CRNI Infection Control 5

Question 1

According to the CDC and INS guidelines, how frequently should administration sets used for continuous infusions be changed in the absence of lipids, blood, or propofol?

Accepted Answer

No more frequently than every 96 hours, unless clinically indicated

Answer

Current evidence supports changing standard IV administration sets no more often than every 96 hours (4 days) unless the line is compromised or used for blood, lipids, or propofol.

Question 2

A nurse is caring for a neutropenic oncology patient with a tunneled CVC. Which infection control measure is MOST critical in this population?

Accepted Answer

Strict aseptic technique with every catheter access due to severely impaired host defenses

Answer

Neutropenic patients lack adequate immune response, making strict aseptic technique during every catheter access essential to prevent life-threatening CRBSI.

Question 3

When a blood culture confirms a CRBSI, the provider orders catheter removal. After removal of a short-term CVC, what should the nurse do with the catheter tip?

Accepted Answer

Send the tip for semiquantitative (roll-plate) culture per facility protocol

Answer

Semiquantitative culture of the catheter tip (roll-plate method) is the standard technique to confirm catheter-related infection and identify the causative organism.

Question 4

A nurse applies a chlorhexidine-impregnated sponge dressing to a central line insertion site. What is the PRIMARY purpose of this dressing?

Accepted Answer

To provide continuous antimicrobial action to reduce catheter colonization and CRBSI

Answer

Chlorhexidine-impregnated dressings provide sustained local antimicrobial activity that has been shown to reduce catheter colonization and CRBSI rates in high-risk patients.

Question 5

Which finding on assessment of a peripheral IV site would indicate phlebitis that requires catheter removal?

Accepted Answer

A streak of redness extending along the vein with induration and pain

Answer

A red streak extending along the vein (tracking) with induration and pain indicates phlebitis, requiring immediate catheter removal and documentation per INS standards.

CRNI Exam Practice Test

CRNI Exam Practice Test

CRNI Infection Control 5