Disinfection of needleless connectors for catheters in one second using a hand-held UV device

BackgroundThe standard of care for disinfecting needleless connectors (NCs) of central venous catheters includes alcohol-containing caps or up to a 15-second scrub with alcohol or chlorhexidine. Due to the clinical impact and high cost of treating Central line-associated bloodstream infections (CLABSI), reducing the incidence of CLABSI is a priority for public health and of the CDC. Alcohol-containing caps have been demonstrated to disinfect external NC surfaces, but not the internal surface. Ultraviolet light (UV-C) is a strategy for disinfection of NC internal and external surfaces.MethodsFour clinically relevant bacteria (S. aureus, S. epidermidis, E. coli, P. aeruginosa) and C. albicans were inoculated on NCs. Disinfection efficacy was measured after exposure to one second of 285nm UV-C light at 48mW/cm2 in a proprietary handheld device and UV-C transparent NC or standard of care. Disinfection of internal and external surfaces of NC inoculated with S. aureus using alcohol caps, and UV-C was also compared.ResultsA 4-log reduction in CFUs on the interior and exterior surfaces of the UV-transparent NC of clinically relevant pathogens was observed with UV-C light at this power for 1 second.DiscussionWe demonstrated the efficacy of UV-C for the disinfection of NCs in one second using the UV-C device in benchtop studies.ConclusionThis device holds promise for reducing CLABSI, and clinical studies are planned.