Influence of the eluent on the micro-organism recovery rate in endoscope test pieces.
In: Zentralsterilisation, Jg. 28 (2020-09-01), Heft 5, S. 272-277
Online
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Zugriff:
Microbiological evaluation of reprocessed heat-sensitive (thermolabile) flexible endoscopes after use under real, everyday conditions (real-life instruments) is carried out, e.g. in accordance with Annex 10 to the guideline compiled by the DGKH*, DEGEA, DGSV, DGVS and AKI, for performance qualification of automated reprocessing processes for heat-sensitive flexible endoscopes as well as during periodic routine checks to assure the reprocessing quality of these medical devices. Among the tasks performed for these investigations, rinse samples are taken from all endoscope channels and evaluated to determine the total number of microorganisms and the presence of any relevant potential pathogens. Elution of the endoscope channels is performed in accordance with the guideline using 0.9% sodium chloride (NaCl) solution. To investigate whether the composition of the eluent influenced the microorganism recovery rate, comparative systematic tests were conducted using the test piece/process challenge device (PCD) model described in Annex 9 to the guideline (PTFE tube, contaminated with reactivated, coagulated sheep blood and Enterococcus faecium). Using sodium chloride (NaCl), DNP, FHM and T+Thio solutions, the recovery rates were determined in nine participating laboratories. The results did not show any statistically significant differences between the various eluents, and the mean difference in the recovery rates did not exceed 0.51%. Based on the findings obtained with test pieces, the composition of the eluents used in this study had no influence on the microorganism recovery rate. [ABSTRACT FROM AUTHOR]
Titel: |
Influence of the eluent on the micro-organism recovery rate in endoscope test pieces.
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Autor/in / Beteiligte Person: | Wehrl, Markus |
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Zeitschrift: | Zentralsterilisation, Jg. 28 (2020-09-01), Heft 5, S. 272-277 |
Veröffentlichung: | 2020 |
Medientyp: | academicJournal |
ISSN: | 0942-6086 (print) |
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