Which type of dressing is primarily used to prevent contamination of a wound?

Sterile gauze pads are specifically designed for use on wounds to prevent contamination. The primary function of these pads is to create a barrier that protects the open wound from any foreign materials, bacteria, or other pathogens present in the environment. This protection is crucial in preventing infections, which can complicate the healing process and lead to further medical issues.

Additionally, sterile gauze pads are made from materials that are free of microorganisms at the time of packaging, ensuring that when they are applied to a wound, they don't introduce any new sources of infection. This inherent sterility is why they are favored in wound care.

In contrast, while a pressure bandage might be used to control bleeding, its primary function is not solely to prevent contamination. Surgical tape serves to secure dressings in place but does not itself provide a barrier against contamination. Antiseptic wipes are used for cleaning the area around the wound before a dressing is applied, but they don't serve as a dressing and thus do not directly prevent contamination of a wound once it is exposed.