Question 34

Hold the needle by the wings of the butterfly.

In venipuncture using a butterfly needle, it is essential for the phlebotomist to hold the needle by the wings to ensure stability and control during the procedure.

A) Position the needle at a 45° angle to the skin.

This option is incorrect because when using a butterfly needle, the angle of insertion is typically lower, around 10 to 15 degrees, to accommodate the shallow depth of the veins in the dorsal hand. A 45° angle would increase the risk of puncturing through the vein.

B) Hold the needle by the wings of the butterfly.

This is the correct action, as holding the needle by the wings provides better control and minimizes the risk of movement during the procedure. This method also facilitates a more comfortable experience for the patient.

C) Instruct the patient to hold the collection tubes.

This option is incorrect as it may lead to contamination or mishandling of the tubes. The phlebotomist should maintain control of the collection tubes to ensure proper technique and sterility.

D) Apply the tourniquet at the antecubital area.

While tourniquets are necessary for venipuncture, applying it at the antecubital area is not appropriate for dorsal hand veins. This could lead to discomfort for the patient and is not relevant to the specific technique required for this site.

Conclusion

Option B is definitively correct because holding the needle by the wings enhances precision and safety during the venipuncture process. Other options either present incorrect techniques or are not suitable for the specific context of using a butterfly needle on dorsal hand veins, making them less effective or even potentially harmful.