CSSD - Central Sterile Services Department Microbiology and Infection Control Questions and Answers

Question 1

Which of the following microorganisms is considered the most resistant to sterilization processes, making it the benchmark for testing the efficacy of sterilizers?

Accepted Answer

Bacterial spores

Answer

Influenza virus

Answer

Staphylococcus aureus

Answer

Candida albicans (fungus)

Question 2

A flexible colonoscope, which will contact intact mucous membranes during a procedure, arrives in the decontamination area. According to Spaulding's Classification, how should this device be categorized, and what is the minimum required level of processing?

Accepted Answer

Semi-critical; requires high-level disinfection.

Answer

Critical; requires sterilization.

Answer

Non-critical; requires low-level disinfection.

Answer

Semi-critical; requires intermediate-level disinfection.

Question 3

Which of the following statements is MOST accurate regarding the challenges posed by biofilm on surgical instruments?

Accepted Answer

Biofilm creates a protective layer that can shield microorganisms from detergents and sterilants.

Answer

Biofilm is a form of corrosion and only affects instruments made of low-grade stainless steel.

Answer

Biofilm is easily visible to the naked eye and can be removed with a simple water rinse.

Answer

Biofilm is primarily composed of harmless environmental microbes and poses no risk to patients.

Question 4

An instrument set used on a patient with suspected Creutzfeldt-Jakob Disease (CJD) is sent to the CSSD. What is a critical processing step that must be taken for these instruments according to AAMI and CDC guidelines?

Accepted Answer

The instruments should be kept moist after use and processed using an extended steam sterilization cycle.

Answer

The instruments should be immediately processed using a standard prevacuum steam cycle.

Answer

The instruments must be cleaned and then soaked in 100% isopropyl alcohol for 12 hours.

Answer

The instruments must be discarded immediately in a red biohazard bag.

Question 5

The primary function of the CSSD is to break the chain of infection. Which link in the chain is most directly impacted by the process of cleaning and sterilizing medical devices?

Accepted Answer

Mode of Transmission

Answer

Susceptible Host

Answer

Portal of Entry

Answer

Infectious Agent

Question 6

A technician is working in the decontamination area, preparing to manually clean surgical instruments. According to Standard Precautions and AAMI guidelines, what is the MINIMUM required Personal Protective Equipment (PPE) for this task?

Accepted Answer

A fluid-resistant gown, utility gloves, a face shield, and a hair covering.

Answer

Scrubs and a surgical mask.

Answer

Utility gloves and eye protection.

Answer

A fluid-resistant gown and utility gloves.