What should always be done to prevent infection after venipuncture?

Applying a bandage after venipuncture is crucial for preventing infection. Once the needle is withdrawn, a bandage serves as a protective barrier against pathogens that could enter the puncture site. It helps to keep the area clean and provides pressure to minimize bleeding.

In addition, a bandage aids in securing any gauze or cotton that may have been placed over the site, further enhancing the protection. It is not only a physical barrier but also a psychological reassurance to the patient that their wound is being treated properly, which can contribute to their comfort and overall experience.

While disinfecting the area prior to the venipuncture is important to prevent infection, it doesn't apply to the post-procedural care. Ensuring the patient rests and informing them can also be beneficial, but they do not directly address the immediate need to prevent infection at the puncture site after blood collection. Thus, using a bandage is the best practice for maintaining the integrity of the insertion point and minimizing the risk of infection.