Economic evaluation of chlorhexidine cloths on healthcare costs due to surgical site infections following total knee arthroplasty.

The purpose of this study was to evaluate the overall annual healthcare cost savings of adding a pre-operative chlorhexidine cloth preparation protocol. We used reports from the National Healthcare Safety Network and previously published reports to determine a range of surgical site infection rates following total knee arthroplasty and the cost per revision procedure. The savings listed are potential, but may be less. The cost benefit of using chlorhexidine at our institution per 1,000 total knee arthroplasty patients was a net savings of approximately $2.1 million. The annual healthcare savings ranged from $0.78 to $3.18 billion. This epidemiologic evaluation of using chlorhexidine prior to undergoing total knee arthroplasty has demonstrated the potential to decrease healthcare costs primarily by decreasing the incidence of surgical site infections.