CMDRT - Certified Medical Device Reprocessing Technician Low-Temperature Sterilization Questions and Answers

Question 1

A flexible endoscope cannot be sterilized using steam due to its heat-sensitive nature.
Which of the following low-temperature sterilization methods is incompatible with devices containing cellulose-based materials like paper or linen?

Accepted Answer

Hydrogen Peroxide Gas Plasma

Answer

Ethylene Oxide (EO)

Answer

Ozone (O3)

Answer

Peracetic Acid Immersion

Question 2

A hospital's MDRD processes many heat-sensitive, complex devices. They are considering a low-temperature sterilization method known for its safety, as its primary byproducts are non-toxic. Which method breaks down into water and oxygen?

Accepted Answer

Vaporized Hydrogen Peroxide (VHP)

Answer

Ethylene Oxide (EO)

Answer

Formaldehyde

Answer

Glutaraldehyde

Question 3

An MDRT is preparing a load for an Ethylene Oxide (EO) sterilizer. Which of the following is a critical parameter that must be controlled and monitored for a successful EO sterilization cycle?

Accepted Answer

Relative humidity

Answer

Generation of a plasma state

Answer

Deep vacuum pressure below 1 millibar

Answer

Acidic pH level

Question 4

After a successful low-temperature sterilization cycle using hydrogen peroxide gas plasma, a technician opens the sterilizer door. What is the immediate next step regarding the processed devices?

Accepted Answer

They can be handled safely and are ready for immediate use or storage.

Answer

They must be placed in an aerator for 8-12 hours.

Answer

They require a quarantine period in a negative pressure room.

Answer

They need to be rinsed with sterile water to remove residue.

Question 5

Which type of biological indicator (BI) is used to monitor the efficacy of both Vaporized Hydrogen Peroxide (VHP) and Hydrogen Peroxide Gas Plasma sterilization cycles?

Accepted Answer

Geobacillus stearothermophilus spores

Answer

Bacillus atrophaeus spores

Answer

Bacillus subtilis spores

Answer

Clostridium sporogenes spores

Question 6

A medical device reprocessing department is deciding between Ethylene Oxide (EO) and Vaporized Hydrogen Peroxide (VHP) for a new low-temperature sterilizer. A key consideration is the post-cycle processing time. What is a primary disadvantage of EO compared to VHP in this regard?

Accepted Answer

EO requires a lengthy aeration period to remove toxic residues.

Answer

EO cycles are significantly hotter.

Answer

EO cannot be used for devices with long lumens.

Answer

EO sterilizers require more frequent maintenance.

A flexible endoscope cannot be sterilized using steam due to its heat-sensitive nature.Which of the following low-temperature sterilization methods is incompatible with devices containing cellulose-based materials like paper or linen?

A flexible endoscope cannot be sterilized using steam due to its heat-sensitive nature.
Which of the following low-temperature sterilization methods is incompatible with devices containing cellulose-based materials like paper or linen?