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Bacterial survival on radiographic cassettes
Sonya R Lawson1, Ron Sauer, Mary B Loritsch
1Department of Educational Research, Virginia Commonwealth University School of Medicine, Richmond, Va., USA.
Radiologic Technology
|August 6, 2002
Summary
Common bacteria like Escherichia coli can survive for two weeks on radiographic imaging cassettes, highlighting the need for effective cleaning protocols in diagnostic imaging to prevent healthcare-associated infections.
Area of Science:
- Microbiology
- Infection Control
- Diagnostic Imaging
Background:
- Radiographic imaging receptors are frequently used in healthcare settings.
- The survival of pathogenic bacteria on these surfaces can pose a risk for nosocomial transmission.
- Standard cleaning protocols for imaging equipment may not adequately address bacterial viability.
Purpose of the Study:
- To determine the survival duration of common pathogenic bacteria on commonly used radiographic imaging receptors.
- To assess the viability of Escherichia coli, Enterococcus faecalis, and Staphylococcus aureus on different cassette types over a two-week period.
Main Methods:
- Three types of radiographic cassettes (Kodak 400 speed, Dupont 400 speed, Fuji computed radiography) were inoculated with Escherichia coli, Enterococcus faecalis, and Staphylococcus aureus.
- Inoculated cassettes were incubated for two weeks.
- Bacterial growth and viability were monitored throughout the incubation period.
Main Results:
- All tested radiographic cassettes supported confluent bacterial growth for the entire two-week observation period.
- No significant reduction in bacterial numbers was observed on any of the cassette types.
- Escherichia coli, Enterococcus faecalis, and Staphylococcus aureus demonstrated prolonged survival on the imaging receptors.
Conclusions:
- Common pathogenic bacteria can persist on radiographic imaging cassettes for extended durations.
- Effective cleaning and disinfection regimens are crucial for preventing the spread of infections within diagnostic imaging departments.
- Enhanced infection control measures are necessary to mitigate the risk of nosocomial transmission associated with contaminated imaging equipment.