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Residuals on medical devices following reprocessing
1Technical Hygiene, Universitätsklinikum Benjamin Franklin, Free University Berlin, Germany.
Abstract:
Micro-organisms may be transmitted by medical devices. A large variety of infectious agents may be involved in infections transmitted by endoscopic procedures. We review a series of examples that demonstrate to what extent micro-organisms can be detected on medical devices and how transmission on to subsequently examined persons due to inadequate reprocessing can occur. Hardly any data are available regarding residuals of process chemicals, although numerous published cases of glutaraldehyde-related colitis demonstrate that this issue requires urgent clarification. A risk of endoscope contamination exists, interalia, if washer-disinfectors are technically defective or are incorrectly operated. In particular, a final rinse water of poor microbiological quality can lead to recontamination of endoscopes.
Insights
Medical devices can transmit infections. Inadequate reprocessing of endoscopes can lead to micro-organism transmission, posing risks to patients. Further research on chemical residuals is needed.
Area of Science:
- Microbiology
- Infectious Diseases
- Medical Device Reprocessing
Background:
- Medical devices, particularly endoscopes, can harbor and transmit a variety of infectious agents.
- Inadequate reprocessing of medical devices is a significant concern for patient safety.
- Limited data exists on chemical residuals on reprocessed medical devices.
Purpose of the Study:
- To review the transmission of micro-organisms via medical devices.
- To highlight risks associated with inadequate endoscope reprocessing.
- To emphasize the need for clarification on chemical residuals.
Main Methods:
- Review of published examples of micro-organism detection on medical devices.
- Analysis of transmission routes due to reprocessing failures.
- Discussion of chemical residuals, such as glutaraldehyde.
Main Results:
- Micro-organisms are frequently detected on medical devices.
- Inadequate reprocessing, including faulty equipment or poor operating procedures, leads to transmission.
- Poor microbiological quality of rinse water can recontaminate endoscopes.
Conclusions:
- Inadequate reprocessing of medical devices poses a risk of micro-organism transmission.
- Further investigation into chemical residuals, like glutaraldehyde, is critical.
- Ensuring proper reprocessing protocols and water quality is essential to prevent infections.