A nurse is caring for a school-age child who has heart failure. Which of the following interventions should the nurse implement?

A. Ensure that the child sleeps in an air-conditioned room: While a cool and comfortable environment may reduce stress and promote rest, air conditioning alone does not address the management of heart failure. It is supportive but not a priority nursing intervention. B. Avoid giving the child live virus vaccines: Live virus vaccines are typically avoided in immunocompromised clients or those on immunosuppressive therapy, not specifically for stable pediatric heart failure. C. Weigh the child every other day: Children with heart failure are at risk for fluid retention, and daily weights provide the accurate and timely assessment of fluid status. Weighing every other day could delay the identification of fluid overload and compromise early intervention. D. Consolidate activities to promote the child's rest: Children with heart failure often experience fatigue due to decreased cardiac output. Organizing care to allow longer rest periods helps reduce cardiac workload and conserves energy.