Which anticoagulant medication is mentioned as increasing bleeding risk?

• A. Rivaroxaban (Xarelto)
• B. Aspirin
• C. Acetaminophen
• D. Ibuprofen

Answer: (A)

The main idea is understanding how anticoagulants affect bleeding risk. Rivaroxaban is a direct oral anticoagulant that inhibits Factor Xa, which lowers thrombin production and weakens clot formation. That direct interference with the coagulation cascade makes bleeding risk a primary concern with this medication. The other options aren’t anticoagulants: aspirin is an antiplatelet that can also increase bleeding by impairing platelet function, ibuprofen is an NSAID with bleeding risks mainly from gastric irritation, and acetaminophen has no significant anticoagulant effect. So rivaroxaban is the one that is truly an anticoagulant associated with increased bleeding risk.