HESI LPN
Pharmacology HESI 2023
1. A client with gastroesophageal reflux disease (GERD) is prescribed omeprazole. The nurse should reinforce which instruction?
- A. Take this medication in the morning before breakfast.
- B. Take this medication with meals.
- C. Avoid taking this medication with antacids.
- D. Take this medication at bedtime.
Correct answer: A
Rationale: The correct instruction for a client with GERD prescribed omeprazole is to take the medication in the morning before breakfast. Omeprazole works best when taken on an empty stomach, approximately 30 minutes before the first meal of the day. This timing maximizes its effectiveness in reducing stomach acid production and helps manage symptoms of GERD more efficiently. Choice B is incorrect because taking omeprazole with meals may reduce its efficacy as it needs an empty stomach for optimal absorption. Choice C is incorrect because omeprazole can be taken with or without food, but it should not be taken with antacids as they can affect its absorption. Choice D is incorrect because taking omeprazole at bedtime is less effective compared to taking it before breakfast due to the circadian rhythm of gastric acid secretion.
2. A client is prescribed phenobarbital 100 mg daily for the treatment of seizures. Which statement made by the client indicates an accurate understanding of the medication phenobarbital?
- A. I will take my medicine at 10 PM before retiring to bed.
- B. The medication will turn the color of my urine to a pink color.
- C. I should not eat or drink anything for at least 2 hours before taking my medicine.
- D. In the event a seizure occurs in the middle of the day, I need to take an extra dose of my medicine.
Correct answer: A
Rationale: The correct answer is A. Phenobarbital should be taken at the same time every day to maintain blood levels and enhance compliance. Common side effects of phenobarbital include drowsiness, lethargy, dizziness, and nausea; therefore, it is best to take it before bedtime to minimize these effects and improve sleep quality. Choice B is incorrect because phenobarbital does not affect the color of urine. Choice C is incorrect because there is no need to fast before taking phenobarbital. Choice D is incorrect because taking extra doses without healthcare provider guidance can lead to overdose and adverse effects.
3. What is the primary nursing intervention that the practical nurse should perform before administering ampicillin to a client diagnosed with a urinary tract infection?
- A. Obtain a clean-catch urine specimen.
- B. Assess the urine pH for acidity.
- C. Insert an indwelling catheter.
- D. Assess for complaints of dysuria.
Correct answer: A
Rationale: The correct answer is to obtain a clean-catch urine specimen. Before administering ampicillin to a client with a urinary tract infection, it is crucial to collect a urine specimen to determine the causative organism and evaluate the effectiveness of pharmacological therapy. Assessing the urine pH for acidity (choice B) is not the primary intervention needed before administering ampicillin. Inserting an indwelling catheter (choice C) is invasive and not necessary unless indicated for specific reasons. Assessing for complaints of dysuria (choice D) is important but does not take precedence over obtaining a urine specimen for proper diagnosis and treatment.
4. A client with hypertension is prescribed clonidine. The nurse should monitor for which potential side effect?
- A. Bradycardia
- B. Tachycardia
- C. Dizziness
- D. Hyperglycemia
Correct answer: A
Rationale: When a client is prescribed clonidine, the nurse should monitor for bradycardia as a potential side effect. Clonidine can lead to a decrease in heart rate, thus causing bradycardia. Monitoring the client's heart rate is crucial to detect and manage this adverse effect.
5. A client has sublingual nitroglycerine tablets prescribed to treat angina. The nurse realizes the client requires further education if the client makes which statements? (Select one that doesn't apply.)
- A. I will need to replace the nitroglycerine tablets every 3 to 5 months, not in a year.
- B. I should continue taking nitroglycerine tablets if I develop a headache.
- C. I understand nitroglycerine tablets do not cause addiction.
- D. If I feel dizzy when I take these, I should sit down or lie down until I feel better.
Correct answer: D
Rationale: The correct answer is D. Nitroglycerine sublingual tablets need to be replaced every 3 to 5 months, not every year, making statement A incorrect. While nitroglycerine can cause a headache, it is important to continue taking the prescribed nitroglycerine if the client has angina, making statement B accurate. Nitroglycerine tablets do not cause addiction, so statement C is correct. Dizziness and weakness are associated with the hypotensive effect of nitroglycerine; therefore, if the client feels dizzy when taking them, they should sit down or lie down until they feel better. Taking nitroglycerine tablets before an activity known to cause angina can help prevent angina attacks.
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