Related Experiment Video
Updated: May 11, 2026

Microbial Control and Monitoring Strategies for Cleanroom Environments and Cellular Therapies
Published on: March 17, 2023
Better instructions for use to improve reusable medical equipment (RME) sterility
Jonathan D Jolly1, Emily A Hildebrand, Russell J Branaghan
1Center for Evaluation of Human Factors in Reprocessing Safety, Phoenix VA Health Administration, USA. jonathan_jolly@hotmail.com
Human factors-based instructional aids significantly improved endoscope reprocessing success rates, enhancing patient safety. These aids address common reprocessing errors like poor visibility and memory demands.
Area of Science:
- Healthcare quality improvement
- Medical device reprocessing
- Human factors engineering
Background:
- Endoscope reprocessing failures contribute to patient-to-patient transmission of pathogens.
- Identified issues include poor visibility, high memory demands, and insufficient feedback in current reprocessing methods.
Purpose of the Study:
- To evaluate the effectiveness of human factors-based instructional aids for endoscope reprocessing.
- To improve the completion rate and reduce errors in endoscope reprocessing.
Main Methods:
- Designed new instructional aids based on human factors principles to replace manufacturer-provided aids.
- Conducted a usability test comparing novice performance with standard aids versus new aids.
Main Results:
- The experimental group using new aids achieved an 87.1% completion rate, versus 44.7% for the control group.
- Significant improvements were observed in 27 out of 60 subtasks.
- The use of instructional aids led to a more successful reprocessing outcome.
Conclusions:
- Human factors-based instructional aids enhance the successful completion of endoscope reprocessing tasks.
- Improved reprocessing increases the likelihood of endoscope safety for patient use.
- These design principles can be adapted for electronic systems to further improve patient safety.
Related Concept Videos
Methods of Sterilization II: Chemical Methods
Using chemical sterilization rather than heat to clean out equipment is recommended. It eradicates and removes all bacteria,...
Standard Precaution
Hand hygiene is the most crucial means to prevent the transmission of disease. Employers are legally required to provide their workers with personal protective equipment (PPE) to minimize exposure or contact with...
Cleaning, Sterilization, and Disinfection
Cleaning
The cleaning process usually involves using water with detergents or enzymatic cleaner and removing foreign material from objects and surfaces, including organic material such as body fluids or inorganic material like soil. Cleaning is performed before high-level disinfection and sterilization because foreign materials on the cover of the devices interfere with process...
Key Techniques in Microbiology
Methods of Sterilization I: Physical Methods
Steam sterilization uses non-toxic, low-cost moist heat in the form of saturated steam under pressure, which is fast, microbicidal, and sporicidal, and quickly warms and penetrates fabrics. Autoclaves, or steam sterilizers, expose each item to direct steam contact for a predetermined time at the necessary...
Healthcare Associated Infections II: Preventive Measures
The best practices for preventing healthcare-associated infections include hand hygiene, patient risk...

