ATI LPN
Pharmacology for LPN
1. When providing teaching to a client with a new prescription for atorvastatin, which of the following instructions should the nurse include?
- A. Take the medication in the evening.
- B. Take the medication with food.
- C. Increase your intake of grapefruit juice.
- D. Avoid consuming dairy products.
Correct answer: A
Rationale: The correct instruction for a client with a new prescription for atorvastatin is to take the medication in the evening. Atorvastatin is more effective when taken at night because cholesterol synthesis is higher during this time. This timing helps optimize the drug's cholesterol-lowering effects and enhances its overall efficacy in managing lipid levels. Choices B, C, and D are incorrect. Taking atorvastatin with food can decrease its absorption, grapefruit juice can interact with atorvastatin leading to increased side effects, and there is no specific need to avoid dairy products while on atorvastatin unless instructed otherwise by the healthcare provider.
2. A client has a new prescription for isoniazid. Which of the following instructions should the nurse include?
- A. Take the medication on an empty stomach.
- B. Avoid drinking alcohol.
- C. Take the medication with an antacid.
- D. Increase your intake of leafy green vegetables.
Correct answer: B
Rationale: The correct answer is to instruct the client to avoid drinking alcohol. Isoniazid can cause liver damage, and alcohol consumption can increase this risk. Therefore, it is crucial to avoid alcohol while taking isoniazid to prevent potential liver complications. Choice A is incorrect because isoniazid is typically taken with food to reduce gastrointestinal upset. Choice C is incorrect because antacids can decrease the absorption of isoniazid. Choice D is incorrect as there is no specific recommendation to increase leafy green vegetable intake when taking isoniazid.
3. A client has a new prescription for verapamil. Which of the following instructions should the nurse include?
- A. Monitor your heart rate daily.
- B. Take the medication at bedtime.
- C. Avoid consuming grapefruit juice.
- D. Take the medication with food.
Correct answer: A
Rationale: The correct answer is to instruct the client to monitor their heart rate daily when taking verapamil. Verapamil is a calcium channel blocker that can cause bradycardia, making it crucial to monitor the heart rate regularly to detect any changes promptly. Choice B, taking the medication at bedtime, is not specifically related to verapamil administration. Choice C, avoiding grapefruit juice, is more relevant to medications metabolized by CYP3A4 enzymes, not verapamil. Choice D, taking the medication with food, is not a specific instruction for verapamil, as it can be taken with or without food.
4. Before administering a calcium channel blocker to a client with hypertension, what parameter should the nurse check?
- A. Serum calcium level
- B. Apical pulse
- C. Blood pressure
- D. Respiratory rate
Correct answer: C
Rationale: Before administering a calcium channel blocker to a client with hypertension, the nurse should check the client's blood pressure. Calcium channel blockers are prescribed to lower blood pressure, so it is essential to assess the current blood pressure to ensure safe administration and monitor the medication's effectiveness. Checking the serum calcium level (Choice A) is not necessary before administering a calcium channel blocker, as it does not directly impact the drug's action. Monitoring the apical pulse (Choice B) is important for other types of medications like beta-blockers, not specifically for calcium channel blockers. Assessing the respiratory rate (Choice D) is not directly related to administering calcium channel blockers for hypertension.
5. 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.
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