Low-quality evidence suggested a benefits of silver-coated catheters over standard latex catheters.This was based on a decreased risk of bacteriurimia / unspecified UTI with silver-coated catheters and no evidence of increased urethral irritation or antimicrobial resistance in studies that reported data on microbiological outcomes.Differences were significant for silver alloy - coated catheters but not silver oxide - coated catheters.In a meta - analysis of randomized controlled trial (see Appendix),silver alloy - coated catheters reduced the risk of asymptomatic bacteriuria compared to standard latex catheters(control latex catheters were either uncoated or coated with hydrogel,Teflon,or silicone),whereas there were no differences when compared to standard,all silicone catheters.