CRNI CRNI Peripheral Vascular Access and IV Site Management 2

Question 1

What is the primary advantage of an over-the-needle catheter (ONC) over a steel needle for peripheral IV access?

Accepted Answer

Reduced risk of infiltration once the stylet is removed

Answer

The flexible ONC catheter stays in the vein after the metal stylet is withdrawn, greatly reducing infiltration risk.

Question 2

Which assessment finding is most consistent with early peripheral IV infiltration?

Accepted Answer

Cool, pale, swollen skin at the insertion site

Answer

Cool, pale, swollen skin indicates fluid has leaked into surrounding tissue rather than flowing through the vein.

Question 3

The INS Infiltration Scale grades infiltration severity on which range?

Accepted Answer

0–4 based on clinical skin assessment findings

Answer

The INS Infiltration Scale uses a 0–4 grading system based on findings such as skin blanching, swelling, and tissue integrity.

Question 4

Which factor most increases the risk of chemical phlebitis during peripheral IV therapy?

Accepted Answer

Infusing hypertonic or irritating solutions

Answer

Hypertonic and irritating solutions damage the tunica intima, causing chemical phlebitis.

Question 5

A patient's peripheral IV site shows a 2 cm streak of redness running along the vein. This finding most likely indicates:

Accepted Answer

Phlebitis

Answer

A red streak tracking along the vein is a classic sign of phlebitis, indicating inflammation of the vessel wall.

CRNI Exam Practice Test