VA-BC Infusion Therapy & Solutions

Question 1

What is the maximum osmolarity threshold above which an IV solution should be administered through a central venous access device rather than a peripheral catheter?

Accepted Answer

900 mOsm/L

Answer

500 mOsm/L

Answer

600 mOsm/L

Answer

1200 mOsm/L

Question 2

Which IV solution is considered isotonic and most closely approximates the osmolarity of human blood (approximately 285–295 mOsm/L)?

Accepted Answer

0.9% Normal Saline

Answer

D5W (5% Dextrose in Water)

Answer

0.45% Normal Saline

Answer

D10W (10% Dextrose in Water)

Question 3

When administering total parenteral nutrition (TPN) with an osmolarity greater than 900 mOsm/L, which vascular access device is most appropriate?

Accepted Answer

Central venous catheter

Answer

Short peripheral IV catheter

Answer

Midline catheter

Answer

Arterial line

Question 4

Which of the following IV solutions is classified as hypotonic?

Accepted Answer

0.45% Normal Saline

Answer

Lactated Ringer's

Answer

0.9% Normal Saline

Answer

D5NS

Question 5

A nurse is preparing to administer two IV antibiotics simultaneously. What is the primary concern when mixing IV medications in the same line without a compatible flush between them?

Accepted Answer

Drug incompatibility causing precipitation or inactivation

Answer

Increased infusion cost

Answer

Prolonged infusion time only

Answer

Catheter tip displacement

Question 6

To prevent bacterial proliferation, a unit of packed red blood cells (PRBCs) must be infused within what maximum time frame from initiation?

Accepted Answer

4 hours

Answer

2 hours

Answer

6 hours

Answer

8 hours

Question 7

Which IV solution should be used exclusively for flushing lines and tubing before and after blood product administration?

Accepted Answer

0.9% Normal Saline

Answer

D5W

Answer

Lactated Ringer's

Answer

0.45% Normal Saline