Final answer:
To ensure the safety of an infant with RSV, the nurse should have a designated stethoscope in the infant's room to prevent the spread of infection.
Step-by-step explanation:
A nurse caring for an infant with Respiratory Syncytial Virus (RSV) should ensure the safety of the infant by adhering to strict infection control practices. Among the provided options, having a designated stethoscope in the infant's room is a key preventive measure to contain the infection and prevent it from spreading to other patients and healthcare staff. While palivizumab may be prescribed for RSV prophylaxis in certain high-risk infants, the question specifically asks about ensuring the safety of an infant who already has RSV. Negative airflow rooms are more commonly associated with airborne pathogens like tuberculosis, rather than with RSV which is spread by large droplets, and removal of gloves should occur as soon as the nurse exits the infectious area, which would include the patient's room, to avoid contamination of other surfaces.