CER Decontamination and Manual Cleaning 2

Question 1

What is the primary purpose of pre-cleaning an endoscope immediately after a procedure?

Accepted Answer

To remove gross soil before transport to the reprocessing area

Answer

To achieve high-level disinfection

Answer

To sterilize external surfaces

Answer

To neutralize enzymatic detergent residue

Question 2

Which type of brush is recommended for cleaning the instrument channel of a flexible endoscope?

Accepted Answer

A brush sized exactly to the channel diameter per manufacturer instructions

Answer

A brush that is 10% larger than the channel diameter

Answer

Any stiff-bristle brush available in the department

Answer

A brush that is 50% smaller than the channel diameter for flexibility

Question 3

How many times should a channel brush be passed through an endoscope channel during manual cleaning?

Accepted Answer

Until the brush emerges visibly clean

Answer

Once in each direction

Answer

Exactly three times regardless of soil level

Answer

Ten times minimum per SGNA guidelines

Question 4

What should be done with single-use cleaning brushes after reprocessing an endoscope?

Accepted Answer

Discard after each use

Answer

Sterilize and reuse up to 10 times

Answer

Soak in enzymatic solution for 30 minutes then reuse

Answer

Autoclave between uses

Question 5

During manual cleaning, why should the endoscope be submerged in cleaning solution?

Accepted Answer

To reduce splashing and minimize aerosolization of contaminants

Answer

To speed up enzymatic activity

Answer

To allow the detergent to penetrate the outer casing

Answer

To prevent damage to the insertion tube coating

Question 6

What is the correct dilution practice for enzymatic cleaners used in endoscope reprocessing?

Accepted Answer

Follow the manufacturer's recommended dilution exactly

Answer

Double the recommended concentration for heavily soiled scopes

Answer

Use the minimum concentration to extend product life

Answer

Dilute at half the recommended rate to reduce residue

Question 7

Which water temperature is generally recommended for mixing enzymatic cleaning solutions for endoscopes?

Accepted Answer

Lukewarm water per manufacturer specifications, typically 20–35°C

Answer

Cold water below 15°C to prevent protein coagulation

Answer

Boiling water to activate enzymes faster

Answer

Distilled water at exactly 40°C regardless of manufacturer guidance