The nurse explains that the body's normal flora serves as:

Choice A rationale

While disposable and clean equipment reduce the risk of infection, sterile technique requires that all organisms are killed or removed from materials to achieve an aseptic environment.

Choice B rationale

Sterile gown, mask, and eye shields are required for surgical procedures, but not necessarily for all sterile techniques, such as catheter insertions or dressing changes.

Choice C rationale

Sterile technique ensures that all organisms are killed or removed, creating an aseptic field and preventing infection.

Choice D rationale

A 10-minute surgical scrub is part of pre-surgical preparation but is not required for all sterile procedures.

Choice A rationale

Using gowns, gloves, and masks for any family contact with the patient is more stringent than necessary for home care. It would not be practical or necessary for family members and may create unnecessary barriers.

Choice B rationale

Maintaining medical asepsis and proper handling of contaminated dressings is essential to prevent the spread of infection. This involves proper hand hygiene, using clean dressings, and disposing of contaminated materials correctly.

Choice C rationale

Washing hands thoroughly before the dressing change is crucial but not enough on its own to prevent the spread of infection. It must be combined with other aseptic techniques.

Choice D rationale

Having the patient be the only person to perform dressing changes does not eliminate the risk of infection to family members, as they may still come into contact with contaminated materials.