Question 10

A phlebotomist should use a 23-gauge needle for a venipuncture using a winged infusion set and a 5 mL syringe.

The 23-gauge needle is appropriate for venipuncture because it is a suitable size that balances ease of blood flow with patient comfort, particularly when working with a small volume like a 5 mL syringe.

A) 23-gauge

This option is correct as a 23-gauge needle provides an adequate lumen for the efficient collection of blood while minimizing discomfort for the patient. It is commonly used in phlebotomy procedures involving syringes, especially for smaller volumes.

B) 18-gauge

An 18-gauge needle is too large for typical venipuncture procedures involving a 5 mL syringe. While it allows for rapid blood flow, it can cause unnecessary discomfort and is generally reserved for larger volume blood draws or intravenous access.

C) 25-gauge

A 25-gauge needle is too small for effective venipuncture when using a syringe for blood collection. Although it may cause less discomfort, it can lead to prolonged draw times and insufficient blood flow, making it unsuitable for this purpose.

D) 27-gauge

Similar to the 25-gauge, a 27-gauge needle is also too small for efficient blood collection with a syringe. It is likely to result in a slower draw and may not adequately fill a 5 mL syringe, making it impractical for standard venipuncture.

Conclusion

The 23-gauge needle is the optimal choice for performing venipuncture with a winged infusion set and a 5 mL syringe, as it ensures a balance of comfort and efficiency. In contrast, the other options—18-gauge, 25-gauge, and 27-gauge—are either too large or too small, leading to potential complications in the blood draw process.