ATI RN
ATI Pharmacology Test Bank
1. A client has a prescription for Trimethoprim-Sulfamethoxazole. Which of the following instructions should the nurse include?
- A. Take the medication with food.
- B. Increase fluid intake.
- C. Expect reddish-orange urine.
- D. Avoid high-protein foods.
Correct answer: B
Rationale: The correct instruction for a client prescribed Trimethoprim-Sulfamethoxazole is to increase fluid intake. This helps prevent crystalluria and kidney stones, which are potential adverse effects of this medication. Adequate hydration is essential to reduce the risk of these complications.
2. When educating a client who has a prescription for Levothyroxine, which instruction should the nurse include?
- A. Take this medication on an empty stomach.
- B. Take this medication with food.
- C. Take this medication at bedtime.
- D. Take this medication with antacids.
Correct answer: A
Rationale: The correct instruction for taking Levothyroxine is on an empty stomach. This helps to enhance the absorption and effectiveness of the medication. Consuming it with food or antacids can impede its absorption, leading to decreased efficacy.
3. What does it mean when a medication has a half-life?
- A. It only lasts for 30 minutes after the medication is given
- B. How long it takes for half of the dose to be eliminated from the bloodstream
- C. It is the peak of how effective the medicine is
- D. Drug is greatly reduced before it reaches the systemic circulation
Correct answer: B
Rationale: When a medication has a half-life, it refers to the time it takes for half of the dose to be eliminated from the bloodstream. This parameter is crucial in understanding the duration of action and dosing intervals for medications in clinical practice. Choice A is incorrect as the half-life is not about how long the medication lasts but about elimination from the body. Choice C is incorrect because the half-life is not about the peak effectiveness of the medicine. Choice D is incorrect as it does not accurately define the concept of half-life.
4. 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.
5. A client has a new prescription for Clopidogrel. Which of the following instructions should the nurse include?
- A. Avoid taking aspirin while on this medication.
- B. Take this medication with food.
- C. Avoid eating foods high in potassium.
- D. Take this medication at bedtime.
Correct answer: A
Rationale: The correct answer is to instruct the client to avoid taking aspirin while on Clopidogrel. Clopidogrel is an antiplatelet medication that can increase the risk of bleeding. Aspirin and other NSAIDs can further potentiate this risk, so they should be avoided while taking Clopidogrel to reduce the chance of bleeding complications. Choices B, C, and D are incorrect. There is no specific instruction to take Clopidogrel with food or at bedtime. Avoiding foods high in potassium is not directly related to Clopidogrel use.
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