ASCP Phlebotomy Technician Certification Practice Exam 2025 - Free Phlebotomy Practice Questions and Study Guide

When a hematoma begins to form during a venipuncture, the appropriate action is to discontinue the procedure and apply pressure with gauze. Hematomas occur when blood leaks out of the vein into the surrounding tissue, often due to the needle puncturing through the vein or not being correctly positioned within it.

Discontinuing the procedure immediately prevents further bleeding and helps minimize the size of the hematoma. Applying pressure with gauze over the site helps to control any bleeding that may have occurred and encourages the blood to clot in the area. This not only assists in reducing swelling but also aids in the healing process.

Using heat on the area, continuing to draw blood, or switching to a smaller gauge needle would not address the issue at hand. Heat might increase blood flow and exacerbate the situation, while continuing the blood draw could lead to further bleeding and an increased hematoma size. Using a smaller gauge needle could also potentially complicate matters if the vein is already compromised.