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 nurse is caring for a client who has undergone a coronary artery bypass graft (CABG) surgery. Which action should the nurse take to prevent postoperative complications?
- A. Encourage the client to cough and deep breathe every 1 to 2 hours.
- B. Maintain the client in a supine position at all times.
- C. Keep the client on bed rest for the first 48 hours.
- D. Restrict the client's fluid intake to prevent overload.
Correct answer: A
Rationale: Encouraging the client to cough and deep breathe every 1 to 2 hours is crucial post-CABG surgery to prevent respiratory complications, such as atelectasis and pneumonia. These actions help to expand lung volume, clear secretions, and prevent the collapse of alveoli. Choices B, C, and D are incorrect because maintaining the client in a supine position at all times can lead to complications like decreased lung expansion, keeping the client on bed rest for the first 48 hours may increase the risk of thromboembolism, and restricting fluid intake postoperatively can lead to dehydration and electrolyte imbalances.
3. A healthcare professional is assessing a client who has been taking digoxin. Which of the following findings should the healthcare professional report to the provider?
- A. Weight gain
- B. Dry cough
- C. Hypokalemia
- D. Bradycardia
Correct answer: D
Rationale: The correct answer is D: Bradycardia. Bradycardia is a significant finding associated with digoxin toxicity. Digoxin, a medication commonly used to treat heart conditions, can lead to bradycardia as a sign of toxicity. Bradycardia requires immediate attention and reporting to the healthcare provider for further evaluation and management to prevent serious complications. Choices A, B, and C are incorrect because weight gain, dry cough, and hypokalemia are not specific signs of digoxin toxicity. While weight gain can be a side effect of digoxin, it is not a classic sign of toxicity. Dry cough is more commonly associated with medications like ACE inhibitors, and hypokalemia can be a complication of digoxin therapy but is not a direct sign of toxicity.
4. A client with heart failure is prescribed furosemide (Lasix). The nurse should monitor the client for which potential electrolyte imbalance?
- A. Hyperkalemia
- B. Hypernatremia
- C. Hypokalemia
- D. Hypocalcemia
Correct answer: C
Rationale: When a client with heart failure is prescribed furosemide, the nurse should monitor for hypokalemia. Furosemide is a loop diuretic that can lead to potassium loss, which increases the risk of hypokalemia. Hypokalemia can have serious implications such as cardiac dysrhythmias. Therefore, it is essential to closely monitor the client's serum potassium levels while on furosemide to prevent complications. Hyperkalemia (Choice A) is incorrect because furosemide leads to potassium loss, not retention. Hypernatremia (Choice B) is not typically associated with furosemide use. Hypocalcemia (Choice D) is not a common electrolyte imbalance caused by furosemide.
5. When reinforcing dietary instructions to a client with coronary artery disease prescribed a low-fat, low-cholesterol diet, which food item should the nurse advise the client to choose?
- A. Whole milk
- B. Grilled salmon
- C. Fried chicken
- D. Bacon and eggs
Correct answer: B
Rationale: Grilled salmon is the correct choice for a client with coronary artery disease on a low-fat, low-cholesterol diet because it is low in saturated fat and high in omega-3 fatty acids, which are beneficial for heart health. Whole milk, fried chicken, and bacon and eggs are higher in saturated fats and cholesterol, making them less suitable choices for this client. Whole milk is high in saturated fat, while fried chicken and bacon and eggs are sources of both saturated fat and cholesterol, which can negatively impact heart health in clients with coronary artery disease.
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