| Terminal Decontamination of Patient Rooms Using an Automated Mobile UV Light Unit. | |
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MedLine Citation:
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PMID: 21768755 Owner: NLM Status: In-Data-Review |
Abstract/OtherAbstract:
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Objective. To determine the ability of a mobile UV light unit to reduce bacterial contamination of environmental surfaces in patient rooms. Methods. An automated mobile UV light unit that emits UV-C light was placed in 25 patient rooms after patient discharge and operated using a 1- or 2-stage procedure. Aerobic colony counts were calculated for each of 5 standardized high-touch surfaces in the rooms before and after UV light decontamination (UVLD). Clostridium difficile spore log reductions achieved were determined using a modification of the ASTM (American Society for Testing and Materials) International E2197 quantitative disk carrier test method. In-room ozone concentrations during UVLD were measured. Results. For the 1-stage procedure, mean aerobic colony counts for the 5 high-touch surfaces ranged from 10.6 to 98.2 colony-forming units (CFUs) per Dey/Engley (D/E) plate before UVLD and from 0.3 to 24.0 CFUs per D/E plate after UVLD, with significant reductions for all 5 surfaces (all [Formula: see text]). Surfaces in direct line of sight were significantly more likely to yield negative culture results after UVLD than before UVLD (all [Formula: see text]). Mean C. difficile spore log reductions ranged from 1.8 to 2.9. UVLD cycle times ranged from 34.2 to 100.1 minutes. For the 2-stage procedure, mean aerobic colony counts ranged from 10.0 to 89.2 CFUs per D/E plate before UVLD and were 0 CFUs per D/E plate after UVLD, with significant reductions for all 5 high-touch surfaces. UVLD cycle times ranged from 72.1 to 146.3 minutes. In-room ozone concentrations during UVLD ranged from undetectable to 0.012 ppm. Conclusions. The mobile UV-C light unit significantly reduced aerobic colony counts and C. difficile spores on contaminated surfaces in patient rooms. |
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Authors:
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John M Boyce; Nancy L Havill; Brent A Moore |
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Publication Detail:
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Type: Journal Article |
Journal Detail:
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Title: Infection control and hospital epidemiology : the official journal of the Society of Hospital Epidemiologists of America Volume: 32 ISSN: 1559-6834 ISO Abbreviation: Infect Control Hosp Epidemiol Publication Date: 2011 Aug |
Date Detail:
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Created Date: 2011-07-19 Completed Date: - Revised Date: - |
Medline Journal Info:
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Nlm Unique ID: 8804099 Medline TA: Infect Control Hosp Epidemiol Country: United States |
Other Details:
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Languages: eng Pagination: 737-42 Citation Subset: IM; N |
Affiliation:
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Department of Medicine, Hospital of Saint Raphael, Yale University School of Medicine, New Haven, Connecticut. |
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From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine
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