A patient at risk of developing deep vein thrombosis has been prescribed warfarin sodium (Coumadin) to be taken daily. The patient also complains of occasional pain to the legs. The nurse should instruct the patient to:
A) Monitor blood pressure weekly.
B) Observe for signs and symptoms of infection.
C) Report for regular blood studies of international normalized ratio (INR) levels.
D) Use aspirin for the pain.
Ans: C
Feedback: INR levels help regulate the dosage of Coumadin. Aspirin potentiates oral anticoagulants. The patient should be instructed to avoid taking aspirin because bleeding can occur. Assessing blood pressure and assessing for infection are not necessary.
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