ATI LPN
LPN Pharmacology Practice Test
1. A healthcare provider is providing discharge teaching to a client who has a new prescription for furosemide. Which of the following statements should the provider include?
- A. Expect muscle pain.
- B. Monitor your weight daily.
- C. Avoid consuming grapefruit juice.
- D. Increase your intake of potassium-rich foods.
Correct answer: D
Rationale: When a client is prescribed furosemide, an important consideration is preventing hypokalemia, a potential side effect of the medication. Furosemide can lead to potassium depletion, so increasing the intake of potassium-rich foods is crucial to maintain adequate potassium levels in the body. Choices A, B, and C are incorrect because muscle pain is not a common side effect of furosemide, monitoring weight daily may not be directly related to the medication, and avoiding grapefruit juice is more relevant for certain medications that interact with grapefruit juice, not furosemide.
2. The nurse is preparing to administer an intravenous dose of furosemide (Lasix) to a client with heart failure. The nurse should monitor for which potential side effect?
- A. Hypertension
- B. Hyperkalemia
- C. Hypokalemia
- D. Hypoglycemia
Correct answer: C
Rationale: Furosemide is a loop diuretic that works by promoting the excretion of water and electrolytes, including potassium. This loss of potassium can lead to hypokalemia, which can be a potential side effect of furosemide administration. Hypokalemia can result in cardiac dysrhythmias and other complications, especially in clients with heart failure who may already have compromised cardiac function. Therefore, monitoring for signs of hypokalemia, such as muscle weakness, cardiac irregularities, and fatigue, is essential when administering furosemide. Choice A, hypertension, is incorrect because furosemide is actually used to treat hypertension by reducing excess fluid in the body. Choice B, hyperkalemia, is incorrect as furosemide causes potassium loss, leading to hypokalemia. Choice D, hypoglycemia, is unrelated to the mechanism of action of furosemide and is not a common side effect associated with its administration.
3. The LPN/LVN is assisting in caring for a client in the telemetry unit and is monitoring the client for cardiac changes indicative of hypokalemia. Which occurrence noted on the cardiac monitor indicates the presence of hypokalemia?
- A. Tall, peaked T waves
- B. ST-segment depression
- C. Prolonged P-R interval
- D. Widening of the QRS complex
Correct answer: B
Rationale: ST-segment depression can indicate hypokalemia, affecting the heart's electrical conduction. Hypokalemia leads to alterations in the repolarization phase of the cardiac action potential, resulting in ST-segment depression on the ECG. Tall, peaked T waves are indicative of hyperkalemia, not hypokalemia. A prolonged P-R interval is more commonly associated with first-degree heart block. Widening of the QRS complex is typically seen in conditions like bundle branch blocks or ventricular tachycardia, not specifically in hypokalemia.
4. A client with a history of 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 discharge teaching regarding digoxin (Lanoxin) is to advise the client to take their pulse before each dose and to hold the medication if their pulse is below 60 beats per minute. Digoxin can cause bradycardia, so monitoring the pulse is crucial to prevent potential complications. Choice B is incorrect because excessive fluid intake can lead to fluid overload, worsening heart failure. Choice C is not directly related to digoxin therapy. Choice D is inaccurate as digoxin is usually taken on an empty stomach to facilitate absorption.
5. The client's B-type natriuretic peptide (BNP) level is 691 pg/mL. Which intervention should the nurse implement when providing care for the client?
- A. Take daily weights and monitor trends.
- B. Encourage fluid intake to improve hydration.
- C. Elevate the legs above the level of the heart.
- D. Position the client supine with the head of the bed at 30 degrees.
Correct answer: A
Rationale: Elevated BNP levels are indicative of heart failure, which often causes fluid retention and weight gain. Taking daily weights and monitoring trends allows the nurse to assess for changes in fluid status. This intervention helps in evaluating the effectiveness of the treatment plan and identifying worsening heart failure symptoms early. Encouraging fluid intake (Choice B) might exacerbate fluid overload in a client with elevated BNP levels. Elevating the legs (Choice C) and positioning the client supine with the head of the bed at 30 degrees (Choice D) are interventions more suitable for clients with hypotension, not specifically indicated for managing elevated BNP levels.
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