What is the standard angle for inserting a butterfly needle?

The standard angle for inserting a butterfly needle is 15 degrees. This angle is recommended because it helps to ensure proper penetration of the needle into the vein while minimizing damage to surrounding tissues. Inserting at this angle aids technicians in gaining access to the vasculature effectively, as it aligns well with the orientation and depth of most veins, allowing for a better chance of successful venous access.

When inserting a butterfly needle, it is important to be aware of the anatomy of the targeted vein and the technique required to hold the needle steady. A 15-degree angle strikes a balance between being too shallow, which may cause the needle to slip out of the vein, and being too steep, which can increase the risk of causing trauma to the vessel and surrounding structures. Additionally, this angle allows for a smooth insertion and eases the process of drawing blood or administering medications.