Device Selection & Insertion Techniques Flashcards

Which catheter material is associated with the LOWEST thrombogenicity for PICC lines?

Answer: Polyurethane or silicone

Polyurethane and silicone are the preferred materials for PICCs due to their lower thrombogenic and tissue-reactive properties.

During PICC insertion, the patient's arm should be positioned at what angle relative to the body?

Answer: 90 degrees (perpendicular to body)

Abducting the arm to 90 degrees straightens the venous pathway and facilitates PICC advancement toward the central circulation.

A power-injectable PICC differs from a standard PICC in that it:

Answer: Withstands high-pressure contrast injection for CT imaging

Power-injectable PICCs are rated to withstand the high injection pressures (typically 300 psi) used for CT contrast administration.

Which factor is most important in determining catheter-to-vein ratio to reduce thrombosis risk in PICC insertion?

Answer: Catheter occupying no more than 45% of the vein diameter

The catheter should occupy no more than 45% of the vein's inner diameter to maintain adequate blood flow and minimize thrombosis risk.

An implanted port is accessed using which specialized needle?

Answer: Huber needle (non-coring needle)

A Huber needle has a deflected tip designed to prevent coring of the port septum, preserving septum integrity for repeated access.

When using the modified Seldinger technique for CVAD insertion, what is the correct sequence?

Answer: Needle → guidewire → dilator → catheter

The modified Seldinger technique involves: venipuncture with needle, guidewire insertion, dilation of the tract, then catheter advancement over the guidewire.

Which dressing type is recommended for CVAD insertion sites per INS standards?

Answer: Transparent semipermeable membrane (TSM) changed every 5–7 days

TSM dressings allow site inspection without removal and should be changed every 5–7 days or immediately if soiled, loose, or wet.