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Vascular Access Devices & Technologies Flashcards

7 cards from real VABC practice questions. Tap to flip, then mark Knew It or Still Learning โ€” missed cards come back until you master them.

Read the first 7 Vascular Access Devices & Technologies flashcards as text
  1. Which ultrasound probe orientation is used for longitudinal (in-plane) visualization during peripheral IV catheter insertion?

    Answer: Probe rotated 90 degrees so the vessel appears as a long tubular structure

    Longitudinal (long-axis, in-plane) technique rotates the probe so the vessel is visualized along its length, allowing real-time tracking of the needle within the vessel.

  2. ECG-guided PICC tip confirmation works by detecting which cardiac electrical signal at the catheter tip?

    Answer: Maximally tall P wave when the tip approaches the sinoatrial node near the SVC-RA junction

    As the guidewire or catheter tip approaches the SVC-right atrium junction near the SA node, the intracavitary P wave amplitude maximizes, confirming optimal tip position.

  3. MAGIC criteria are used to determine the most appropriate vascular access device based on:

    Answer: Infusion characteristics, duration, patient condition, and available vessels

    MAGIC (Michigan Appropriateness Guide for Intravenous Catheters) provides evidence-based criteria matching device selection to therapy duration, medication characteristics, and patient factors.

  4. A peripherally inserted central catheter (PICC) is confirmed to be in the correct position when the tip is located at:

    Answer: Cavoatrial junction (lower third of SVC to right atrial junction)

    The cavoatrial junction provides optimal hemodilution of infusates, reduces thrombosis risk, and is the target tip position per INS and AVA guidelines.

  5. Which technology uses fluoroscopy in real-time to confirm catheter tip position during PICC insertion?

    Answer: Fluoroscopic guidance with contrast injection

    Fluoroscopy combined with contrast injection directly visualizes the catheter tip position in relation to cardiac anatomy, serving as the gold standard for tip confirmation.

  6. A chlorhexidine-impregnated sponge dressing (e.g., Biopatch) placed at the catheter insertion site primarily reduces:

    Answer: Catheter-related bloodstream infection by inhibiting microbial colonization at the skin exit site

    Chlorhexidine-impregnated sponge dressings provide sustained antimicrobial activity at the skin-catheter interface, reducing CRBSI rates in high-risk patients.

  7. Which catheter material is preferred for patients with known latex allergies?

    Answer: Silicone or polyurethane catheter

    Silicone and polyurethane are latex-free materials used in all modern vascular access catheters, making them safe for latex-allergic patients.