NHA Certified Phlebotomy Technician (CPT)Collection RoutineMedium
A phlebotomy technician is performing a venipuncture on an elderly patient with fragile, rolling veins. Which of the following techniques should the technician use to prevent the vein from collapsing or rolling?
- APerform a deeper puncture to reach a more stable vein.
- BAnchor the vein firmly with the thumb of the non-dominant hand.
- CUse a larger gauge needle (e.g., 18G) to ensure quick collection.
- DApply a tight tourniquet for an extended period.
Show answer & explanationAnswer & explanation
Correct answer: B. Anchor the vein firmly with the thumb of the non-dominant hand.
Anchoring the vein firmly both above and below the puncture site with the non-dominant hand helps to stabilize fragile or rolling veins, making them less likely to move during needle insertion and reducing the risk of collapse.
Why the other options are wrong
- A. A deeper puncture increases the risk of hitting nerves or arteries and is not a recommended technique for rolling veins; proper anchoring is key.
- C. A larger gauge needle increases the risk of vein damage and collapse in fragile veins; smaller gauges (e.g., 22G-23G) are preferred.
- D. A tight, prolonged tourniquet can increase pressure and risk hematoma or vein collapse, especially in fragile veins.
Vein Stabilization
The technique of securing a vein to prevent it from rolling or collapsing during venipuncture, crucial for successful blood collection, especially in patients with fragile or mobile veins.
- Use the thumb of the non-dominant hand to pull skin taut.
- Anchor below the intended puncture site.
- Prevents vein movement during needle insertion.
- Essential for elderly patients or those with small, superficial veins.
Memory trick: FRAGILE Veins: Firmly Anchor, Gently Release, Avoid Large Gauge, Inspect Easily.