Step-by-step explanation:
a. Aspirin
The nurse should report the client's history of taking aspirin to the provider when they have a new prescription for warfarin. Aspirin is an antiplatelet medication that can increase the risk of bleeding when used together with warfarin, which is an anticoagulant. Both medications can affect the blood's ability to clot, and combining them may potentiate the anticoagulant effects and increase the risk of bleeding complications. The provider may need to adjust the dosage or closely monitor the client's coagulation parameters when aspirin and warfarin are used concurrently.
Digoxin (b), enalapril (c), and hydrochlorothiazide (d) do not directly interact with warfarin in a way that significantly increases the risk of bleeding. However, it is important for the nurse to report the client's complete medication history to the provider to ensure appropriate monitoring and management of any potential drug interactions or adverse effects.