CRNI Infection Prevention and Control 4

Question 1

A CRNI is preparing to access a central venous catheter. Which action is the highest priority before accessing the catheter hub?

Accepted Answer

Scrub the hub with chlorhexidine wipe for at least 15 seconds

Answer

Scrubbing the hub ('scrub the hub') with an appropriate antiseptic such as chlorhexidine for at least 15 seconds and allowing it to dry is the evidence-based practice to prevent CLABSI.

Question 2

Which type of isolation is required for a patient diagnosed with pulmonary tuberculosis?

Accepted Answer

Airborne precautions in a negative-pressure room

Answer

Pulmonary TB is transmitted via airborne nuclei (<5 microns), requiring airborne precautions in an airborne infection isolation room (AIIR) with negative pressure.

Question 3

A nurse notices a patient's peripheral IV site has signs of phlebitis. What is the FIRST action the CRNI should take?

Accepted Answer

Discontinue the IV and restart at a new site

Answer

Phlebitis requires immediate discontinuation of the IV catheter and insertion at a new site to prevent progression to thrombophlebitis or infection.

Question 4

Which hand hygiene product is LEAST effective against Clostridioides difficile spores?

Accepted Answer

70% isopropyl alcohol hand rub

Answer

Alcohol-based hand sanitizers are ineffective against C. difficile spores; soap and water with mechanical friction is required to physically remove spores from hands.

Question 5

A patient receiving TPN through a PICC line develops fever, chills, and positive blood cultures. What does this scenario most likely represent?

Accepted Answer

Catheter-related bloodstream infection (CRBSI)

Answer

Fever, rigors, and positive blood cultures in a patient with a central line and TPN are classic signs of a catheter-related bloodstream infection (CRBSI).

CRNI Exam Practice Test

CRNI Exam Practice Test

CRNI Infection Prevention and Control 4