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A comparison of the efficacy of multiple ultraviolet light room decontamination devices in a radiology procedure room

Published online by Cambridge University Press:  30 January 2019

Jennifer L. Cadnum ,
Annette L. Jencson ,
Scott A. Gestrich ,
Scott H. Livingston ,
Boris A. Karaman ,
Kevin J. Benner ,
Brigid M. Wilson  and
Curtis J. Donskey
Jennifer L. Cadnum
Affiliation:
Research Service, Louis Stokes Cleveland VA Medical Center, Cleveland, Ohio
Annette L. Jencson
Affiliation:
Research Service, Louis Stokes Cleveland VA Medical Center, Cleveland, Ohio
Scott A. Gestrich
Affiliation:
Research Service, Louis Stokes Cleveland VA Medical Center, Cleveland, Ohio
Scott H. Livingston
Affiliation:
Research Service, Louis Stokes Cleveland VA Medical Center, Cleveland, Ohio
Boris A. Karaman
Affiliation:
Radiology Department, Louis Stokes Cleveland VA Medical Center, Cleveland, Ohio
Kevin J. Benner
Affiliation:
Current, Powered by GE, Cleveland, Ohio
Brigid M. Wilson
Affiliation:
Geriatric Research, Education and Clinical Center, Louis Stokes Cleveland VA Medical Center, Cleveland, Ohio
Curtis J. Donskey*
Affiliation:
Geriatric Research, Education and Clinical Center, Louis Stokes Cleveland VA Medical Center, Cleveland, Ohio Case Western Reserve University School of Medicine, Cleveland, Ohio
*
Author for correspondence: Curtis J. Donskey, Geriatric Research, Education and Clinical Center 1110W, Louis Stokes Cleveland VA Medical Center, 10701 East Boulevard, Cleveland, Ohio 44106. E-mail: [email protected]
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Abstract

Objective

To evaluate the efficacy of multiple ultraviolet (UV) light decontamination devices in a radiology procedure room.

Design

Laboratory evaluation.

Methods

We compared the efficacy of 8 UV decontamination devices with a 4-minute UV exposure time in reducing recovery of methicillin-resistant Staphylococcus aureus (MRSA), vancomycin-resistant Enterococcus (VRE), and Clostridium difficile spores on steel disk carriers placed at 5 sites on a computed tomography patient table. Analysis of variance was used to compare reductions for the different devices. A spectrometer was used to obtain irradiance measurements for the devices.

Results

Four standard vertical tower low-pressure mercury devices achieved 2 log10CFU or greater reductions in VRE and MRSA and ~1 log10CFU reductions in C. difficile spores, whereas a pulsed-xenon device resulted in less reduction in the pathogens (P<.001). In comparison to the vertical tower low-pressure mercury devices, equal or greater reductions in the pathogens were achieved by 3 nonstandard low-pressure mercury devices that included either adjustable bulbs that could be oriented directly over the exam table, a robotic base allowing movement along the side of the table during operation, or 3 vertical towers operated simultaneously. The low-pressure mercury devices produced primarily UV-C light, whereas the pulsed-xenon device produced primarily UV-A and UV-B light. The time required to move the devices from the corner of the room and set up for operation varied from 18 to 59 seconds.

Conclusions

Many currently available UV devices could provide an effective and efficient adjunct to manual cleaning and disinfection in radiology procedure rooms.

Type
Original Article
Information
Infection Control & Hospital Epidemiology , Volume 40 , Issue 2 , February 2019 , pp. 158 - 163
Copyright
This work is classified, for copyright purposes, as a work of the U.S. Government and is not subject to copyright protection within the United States. 

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Footnotes

Cite this article: Cadnum JL, et al. (2019). A comparison of the efficacy of multiple ultraviolet light room decontamination devices in a radiology procedure room. Infection Control & Hospital Epidemiology 2019, 40, 158–163. doi: 10.1017/ice.2018.296

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