ICE Infection Prevention & Sterilization Flashcards

What is the purpose of a process challenge device (PCD) used during biological monitoring?

Answer: To create a defined worst-case challenge to the sterilization process

A PCD places the biological indicator inside a device that makes it harder for the sterilant to reach the BI, simulating the most difficult items in a typical load.

What is the role of enzymatic indicators in monitoring the cleaning step of reprocessing?

Answer: They detect residual protein on instruments to verify cleaning adequacy

Protein detection tests provide objective measurement of cleaning effectiveness, which is critical because debris can cause sterilization failure.

How should single-use dental devices be handled per CDC guidelines?

Answer: Must be used once and disposed of—never reprocessed

Single-use devices are designed for one-time use and must be discarded. Reprocessing may compromise structural integrity, sterility, and function.

What is the purpose of pre-procedural mouth rinsing in dental infection control?

Answer: To reduce oral microorganisms released in aerosols and spatter during procedures

A 30-60 second rinse with 0.12% chlorhexidine gluconate can reduce oral bacterial counts by up to 90%, decreasing aerosol contamination.

What distinguishes intermediate-level from low-level disinfection in dental surface management?

Answer: Intermediate kills mycobacteria; low-level does not reliably kill mycobacteria

Intermediate-level disinfection kills mycobacteria (the tuberculocidal claim is the defining characteristic), while low-level does not.

How should dental impressions be handled before sending to a laboratory?

Answer: Rinse to remove debris and disinfect per impression material manufacturer's guidelines

Impressions should be rinsed, disinfected using a material-compatible method, rinsed again, and transported in sealed labeled containers.