HESI LPN
Pharmacology HESI 2023
1. A client is prescribed phenytoin for the management of seizures. What instruction should the practical nurse provide to the client regarding this medication?
- A. Take the medication at the same time every day.
- B. Discontinue the medication if a rash develops.
- C. Avoid consuming dairy products.
- D. Monitor blood pressure regularly.
Correct answer: A
Rationale: The correct instruction the practical nurse should provide to the client regarding phenytoin is to take the medication at the same time every day. This consistency helps maintain a steady level of the medication in the bloodstream, which is crucial for effectively managing seizures. It is important for clients to adhere to their prescribed dosing schedule to optimize the therapeutic benefits of phenytoin. Choices B, C, and D are incorrect because discontinuing the medication without healthcare provider guidance can be dangerous, there is no specific interaction between phenytoin and dairy products, and monitoring blood pressure is not a primary concern with phenytoin therapy for seizures.
2. A client with multiple sclerosis starts a new prescription, baclofen, to control muscle spasticity. Three days later, the client calls the clinic nurse and reports feeling fatigued and dizzy. Which instruction should the nurse provide?
- A. Avoid hazardous activities until symptoms subside
- B. Contact the healthcare provider immediately
- C. Continue taking the medication every day
- D. Stop taking the medication until the unpleasant side effects wear off
Correct answer: A
Rationale: The correct instruction for the nurse to provide is to advise the client to avoid hazardous activities until the symptoms of fatigue and dizziness subside. These side effects can impair the client's ability to engage in activities that require alertness and coordination, posing a risk for accidents. Contacting the healthcare provider immediately may not be necessary unless the symptoms worsen or persist. Continuing to take the medication every day without addressing the side effects can lead to further complications. Stopping the medication abruptly without healthcare provider guidance can also be risky and may not be necessary if the symptoms improve with time.
3. A client admitted with shortness of breath and palpitations currently takes an antiarrhythmic medication, dronedarone. Which action should the nurse take to prevent arrhythmias?
- A. Measure orthostatic blood pressure
- B. Obtain a 12-lead ECG reading daily
- C. Assess the client's apical pulse daily
- D. Provide continuous ECG monitoring
Correct answer: D
Rationale: The correct action to prevent arrhythmias in a client taking an antiarrhythmic medication like dronedarone is to provide continuous ECG monitoring. This is essential because antiarrhythmic drugs can sometimes cause pro-arrhythmic effects, which may lead to dangerous heart rhythm disturbances. Continuous ECG monitoring allows for real-time detection of any abnormal rhythms, enabling prompt intervention. Measuring orthostatic blood pressure, obtaining a 12-lead ECG reading daily, and assessing the client's apical pulse daily are important assessments in general patient care but may not specifically prevent arrhythmias in this scenario.
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 diabetes mellitus type 2 is prescribed canagliflozin. The nurse should include which instruction in the client's teaching plan?
- A. Report any signs of urinary tract infection.
- B. Take this medication with meals.
- C. Avoid alcohol while taking this medication.
- D. Avoid taking this medication with grapefruit juice.
Correct answer: A
Rationale: The correct instruction to include in the client's teaching plan is to report any signs of urinary tract infection. Canagliflozin, a medication used in diabetes mellitus type 2, can increase the risk of urinary tract infections. Instructing the client to report any signs of infection is crucial for early intervention and management. Choices B, C, and D are incorrect because there is no specific requirement to take canagliflozin with meals, avoid alcohol, or restrict grapefruit juice consumption while on this medication.
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