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. A client has metoprolol prescribed. The nurse should reinforce instructions that this medication has which potential adverse effect?
- A. Anxiety
- B. Tachycardia
- C. Sexual dysfunction
- D. Acute renal failure
Correct answer: C
Rationale: The correct answer is C: Sexual dysfunction. Metoprolol, a beta-blocker, can cause sexual dysfunction as an adverse effect. It is important for the nurse to educate the client about this potential side effect. Choice A is incorrect because metoprolol can cause depression, not anxiety. Choice B is incorrect as tachycardia is not an adverse effect of metoprolol; instead, it can lead to bradycardia. Choice D is incorrect because acute renal failure is not typically associated with the use of beta-blockers.
3. A client with a diagnosis of schizophrenia is prescribed ziprasidone. The nurse should monitor the client for which potential side effect?
- A. QT prolongation
- B. Weight gain
- C. Dry mouth
- D. Increased appetite
Correct answer: A
Rationale: The correct answer is A: QT prolongation. Ziprasidone is known to cause QT prolongation, which can potentially lead to serious cardiac issues. Monitoring the client's ECG is crucial to detect any changes and prevent adverse effects related to QT interval prolongation. Choices B, C, and D are incorrect because weight gain, dry mouth, and increased appetite are not commonly associated with ziprasidone. While weight gain can be a side effect of some antipsychotic medications, it is not a prominent side effect of ziprasidone. Dry mouth and increased appetite are also not typically linked to ziprasidone use.
4. A client has been diagnosed with open-angle glaucoma. The healthcare provider prescribes pilocarpine 1% eye drops. The nurse explains that which action of this drug makes it a useful treatment for the client's condition?
- A. The ciliary muscle contracts, increasing the outflow of aqueous humor in the eye.
- B. Ciliary muscles are paralyzed to decrease accommodation.
- C. Bilateral mydriasis with cycloplegia is accomplished.
- D. The production of aqueous humor in the eyes is decreased.
Correct answer: A
Rationale: Pilocarpine, a cholinergic agent, stimulates the ciliary muscle to contract, which opens the trabecular meshwork and facilitates the outflow of aqueous humor, reducing intraocular pressure. This mechanism helps in managing open-angle glaucoma by improving drainage and lowering pressure within the eye. Choice A is correct because the contraction of the ciliary muscle increases the outflow of aqueous humor, aiding in the treatment of open-angle glaucoma. Choices B, C, and D are incorrect because they do not describe the mechanism of action of pilocarpine in treating glaucoma.
5. A client with amyotrophic lateral sclerosis (ALS) has been taking riluzole for two weeks. The nurse notes that the client remains weak with observable muscle atrophy. What action should the nurse take?
- A. Explain that the medication may take time to show improvement in symptoms
- B. Withhold the medication and notify the healthcare provider
- C. Advise the client to undergo liver function tests
- D. Document the assessment findings in the electronic health record
Correct answer: D
Rationale: In this scenario, the nurse's priority is to document the assessment findings in the electronic health record. This action is crucial for maintaining an accurate record of the client's health status and can provide valuable information for the healthcare team. While it is important to monitor the client's response to riluzole, explaining that the medication may take time to show improvement (Choice A) would be more appropriate if the client was expecting immediate results. Withholding the medication and notifying the healthcare provider (Choice B) should not be the initial action without further assessment or guidance. Advising the client to undergo liver function tests (Choice C) is not directly related to the current situation of weakness and muscle atrophy.
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