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Increasing potential risks of contamination from repetitive use of endoscope

 Dae-Hyung Lee  ;  Dong Bin Kim  ;  Hyun Yong Kim  ;  Hyun Sook Baek  ;  Soon-Young Kwon  ;  Mi Hee Lee  ;  Jong-Chul Park 
 American Journal of Infection Control, Vol.43(5) : 13-17, 2015 
Journal Title
 American Journal of Infection Control 
Issue Date
Bacterial Load* ; Disinfection/methods* ; Endoscopes/microbiology* ; Equipment Reuse* ; Escherichia coli/isolation & purification* ; Humans ; Mycobacterium/isolation & purification* ; Pseudomonas aeruginosa/isolation & purification*
Flexible endoscope ; Infection ; Reprocessing ; Reusable medical device
BACKGROUND: Medical devices inserted into the human body can be divided into single-use devices and reusable medical devices (RMDs) depending on the method of use. RMDs are applied to >1 patient, and users reprocess them prior to repeat use. Therefore, reprocessing of RMDs has become more difficult, and issues related to infection risk have become more prevalent. METHODS: Research was performed to compare differences in surface alterations between not-aged (NA) samples and accelerated-aging (AA) samples. NA and AA samples were exposed to potential contaminants and treated with the same cleaning conditions. Then the residual contaminants were analyzed, and adhesion characteristics were investigated. RESULTS: Significant differences between the 2 sample groups were observed in the pattern of physical surface alterations. Similar to the endoscope for clinical use, a deep crack was found in the surface of the AA sample. According to the binding affinity test, highly likely potential contaminants were found more frequently on AA samples. CONCLUSION: The results suggest the necessity of limiting the duration of time that RMDs may be used, considering the potential risk of infection from repetitive use of RMDs, and also raised the possibility of applying this simulation model of AA. This methodology can be applied to various RMDs, including endoscopes.
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1. College of Medicine (의과대학) > Dept. of Medical Engineering (의학공학교실) > 1. Journal Papers
Yonsei Authors
Park, Jong Chul(박종철) ORCID logo https://orcid.org/0000-0003-0083-5991
Baek, Hyun Sook(백현숙)
Lee, Dae Hyung(이대형)
Lee, Mi Hee(이미희) ORCID logo https://orcid.org/0000-0002-9630-7044
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