Deck 17: Decontamination and Disinfection

Question 1

When cleaning instrument surfaces,it is acceptable to use wire brushes or scouring pads in order to thoroughly clean the debris from the instrument.

Answer 1

False
Steel wool,wire brushes,scouring pads,or powders can scratch or remove the protective finish on metal and cause corrosion.

Question 2

Personal protective equipment must be worn when cleaning instruments to prevent contact with accidental spray from contaminated body fluids and chemical cleaning solutions.

Answer 2

True
Caps,gloves,waterproof aprons,and face shields must be worn when cleaning instruments.

Question 3

What are the levels of disinfection?

A) High level,medium level,end level
B) High level,intermediate level,low level
C) High level,semi-high,low level
D) High level,medium level,low level

Answer 3

B
The disinfection levels are classified by the effectiveness of the process.High level kills all bacteria,viruses,and fungi.Intermediate level kills most bacteria,viruses,and fungi.Low level kills most vegetative bacteria,fungi,and the least resistant viruses.

Question 4

An ultrasonic cleaner sterilizes the instruments placed in it similar to a washer-sterilizer.

Question 5

High-level disinfection is not effective against Creutzfeldt-Jakob disease (CJD).

Question 6

Boiling water is an effective physical disinfectant used to kill spores.

Question 7

It is acceptable to use a hemostat rather than a needle holder to place or remove a blade from its scalpel handle.

Question 8

When instruments need repairing,OR personnel may sharpen or repair surgical instruments as needed.

Question 9

Which is the three levels of Spaulding's classification of patient care items?

A) Low items,intermediate level items,high-level items
B) Intact items,noncritical items,critical items
C) Critical items,semicritical items,noncritical items
D) Dirty,sterile,contaminated

Question 10

Which is a property of ethyl or isopropyl alcohol?

A) Nonstaining
B) Effectiveness increases when it evaporates
C) Can be used on lensed instruments with cement mountings
D) Is sporicidal

Question 11

Disinfection is the same as sterilization.

Question 12

Which is one proper way to mark an instrument for identification before being put into service?

A) Identification codes or numbers are etched into the instrument handle.
B) Names or numbers are engraved in the handles or teeth.
C) Numbers or codes are lasered onto an instrument.
D) Names or numbers are carved into an instrument handle.

Question 13

Pasteurization is a commonly used method to sterilize critical and surgical instrumentation.

Question 14

Critical disposable items should not be reprocessed for use in a surgical procedure.

Question 15

Name a method of surgical instrument disinfection.

A) Manual wiping with a chemical-impregnated cloth or sponge
B) Soaking by total immersion in betadine solution
C) Soaking tips of used instruments in saline solution
D) Rinsing in tap water

Question 16

Which disinfectant is safe to use for housekeeping purposes?

A) Formaldehyde
B) Alcohol
C) Glutaraldehyde
D) Ethylene oxide

Question 17

Instruments being placed into a disinfecting solution should be dry.

Question 18

Instruments may be immersed in which of the following solutions?

A) Ethyl alcohol
B) Distilled water
C) Saline solution
D) Chlorhexidine

Question 19

Which is the proper order of the steps involved in cleaning instruments after they are used?

A) Washer-sterilizer,manual cleaning,sterilization
B) Precleaning,washer-sterilizer,sterilization
C) Disinfection,manual cleaning,washer-sterilizer
D) Manual cleaning,sterilization,rinsing

Question 20

What is the purpose of prerinsing or presoaking instruments after use?

A) To prevent blood and debris from drying on instruments
B) To prevent the instruments from rusting
C) To soften and remove dried blood and debris
D) To eliminate the need for cleaning them before sterilization

Question 21

Which is a semicritical item used in the OR?

A) Blood pressure cuff
B) Needle holder
C) Bronchoscope
D) Breast implant

Question 22

Which is an advantage of using disposable products in the OR?

A) Disposable products are used once with an assurance of safety and effectiveness.
B) Disposable products decrease the amount of biodegradable waste produced by the OR.
C) Cross-contamination is inevitable.
D) A defect in one may mean the entire lot is defective.

Question 23

Which is a disadvantage of using ultraviolet (UV)irradiation as a means of disinfection?

A) The rays can kill selective vegetative bacteria,fungi,and lipoprotein viruses.
B) UV rays may cause skin burns.
C) UV rays produce nonionizing radiant energy.
D) Pathogens have effective contact with the UV rays for destruction.

Question 24

Which one is an action completed in an OR's processing department to ensure that instruments are safe to handle?

A) Storing
B) Ionizing
C) Distilling
D) Rinsing

Question 25

Which disinfectant contains detergent properties and causes the gradual alteration of cell membranes to produce leakage of protoplasm of some microorganisms?

A) Iodophors
B) Phenolic compounds
C) Quaternary ammonium compounds
D) Enzymatic detergent

Question 26

Which is an example of bioburden?

A) Pollen
B) Human tissue
C) Chemical sanitizers
D) Ethyl alcohol

Question 27

The washer-decontaminator goes through which of these phases?

A) Sterilization
B) Distillation
C) Neutral rinsing
D) Inspection