What is the recommended technique to prevent hematoma formation during venipuncture?

The recommended technique to prevent hematoma formation during venipuncture is to apply pressure after needle withdrawal. This practice helps to ensure that blood does not leak into the surrounding tissue when the needle is removed from the vein. By applying firm pressure directly at the site, you encourage the blood vessels to constrict and minimize the potential for bleeding, which can result in a hematoma.

Maintaining pressure at the site is particularly crucial because even a small amount of blood that escapes into the tissue can lead to a collection of blood, or hematoma, which may cause swelling and discomfort for the patient. Once the needle has been withdrawn, the immediate application of pressure helps to seal the puncture site effectively.

In contrast, using a larger needle does not inherently prevent hematoma formation; it may even increase discomfort for the patient or cause other complications. While maintaining blood pressure at the site is not directly related to the practice of venipuncture, drawing blood quickly may lead to carelessness and can increase the risk of complications, including hematomas, if not done properly.