Techniques used to clean and sterilize flexible ureteroscopes left behind contamination that included debris, residue, and bacteria, in this study presented June 14 at the 44th Annual Conference of the Association for Professionals in Infection Control.
Researchers with Ofstead & Associates (St Paul, Minnesota) sampled 16 ureteroscopes at two institutions after they were cleaned and sterilized with hydrogen peroxide gas.
Contamination was found on 100% of the ureteroscopes:
Visual inspections found debris protruding into channels, oily deposits, and white foamy residue.
The study is evidence that contaminated ureteroscopes are being used, with unknown implications for patients, the authors say.
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