Final answer:
The nurse instructs the patient not to take digoxin with bananas.
Step-by-step explanation:
When teaching a patient regarding the administration of digoxin (Lanoxin), the nurse instructs the patient not to take this medication with bananas. Digoxin is a medication used to treat heart failure and certain types of irregular heart rhythms. Bananas are high in potassium, and taking digoxin with high amounts of potassium can increase the risk of a potentially dangerous condition called hyperkalemia.