Question 76

23 gauge needles are appropriate for venipuncture with a winged infusion set and a 5 mL syringe.

Using a 23 gauge needle strikes a balance between sufficient blood flow and minimal discomfort for the patient, making it ideal for venipuncture in this context.

A) 23 gauge

This option is correct because a 23 gauge needle is specifically designed for drawing blood with minimal discomfort while allowing for adequate flow. It is commonly recommended for use with winged infusion sets and syringes, making it suitable for the procedure described.

B) 18 gauge

An 18 gauge needle is too large for routine venipuncture in most patients. While it allows for rapid blood flow, it can cause unnecessary pain and trauma to the vein, making it an inappropriate choice for this particular procedure.

C) 25 gauge

A 25 gauge needle is too small for venipuncture when using a 5 mL syringe, as it would significantly slow down the blood flow. This could lead to difficulties in obtaining an adequate sample and could increase the risk of hemolysis, making it unsuitable for this context.

D) 27 gauge

Similar to the 25 gauge option, a 27 gauge needle is also too small for effective blood collection using a 5 mL syringe. The reduced lumen size could result in increased resistance and slow blood flow, complicating the venipuncture process.

Conclusion

The 23 gauge needle is the optimal choice for venipuncture using a winged infusion set and a 5 mL syringe due to its suitable size that balances patient comfort and effective blood flow. Options B, C, and D are either too large or too small, which can lead to complications or discomfort during the procedure. Thus, the 23 gauge needle stands out as the definitive answer.