What is the potential complication of a phlebotomy procedure?

Hematoma formation is a recognized potential complication of a phlebotomy procedure. This occurs when blood leaks out of a blood vessel and collects in the surrounding tissue, forming a localized swelling or bruise. The risk of hematoma can increase due to multiple factors, such as improper technique, using a needle that is too large for the vein, or failure to apply sufficient pressure after withdrawal. Hematomas are generally not serious and often resolve on their own, but they can cause discomfort and may complicate further venipuncture.

Understanding hematoma formation is crucial for phlebotomy technicians as it emphasizes the importance of proper technique and patient care during and after the venipuncture process. The other choices listed do not typically relate to complications that arise directly from phlebotomy procedures, making hematoma the most relevant answer in this context.