ATI RN
ATI Pharmacology Test Bank
1. A client has a prescription for Trimethoprim-Sulfamethoxazole. Which of the following instructions should the nurse include?
- A. Take the medication with food.
- B. Increase fluid intake.
- C. Expect reddish-orange urine.
- D. Avoid high-protein foods.
Correct answer: B
Rationale: The correct instruction for a client prescribed Trimethoprim-Sulfamethoxazole is to increase fluid intake. This helps prevent crystalluria and kidney stones, which are potential adverse effects of this medication. Adequate hydration is essential to reduce the risk of these complications.
2. A healthcare professional is preparing to administer heparin 15,000 units subcutaneously every 12 hr. The amount available is heparin injection 20,000 units/mL. How many mL should the healthcare professional administer per dose?
- A. 0.8 mL
- B. 0.75 mL
- C. 0.5 mL
- D. 1 mL
Correct answer: A
Rationale: To calculate the volume to administer, use the formula: (Desired dose / Concentration) = Volume to administer. In this case, (15,000 units / 20,000 units/mL) = 0.75 mL, which is rounded up to 0.8 mL. Therefore, the healthcare professional should administer 0.8 mL per dose of heparin. Choice B (0.75 mL) is incorrect as it is the exact calculated volume but needs to be rounded up. Choices C (0.5 mL) and D (1 mL) are incorrect as they do not reflect the correct calculated volume for the desired dose of heparin.
3. A client in a long-term care facility has Hypothyroidism and a new prescription for Levothyroxine. Which of the following dosage schedules should the nurse expect for this client?
- A. The client will start at a high dose, and the dose will be tapered as needed.
- B. The client will remain on the initial dosage during the course of treatment.
- C. The client's dosage will be adjusted daily based on blood levels.
- D. The client will start on a low dose, which will be gradually increased.
Correct answer: D
Rationale: The nurse should expect that levothyroxine will be started at a low dose and gradually increased over several weeks. This cautious approach is crucial, especially in older adult clients, to prevent toxicity and ensure optimal therapeutic outcomes for managing hypothyroidism. Choice A is incorrect because starting at a high dose and tapering as needed is not the standard approach for levothyroxine. Choice B is incorrect because the initial dosage is typically adjusted to reach the optimal therapeutic dose. Choice C is incorrect as adjusting the dosage daily based on blood levels is not necessary for levothyroxine, as it has a long half-life and requires time to reach a steady state.
4. A client is receiving warfarin therapy. Which of the following findings should the nurse identify as an adverse effect of warfarin?
- A. Nausea
- B. Epistaxis
- C. Diarrhea
- D. Dyspepsia
Correct answer: B
Rationale: Epistaxis, or nosebleeds, can be an indication of excessive anticoagulation while on warfarin therapy. Warfarin is a blood thinner that helps prevent blood clots. Epistaxis can occur as a result of the blood-thinning effects of warfarin, leading to increased bleeding tendencies, including nosebleeds. Nausea, diarrhea, and dyspepsia are not typically associated with warfarin therapy; therefore, they are not the adverse effects the nurse should identify in a client receiving warfarin.
5. A nurse is teaching a client who has a new prescription for Furosemide. Which of the following dietary instructions should the nurse provide?
- A. Increase your intake of potassium-rich foods.
- B. Limit your intake of calcium-rich foods.
- C. Avoid consuming dairy products.
- D. Increase your intake of fiber-rich foods.
Correct answer: A
Rationale: Furosemide, a loop diuretic, can cause potassium loss. Clients should increase their intake of potassium-rich foods to prevent hypokalemia.
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