ATI RN
ATI Pharmacology
1. A healthcare provider is educating a client who has a new prescription for Simvastatin. Which of the following instructions should the healthcare provider include?
- A. Take this medication with food.
- B. Avoid drinking grapefruit juice.
- C. Take this medication in the morning.
- D. Increase your intake of potassium-rich foods.
Correct answer: B
Rationale: The correct instruction that the healthcare provider should include is to 'Avoid drinking grapefruit juice.' Grapefruit juice can increase the blood levels of Simvastatin, leading to potential side effects like muscle pain and liver damage. Instructing the client to avoid grapefruit juice helps prevent these adverse effects and ensures the medication's efficacy. Choices A, C, and D are incorrect because taking Simvastatin with food, at a specific time, or increasing potassium-rich foods intake are not essential instructions for this medication.
2. A client has a new prescription for Verapamil. Which of the following instructions should the nurse include?
- A. Take this medication at bedtime.
- B. Monitor for signs of hyperglycemia.
- C. Avoid drinking grapefruit juice.
- D. Increase your intake of potassium-rich foods.
Correct answer: C
Rationale: The correct answer is to instruct the client to avoid drinking grapefruit juice. Grapefruit juice can inhibit the metabolism of Verapamil, leading to increased blood levels of the medication, which can potentiate its effects, potentially causing adverse reactions like hypotension and bradycardia. Choices A, B, and D are incorrect. Taking Verapamil at bedtime is not a specific instruction related to its metabolism or side effects. Monitoring for signs of hyperglycemia is not directly related to Verapamil use. Increasing potassium-rich foods intake is not necessary with Verapamil and could potentially lead to hyperkalemia in some cases.
3. A client has a new prescription for hydrochlorothiazide to treat hypertension. Which of the following instructions should be included?
- A. Take the medication in the morning.
- B. Increase intake of potassium-rich foods.
- C. Avoid sun exposure while taking this medication.
- D. Limit fluid intake to 1 liter per day.
Correct answer: B
Rationale: The correct instruction that should be included for a client prescribed hydrochlorothiazide is to increase the intake of potassium-rich foods. Hydrochlorothiazide, being a diuretic, can lead to hypokalemia by enhancing potassium excretion. Increasing consumption of potassium-rich foods like bananas or oranges can help prevent hypokalemia and maintain electrolyte balance. Choices A, C, and D are incorrect. Taking the medication in the morning is not a specific instruction related to hydrochlorothiazide. Avoiding sun exposure is more relevant for photosensitive medications, not hydrochlorothiazide. Limiting fluid intake to 1 liter per day is not necessary unless specifically advised by a healthcare provider.
4. A client with breast cancer is receiving cyclophosphamide. What finding should the nurse monitor for?
- A. Hypertension
- B. Hyperglycemia
- C. Ototoxicity
- D. Hemorrhagic cystitis
Correct answer: D
Rationale: When a client is receiving cyclophosphamide, the nurse should monitor for hemorrhagic cystitis, a severe adverse effect caused by bladder irritation. It is essential to watch for signs such as hematuria, dysuria, and urinary frequency, and promptly intervene to prevent further complications. Hypertension (Choice A) is not typically associated with cyclophosphamide use. Hyperglycemia (Choice B) is not a common side effect of cyclophosphamide. Ototoxicity (Choice C) is more commonly associated with medications like aminoglycoside antibiotics or high-dose aspirin.
5. While providing an Angiotensin-converting enzyme (ACE) inhibitor, the patient asks what the action of the drug is. As a healthcare provider, you explain that the action of an ACE inhibitor is:
- A. To lower blood pressure by blocking the conversion of angiotensin I to vasoconstrictor angiotensin II
- B. To inhibit reabsorption of sodium back into the body, ultimately increasing urine output and lowering blood pressure
- C. To decrease heart rate and blood pressure by competing with Beta1 and Beta2 receptors in the heart and lungs
- D. To lower blood glucose by stimulating the release of insulin
Correct answer: A
Rationale: ACE inhibitors lower blood pressure by blocking the conversion of angiotensin I to vasoconstrictor angiotensin II. Angiotensin II is a potent vasoconstrictor, and by inhibiting its formation, ACE inhibitors help dilate blood vessels, reduce blood pressure, and decrease the workload on the heart. Choice B is incorrect as it describes the mechanism of action of diuretics, not ACE inhibitors. Choice C is incorrect as it refers to the action of beta-blockers, not ACE inhibitors. Choice D is incorrect as it describes the mechanism of action of antidiabetic medications, not ACE inhibitors.
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