Final answer:
Patients on Coumadin after knee replacement should monitor urine for signs of blood and stay hydrated.
Step-by-step explanation:
Patients who are on Coumadin after total knee replacement surgery should be instructed by the nurse about monitoring their urine for any signs of blood. Coumadin is an anticoagulant medication that prevents excessive blood clotting, but it can increase the risk of bleeding. Urine that appears red or pinkish in color may indicate bleeding, and patients should report this to their healthcare provider immediately.
Additionally, the nurse should advise the patient to stay hydrated by drinking enough fluids to prevent dehydration, as concentrated urine can increase the risk of developing blood clots. It's also important for the patient to follow the prescribed dosage of Coumadin and have regular blood tests to monitor the medication's effect on their blood clotting ability.