We’ve previously discussed the importance of studies versus hype when it comes to the business of health, including UV disinfection. Xenex Germ-Zapping Robots® have, in repeated studies, been shown effective at using pulsed xenon UV (PX-UV) to reduce the pathogens that cause healthcare associated infections (HAIs) not only in laboratory environments, but in peer-reviewed studies in hospital environments and in terms of real patient outcomes. We are the only UV disinfection provider that has hospitals reporting fewer infections in peer-reviewed and published studies. The only one.
Infection Control and Hospital Epidemiology published a study last month, “Evaluation of a Pulsed Xenon (PX) Ultraviolet Disinfection System for Reduction of Healthcare-Associated Pathogens in Hospital Rooms.” The study evaluated the effectiveness of PX-UV for reducing C. diff spores, MRSA, VRE, and overall contamination in a hospital setting. The study also compared our PX-UV technology to mercury UV-C for killing organisms on inoculated slides placed in a hospital room.
Yes, the results are in – the study found that our PX-UV Robot reduced recovery of MRSA, C. diff, and VRE on glass carriers and on frequently touched surfaces in hospital rooms. The study states, “the PX-UV device has some important potential advantages over other UV disinfection devices.”
This was not a head to head comparative study of mercury UV-C vs PX-UV. The study did not compare the devices in a real-world hospital environment (where factors such as shading/shadows, pathogen concentration, and organic/protein load (gross contamination) play a major role. The authors noted that the organic burden present on real-world hospital surfaces might have less impact on the killing efficacy of pulsed xenon UV than mercury UV devices.
This study did investigate the efficacy of Xenex against actual hospital bioburden in rooms after patient discharge. This study validates previous research on the efficacy of pulsed xenon and proves the effectiveness of the rapid (5 minute) disinfection cycles.
Additionally, the study noted several advantages of PX-UV:
• Xenex robots do not contain mercury. The absence of bulbs containing mercury in our PX-UV robots eliminates handling and disposal concerns associated with all other UV devices, all of which use bulbs containing mercury. Mercury is banned at a growing number of hospitals.
• Organic load did not impact the efficacy of the Xenex PX-UV Robot. Translating this to the real world, it is postulated that organic burden on real-world hospital surfaces might have less impact on the killing efficacy of PX-UV than mercury bulb devices.
• The relatively brief disinfection time (10–20 minutes per room versus up to 45 minutes for spore-killing cycles of some mercury-bulb devices) for PX-UV may facilitate greater use of the Xenex Robots.
We encourage interested individuals to read the entire study because it makes several valuable points. Most importantly, while glass slide tests may have some utility for evaluating UV disinfection, this new environmental data demonstrates that the Xenex disinfection system works well in a hospital.
Repeated studies have shown our Germ-Zapping Robots® quickly destroy the pathogens that cause infections — and hospitals using our robots are experiencing fewer infections. If you’d like to learn more about the real-world efficacy of PX-UV in combating HAIs, please contact us or review any of our other recent research studies.