ATI RN
ATI Pharmacology Proctored Exam 2024
1. A client with a new prescription for Verapamil to control hypertension is being taught by a healthcare professional. Which of the following client statements indicates an understanding of the teaching?
- A. I should avoid drinking grapefruit juice.
- B. I can expect my heart rate to increase while taking this medication.
- C. This medication will cause my urine to turn orange.
- D. I will stop taking this medication if I experience headaches.
Correct answer: A
Rationale: The correct answer is A. Grapefruit juice can increase blood levels of verapamil, leading to increased effects and potentially serious side effects such as hypotension or bradycardia. It is crucial for the client to avoid grapefruit juice while taking Verapamil to prevent these adverse reactions. Choice B is incorrect because verapamil is a calcium channel blocker that typically lowers heart rate. Choice C is incorrect as verapamil does not cause urine discoloration. Choice D is incorrect because stopping medication abruptly without consulting a healthcare provider can be dangerous.
2. A client receiving chemotherapy with Methotrexate asks why Leucovorin is being given. Which of the following responses should the nurse use?
- A. Leucovorin reduces the risk of a transfusion reaction from Methotrexate.
- B. Leucovorin increases platelet production and prevents bleeding.
- C. Leucovorin potentiates the cytotoxic effects of Methotrexate.
- D. Leucovorin protects healthy cells from Methotrexate's toxic effects.
Correct answer: D
Rationale: Leucovorin, a folic acid derivative and an antagonist to Methotrexate, is given within 12 hours of high doses of Methotrexate to protect healthy cells from the toxic effects of Methotrexate. It helps to reduce the bone marrow suppression and gastrointestinal side effects caused by Methotrexate, supporting the client's overall well-being during chemotherapy treatment. Choices A, B, and C are incorrect because Leucovorin does not reduce the risk of a transfusion reaction from Methotrexate, increase platelet production, prevent bleeding, or potentiate the cytotoxic effects of Methotrexate. Instead, Leucovorin works by rescuing healthy cells from the toxic effects of Methotrexate.
3. A client has a new prescription for Clonidine. Which of the following instructions should the nurse include?
- A. Expect to feel drowsy.
- B. Increase your intake of high-potassium foods.
- C. Take the medication with grapefruit juice.
- D. Avoid foods high in fat.
Correct answer: A
Rationale: The correct answer is to expect to feel drowsy. Clonidine is known to cause drowsiness, especially at the beginning of treatment. It is important for clients to be cautious with activities that require alertness until they understand how the medication affects them. Choice B is incorrect as there is no specific need to increase high-potassium foods with Clonidine. Choice C is incorrect as grapefruit juice can interact with many medications but is not a typical instruction for Clonidine. Choice D is incorrect as there is no specific indication to avoid foods high in fat with Clonidine.
4. What is the antidote for copper toxicity?
- A. Glucagon
- B. Aminocaproic acid
- C. Atropine
- D. Penicillamine
Correct answer: D
Rationale: Penicillamine is the specific chelating agent used for copper toxicity. It forms stable complexes with copper, which are then excreted in the urine. Glucagon is used for treating hypoglycemia, aminocaproic acid is used to treat bleeding disorders, and atropine is used as an antidote for certain types of poisoning, such as organophosphate toxicity.
5. A client has a new prescription for Maraviroc to treat HIV infection. The healthcare provider should monitor the client for which of the following adverse reactions?
- A. Liver failure
- B. Kidney failure
- C. Pancreatitis
- D. Severe allergic reactions
Correct answer: D
Rationale: The correct answer is D: Severe allergic reactions. Maraviroc, used to treat HIV infection, can lead to severe allergic reactions, including hepatotoxicity. While liver failure is a potential adverse effect, it is often preceded by hepatotoxicity manifestations like jaundice or right upper quadrant pain. Kidney failure and pancreatitis are not typically associated with Maraviroc use. Therefore, monitoring for signs of severe allergic reactions and hepatotoxicity is crucial for early detection and intervention.
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