
  • Male
  • Middle Aged
  • Randomized Controlled Trials as Topic
  • Silver
  • Time Factors
  • Urinary Catheterization / instrumentation*


  • Silver