Which antihistamine is administered intravenously (V) when a blood transfusion reaction causes pruritus?

A. Treatment for acute myocardial infarction: Apixaban is an oral anticoagulant used to prevent clot formation. It is not indicated as a primary treatment for acute myocardial infarction, although it may be used in certain patients with atrial fibrillation or thromboembolic risk.

B. Prevention of pulmonary embolism: Apixaban is indicated for the prevention and treatment of venous thromboembolism, including deep vein thrombosis and pulmonary embolism. It inhibits factor Xa, reducing the formation of blood clots in high-risk patients.

C. Treatment for chronic hypertension: Apixaban does not lower blood pressure and is not used to treat hypertension. Its anticoagulant effect targets clotting pathways rather than vascular resistance.

D. Prevention of renal failure: Apixaban has no direct effect on kidney function and is not used to prevent renal failure. Its role is limited to anticoagulation and reducing thromboembolic events.

A. Regular laboratory monitoring is required: Warfarin therapy necessitates frequent monitoring of the international normalized ratio (INR) to ensure therapeutic anticoagulation and to prevent bleeding or clotting complications.

B. Inject this drug subcutaneously in the abdomen: Warfarin is administered orally, not via injection. Teaching injection techniques is not applicable and could cause confusion or medication errors.

C. Avoid medications containing aspirin: Aspirin and other NSAIDs can increase the risk of bleeding when taken with warfarin due to additive antiplatelet effects. Clients should be educated to avoid these medications unless approved by their healthcare provider.

D. Report heavy menstrual bleeding to the provider: Heavy or unusual bleeding is a potential sign of warfarin over-anticoagulation. Clients should be instructed to report such symptoms promptly for assessment and possible dosage adjustment.

E. There are no dietary interactions with warfarin: Warfarin interacts with foods high in vitamin K (e.g., leafy greens), which can affect its effectiveness. Clients should be educated on maintaining consistent dietary vitamin K intake rather than assuming no dietary interactions exist.