VABC Maintenance & Troubleshooting of Vascular Access Devices 2

Question 1

Which flushing solution is recommended by INS guidelines for maintaining patency in most central venous access devices (CVADs) in adults?

Accepted Answer

Normal saline (0.9% NaCl)

Answer

INS guidelines recommend normal saline (0.9% NaCl) as the primary flush solution for most CVADs in adults, as it is effective and avoids heparin-related complications.

Question 2

When performing the push-pause flushing technique, what is the primary goal of creating turbulent flow?

Accepted Answer

Remove debris and prevent biofilm formation

Answer

The push-pause technique creates turbulent flow that dislodges debris and prevents biofilm accumulation on catheter walls.

Question 3

A patient's PICC line has sluggish flow but blood return is still present. Which type of occlusion is MOST likely?

Accepted Answer

Partial thrombotic occlusion

Answer

Partial thrombotic occlusion presents with sluggish flow and preserved blood return because the thrombus has not completely blocked the lumen.

Question 4

The SASH protocol for flushing and locking a PICC line stands for which sequence?

Accepted Answer

Saline, Administer medication, Saline, Heparin

Answer

SASH stands for Saline flush, Administer medication, Saline flush, Heparin lock — used when a heparin lock is indicated.

Question 5

Which action should be taken FIRST when a catheter occlusion is suspected?

Accepted Answer

Assess for external mechanical causes such as kinking or a closed clamp

Answer

Before using pharmacologic interventions, clinicians must rule out mechanical causes — such as a closed clamp, kinked tubing, or catheter malposition — as these are simple and immediately correctable.

(VABC) Vascular Access Board Certification Practice Test

(VABC) Vascular Access Board Certification Practice Test

VABC Maintenance & Troubleshooting of Vascular Access Devices 2