What is the recommended angle for puncturing an artery?

The recommended angle for puncturing an artery is 90 degrees. This angle is ideal because it allows the needle to enter the vessel directly, minimizing the risk of damaging surrounding tissues and improving the chances of accessing the lumen of the artery effectively. When the needle is inserted straight into the artery, it is more likely to facilitate blood flow into the collection device, enhancing both the efficiency and safety of the procedure.

Using a higher angle, such as 60 or 75 degrees, can increase the risk of missing the artery or causing unnecessary trauma to the vessel wall. Lower angles, such as 45 degrees, also risk not adequately penetrating the artery, which can lead to complications such as hematoma formation or incomplete draws. Therefore, a 90-degree angle is preferred to achieve optimal results while minimizing risks.