a client is prescribed phenobarbital 100 mg daily for the treatment of seizures which statement made by the client indicates an accurate understanding
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Pharmacology HESI 55 Questions 2023

1. 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?

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.

2. A client diagnosed with a herniated disc is prescribed hydrocodone/acetaminophen 10 mg/300 mg prn every 4 to 6 hours. As the practical nurse (PN) enters the client's room to administer the requested medication, the client is seen talking and laughing with visiting family. What action should the PN take?

Correct answer: C

Rationale: The correct action for the PN in this situation is to administer the analgesia as requested by the client. Pain management is based on the client's self-report of pain, which is the most reliable indicator of pain intensity. Analgesics should be given promptly when pain occurs and before it worsens. Following the administration of medication, the PN should discuss the situation with the charge nurse for further guidance or assessment.

3. A practical nurse (PN) is reviewing teaching with the client and/or significant others about the concurrent use of benztropine and olanzapine to manage psychotic behavior. What information should the PN reinforce?

Correct answer: C

Rationale: The correct answer is C because benztropine, an anticholinergic drug, is used to control extrapyramidal symptoms associated with olanzapine use. Choice A is incorrect because benztropine does not directly reduce olanzapine's side effect of urinary retention. Choice B is incorrect as benztropine does not potentiate the effect of olanzapine; its main role is to counteract extrapyramidal symptoms. Choice D is incorrect because the primary purpose of using benztropine alongside olanzapine is to manage side effects, not specifically to modify psychotic behavior.

4. The healthcare provider is assessing the effectiveness of the drug amiodarone. Which client statement best indicates that the drug has been effective?

Correct answer: D

Rationale: The correct answer is option D. The effectiveness of amiodarone is best assessed by a reduction in irregular heartbeats since it is primarily used to treat ventricular dysrhythmias. This drug's main purpose is to control irregular heart rhythms, so a decrease in irregular heartbeats indicates its effectiveness. Options A, B, and C are incorrect because amiodarone is not primarily used to address angina, ankle swelling, or cholesterol levels, so improvements in these areas do not directly reflect the drug's effectiveness.

5. 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?

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.

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