ATI LPN
LPN Pharmacology
1. The client is receiving intravenous heparin for the treatment of a pulmonary embolism. Which medication should the nurse ensure is readily available?
- A. Protamine sulfate
- B. Vitamin K
- C. Calcium gluconate
- D. Magnesium sulfate
Correct answer: A
Rationale: Protamine sulfate is the antidote for heparin, used to reverse its anticoagulant effects. It should be readily available in case of bleeding complications, as it can rapidly neutralize the effects of heparin and prevent excessive bleeding. Vitamin K is used to reverse the effects of warfarin, not heparin (Choice B). Calcium gluconate is used to treat calcium deficiencies, not indicated for heparin therapy (Choice C). Magnesium sulfate is used for conditions like preeclampsia and eclampsia, not for reversing heparin effects (Choice D).
2. The nurse is caring for a client receiving anticoagulant therapy. Which instruction should the nurse reinforce with the client to prevent bleeding complications?
- A. Use a soft-bristle toothbrush and electric razor.
- B. Increase your intake of vitamin K-rich foods.
- C. Take aspirin if you have a headache.
- D. Avoid using ice packs for injuries.
Correct answer: A
Rationale: The correct instruction to prevent bleeding complications in a client on anticoagulant therapy is to use a soft-bristle toothbrush and an electric razor. These implements help reduce the risk of bleeding by being gentle on the skin and reducing the chances of cuts or abrasions that could lead to bleeding in individuals on anticoagulants. Choice B is incorrect because increasing intake of vitamin K-rich foods can interfere with the action of anticoagulants. Choice C is incorrect as aspirin is a blood thinner and can increase the risk of bleeding when combined with anticoagulant therapy. Choice D is incorrect as ice packs can help reduce bleeding and swelling in injuries, but in a client on anticoagulant therapy, it is important to avoid potential trauma to the skin that could lead to bleeding.
3. The client with atrial fibrillation is receiving warfarin (Coumadin). Which laboratory test should be monitored to determine the effectiveness of the therapy?
- A. Prothrombin time (PT) and international normalized ratio (INR)
- B. Activated partial thromboplastin time (aPTT)
- C. Complete blood count (CBC)
- D. Fibrinogen level
Correct answer: A
Rationale: Monitoring Prothrombin time (PT) and international normalized ratio (INR) is crucial when a client is on warfarin therapy. These tests assess the clotting ability of the blood and help determine the appropriate dosage of warfarin to prevent complications such as bleeding or clotting events. PT and INR values within the therapeutic range indicate the effectiveness of warfarin in managing atrial fibrillation. Choice B, activated partial thromboplastin time (aPTT), is not typically used to monitor warfarin therapy; it is more commonly used to assess the effectiveness of heparin therapy. Choice C, complete blood count (CBC), does not directly assess the anticoagulant effect of warfarin. Choice D, fibrinogen level, is not a primary test for monitoring warfarin therapy; it is more relevant in assessing conditions like disseminated intravascular coagulation.
4. A client has a new prescription for heparin. Which of the following laboratory results should be monitored to evaluate the effectiveness of the medication?
- A. Prothrombin time (PT)
- B. International normalized ratio (INR)
- C. Activated partial thromboplastin time (aPTT)
- D. Platelet count
Correct answer: C
Rationale: Activated partial thromboplastin time (aPTT) is the laboratory result that should be monitored to evaluate the effectiveness of heparin. Heparin works by prolonging the aPTT, and monitoring this parameter helps ensure the medication's effectiveness and safety in preventing clot formation. Prothrombin time (PT) and International normalized ratio (INR) are used to monitor the effectiveness of warfarin, another anticoagulant. Platelet count is essential to assess platelet function and clotting disorders, but it is not specifically used to monitor heparin therapy.
5. A client in the emergency department is bleeding profusely from a gunshot wound to the abdomen. In what position should the nurse immediately place the client to promote maintenance of the client's blood pressure above a systolic pressure of 90 mm Hg?
- A. Place the client in a 45-degree Trendelenburg position to promote cerebral blood flow.
- B. Turn the client prone to apply pressure on the abdominal wound to help staunch the bleeding.
- C. Maintain the client in a supine position to reduce diaphragmatic pressure and visualize the wound.
- D. Put the client on the right side to apply pressure to the liver and spleen to stop hemorrhaging.
Correct answer: C
Rationale: In a client with profuse bleeding from a gunshot wound to the abdomen, maintaining the client in a supine position is essential to manage blood pressure. This position helps in reducing diaphragmatic pressure and allows for proper visualization of the wound, aiding in prompt assessment and intervention to control the bleeding and stabilize the client's condition. Placing the client in a 45-degree Trendelenburg position (Choice A) could worsen the bleeding by increasing intrathoracic pressure and venous return, potentially leading to further hemorrhage. Turning the client prone (Choice B) may not be feasible in this situation and can delay essential interventions. Placing the client on the right side (Choice D) does not address the immediate need to manage the bleeding and stabilize the client's condition.
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