ASCP Venipuncture Complications and Special Procedures Flashcards

When antecubital veins are not accessible for venipuncture in an adult, the recommended alternative site is:

Answer: Hand veins on the dorsal surface

Hand veins on the dorsal surface are the standard alternative venipuncture site when antecubital veins are inaccessible in adult patients.

A patient has IV lines running in both arms. The BEST course of action is to:

Answer: Consult nursing staff and draw from an alternative site such as a hand vein

Drawing from an alternative site after nursing consultation prevents IV fluid contamination and specimen dilution.

When palpating for a vein that cannot be visualized, the phlebotomist should use:

Answer: The index finger for tactile sensitivity

The index finger provides the greatest tactile sensitivity for detecting the bounce and resilience of a vein beneath the skin.

A vein collapses during collection with an evacuated tube. The BEST technique to manage this is:

Answer: Use a syringe or butterfly with a smaller tube to reduce vacuum on the vein

Reducing vacuum by using a syringe or a small-volume tube allows the collapsed vein walls to refill and prevents them from being sucked shut.

In an obese patient where veins are not palpable, which technique BEST promotes venous filling?

Answer: Lowering the arm and applying a warm compress to promote vasodilation

Warming the arm causes vasodilation and gravity from lowering the arm promotes venous filling, making veins more accessible in difficult patients.

Which needle gauge is MOST appropriate when collecting from a patient with small, fragile veins?

Answer: 23 gauge

A 23-gauge needle has the smallest diameter, producing the least trauma and least likely to collapse or rupture fragile veins.