ATI RN
ATI Pharmacology Quizlet
1. A healthcare provider is administering a Dopamine infusion at a low dose to a client who has severe heart failure. Which of the following findings is an expected effect of this medication?
- A. Lowered heart rate
- B. Increased myocardial contractility
- C. Decreased conduction through the AV node
- D. Vasoconstriction of renal blood vessels
Correct answer: B
Rationale: Dopamine, when administered at a low dose, acts on beta1 receptors in the heart, leading to increased myocardial contractility. This positive inotropic effect results in improved cardiac output, which is beneficial for a client with severe heart failure. Dopamine does not typically cause lowered heart rate, decreased conduction through the AV node, or vasoconstriction of renal blood vessels at low doses.
2. A client has a new prescription for Nevirapine, an NNRTI. Which of the following statements should the nurse include in discharge teaching?
- A. Take this medication with food to increase absorption.
- B. Avoid alcohol while taking this medication.
- C. Take this medication at the same time every day.
- D. Take this medication on an empty stomach.
Correct answer: B
Rationale: The correct statement to include in discharge teaching about Nevirapine, an NNRTI, is to advise the client to avoid alcohol while taking this medication. Alcohol can interact with Nevirapine and lead to potential adverse effects or decreased effectiveness. Choice A is incorrect because Nevirapine should be taken without food or on an empty stomach for optimal absorption. Choice C is a general recommendation for most medications but not specifically for Nevirapine. Choice D is incorrect as Nevirapine should not be taken on an empty stomach.
3. A client has a new prescription for Labetalol. Which of the following instructions should the nurse include?
- A. Take this medication at bedtime.
- B. Avoid sudden discontinuation of the medication.
- C. Increase your intake of sodium-rich foods.
- D. Avoid drinking grapefruit juice.
Correct answer: B
Rationale: The correct instruction for a client on Labetalol is to avoid sudden discontinuation of the medication. Labetalol is a beta-blocker that, if abruptly stopped, can lead to rebound hypertension and other cardiac issues. It is essential for patients to taper off this medication under medical supervision to prevent adverse effects.
4. A client has a new prescription for Iron supplements. Which of the following instructions should be included in the teaching?
- A. Take the medication with a glass of orange juice.
- B. Avoid taking the medication with milk.
- C. Increase fiber intake to prevent constipation.
- D. Expect stools to be dark.
Correct answer: C
Rationale: The correct answer is to increase fiber intake to prevent constipation when taking iron supplements. Iron supplements can lead to constipation as a common side effect. Increasing fiber intake helps promote healthy bowel movements and counteracts the constipating effects of iron. Choice A is incorrect because iron absorption is hindered by calcium found in milk. Choice B is incorrect as orange juice enhances iron absorption due to its vitamin C content. Choice D is incorrect as iron supplements can cause stools to appear dark, not bright red.
5. When teaching a client with a new prescription for Warfarin, which herbal supplement should the nurse instruct the client to avoid?
- A. St. John's wort
- B. Echinacea
- C. Garlic
- D. Ginseng
Correct answer: A
Rationale: The correct answer is St. John's wort. St. John's wort can reduce the effectiveness of Warfarin by interacting with its metabolism, potentially leading to decreased anticoagulant effects. Therefore, the nurse should instruct the client to avoid using St. John's wort while taking Warfarin to prevent adverse drug interactions. Echinacea, garlic, and ginseng are not the correct answers in this case. While these herbal supplements may also interact with Warfarin and affect its efficacy, St. John's wort has a well-known interaction with Warfarin that can significantly impact its anticoagulant effects. Educating the client about the specific interaction between St. John's wort and Warfarin is crucial to ensure patient safety and the medication's therapeutic benefit.
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