What Does the Nurse Teach the Patient and Caregiver to Do

What does the nurse teach the patient and caregiver to do when setting up and changing administration sets for continuous tube feedings to preserve medical asepsis?

A) Add formula to formula already hung to prevent waste.
B) Store unused formula at room temperature to prevent spasm.
C) Hang only enough formula that will be infused in a 4- to 6-hour period.
D) Change the administration set every 48 hours.