ATI LPN
LPN Pharmacology Practice Test
1. A client has been taking levothyroxine for 6 months. Which of the following findings indicates that the medication is effective?
- A. Weight gain
- B. Increased heart rate
- C. Decreased TSH levels
- D. Elevated blood pressure
Correct answer: C
Rationale: In a client taking levothyroxine for thyroid hormone replacement, decreased TSH levels indicate that the medication is effective. TSH levels decrease as the thyroid hormone levels are adequately replaced by levothyroxine, signaling a positive response to treatment. Choices A, B, and D are incorrect because weight gain, increased heart rate, and elevated blood pressure are not expected findings indicating the effectiveness of levothyroxine therapy. Weight gain may suggest inadequate dosing, while increased heart rate and elevated blood pressure could indicate over-replacement or side effects of the medication.
2. The healthcare provider is evaluating the effects of care for a client with deep vein thrombosis (DVT). Which limb observations should the provider note as indicating the least success in meeting the outcome criteria for this problem?
- A. Pedal edema that is 3+
- B. Slight residual calf tenderness
- C. Skin warm, equal temperature in both legs
- D. Calf girth 1/8 inch larger than the unaffected limb
Correct answer: A
Rationale: Significant pedal edema, indicated by 3+, suggests ongoing or worsening venous insufficiency. This can be a sign that the care provided has not been effective in managing the deep vein thrombosis (DVT) and the associated complications. Monitoring and addressing pedal edema is crucial in the evaluation of DVT treatment outcomes and overall patient care. Choices B, C, and D are not indicative of the least success in meeting the outcome criteria for DVT. Slight residual calf tenderness, skin warmth, and a slightly larger calf girth do not necessarily point towards treatment failure or lack of improvement in DVT management.
3. A client with heart failure is being discharged with a prescription for digoxin (Lanoxin). The nurse should include which instruction in the discharge teaching?
- A. Take your pulse before each dose and hold the medication if your pulse is below 60 beats per minute
- B. Increase your fluid intake to at least 3 liters per day
- C. Report any weight loss of more than 2 pounds in a week
- D. Take the medication with meals to avoid gastrointestinal upset
Correct answer: A
Rationale: The correct instruction for a client taking digoxin is to monitor the pulse before each dose and hold the medication if the pulse is below 60 beats per minute. Digoxin can cause bradycardia, so it is crucial to assess the pulse rate before administration to prevent potential complications. Choices B, C, and D are incorrect because increasing fluid intake, reporting weight loss, or taking the medication with meals are not specific instructions related to the safe use of digoxin.
4. When teaching a client who has a new prescription for metformin, which of the following instructions should the nurse include?
- A. Take the medication with food.
- B. Monitor for signs of hyperglycemia.
- C. Increase your fluid intake.
- D. Expect a metallic taste in your mouth.
Correct answer: C
Rationale: The correct instruction for a client starting metformin is to increase fluid intake. This is crucial to prevent gastrointestinal discomfort, a common side effect of metformin. Adequate hydration helps reduce the risk of gastrointestinal upset and ensures the medication is well-tolerated. Option A is generally true for metformin but is not as essential as maintaining proper hydration. Option B is important but not directly related to starting metformin. Option D is incorrect as a metallic taste in the mouth is not typically associated with metformin.
5. The nurse is assisting in the care of a client experiencing an acute myocardial infarction (MI). Which medication would the nurse expect to be administered to help reduce myocardial oxygen demand?
- A. Aspirin
- B. Morphine
- C. Atropine
- D. Lidocaine
Correct answer: B
Rationale: In the context of an acute myocardial infarction (MI), morphine is administered to relieve pain and reduce myocardial oxygen demand. By alleviating pain and anxiety, morphine helps reduce oxygen demand on the heart, which is beneficial in the setting of an MI. Aspirin, commonly used for its antiplatelet effects, helps inhibit platelet aggregation and is crucial in the management of MI to prevent further clot formation. Atropine is a medication used to treat symptomatic bradycardia by increasing heart rate, not commonly indicated in the management of acute MI. Lidocaine is used for ventricular dysrhythmias and is not typically given to reduce myocardial oxygen demand in an acute MI scenario.
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