ATI LPN
LPN Pharmacology Practice Test
1. A client has a new prescription for alendronate. Which of the following instructions should be included in the teaching?
- A. Take the medication with a full glass of water.
- B. Lie down for 30 minutes after taking the medication.
- C. Take the medication at bedtime.
- D. Avoid dairy products while taking the medication.
Correct answer: A
Rationale: The correct instruction for taking alendronate is to take it with a full glass of water to prevent esophageal irritation. This helps ensure proper absorption and reduces the risk of irritation to the esophagus. Choice B is incorrect because patients should remain upright for at least 30 minutes after taking alendronate to prevent esophageal irritation. Choice C is incorrect as alendronate should be taken in the morning on an empty stomach. Choice D is also incorrect as there is no specific requirement to avoid dairy products while taking alendronate.
2. The client with a history of coronary artery disease (CAD) is scheduled for a stress test. What instruction should the nurse provide to the client before the test?
- A. Continue taking your usual dose of beta-blockers
- B. Refrain from eating or drinking anything for 4 hours before the test
- C. Wear loose, comfortable clothing and walking shoes
- D. Avoid any physical activity for 24 hours before the test
Correct answer: C
Rationale: Before a stress test, the nurse should instruct the client to wear loose, comfortable clothing and walking shoes. This is essential as the stress test involves physical exercise, and the client should be ready for the activity involved. Continuing beta-blockers should be based on healthcare provider's instructions; adjustments may be needed. Fasting before the test is usually not necessary. Avoiding physical activity for 24 hours before the test is not recommended as it may affect the accuracy of the test results by not providing a true reflection of the client's exercise capacity.
3. The LPN/LVN is assisting in caring for a client in the telemetry unit who is receiving an intravenous infusion of 1000 mL of 5% dextrose with 40 mEq of potassium chloride. Which occurrence observed on the cardiac monitor indicates the presence of hyperkalemia?
- A. Tall, peaked T waves
- B. ST segment depressions
- C. Shortened P-R intervals
- D. Shortening of the QRS complex
Correct answer: A
Rationale: In hyperkalemia, tall, peaked T waves are a distinct ECG finding. These T waves can be seen as a result of increased serum potassium levels, affecting the repolarization phase of the cardiac action potential. It is crucial for healthcare providers to recognize this ECG change promptly as hyperkalemia can lead to serious cardiac arrhythmias and complications. ST segment depressions, shortened P-R intervals, and shortening of the QRS complex are not typically associated with hyperkalemia. ST segment depressions are more indicative of myocardial ischemia or infarction. Shortened P-R intervals may be seen in conditions like Wolff-Parkinson-White syndrome. Shortening of the QRS complex is associated with conditions affecting the conduction system of the heart, such as bundle branch blocks.
4. A client with a diagnosis of angina pectoris is prescribed nitroglycerin tablets. How should the nurse instruct the client to take the medication?
- A. Swallow the tablet whole with water
- B. Place the tablet under the tongue and let it dissolve
- C. Chew the tablet and then swallow
- D. Place the tablet between the cheek and gum
Correct answer: B
Rationale: Nitroglycerin is most effective when administered sublingually (under the tongue) as it is rapidly absorbed into the bloodstream. Placing the tablet under the tongue allows for quick absorption and faster relief of angina symptoms. Chewing the tablet, swallowing it, or placing it between the cheek and gum would not provide the same rapid onset of action needed during an angina episode. Therefore, the correct instruction for the client is to place the nitroglycerin tablet under the tongue and let it dissolve for optimal effectiveness.
5. A client has a new prescription for clozapine. Which of the following instructions should the nurse include?
- A. You should have your white blood cell count checked regularly.
- B. You should take this medication on an empty stomach.
- C. You should avoid eating foods high in tyramine.
- D. You should avoid taking this medication with milk.
Correct answer: A
Rationale: The correct answer is A: 'You should have your white blood cell count checked regularly.' Clozapine can lead to agranulocytosis, a serious condition characterized by a low white blood cell count. Regular monitoring of the white blood cell count is crucial to detect this adverse effect early and prevent serious complications. Choices B, C, and D are incorrect because taking clozapine on an empty stomach, avoiding foods high in tyramine, or avoiding taking the medication with milk are not specific instructions related to the potential adverse effect of agranulocytosis associated with clozapine.
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