A nurse in a coronary care unit is admitting a client who has had CPR following a cardiac arrest. The client is receiving lidocaine IV at 2 mg/min. When the client asks the nurse why he is receiving that medication, the nurse should explain that it has which of the following actions?

Choice A reason: This is incorrect because aspirin is not a suitable medication for preventing venous thromboembolism (VTE) in a client who is postoperative following hip arthroplasty. Aspirin is a nonsteroidal anti-inflammatory drug (NSAID) that has antiplatelet and analgesic effects, but it is not as effective as anticoagulants for VTE prophylaxis.

Choice B reason: This is incorrect because alteplase is not a medication for preventing VTE, but for treating it. Alteplase is a thrombolytic agent that dissolves existing blood clots by activating plasminogen. It is used for acute ischemic stroke, myocardial infarction, and massive pulmonary embolism, but it has a high risk of bleeding and is contraindicated in clients who have had recent surgery.

Choice C reason: This is incorrect because clopidogrel is not a medication for preventing VTE, but for preventing arterial thrombosis. Clopidogrel is an antiplatelet agent that inhibits the adenosine diphosphate (ADP) receptor on platelets, preventing their aggregation. It is used for clients who have had acute coronary syndrome, percutaneous coronary intervention, or ischemic stroke, but it is not effective for VTE prophylaxis.

Choice D reason: This is correct because enoxaparin is a medication for preventing VTE in a client who is postoperative following hip arthroplasty. Enoxaparin is a low molecular weight heparin (LMWH) that inhibits factor Xa and thrombin, preventing the formation of fibrin. It is administered subcutaneously once or twice daily and does not require routine laboratory monitoring. It has a lower risk of bleeding and heparin-induced thrombocytopenia (HIT) than unfractionated heparin.

The correct answer is: D. Apply heat to the knee.

Choice A reason:

Administering low dose aspirin is not appropriate for clients with hemophilia A because aspirin can inhibit platelet function and increase the risk of bleeding. Hemophilia A patients already have a deficiency in clotting factor VIII, and adding aspirin can exacerbate bleeding tendencies.

Choice B reason:

Preparing for an autologous blood transfusion is not a standard treatment for hemarthrosis in hemophilia A. The primary treatment involves factor replacement therapy to address the underlying clotting deficiency. Blood transfusions are generally reserved for severe cases of anemia or significant blood loss.

Choice C reason:

This action is appropriate to assess for gastrointestinal bleeding, which can be a concern in clients with hemophilia due to the risk of spontaneous bleeding. Monitoring for signs of internal bleeding is crucial.

Choice D reason:

Heat application is generally avoided in acute bleeding episodes, as it can increase blood flow and potentially worsen bleeding. Ice is preferred to reduce swelling and pain.