Final answer:
An elastic bandage is applied over an arterial puncture site to create pressure, control bleeding, and provide support to the wound.
Step-by-step explanation:
An elastic bandage is applied over an arterial puncture site for several reasons. One of the main reasons is to create pressure on the site. The pressure exerted by the bandage helps to control bleeding by compressing the blood vessels and reducing blood flow from the puncture site. Additionally, the bandage provides support to the wound, helping to stabilize the area and promote healing.