ATI RN
ATI Proctored Pharmacology Test
1. Phenytoin is an antiarrhythmic and anticonvulsant that has an unlabeled use for:
- A. Headaches
- B. Cold remedy
- C. Neuropathic pain
- D. Antianxiety
Correct answer: C
Rationale: Phenytoin, an antiarrhythmic and anticonvulsant medication, is also used off-label for treating neuropathic pain. While its primary indications are for managing heart rhythm disorders and seizures, it has shown efficacy in managing neuropathic pain, expanding its clinical utility. Choices A, B, and D are incorrect as phenytoin is not commonly used for headaches, cold remedies, or antianxiety purposes.
2. When starting a new prescription for prednisone, which instruction should the nurse include for the client?
- A. Increase your intake of potassium-rich foods.
- B. Do not stop taking this medication abruptly.
- C. Avoid grapefruit juice while taking this medication.
- D. Take the medication at bedtime to prevent drowsiness.
Correct answer: B
Rationale: The correct instruction for a client starting a new prescription for prednisone is not to stop taking the medication abruptly. Abrupt discontinuation of prednisone can lead to adrenal insufficiency, emphasizing the importance of gradual tapering under healthcare provider guidance. Increasing potassium-rich foods may be necessary based on individual needs, but it is not the priority instruction in this context. Grapefruit juice interaction is more commonly associated with certain medications but not specifically with prednisone. Taking prednisone at bedtime to prevent drowsiness is not a key instruction related to its administration.
3. A client in a long-term care facility has Hypothyroidism and a new prescription for Levothyroxine. Which of the following dosage schedules should the nurse expect for this client?
- A. The client will start at a high dose, and the dose will be tapered as needed.
- B. The client will remain on the initial dosage during the course of treatment.
- C. The client's dosage will be adjusted daily based on blood levels.
- D. The client will start on a low dose, which will be gradually increased.
Correct answer: D
Rationale: Levothyroxine should be initiated at a low dose and titrated gradually over several weeks to achieve therapeutic levels. This approach helps to minimize the risk of adverse effects, particularly in older adult clients who may be more sensitive to medication changes. Starting at a low dose allows for close monitoring of the client's response and adjustment of the dosage as needed to optimize treatment outcomes. Choice A is incorrect because starting at a high dose can increase the risk of adverse effects and is not the recommended approach. Choice B is incorrect because maintaining the initial dosage throughout the treatment may not achieve optimal therapeutic levels. Choice C is incorrect because adjusting the dosage daily based on blood levels is not the standard practice for initiating Levothyroxine treatment.
4. What is the action of Metformin?
- A. Decreasing intestinal glucose absorption
- B. Increasing sensitivity to insulin
- C. Decreasing hepatic glucose production
- D. All of the above
Correct answer: D
Rationale: Metformin exerts its effects by decreasing hepatic glucose production, increasing sensitivity to insulin, and decreasing intestinal glucose absorption. These actions help in lowering blood glucose levels and improving insulin sensitivity in individuals with diabetes.
5. A healthcare provider is caring for four clients who have Peptic Ulcer Disease. The healthcare provider should recognize Misoprostol is contraindicated for which of the following clients?
- A. A client who is pregnant
- B. A client who has osteoarthritis
- C. A client who has a kidney stone
- D. A client who has a urinary tract infection
Correct answer: A
Rationale: Misoprostol is contraindicated in pregnancy due to its potential to induce labor. It is used to prevent ulcers in patients taking nonsteroidal anti-inflammatory drugs and is not indicated for osteoarthritis, kidney stones, or urinary tract infections. Therefore, the correct answer is A. Misoprostol should not be used in pregnant individuals as it can cause uterine contractions and potentially harm the fetus. Choices B, C, and D are incorrect as Misoprostol is not contraindicated for clients with osteoarthritis, kidney stones, or urinary tract infections.
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