Nokea
You are assigned to observe in the cardiac catheterization laboratory. What will you do before leaving the unit to go to lunch?
- A. Change from hospital scrubs back into street clothes.
- B. Cover your scrubs with a laboratory coat or cloth isolation gown.
- C. Wear shoe covers over your shoes and a patient gown over your scrubs.
- D. No special precautions are needed when you leave the unit for lunch.
Correct Answer: B
Rationale: Covering scrubs with a laboratory coat or isolation gown prevents contamination of the sterile environment when returning to the cardiac catheterization laboratory after leaving for lunch.
You may also like to solve these questions
Administering an insulin injection should use which technique?
- A. Sterile
- B. Clean
Correct Answer: A
Rationale: Administering an insulin injection requires sterile technique because it involves piercing the skin with a needle, bypassing the body's natural defenses.
When you obtain a sterile pack, you notice evidence of strike-through. What will you do?
- A. Do not use the pack and dispose of it according to facility policy.
- B. Dispose of the outer wrap because it has been wet and is considered contaminated.
- C. Strike-through means the pack has passed the expiration date and is no longer sterile.
- D. Use the pack as long as the hash marks on the tape have changed colors.
Correct Answer: A
Rationale: Strike-through indicates that moisture has penetrated the sterile pack, compromising its sterility. The pack should not be used and must be disposed of according to facility policy to prevent infection risk.
Which is true of setting up and adding to a sterile field?
- A. The outer 2-inch margin of the sterile drape is considered unsterile.
- B. If the sterile drape extends below the table surface, the parts below it are considered unsterile.
- C. You may place unsterile items on a sterile field as long as you wear sterile gloves.
- D. You may touch the outer 1 inch of the sterile drape with your bare hand because it is considered unsterile.
- E. A sterile drape with a moisture-proof back is not considered unsterile if it becomes wet.
- F. When pouring sterile liquids into a basin on a sterile field, hold the bottle 12 to 14 inches above the basin.
Correct Answer: B,D
Rationale: The parts of a sterile drape extending below the table surface are considered unsterile, and the outer 1-inch margin of the drape is also unsterile, allowing bare hand contact without contaminating the field. The other options are incorrect as they violate sterile technique principles.
On the following diagram, label the parts of the needle and syringe that need to be kept sterile.
- A. Tip of the needle
- B. Barrel of the syringe
- C. Plunger of the syringe
- D. Hub of the needle
- E. Bevel of the needle
- F. Flange of the syringe
- G. Inside of the syringe barrel
Correct Answer: A,D,E,G
Rationale: The tip, hub, bevel of the needle, and the inside of the syringe barrel must be kept sterile as they come into direct contact with the patient's tissues or fluids, preventing infection.
Inserting a tube through the nose and into the stomach should use which technique?
- A. Sterile
- B. Clean
Correct Answer: A
Rationale: Inserting a nasogastric tube requires sterile technique because it enters the stomach, bypassing normal body defenses and posing an infection risk if contaminated.