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Hi All,
I have been asked to consider the use of a UV light disinfection system
in patient care areas. Does anyone use this technology? If so I would
like to speak with you about what you use it for and the issues /
benefits you have with it.Kind Regards,
Fiona De Sousa
Infection Prevention & Control Coordinator
Sydney Adventist Hospital
185 Fox Valley Road, Wahroonga, NSW, 2076
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Dear Fiona
The use of UV for water decontamination and air decontamination has been around for quite some time. However its use as a surface disinfectant is relatively new particularly in the healthcare sector.
To my knowledge there are currently 3 studies looking at the use of UV in Healthcare.
Nerandzic et al (Nerandzic MM, Cadnum JL, Pultz MJ, Donskey CJ. Evaluation of an automated ultraviolet radiation device for decontamination of Clostridium difficile and other healthcare-associated pathogens in hospital rooms. BMC Infect Dis 2010;10:197.)
Demonstrated that UV results in a 2-3 log reduction for MRSA, Similar results for C.diff and a 3 – 4 log reduction for VRE.
Rutala et al (Rutala WA, Gergen MF, Weber DJ. Room decontamination with UV radiation. Infect Control Hosp Epidemiol 2010;31:1025-1029.)
Demonstrated a 3-4 log reduction for MRSA and VRE and a 2-3 log reduction for C.diff
Boyce et al. (Infect Control Hosp Epidemiol 2011;32(8):000-000)
Demonstrated a 1.7 to 2.9 log reduction on Cdiff spores (depending on location) using single cycle process and a 1.4 – 3.2 log reduction using a 2 stage cycle (run one cycle, love the machine and then run a second cycle) Cycle times for the single cycle varied from 34.2 to 100.1 minutes and for the multicycle process varied from 72.1 to 146.3 minutes for a single room with en-suite.
Interestingly all the studies reported that location of the surface tested relevant to the position of the machine had a big impact on findings. Much higher reductions within line of sight while far lower reduction in shadowed areas.
All the studies also reported that while UV did result in reduced frequency of MRSA, VRE and C,diff on frequently touched surfaces complete eradication of organisms was not achieved. Other Data (Owens et al. Appl Biosaf. 2005) also shows that the presence of organic matter greatly reduces efficacy.
The other issue that you may need to be aware of is material compatibility. Andersen et al. Infect Control Hosp Epidemiol. 2006.27: 729-34. And Mkinen et al. Finnish Institute of Occupational Health. 2003. Both demonstrated the possibility of rapid aging of plastics and fading of coloured paints, fabrics and textiles following repeated exposure to UV.
There are a number of non touch automated decontamination technologies on the market, all have some form of efficacy data, some with many years of peer reviewed published in use efficacy studies, some with varies degrees of clinical data in outbreak situations and even some data on clinical impact in endemic situations.
While I have no personal experience with UV the challenges (as with any other non touch decontamination technology) are the same. Implementation, ease of use, efficacy, how to verify cycles, eradication V’s reduction in environmental pathogens, material compatibility, safety, capital and running costs. It’s also worth noting that efficacy and clinical data from one UV based technology may not be replicated by another anymore than the efficacy and clinical data from one Hydrogen Peroxide based technology can be replicated by another or efficacy of all alcohol hand rubs is equal.
Before deciding on one technology I would review all the factors, look at published peer reviewed efficacy and actual in use data, look for clinical data, reference sites, published reports on use of the technology and then arrange a demonstration where you can test the equipment against a biological challenge in your own particular setting, view it in operation and get a feel for the equipment, how it would impact on your facility etc.
Kevin Griffin
Bioquell Asia Pacific Pte LtdT: +65 6592 5145
F: +65 6227 5878
M: +65 8511 3733Hi All,
I have been asked to consider the use of a UV light disinfection system in patient care areas. Does anyone use this technology? If so I would like to speak with you about what you use it for and the issues / benefits you have with it.
Kind Regards,
Fiona De Sousa
Infection Prevention & Control Coordinator
Sydney Adventist Hospital
185 Fox Valley Road, Wahroonga, NSW, 2076
If you are not the intended recipient you are hereby notified that any dissemination, distribution or reproduction of this message
is prohibited. If you have received this message in error please notify the sender immediately, then destroy the original message.
Any views expressed in this message are solely those of the individual sender, except where the sender is specifically authorised
by Sydney Adventist Hospital to state that they are the views of Sydney Adventist Hospital.
_____________________________________________________________________
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