RHS- Infection Prevention

Which part of the x-ray machine should be covered or disinfected after each patient?

Tubehead

Which of the following will best protect the dental assistant from cross-contamination while exposing radiographs?

Gloves

The best way to prevent cross-contamination when using a sensor is by

sterilization.

disinfection.

using an antiseptic rinse agent.

using individual barrier sleeves.

Using individual barrier sleeves

When taking digital images, when should the operator put on PPE?

Before entering the patient's information in the computer

After adjusting the control settings

Before handling any items to be placed in the patient's mouth

After wiping the sensor with disinfectant

Before handling any items to be placed in the patient's mouth

Digital radiography positioning devices should be

disposed after use.

wiped with surface disinfectant for reuse.

heat sterilized.

all of the above

heat sterilized.

After a patient has been dismissed, dental unit surfaces and counter tops that may have been contaminated should be cleaned with an EPA-registered

high-level disinfectant.

low-level disinfectant.

intermediate-level disinfectant.

standard-level disinfectant.

intermediate-level disinfectant.

The best way a dental assistant can minimize cross-contamination when exposing radiographs is to;

prepare the room after the patient is seated.

dispose of items according to regulations.

touch as few surfaces as possible.

wash hands before and after procedures.

touch as few surfaces as possible.

Which of the following is considered critical and should be sterilized after use?

sensor

bite tab of XCP holder

PSP plate

PID/cone of the x-ray unit

bite tab of XCP holder

During the exposure of digital radiography the operator should;

Put on gloves to access additional items from a drawer.

Require the patient to wear safety glasses.

replace the sensor barrier sleeve after each exposure.

remove gloves to push the exposure button.

Put on gloves to access additional items from a drawer.

Which organization regulates disinfectants and chemical sterilants?

FDA

CDC

ADA

EPA

EPA

What image receptor semicritical item should be sterilized before reuse?

Positioning device

Sensor

Lead apron

None of the above

Positioning device

The lead apron and thyroid collar used during radiography should be disinfected;

after each use.

when visibly soiled.

twice daily.

once weekly.

After each use

Which of the following pathogens is NOT found in oral or respiratory secretions?

Flu virus

West Nile virus

Hepatitis B virus

Mycobacterium tuberculosis

West Nile virus

Which of the following should be used to prevent cross-contamination from exposure buttons?

Disinfectant spray

Alcohol wipe

Plastic cover

Bleach solution

Plastic cover

The total destruction of microorganisms and spores on reusable instruments is accomplished by;

ultrasonic immersion.

spraying with a germicide.

disinfecting.

sterilizing.

sterilizing.

After use, a dental sensor should be;

washed with a mild soap and rinsed with sterile water.

prepared for reuse according to manufacturer instructions.

processed in a dry heat sterilizer.

placed into a paper cup and covered with high level disinfectant.

prepared for reuse according to manufacturer instructions.

According to the CDC, how are the transmission of pathogens minimized when using phosphor sensors to capture radiographic images?

By chemically sterilizing the sensor

By heat sterilizing the sensor

By using a high-level disinfectant on the sensor

By placing a plastic barrier over the sensor

By placing a plastic barrier over the sensor

If disposable barriers are not used during a radiographic procedure all clinical surfaces should be;

wiped down.

dried.

disinfected.

sterilized.

disinfected

If a patient has a cough or cold what PPE should the operator wear while exposing digital radiographs?

Mask

Eye protection

Gloves

All of the above

All of the above

After using a lead apron on a patient for digital radiograph exposure, it should be;

folded and stored in a closed cupboard for future use.

covered with a barrier.

wiped with intermediate disinfectant.

sprayed with high level disinfectant.

wiped with intermediate disinfectant.

When preparing a patient for digital exposures, PRIOR to putting on gloves the dental assistant should;

assemble the positioning device.

adjust lighting.

place the lead apron.

wipe the sensor with an intermediate disinfectant

place the lead apron.

What surfaces remain uncovered during digital radiograph exposure and would need to be disinfected between patients?

Lead apron

Positioning device

Work surfaces

A and B

A and B

During radiographic exposures, semi-critical items that must be sterilized or disposed of include;

PID.

tubehead.

sensor positioning devices.

exposure buttons.

sensor positioning devices.

To prevent cross-contamination, wipe the counter top with

soap and water.

an EPA-approved disinfectant.

alcohol wipes.

bleach solution.

an EPA-approved disinfectant.

Which of the following items is considered a biohazardous waste in a dental office?

Bitewing tabs

Bloody gauze

Fixer solution

Tray covers

Bloody gauze

What radiography equipment would most likely come into contact with mucous membranes and are considered semi-critical devices?

Tube head

Lead apron

Sensors

All of the above

Sensors

When should gloves be worn while taking radiographs?

do not wear when putting XCP holder together

do not wear when disinfecting after the procedure

wear when placing receptor into the mouth

wear when putting barriers on x-ray unit

wear when placing receptor into the mouth

When removing a protective barrier after the exposure of radiographs, if a dental assistant touches the surface beneath the barrier the dental assistant must;

clean the surface using alcohol wipes.

dry the surface using clean 2x2 gauze.

sterilize the surface using a chemical sterilant.

disinfect the surface with an intermediate-level disinfectant.

disinfect the surface with an intermediate-level disinfectant.

What are acceptable methods for processing digital sensors between patient use?

Heat sterilization

Immersion in high-level disinfection

Disposal of sensor

None of the above

None of the above

After the completion of a radiographic procedure, the PID should be;

dried.

disinfected.

exposed.

sterilized.

disinfected.

Because digital sensors are reused repeatedly, the dental assistant;

must carefully remove and dispose the sensor sleeve into the general waste

must remove the sensor sleeve with ungloved hands

should place the sensor into a high-level disinfectant for 10 hours

All of the above

must carefully remove and dispose the sensor sleeve into the general waste

When executing a routine hand wash, the dental assistant should lather and scrub for a minimum of

15 seconds.

20 seconds.

30 seconds.

25 seconds.

20 seconds

To minimize potential infections from semi-critical items it is important the operator;

spray disinfectant on the exposure button between patients.

spray the positioning device with an intermediate disinfectant.

wear utility gloves during digital radiograph exposure.

clean and disinfect devices after removal of surface barriers.

clean and disinfect devices after removal of surface barriers.

How often should protective clothing be changed in an oral healthcare setting?

Twice daily

When visibly soiled

After each patient

Once weekly

When visibly soiled

What infection control steps are performed prior to and during dental imaging procedures?

Place barriers on tube head, dental chair, work area, and computer

Perform handwashing and don gloves

Cover sensor with barrier

All of the above

All of the above

When preparing to take a digital radiograph, after selecting the appropriate sensor size for the patient, the next step is to;

place the sensor in the mouth.

attach the wire to the sensor.

sterilize the sensor.

Place a barrier on the sensor

Place a barrier on the sensor