ATI RN
ATI Pharmacology Test Bank
1. A client with Hodgkin's disease is receiving Cyclophosphamide IV. Which medication should be administered concurrently to prevent an adverse effect of Cyclophosphamide?
- A. Uroprotectant agent, such as mesna
- B. Opioid, such as morphine
- C. Loop diuretic, such as furosemide
- D. H1 receptor antagonist, such as diphenhydramine
Correct answer: A
Rationale: Mesna, an uroprotectant agent, is administered with nitrogen mustard chemotherapy drugs like Cyclophosphamide to prevent hemorrhagic cystitis, a common adverse effect. Mesna works by binding to and inactivating the toxic metabolites of Cyclophosphamide in the bladder, thereby reducing the risk of bladder toxicity.
2. A client prescribed Warfarin is receiving discharge instructions from a nurse. Which of the following herbal supplements should the nurse instruct the client to avoid?
- A. St. John's wort
- B. Echinacea
- C. Garlic
- D. Ginseng
Correct answer: A
Rationale: St. John's wort can reduce the effectiveness of Warfarin by interacting with its metabolism pathways, potentially leading to decreased anticoagulant effects. Therefore, clients on Warfarin therapy should avoid St. John's wort. While echinacea, garlic, and ginseng are also herbal supplements that can interact with Warfarin, St. John's wort is particularly known for its significant impact on Warfarin metabolism. Echinacea may increase the risk of bleeding when taken with Warfarin, garlic may potentiate the anticoagulant effects of Warfarin, and ginseng may also increase the risk of bleeding. However, St. John's wort is the most crucial to avoid due to its significant impact on Warfarin metabolism.
3. What is the pharmacological action of metformin?
- A. Blocks stimulation of beta1 and beta2.
- B. Blocks vasoconstriction and aldosterone.
- C. Acts at many levels in the CNS to produce an anxiolytic effect.
- D. Decreases hepatic glucose production.
Correct answer: D
Rationale: The correct answer is D: Decreases hepatic glucose production. Metformin's primary pharmacological action is to decrease hepatic glucose production, leading to lower blood sugar levels and improved insulin sensitivity in the liver. Choices A, B, and C are incorrect because metformin does not block stimulation of beta1 and beta2 receptors, vasoconstriction, aldosterone, or act in the CNS to produce an anxiolytic effect. Therefore, these options are not reflective of metformin's mechanism of action.
4. A client has a new prescription for Clonidine to assist with maintenance of abstinence from opioids. The nurse should instruct the client to monitor for which of the following adverse effects?
- A. Diarrhea
- B. Dry mouth
- C. Insomnia
- D. Hypertension
Correct answer: B
Rationale: Dry mouth is a common adverse effect associated with Clonidine use. Clonidine is known to cause a reduction in saliva production, leading to dry mouth. Monitoring for this adverse effect is essential to ensure client comfort and compliance with the medication. Diarrhea is not a common adverse effect of Clonidine. Insomnia is more commonly associated with opioid withdrawal rather than Clonidine use. While Clonidine is used to treat hypertension, it is not typically an adverse effect of the medication.
5. A client has a new prescription for Levofloxacin. Which of the following instructions should be included in the discharge instructions?
- A. Take this medication with food.
- B. Avoid taking this medication with dairy products.
- C. Take this medication at bedtime.
- D. Increase your intake of potassium-rich foods.
Correct answer: B
Rationale: The correct answer is B: 'Avoid taking this medication with dairy products.' Levofloxacin should not be taken with dairy products because calcium can interfere with the absorption of the medication. It is recommended to take Levofloxacin 1 hour before or 2 hours after consuming dairy products to ensure optimal absorption and effectiveness of the medication. Choices A, C, and D are incorrect. Choice A is not recommended as Levofloxacin is usually taken on an empty stomach. Choice C is not necessary information for taking Levofloxacin. Choice D is unrelated to the administration of Levofloxacin.
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