HESI LPN
Pharmacology HESI Practice
1. A client with angina pectoris has been prescribed nitroglycerin tablets prn for chest pain. Which statement by the client causes the practical nurse (PN) to clarify instructions for this client?
- A. I will take one tablet every 5 minutes, up to three tablets.
- B. I should take one tablet at the onset of angina and stop activity.
- C. I need to replace nitroglycerin tablets every 3 to 6 months to maintain freshness.
- D. I should ensure that I chew the pill completely before swallowing it.
Correct answer: D
Rationale: Nitroglycerin tablets should be taken at the onset of angina, and the client should stop activity and rest. One tablet should be placed under the tongue (sublingually), not chewed or swallowed. One tablet can be taken every 5 minutes, up to three doses. If pain relief not achieved after taking three pills, seek medical attention immediately. Nitroglycerin should be replaced every 3 to 6 months. Nitroglycerin pain relief should occur in 5 minutes and duration should last 30 minutes.
2. Phenazopyridine is commonly prescribed for clients with urinary tract infections (UTI). Which statement by the practical nurse describes the purpose for the administration of phenazopyridine?
- A. To alter the pH level of the urine
- B. To reduce the frequency of bladder spasms
- C. To alleviate the painful symptoms caused by the UTI
- D. To prevent bacterial replication and resistance development
Correct answer: C
Rationale: The correct answer is C. Phenazopyridine, a urinary analgesic, is utilized to alleviate the pain associated with urinary tract infections (UTIs) like burning, pain, urgency, and frequent voiding. The administration of phenazopyridine can cause the urine to turn a bright red-orange color. It is recommended to take this medication with food to reduce gastric irritation. Phenazopyridine should only be used for a maximum of 2 days when taken alongside an antibacterial agent, which is typically prescribed for about 2 weeks to treat the underlying infection.
3. The nurse is caring for a patient with short-term persistent diarrhea. Which class of medication would the nurse anticipate giving?
- A. Lubricants
- B. Probiotics
- C. Adsorbents
- D. Anticholinergics
Correct answer: B
Rationale: Probiotics are the correct choice in this scenario as they help restore normal gut flora, which can be effective in treating diarrhea by promoting a healthy balance of bacteria in the intestines. Lubricants are used to ease bowel movements and are not indicated for treating diarrhea. Adsorbents work by binding to toxins in the gut, which is not the primary mechanism needed for treating diarrhea. Anticholinergics are more commonly used for conditions like overactive bladder and not for short-term persistent diarrhea.
4. 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.
5. 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.
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