VA-BC Catheter Types 5

Question 1

Which catheter type is MOST appropriate for a neonate requiring long-term total parenteral nutrition?

Accepted Answer

Tunneled silicone CVC (e.g., Broviac)

Answer

Tunneled silicone CVCs such as the Broviac are preferred for neonates requiring long-term TPN due to their small size, flexibility, and reduced infection risk.

Question 2

The Hickman catheter and Broviac catheter are both tunneled CVCs. What is the primary difference between them?

Accepted Answer

Hickman catheters have a larger internal lumen diameter than Broviac catheters

Answer

The Hickman catheter has a larger lumen diameter than the Broviac, making it suitable for adults requiring high-volume infusions, while the Broviac's smaller lumen is used in pediatric patients.

Question 3

A patient with a peripherally inserted central catheter develops a pinch-off sign on chest X-ray. This finding indicates:

Accepted Answer

The catheter is compressed between the clavicle and first rib

Answer

Pinch-off sign on X-ray indicates compression of the PICC between the clavicle and first rib, which can lead to catheter fracture and embolism if not repositioned.

Question 4

Which of the following best describes the purpose of the 'cuff' on a tunneled hemodialysis catheter?

Accepted Answer

It promotes fibrous tissue ingrowth that anchors the catheter and provides an infection barrier

Answer

The Dacron cuff on a tunneled catheter promotes fibroblast ingrowth that mechanically anchors the device and creates a biological barrier to ascending microorganisms.

Question 5

When selecting catheter lumen number for a critically ill ICU patient, the guiding principle should be:

Accepted Answer

Use the minimum number of lumens clinically necessary to reduce infection risk

Answer

Each additional lumen increases infection risk; INS and CDC guidelines recommend using the minimum number of lumens necessary for the patient's clinical needs.

(VA-BC) Vascular Access Nurse Certification Practice Test

(VA-BC) Vascular Access Nurse Certification Practice Test

VA-BC Catheter Types 5