Which statement is true regarding universal precautions?

Wearing gowns if exposed skin or clothing is likely to be soiled is a central aspect of universal precautions. Universal precautions are a set of guidelines designed to prevent the transmission of bloodborne pathogens and other infectious materials. These guidelines emphasize the importance of protecting one's body, especially when there's a risk of contamination from bodily fluids. Gowns are an essential part of personal protective equipment (PPE) in scenarios where there's a possibility of splashes or spills that could soil skin or clothing, thereby safeguarding the wearer from potential exposure to infectious agents.

The other choices do not accurately represent the principles of universal precautions. For instance, wearing gloves is recommended not only when dealing with blood but also when handling any potentially infectious materials. Masks are not limited to surgical procedures; they are advised in various situations where there is a risk of airborne transmission. Handwashing is a critical practice that should occur both before and after patient contact, not just after, to effectively reduce the risk of spreading infections.