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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?
- 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.
2. 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.
3. A home health care nurse observes that a client with Parkinson's syndrome is experiencing increased tremors and difficulty in movement. What should the nurse do in response to this finding?
- A. Report the observed finding to the healthcare provider right away
- B. Arrange a medical evaluation so the medication dose can be adjusted
- C. Schedule a return home visit in 2 weeks to monitor
- D. Explain that this is an expected progression of Parkinson's
Correct answer: B
Rationale: In a client with Parkinson's syndrome experiencing increased tremors and movement difficulty, arranging a medical evaluation is crucial to adjust the medication dose. This proactive approach helps in managing the symptoms effectively. Reporting the finding to the healthcare provider may delay necessary adjustments in treatment. Scheduling a return home visit in 2 weeks may not address the immediate need for medication adjustment. Explaining that the progression is expected without taking action does not address the client's worsening symptoms.
4. A client who is in the rehabilitation facility with newly diagnosed Parkinson's disease (PD) has levodopa-carbidopa prescribed. During the care planning session for this client, the nurse discusses which aspects with the other members of the health care team? (Select all that apply.)
- A. Ask the dietician to avoid increasing the amounts of foods high in Vitamin B6.
- B. Lessening of tremors
- C. Remind others on the team that this medication will not relieve all symptoms of PD.
- D. Ask the evening shift nurses to give the last dose earlier in the day if the client has insomnia.
Correct answer: D
Rationale: Levodopa-carbidopa is a medication commonly used in the treatment of Parkinson's disease (PD). It can cause side effects such as hypotension with sudden position changes. To assist the client in managing this side effect, the physical therapy assistant can help avoid sudden position changes. Additionally, if insomnia occurs, adjusting the timing of the last dose earlier in the day can be beneficial. It is important to note that drowsiness can also be a side effect of the medication and should be reported to the nurse. Foods high in Vitamin B6 can interfere with the absorption of levodopa-carbidopa; hence, it is advisable to avoid increasing the consumption of such foods. Lastly, it is crucial to remind the team that while this medication helps alleviate symptoms like tremors, it may not relieve all symptoms of PD comprehensively.
5. The nurse is studying antacids that contain magnesium and calcium for the pharmacology exam. The student nurse remembers that these antacids should be used with caution in patients with which condition?
- A. Hypertension
- B. Renal failure
- C. Heart failure
- D. Peptic ulcer disease
Correct answer: B
Rationale: Magnesium and calcium can accumulate in patients with renal failure, leading to toxicity.
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