ATI LPN
LPN Pharmacology Questions
1. A client has a new prescription for phenytoin. Which of the following instructions should the nurse include?
- A. Take the medication with a full glass of water.
- B. Avoid consuming dairy products.
- C. Take the medication on an empty stomach.
- D. Expect a metallic taste in your mouth.
Correct answer: B
Rationale: The correct instruction for a client prescribed phenytoin is to avoid consuming dairy products. Dairy products can reduce the absorption of phenytoin. Taking the medication with a full glass of water (Choice A) is generally a good practice for oral medications but is not specifically required for phenytoin. Taking the medication on an empty stomach (Choice C) can lead to gastrointestinal upset, so it is not recommended for phenytoin. Expecting a metallic taste in the mouth (Choice D) is a possible side effect of phenytoin but is not a crucial instruction for the client to follow.
2. A nurse is assessing a client who has been taking lithium carbonate. Which of the following findings should the nurse report to the provider?
- A. Increased urination
- B. Tremors
- C. Weight gain
- D. Blurred vision
Correct answer: B
Rationale: The correct answer is B: Tremors. Tremors are a sign of lithium toxicity and should be reported immediately. Increased urination is a common side effect of lithium but not an urgent concern requiring immediate reporting. Weight gain is also a common side effect of lithium but does not indicate toxicity. Blurred vision is not typically associated with lithium toxicity; therefore, it is not the priority finding to report.
3. Which laboratory test should be monitored to evaluate the effectiveness of anticoagulant therapy in a client with deep vein thrombosis (DVT)?
- 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 laboratory test monitored to evaluate the effectiveness of anticoagulant therapy, particularly with heparin. It measures the time it takes for blood to clot, and monitoring aPTT helps ensure the therapeutic range is maintained to prevent clot formation and excessive bleeding. Choices A, C, and D are incorrect because a complete blood count (CBC) assesses overall health, serum electrolytes evaluate the body's electrolyte balance, and liver function tests assess liver health, none of which directly evaluate the effectiveness of anticoagulant therapy for DVT.
4. The client has angina pectoris and is prescribed nitroglycerin patches. What instruction should the nurse provide to the client?
- A. Apply the patch to the chest and leave it in place for 24 hours
- B. Apply the patch to a different site each time to prevent skin irritation
- C. Remove the patch before going to bed to prevent tolerance
- D. Cut the patch in half if experiencing headaches
Correct answer: B
Rationale: The correct instruction for the nurse to provide to the client is to apply the nitroglycerin patch to a different site each time to prevent skin irritation. Rotating the application site is crucial to prevent skin irritation and ensure consistent absorption of the medication. Applying the patch to the same site can lead to skin irritation and decreased effectiveness. Removing the patch before going to bed is not necessary, as the patch can typically be worn for a specific duration. Cutting the patch in half if experiencing headaches is not recommended and can alter the dose of the medication.
5. The healthcare provider is monitoring a client with chronic stable angina. Which symptom would indicate that the client's condition is worsening?
- A. Increased shortness of breath with exertion
- B. Improved tolerance to activity
- C. Decreased frequency of chest pain
- D. Stable blood pressure readings
Correct answer: A
Rationale: Increased shortness of breath with exertion is a concerning symptom in a client with chronic stable angina as it may indicate inadequate oxygen supply to the heart muscle, suggesting a worsening condition. This could be a sign of reduced blood flow to the heart, leading to increased work for the heart during exertion, resulting in increased shortness of breath. Choice B, improved tolerance to activity, is incorrect as it would indicate a positive response to treatment. Choice C, decreased frequency of chest pain, is incorrect as it would also suggest an improvement in the client's condition. Choice D, stable blood pressure readings, are not indicative of a worsening condition in chronic stable angina.
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