ATI LPN
LPN Pharmacology Practice Questions
1. The healthcare provider assesses a client who has been prescribed furosemide (Lasix) for cardiac disease. Which electrocardiographic change would be a concern for a client taking a diuretic?
- A. Tall, spiked T waves
- B. A prolonged QT interval
- C. A widening QRS complex
- D. Presence of a U wave
Correct answer: D
Rationale: The presence of a U wave is often associated with hypokalemia, a possible side effect of diuretic therapy like furosemide. Hypokalemia can lead to U wave formation on an electrocardiogram, making the presence of U waves a concerning finding in clients taking diuretics. Tall, spiked T waves are typically seen in hyperkalemia, not hypokalemia. A prolonged QT interval is more commonly associated with conditions like Long QT syndrome or certain medications, not specifically with diuretics. A widening QRS complex is usually seen in conditions affecting the conduction system of the heart, such as bundle branch blocks, rather than being directly related to diuretic use.
2. The nurse is caring for a client with hypertension who is prescribed enalapril (Vasotec). The nurse should monitor the client for which potential adverse effect?
- A. Hypertension
- B. Hypotension
- C. Tachycardia
- D. Hyperglycemia
Correct answer: B
Rationale: The correct answer is B: Hypotension. Enalapril is an ACE inhibitor that works by dilating blood vessels and reducing blood pressure. Therefore, a potential adverse effect of enalapril is hypotension, not hypertension (choice A), tachycardia (choice C), or hyperglycemia (choice D). Monitoring for hypotension is crucial to prevent complications.
3. When educating a client about the use of risedronate to treat osteoporosis, which instruction should be included?
- A. Drink a full glass of water with each dose.
- B. Take the medication on an empty stomach.
- C. Remain upright for 30 minutes after taking the medication.
- D. Avoid lying down for at least 1 hour after taking the medication.
Correct answer: C
Rationale: The correct instruction for a client taking risedronate to treat osteoporosis is to remain upright for 30 minutes after taking the medication. This is important to prevent esophageal irritation, as risedronate can cause irritation if it remains in contact with the esophagus. By staying upright, the medication is more likely to reach the stomach quickly and reduce the risk of irritation to the esophagus. Choices A, B, and D are incorrect. Drinking a full glass of water is recommended, not milk, to help with swallowing the medication. Risedronate should be taken on an empty stomach, not with meals, to ensure proper absorption. Additionally, avoiding lying down for at least 1 hour after taking the medication helps prevent esophageal irritation.
4. The client is receiving furosemide (Lasix) for heart failure. What potential side effect should the nurse monitor for?
- A. Hypokalemia
- B. Hyperkalemia
- C. Hypernatremia
- D. Hypoglycemia
Correct answer: A
Rationale: The correct answer is A: Hypokalemia. Furosemide, a loop diuretic, causes potassium loss, leading to hypokalemia. Monitoring potassium levels is crucial because hypokalemia can result in cardiac arrhythmias and muscle weakness. Choices B, C, and D are incorrect because furosemide does not typically cause hyperkalemia, hypernatremia, or hypoglycemia.
5. A healthcare provider is assisting in the care of a client who is having central venous pressure (CVP) measurements taken. The healthcare provider should assist by placing the bed in which position for the reading?
- A. Flat
- B. Semi-Fowler's
- C. Trendelenburg
- D. Reverse Trendelenburg
Correct answer: A
Rationale: Central venous pressure (CVP) measurements are most accurate when the client is lying flat, as this allows for a consistent baseline. Placing the bed flat ensures that the hydrostatic pressure within the vena cava is not affected by the client's position, providing a more precise reading. Choice B (Semi-Fowler's) elevates the head of the bed at a 30-45 degree angle, which could affect the accuracy of CVP readings. Choices C (Trendelenburg) and D (Reverse Trendelenburg) involve extreme positions that would not be suitable for obtaining accurate CVP measurements.
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