VA-BC Catheter Types 3

Question 1

What is the primary advantage of a valved PICC (e.g., PASV or Groshong-type) over an open-ended PICC?

Accepted Answer

It reduces the need for heparin flushing by preventing blood reflux

Answer

Valved PICCs prevent blood from refluxing into the catheter lumen, reducing clot formation and often eliminating the need for heparin flushes.

Question 2

Which of the following best describes a 'power-injectable' PICC?

Accepted Answer

A PICC rated to withstand contrast injection at up to 300 psi

Answer

Power-injectable PICCs are constructed to tolerate high-pressure contrast media injection (typically up to 300 psi) required for CT imaging.

Question 3

A patient has a tunneled catheter with a Dacron cuff. Where is the cuff ideally positioned after placement?

Accepted Answer

1–2 cm inside the subcutaneous tunnel from the exit site

Answer

The Dacron cuff is positioned 1–2 cm inside the subcutaneous tunnel from the exit site so fibrous tissue ingrowth anchors the catheter and forms a barrier against infection.

Question 4

Which catheter material is most resistant to thrombotic occlusion due to its surface characteristics?

Accepted Answer

Silicone

Answer

Silicone has a smooth, hydrophobic surface with low thrombogenicity, making it more resistant to thrombus formation compared to stiffer materials like PVC or Teflon.

Question 5

A midline catheter tip should terminate in which anatomical location?

Accepted Answer

Proximal basilic or cephalic vein below the axilla

Answer

Midline catheter tips terminate in the proximal basilic, cephalic, or brachial vein below the axilla, not reaching central circulation.

(VA-BC) Vascular Access Nurse Certification Practice Test

(VA-BC) Vascular Access Nurse Certification Practice Test

VA-BC Catheter Types 3