ATI LPN
Pharmacology for LPN
1. The client with deep vein thrombosis (DVT) is receiving anticoagulant therapy. Which laboratory test should the nurse monitor to evaluate the effectiveness of the therapy?
- A. Complete blood count (CBC)
- B. Activated partial thromboplastin time (aPTT)
- C. Serum electrolytes
- D. Liver function tests
Correct answer: B
Rationale: Activated partial thromboplastin time (aPTT) is the correct laboratory test to monitor the effectiveness of anticoagulant therapy, especially with heparin. A prolonged aPTT indicates effective anticoagulation, reducing the risk of further clot formation in the client with deep vein thrombosis (DVT). The other options, such as complete blood count (CBC), serum electrolytes, and liver function tests, do not directly assess the therapeutic effectiveness of anticoagulant therapy. Therefore, the correct answer is B.
2. The client is starting therapy with digoxin (Lanoxin). What instruction should the nurse reinforce about the medication?
- A. Take the medication with meals.
- B. Avoid dairy products.
- C. Monitor for yellow or blurred vision.
- D. Increase potassium-rich foods in the diet.
Correct answer: C
Rationale: The correct answer is C: 'Monitor for yellow or blurred vision.' When a client is taking digoxin, it is crucial to monitor for signs of toxicity, such as yellow or blurred vision, as these can indicate an adverse reaction. Reporting these visual disturbances promptly to the healthcare provider is important for further evaluation and management to prevent potential complications. Choices A, B, and D are incorrect because taking digoxin with meals, avoiding dairy products, or increasing potassium-rich foods are not specific instructions related to monitoring for adverse effects of digoxin therapy.
3. When teaching a client about the adverse effects of simvastatin, which of the following findings should be included as an adverse effect?
- A. Tinnitus
- B. Muscle pain
- C. Diarrhea
- D. Facial flushing
Correct answer: B
Rationale: Muscle pain should be included as an adverse effect when teaching a client about simvastatin. It can be a sign of rhabdomyolysis, a severe side effect associated with statins like simvastatin that involves muscle breakdown. Monitoring for muscle pain is crucial to prevent serious complications and ensure timely intervention. Tinnitus, diarrhea, and facial flushing are not typically associated with simvastatin use and are less common adverse effects compared to muscle pain.
4. A client with a history of atrial fibrillation is prescribed warfarin (Coumadin). Which laboratory value should the nurse monitor to assess the effectiveness of the medication?
- A. Activated partial thromboplastin time (aPTT)
- B. Prothrombin time (PT) and international normalized ratio (INR)
- C. Platelet count
- D. Erythrocyte sedimentation rate (ESR)
Correct answer: B
Rationale: Prothrombin time (PT) and international normalized ratio (INR) are the laboratory values used to monitor the effectiveness of warfarin therapy. These values help ensure that the client is within the therapeutic range for anticoagulation. PT measures the time it takes for blood to clot, while INR standardizes PT results to minimize variations between laboratories. Monitoring these values is crucial to prevent complications such as bleeding or clot formation. Activated partial thromboplastin time (aPTT) (Choice A) is more commonly used to monitor heparin therapy. Platelet count (Choice C) assesses the number of platelets in the blood and is not specific to warfarin therapy. Erythrocyte sedimentation rate (ESR) (Choice D) is a non-specific marker of inflammation and is not used to monitor the effectiveness of warfarin therapy.
5. While preparing a client for a cardiac catheterization, the client expresses a preference to speak with their doctor rather than the nurse. Which response by the nurse should be therapeutic?
- A. Your doctor expects me to prepare you for this procedure.
- B. That's fine, if that's what you want. I'll call your health care provider.
- C. So you're saying that you want to talk to your health care provider?
- D. I'm concerned with the way you've dismissed me. I know what I am doing.
Correct answer: C
Rationale: The therapeutic response by the nurse in this situation involves reflecting the client's feelings back to them, which demonstrates active listening and empathy. By restating the client's preference to talk to their doctor, the nurse acknowledges and validates the client's feelings, thereby fostering a positive therapeutic relationship and promoting open communication. Choices A and B do not acknowledge the client's preference and may come off as dismissive. Choice D is confrontational and defensive, which can lead to a breakdown in communication and trust between the nurse and the client.
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