NHA Certified Phlebotomy Technician (CPT)Collection RoutineMedium
A phlebotomy technician is preparing to perform a venipuncture on a patient with fragile veins. Which of the following venipuncture devices should the technician select to minimize trauma?
- A23-gauge winged infusion set
- B21-gauge straight needle
- C18-gauge hypodermic needle
- D20-gauge multi-sample needle
Show answer & explanationAnswer & explanation
Correct answer: A. 23-gauge winged infusion set
A 23-gauge winged infusion set (butterfly needle) has a smaller gauge and a flexible tubing, which reduces pressure and allows for easier manipulation, making it ideal for fragile veins.
Why the other options are wrong
- B. A 21-gauge needle is standard but may be too large for fragile veins, increasing the risk of trauma.
- C. An 18-gauge needle is very large and would cause significant trauma to fragile veins.
- D. A 20-gauge needle is larger than ideal for fragile veins and may still cause trauma.
Winged Infusion Set (Butterfly Needle)
A venipuncture device consisting of a small-gauge needle with plastic wings and flexible tubing, designed for precise venipuncture and use on small or fragile veins.
- Smaller gauge (e.g., 23, 25 gauge)
- Wings provide better grip and control
- Flexible tubing reduces vein movement
- Ideal for geriatric, pediatric, or difficult venipunctures
Memory trick: Fragile veins need a 'Butterfly' for a gentle touch.