ATI RN
ATI Proctored Pharmacology Test
1. A client has a new prescription for a combination of oral NRTIs (abacavir, lamivudine, and zidovudine) for the treatment of HIV. Which of the following statements should the nurse include in teaching the client?
- A. These medications work by blocking HIV entry into cells.
- B. These medications work by weakening the cell wall of the HIV virus.
- C. These medications work by inhibiting enzymes to prevent HIV replication.
- D. These medications work by preventing protein synthesis within the HIV cell.
Correct answer: C
Rationale: The NRTI antiretroviral medications this client is prescribed work by inhibiting the enzyme reverse transcriptase, thus preventing HIV replication. By inhibiting this crucial enzyme, the drug interferes with the virus's ability to replicate and spread in the body. Choice A is incorrect because NRTIs do not block HIV entry into cells. Choice B is incorrect as NRTIs do not weaken the cell wall of the virus. Choice D is incorrect as NRTIs do not prevent protein synthesis within the HIV cell.
2. When administering IV Amphotericin B to a client with a systemic fungal infection, the nurse should monitor the client for which of the following adverse effects of this medication?
- A. Hypoglycemia
- B. Constipation
- C. Fever
- D. Hyperkalemia
Correct answer: C
Rationale: The correct answer is fever. Amphotericin B is known to cause adverse effects such as fever, chills, and nausea during infusion. Monitoring for fever is essential as it can indicate an adverse reaction. To manage these effects, pretreatment with diphenhydramine and acetaminophen can be administered.
3. An older adult client has a new prescription for Digoxin and takes multiple other medications. The nurse should recognize that concurrent use of which of the following medications places the client at risk for Digoxin toxicity?
- A. Phenytoin
- B. Verapamil
- C. Warfarin
- D. Aluminum hydroxide
Correct answer: B
Rationale: Verapamil, a calcium-channel blocker, can increase digoxin levels, leading to toxicity. When given together, the digoxin dosage may need adjustment, and the nurse should closely monitor the client's digoxin levels to prevent toxicity symptoms such as nausea, vomiting, visual disturbances, and arrhythmias. The other choices, Phenytoin, Warfarin, and Aluminum hydroxide, do not significantly interact with Digoxin to cause toxicity. Phenytoin may reduce Digoxin levels, while Warfarin and Aluminum hydroxide have minimal interactions with Digoxin.
4. A client has a new prescription for Sucralfate to treat a duodenal ulcer. Which of the following instructions should be included?
- A. Take the medication with meals.
- B. Swallow the tablet whole.
- C. Take the medication 1 hour before meals.
- D. Chew the tablet before swallowing.
Correct answer: C
Rationale: The correct instruction for taking Sucralfate is to take it 1 hour before meals. This timing allows the medication to coat the stomach lining, providing a protective barrier against stomach acid, which aids in healing the duodenal ulcer. Option A is incorrect as it contradicts the correct timing for taking Sucralfate. Option B is not necessary as it does not pertain to how the medication should be taken in relation to meals. Option D is incorrect as chewing the tablet before swallowing is not the correct administration method for Sucralfate.
5. A healthcare provider is reviewing the health history of a client who is starting therapy with tamoxifen. The healthcare provider should recognize that tamoxifen is contraindicated in which of the following clients?
- A. A client with a history of deep-vein thrombosis
- B. A client with a history of migraine headaches
- C. A client with a history of hypertension
- D. A client with a history of anemia
Correct answer: A
Rationale: Tamoxifen is contraindicated in clients with a history of thromboembolic events, such as deep-vein thrombosis, due to the increased risk of blood clots forming and leading to serious complications like pulmonary embolism. Clients with a history of deep-vein thrombosis are at a higher risk of recurrent thromboembolic events when taking tamoxifen, making it unsafe for such individuals. Choices B, C, and D are not contraindications for tamoxifen therapy, as migraine headaches, hypertension, and anemia do not directly interact with tamoxifen's mechanism of action or pose significant risks when used together.
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