ATI RN
ATI Pharmacology
1. When providing discharge instructions to a client prescribed 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: St. John's wort should be avoided by clients taking Warfarin as it can reduce the medication's effectiveness by interacting with its metabolism. While garlic and ginseng are also known to interact with Warfarin, the specific supplement the nurse should instruct the client to avoid in this scenario is St. John's wort. Echinacea, although an herbal supplement, is not typically associated with significant interactions with Warfarin and is not the primary concern in this case.
2. A patient is prescribed warfarin therapy for an artificial heart valve. Which of the following laboratory values should the nurse monitor for a therapeutic effect of warfarin?
- A. Hemoglobin
- B. Prothrombin time (PT)
- C. Bleeding time
- D. Activated partial thromboplastin time (aPTT)
Correct answer: B
Rationale: The correct answer is to monitor Prothrombin time (PT) when a patient is on warfarin therapy. Warfarin affects blood clotting, and PT is used to assess the therapeutic effect of this medication. Hemoglobin (Choice A) is not directly affected by warfarin therapy and does not reflect its therapeutic effect. Bleeding time (Choice C) measures the time it takes for bleeding to stop after a standardized cut and is not specific to warfarin therapy. Activated partial thromboplastin time (aPTT) (Choice D) is more commonly used to monitor heparin therapy, not warfarin.
3. A healthcare provider is caring for a client who is prescribed Furosemide. Which of the following laboratory values should the healthcare provider monitor?
- A. Serum potassium
- B. Serum calcium
- C. Serum sodium
- D. Serum magnesium
Correct answer: A
Rationale: Furosemide is a loop diuretic that can cause hypokalemia (low potassium levels) due to increased potassium excretion in the urine. Monitoring serum potassium levels is crucial to prevent complications such as cardiac arrhythmias. Therefore, the healthcare provider should closely monitor the client's serum potassium levels when they are prescribed Furosemide. While monitoring other electrolytes like sodium and magnesium may also be important in certain situations, the priority for a client prescribed Furosemide is to monitor serum potassium levels due to the risk of hypokalemia.
4. A client is prescribed Diltiazem. Which of the following findings should the nurse monitor?
- A. Tachycardia
- B. Bradycardia
- C. Hypertension
- D. Hyperkalemia
Correct answer: B
Rationale: Diltiazem is a calcium channel blocker that can lead to bradycardia as an adverse effect due to its negative chronotropic and dromotropic effects on the heart. The nurse should monitor the client's heart rate regularly to detect any signs of bradycardia and take appropriate actions if necessary. Tachycardia (Choice A) is not an expected finding with Diltiazem use. Hypertension (Choice C) is actually a condition that Diltiazem is used to treat. Hyperkalemia (Choice D) is not a common adverse effect of Diltiazem.
5. A client has 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, not potassium. Therefore, the client needs to be cautious with foods high in vitamin K, such as green leafy vegetables, rather than foods high in potassium. Choices A, B, and D are correct statements regarding Warfarin therapy and do not indicate a need for further teaching.
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