What complication might result from excessive puncture site pressure post-arterial draw?

Excessive puncture site pressure following an arterial draw can lead to the formation of a hematoma. A hematoma occurs when blood leaks out of the artery and into surrounding tissues due to a break in the vascular integrity, often exacerbated by excessive pressure.

When post-draw pressure is applied too forcefully, it can disrupt the normal clotting process and prevent proper hemostasis, which allows blood to accumulate in the surrounding tissue, causing swelling and discoloration. A hematoma may not only be painful but can also delay recovery and complicate further procedures.

Other potential complications, such as reduced blood flow, infection risk, and nerve damage, relate to different issues. For example, nerve damage is more likely related to improper technique during the draw itself rather than from post-procedure pressure. Understanding that the most direct consequence of improper application of pressure at the puncture site is the hematoma helps in preventing this common complication.