ATI LPN
LPN Pharmacology Practice Test
1. A healthcare professional is providing discharge teaching to a client who has a new prescription for enoxaparin. Which of the following instructions should the healthcare professional include?
- A. Administer the injection into the abdomen.
- B. Avoid massaging the injection site after administration.
- C. Expect mild bruising at the injection site.
- D. Avoid alternating injection sites between the arms.
Correct answer: A
Rationale: Administering enoxaparin into the abdomen is recommended to ensure proper absorption and effectiveness. Massaging the injection site after administration should be avoided as it can increase the risk of bleeding or bruising. Mild bruising at the injection site is common with enoxaparin and should be expected. Alternating injection sites, especially between arms, is not suitable for enoxaparin administration. Consistent administration into the abdomen is preferred for consistent absorption of the medication.
2. A client has a new prescription for isoniazid. Which of the following instructions should the nurse include?
- A. Take the medication on an empty stomach.
- B. Avoid drinking alcohol.
- C. Take the medication with an antacid.
- D. Increase your intake of leafy green vegetables.
Correct answer: B
Rationale: The correct answer is to instruct the client to avoid drinking alcohol. Isoniazid can cause liver damage, and alcohol consumption can increase this risk. Therefore, it is crucial to avoid alcohol while taking isoniazid to prevent potential liver complications. Choice A is incorrect because isoniazid is typically taken with food to reduce gastrointestinal upset. Choice C is incorrect because antacids can decrease the absorption of isoniazid. Choice D is incorrect as there is no specific recommendation to increase leafy green vegetable intake when taking isoniazid.
3. 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.
4. A client has a new prescription for levothyroxine. Which of the following instructions should the nurse include?
- A. Take the medication on an empty stomach.
- B. Take the medication with food.
- C. Take the medication at bedtime.
- D. Take the medication with an antacid.
Correct answer: A
Rationale: The correct answer is A: 'Take the medication on an empty stomach.' Levothyroxine should be taken on an empty stomach to ensure optimal absorption. Food, especially high-fiber foods, can interfere with the absorption of levothyroxine. Taking it with an antacid or at bedtime may also affect its absorption. Instructing the client to take the medication on an empty stomach will help maintain consistent blood levels of levothyroxine. Choice B is incorrect as taking levothyroxine with food can reduce its absorption. Choice C is incorrect because taking levothyroxine at bedtime may lead to inconsistent blood levels due to food intake during the day. Choice D is incorrect as antacids can interfere with the absorption of levothyroxine.
5. 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.
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