Nursing Elites

1. A client prescribed Warfarin is receiving discharge instructions from a nurse. Which of the following dietary instructions should the nurse include?

• A. Increase your intake of leafy green vegetables.
• B. Avoid foods high in vitamin K.
• C. Increase your intake of dairy products.
• D. Avoid foods high in iron.

Correct answer: B

Rationale: The correct answer is B: 'Avoid foods high in vitamin K.' Vitamin K can interfere with the effectiveness of Warfarin, an anticoagulant medication. Foods high in vitamin K, such as leafy green vegetables, can reduce the medication's anticoagulant effect. Therefore, clients taking Warfarin should be advised to avoid or consume a consistent amount of foods high in vitamin K to maintain the medication's effectiveness. Choices A, C, and D are incorrect because increasing leafy green vegetables, dairy products, or avoiding foods high in iron are not directly related to the interaction with Warfarin.

2. 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.

3. While teaching a client with a new prescription for Warfarin, which of the following statements by the client indicates a need for further teaching?

• A. I will avoid eating large amounts of green leafy vegetables.
• B. I will take my medication at the same time every day.
• C. I will increase my intake of foods high in potassium.
• D. I will report any signs of bleeding to my provider.

Correct answer: C

Rationale: The correct answer is C because Warfarin interacts with vitamin K, found in green leafy vegetables, not potassium. The client should avoid consuming large amounts of foods high in vitamin K to maintain the effectiveness of Warfarin therapy. Increasing potassium intake is not a concern related to Warfarin therapy, so this statement indicates a need for further teaching. Choices A, B, and D are all correct statements indicating good understanding of Warfarin therapy. Avoiding large amounts of green leafy vegetables helps prevent fluctuations in vitamin K levels, taking medication consistently maintains therapeutic levels, and reporting any signs of bleeding is essential for monitoring and managing potential side effects of Warfarin.

4. A client has a new prescription for Warfarin. Which of the following herbal supplements should the client be instructed to avoid?

• A. St. John's wort
• B. Echinacea
• C. Garlic
• D. Ginseng

Correct answer: A

Rationale: St. John's wort should be avoided by clients taking Warfarin as it can reduce the medication's effectiveness by affecting its metabolism. Echinacea, garlic, and ginseng are also known to interact with Warfarin, either by increasing the risk of bleeding or altering its anticoagulant effects. However, St. John's wort is particularly significant due to its potent enzyme-inducing properties that can lead to subtherapeutic levels of Warfarin, potentially increasing the risk of blood clots.

5. Which of the following conditions is not treated with Lansoprazole?

• A. Zollinger-Ellison syndrome
• B. Gastritis
• C. Hypertension
• D. Reflux

Correct answer: C

Rationale: Lansoprazole is a proton pump inhibitor used to treat conditions related to excessive stomach acid production, such as Zollinger-Ellison syndrome, gastritis, and reflux. However, it is not indicated for the treatment of hypertension, which is managed using antihypertensive medications. Therefore, the correct answer is C: Hypertension.

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