NHA Clinical Patient Care Practice Test

The choice of a butterfly needle for drawing blood from small veins is appropriate due to its unique design, which features flexible wings that provide better stability and control during the venipuncture process. This type of needle is particularly beneficial when accessing smaller or more fragile veins, as it causes less trauma to the vessel wall compared to larger gauge needles. Additionally, the narrow gauge of the butterfly needle allows for a smoother flow of blood and can reduce the risk of hemolysis, which may occur with larger needles.

The design of the butterfly needle also allows for easy maneuverability, making it easier for healthcare professionals to position the needle accurately within the small vein. This is crucial in minimizing discomfort for the patient and ensuring successful blood collection.

In contrast, needles such as the standard hypodermic needle may be too large for smaller veins, increasing the risk of complications such as vein rupture or excessive pain for the patient. Similarly, double pointed needles are typically used for various specific medical applications, such as certain types of procedures, rather than routine venipuncture. An insulin syringe, while useful for administering insulin, is not suitable for blood draws due to its small volume and design meant for injections rather than drawing blood.