Evaluation of 12-Week Shelf Life of Patient-Ready Endoscopes

Area of Science:

• Gastroenterology
• Infection Control
• Medical Device Reprocessing

Background:

• Endoscope contamination is a significant concern in healthcare settings.
• Previous research suggests shelf life may not be a primary factor in endoscope contamination.
• Inadequate disinfection or storage contamination are hypothesized as main causes.

Purpose of the Study:

• To evaluate bacterial and fungal presence on endoscopes after a 12-week shelf life.
• To assess the impact of using personal protective equipment during storage cabinet access on contamination.
• To determine if extended storage impacts endoscope sterility post-disinfection.

Main Methods:

• Four colonoscopes and two gastroscopes underwent liquid chemical sterilization.
• Sterilized endoscopes were stored for 12 weeks in a cabinet.
• Personal protective equipment (gown, gloves) was worn during all cabinet access.
• Endoscopes were cultured for bacteria and fungus post-storage.

Main Results:

• No bacteria or fungus were detected on any endoscopes after 12 weeks of storage.
• The use of personal protective equipment during storage access did not lead to contamination.
• Results indicate sterility was maintained throughout the 12-week storage period.

Conclusions:

• Extended shelf life of 12 weeks did not result in endoscope contamination.
• Findings support the hypothesis that inadequate disinfection or storage contamination are the primary sources of endoscope contamination.
• This study reinforces the importance of validated disinfection protocols and meticulous storage practices.