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Disinfection and sterilization in health care facilities: what clinicians need to know
William A Rutala1, David J Weber
1Hospital Epidemiology, University of North Carolina Health Care System, Chapel Hill, NC 27599-7030, USA. brutala@unch.unc.edu
Abstract:
All invasive procedures involve contact between a medical device or surgical instrument and a patient's sterile tissue or mucous membranes. A major risk of all such procedures is the introduction of pathogenic microbes that could lead to infection. Failure to properly disinfect or sterilize reusable medical equipment carries a risk associated with breach of the host barriers. The level of disinfection or sterilization is dependent on the intended use of the object: critical items (such as surgical instruments, which contact sterile tissue), semicritical items (such as endoscopes, which contact mucous membranes), and noncritical items (such as stethoscopes, which contact only intact skin) require sterilization, high-level disinfection, and low-level disinfection, respectively. Cleaning must always precede high-level disinfection and sterilization. Users must consider the advantages and disadvantages of specific methods when choosing a disinfection or sterilization process. Adherence to these recommendations should improve disinfection and sterilization practices in health care facilities, thereby reducing infections associated with contaminated patient-care items.
Insights
Proper disinfection and sterilization of medical equipment are crucial for preventing infections. Different levels of reprocessing—sterilization, high-level disinfection, and low-level disinfection—are required based on the medical device
Area of Science:
- Healthcare-associated infections
- Medical device reprocessing
- Infection control
Background:
- Invasive procedures carry a risk of microbial contamination and infection.
- Reusable medical equipment requires appropriate disinfection or sterilization to prevent pathogen transmission.
- Inadequate reprocessing of patient-care items can lead to healthcare-associated infections.
Purpose of the Study:
- To outline the principles of medical device disinfection and sterilization.
- To emphasize the importance of matching reprocessing methods to device risk levels.
- To guide healthcare professionals in selecting appropriate disinfection and sterilization processes.
Main Methods:
- Categorization of medical items into critical, semicritical, and noncritical based on use.
- Defining the required reprocessing levels: sterilization, high-level disinfection, or low-level disinfection.
- Stressing the necessity of cleaning prior to disinfection and sterilization.
Main Results:
- Critical items require sterilization, semicritical items need high-level disinfection, and noncritical items need low-level disinfection.
- Cleaning is a mandatory prerequisite for effective high-level disinfection and sterilization.
- Choosing the right disinfection/sterilization method involves weighing advantages and disadvantages.
Conclusions:
- Adherence to recommended practices enhances disinfection and sterilization in healthcare settings.
- Improved reprocessing practices reduce infections linked to contaminated patient-care items.
- Implementing evidence-based guidelines is key to patient safety and infection prevention.
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