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DEN110 Chapter 21
| Term | Definition |
|---|---|
| What are the three instrument classifications used to determine the method of sterilization? | Critical semi critical and noncritical |
| What PPE is necessary when one is processing instruments? | utility gloves, mask, eyewear and protective clothing |
| What is the basic rule of the workflow pattern in an instrument-processing area? | dirty to clean, to sterile, to storage, without ever doubling back |
| If instruments cannot be processed immediately, what should be done with them? | placed in a holding solution to prevent the drying of blood and debris in the instruments. |
| Name the two methods of precleaning instruments. | Hand scrubbing ultrasonic cleaning and thermal washing |
| How does an ultrasonic cleaner work? | producing sound waves beyond the range of human hearing. These sound waves can travel through metal and glass containers, cause cavitation (formation of bubbles in liquid). The bubbles , too small to be seen, burst by implosion. |
| What prevents kitchen dishwashers being used to preclean instruments? | must be wrapped and sterilized before they are used |
| How can instrument rusting be prevented? | rust inhibitors such as sodium nitrate are available as sprays or dips |
| Why should instruments be packaged before sterilization? | protect them from becoming contaminated after sterilization. |
| Why should you never use pins, staples, or paper clips on instrument packages? | could penetrate the packaging material |
| What are the most common forms of heat sterilization? | critical, semicritical and noncritical |
| What is a primary disadvantage of flash sterilization? | unwrapped instruments are no longer sterile once they are removed from the sterilizer |
| What is a major advantage of chemical vapor sterilization? | does not rust, dull, or corrode dry metal instruments |
| What are the two types of dry heat sterilization? | static air sterilizers, forced air sterilizers |
| What is the primary disadvantage of liquid chemical sterilization? | 10 hours contact time Inability to perform biologic monitoring |
| How should instruments processed in a liquid chemical sterilant be rinsed? | rinse with sterile water after removal to remove toxic residues |
| What causes sterilization failure? | Improper contact of sterilizing agent, improper temperature, and overloading of the sterilizer. |
| What are the three forms of sterilization monitoring? | Physical chemical and biological |
| What is a process indicator, and where is it placed? | It is placed on the outside of the pack to show that it has been exposed to heat |
| What is a process integrator, and where is it placed? | It is placed on the inside of the pack to show heat exposure temperature and pressure |
| Do process indicators and integrators ensure that an item is sterile? | NO |
| What is the best way to determine whether sterilization has occurred? | Biological monitoring is the best way |
| How should high-speed handpieces be processed before sterilization? | They should be flashed |
| What types of heat sterilization are appropriate for high-speed handpieces? | Only steam and chemical vapor heat sterilization |
| What does event-related packaging mean? | It means that unless some event occurs to contaminate the contents it is assumed that the contents will remain sterile indefinitely |
| How should clean supplies and instruments be stored? | Enclosed or covered cabinets |