In the care of a post-operative resident in a long-term care facility, which priority action should the nurse take to prevent surgical-site infections (SSIs)?

Rationale: A. This is incorrect as the priority. Early ambulation is important for preventing complications such as venous thromboembolism, pneumonia, and constipation, but it does not directly prevent microorganisms from entering the surgical incision. B. Adequate rest supports healing and immune function, but it is a supportive measure and does not directly reduce the risk of surgical-site contamination or infection. C. This is incorrect as the priority. Protein is essential for wound healing and tissue repair, but nutritional interventions alone cannot prevent infection if proper infection control measures are not followed. D. This is correct. Maintaining aseptic (sterile) technique during dressing changes is the most effective and immediate action to prevent surgical-site infections. Proper hand hygiene, use of sterile supplies, and avoidance of contamination directly reduce the risk of introducing pathogens into the surgical wound.